Addition of Active-Standby Feature
Patch 1: Adds the active-standby feature to drools-pdp.
This feature provides the state control of the
drools-pdp nodes controlling failover with a site
and across sites. Patch 2: Resolve merge conflict in
packages/install/pom.xml and pom.xml. Patch 3: Resolved
comments from Pamela Dragosh and Jorge Hernandez.
Issue-ID: POLICY-156
Change-Id: I922b3d5d8a464006e9675924bcbc7409d68c08d5
Signed-off-by: Kevin McKiou <km097d@att.com>
diff --git a/api-active-standby-management/pom.xml b/api-active-standby-management/pom.xml
new file mode 100644
index 0000000..581acae
--- /dev/null
+++ b/api-active-standby-management/pom.xml
@@ -0,0 +1,49 @@
+<!--
+ ============LICENSE_START=======================================================
+ ECOMP Policy Engine - Drools PDP
+ ================================================================================
+ Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ============LICENSE_END=========================================================
+ -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+
+ <parent>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>drools-pdp</artifactId>
+ <version>1.1.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>api-active-standby-management</artifactId>
+
+ <name>api-active-standby-management</name>
+ <description>API for Active Standby Management feature</description>
+
+ <properties>
+ <maven.compiler.source>1.8</maven.compiler.source>
+ <maven.compiler.target>1.8</maven.compiler.target>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>policy-management</artifactId>
+ <version>${project.version}</version>
+ <scope>provided</scope>
+ </dependency>
+ </dependencies>
+</project>
diff --git a/api-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeatureAPI.java b/api-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeatureAPI.java
new file mode 100644
index 0000000..ef02c61
--- /dev/null
+++ b/api-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeatureAPI.java
@@ -0,0 +1,63 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * api-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import org.onap.policy.drools.utils.OrderedService;
+import org.onap.policy.drools.utils.OrderedServiceImpl;
+
+/**
+ * This interface provides a way to invoke optional features at various
+ * points in the code. At appropriate points in the
+ * application, the code iterates through this list, invoking these optional
+ * methods.
+ */
+public interface ActiveStandbyFeatureAPI extends OrderedService
+{
+ /**
+ * 'FeatureAPI.impl.getList()' returns an ordered list of objects
+ * implementing the 'FeatureAPI' interface.
+ */
+ public static OrderedServiceImpl<ActiveStandbyFeatureAPI> impl =
+ new OrderedServiceImpl<>(ActiveStandbyFeatureAPI.class);
+
+ /**
+ * This method returns the resourceName (PDP ID) for the Drools-PDP that is
+ * currently designated as active.
+ *
+ * @return String (resourceName)
+ */
+ public String getPdpdNowActive();
+
+ /**
+ * This method returns the resourceName (PDP ID) for the Drools-PDP that was
+ * previously designated as active.
+ *
+ * @return String (resourceName)
+ */
+ public String getPdpdLastActive();
+
+ /**
+ * This method returns the resourceName associated with this instance of the feature
+ * @return String (resourceName)
+ */
+ public String getResourceName();
+
+}
diff --git a/feature-active-standby-management/pom.xml b/feature-active-standby-management/pom.xml
new file mode 100644
index 0000000..824b38e
--- /dev/null
+++ b/feature-active-standby-management/pom.xml
@@ -0,0 +1,136 @@
+<!--
+ ============LICENSE_START=======================================================
+ feature-active-standby-management
+ ================================================================================
+ Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ============LICENSE_END=========================================================
+ -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+
+ <parent>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>drools-pdp</artifactId>
+ <version>1.1.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>feature-active-standby-management</artifactId>
+
+ <name>feature-active-standby-management</name>
+ <description>Separately loadable module for managing active-standby behavior</description>
+
+ <build>
+ <plugins>
+ <plugin>
+ <artifactId>maven-assembly-plugin</artifactId>
+ <version>2.6</version>
+ <executions>
+ <execution>
+ <id>zipfile</id>
+ <goals>
+ <goal>single</goal>
+ </goals>
+ <phase>package</phase>
+ <configuration>
+ <attach>true</attach>
+ <finalName>${project.artifactId}-${project.version}</finalName>
+ <descriptors>
+ <descriptor>src/assembly/assemble_zip.xml</descriptor>
+ </descriptors>
+ <appendAssemblyId>false</appendAssemblyId>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-dependency-plugin</artifactId>
+ <version>2.8</version>
+ <executions>
+ <execution>
+ <id>copy-dependencies</id>
+ <goals>
+ <goal>copy-dependencies</goal>
+ </goals>
+ <phase>prepare-package</phase>
+ <configuration>
+ <transitive>false</transitive>
+ <outputDirectory>${project.build.directory}/assembly/lib</outputDirectory>
+ <overWriteReleases>false</overWriteReleases>
+ <overWriteSnapshots>true</overWriteSnapshots>
+ <overWriteIfNewer>true</overWriteIfNewer>
+ <useRepositoryLayout>false</useRepositoryLayout>
+ <addParentPoms>false</addParentPoms>
+ <copyPom>false</copyPom>
+ <includeScope>runtime</includeScope>
+ <excludeTransitive>true</excludeTransitive>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </build>
+
+ <dependencies>
+ <dependency>
+ <groupId>io.swagger</groupId>
+ <artifactId>swagger-jersey2-jaxrs</artifactId>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>policy-core</artifactId>
+ <version>${project.version}</version>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>policy-management</artifactId>
+ <version>${project.version}</version>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.eclipse.persistence</groupId>
+ <artifactId>eclipselink</artifactId>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>api-active-standby-management</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>api-state-management</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>feature-state-management</artifactId>
+ <version>${project.version}</version>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>com.h2database</groupId>
+ <artifactId>h2</artifactId>
+ <version>[1.4.186,)</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+
+</project>
diff --git a/feature-active-standby-management/src/assembly/assemble_zip.xml b/feature-active-standby-management/src/assembly/assemble_zip.xml
new file mode 100644
index 0000000..97b82ac
--- /dev/null
+++ b/feature-active-standby-management/src/assembly/assemble_zip.xml
@@ -0,0 +1,76 @@
+<!--
+ ============LICENSE_START=======================================================
+ feature-active-standby- management
+ ================================================================================
+ Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ============LICENSE_END=========================================================
+ -->
+
+<!-- Defines how we build the .zip file which is our distribution. -->
+
+<assembly
+ xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+ <id>feature-active-standby-management</id>
+ <formats>
+ <format>zip</format>
+ </formats>
+
+ <!-- we want "system" and related files right at the root level as this
+ file is suppose to be unzip on top of a karaf distro. -->
+ <includeBaseDirectory>false</includeBaseDirectory>
+
+ <fileSets>
+ <fileSet>
+ <directory>target</directory>
+ <outputDirectory>lib/feature</outputDirectory>
+ <includes>
+ <include>feature-active-standby-management-${project.version}.jar</include>
+ </includes>
+ </fileSet>
+ <fileSet>
+ <directory>target/assembly/lib</directory>
+ <outputDirectory>lib/dependencies</outputDirectory>
+ <includes>
+ <include>*.jar</include>
+ </includes>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/config</directory>
+ <outputDirectory>config</outputDirectory>
+ <fileMode>0644</fileMode>
+ <excludes/>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/bin</directory>
+ <outputDirectory>bin</outputDirectory>
+ <fileMode>0744</fileMode>
+ <excludes/>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/db</directory>
+ <outputDirectory>db</outputDirectory>
+ <fileMode>0744</fileMode>
+ <excludes/>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/install</directory>
+ <outputDirectory>install</outputDirectory>
+ <fileMode>0744</fileMode>
+ <excludes/>
+ </fileSet>
+ </fileSets>
+</assembly>
diff --git a/feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties b/feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties
new file mode 100644
index 0000000..d9fd6ca
--- /dev/null
+++ b/feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties
@@ -0,0 +1,39 @@
+###
+# ============LICENSE_START=======================================================
+# feature-active-standby-management
+# ================================================================================
+# Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END=========================================================
+###
+
+# DB properties
+javax.persistence.jdbc.driver=org.mariadb.jdbc.Driver
+javax.persistence.jdbc.url=jdbc:mariadb://${{SQL_HOST}}:3306/activestandbymanagement
+javax.persistence.jdbc.user=${{SQL_USER}}
+javax.persistence.jdbc.password=${{SQL_PASSWORD}}
+
+# Must be unique across the system
+resource.name=pdp1
+# Name of the site in which this node is hosted
+site_name=site1
+
+# Needed by DroolsPdpsElectionHandler
+pdp.checkInterval=1500
+pdp.updateInterval=1000
+#pdp.timeout=3000
+# Need long timeout, because testTransaction is only run every 10 seconds.
+pdp.timeout=15000
+#how long do we wait for the pdp table to populate on initial startup
+pdp.initialWait=20000
\ No newline at end of file
diff --git a/feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql b/feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql
new file mode 100644
index 0000000..4b3375a
--- /dev/null
+++ b/feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql
@@ -0,0 +1,34 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+set foreign_key_checks=0;
+
+CREATE TABLE if not exists activestandbymanagement.DROOLSPDPENTITY
+(
+pdpId VARCHAR(255) NOT NULL,
+designated TINYINT(1) default 0 NOT NULL,
+priority INTEGER NOT NULL,
+site VARCHAR(50),
+updatedDate TIMESTAMP NOT NULL,
+designatedDate TIMESTAMP NOT NULL,
+PRIMARY KEY (pdpId)
+);
+
+set foreign_key_checks=1;
\ No newline at end of file
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java
new file mode 100644
index 0000000..d40a9e0
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java
@@ -0,0 +1,240 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.io.IOException;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.onap.policy.drools.core.PolicySessionFeatureAPI;
+import org.onap.policy.drools.features.PolicyEngineFeatureAPI;
+import org.onap.policy.drools.statemanagement.StateManagementFeatureAPI;
+import org.onap.policy.drools.system.PolicyEngine;
+import org.onap.policy.drools.utils.PropertyUtil;
+
+/**
+ * If this feature is supported, there is a single instance of it.
+ * It adds persistence to Drools sessions, but it is also intertwined with
+ * active/standby state management and IntegrityMonitor. For now, they are
+ * all treated as a single feature, but it would be nice to separate them.
+ *
+ * The bulk of the code here was once in other classes, such as
+ * 'PolicyContainer' and 'Main'. It was moved here as part of making this
+ * a separate optional feature.
+ */
+public class ActiveStandbyFeature implements ActiveStandbyFeatureAPI,
+ PolicySessionFeatureAPI, PolicyEngineFeatureAPI
+{
+ // get an instance of logger
+ private static final Logger logger =
+ LoggerFactory.getLogger(ActiveStandbyFeature.class);
+
+ private static DroolsPdp myPdp;
+ private static Object myPdpSync = new Object();
+ private static DroolsPdpsElectionHandler electionHandler;
+
+ private StateManagementFeatureAPI stateManagementFeature;
+
+ public static final int SEQ_NUM = 1;
+
+
+ /**************************/
+ /* 'FeatureAPI' interface */
+ /**************************/
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int getSequenceNumber()
+ {
+ return(SEQ_NUM);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void globalInit(String args[], String configDir)
+ {
+ // This must come first since it initializes myPdp
+ initializePersistence(configDir);
+
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ if (feature.getResourceName().equals(myPdp.getPdpId()))
+ {
+ if(logger.isDebugEnabled()){
+ logger.debug("ActiveStandbyFeature.globalInit: Found StateManagementFeature"
+ + " with resourceName: {}", myPdp.getPdpId());
+ }
+ stateManagementFeature = feature;
+ break;
+ }
+ }
+ if(stateManagementFeature == null){
+ if(logger.isDebugEnabled()){
+ logger.debug("ActiveStandbyFeature failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", myPdp.getPdpId());
+ }
+ logger.error("ActiveStandbyFeature failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", myPdp.getPdpId());
+ }
+
+
+
+ //Create an instance of the Observer
+ PMStandbyStateChangeNotifier pmNotifier = new PMStandbyStateChangeNotifier();
+
+ //Register the PMStandbyStateChangeNotifier Observer
+ stateManagementFeature.addObserver(pmNotifier);
+ if(logger.isDebugEnabled()){
+ logger.debug("ActiveStandbyFeature.globalInit() exit");
+ }
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean afterStart(PolicyEngine engine)
+ {
+ // ASSERTION: engine == PolicyEngine.manager
+ PolicyEngine.manager.lock();
+ return false;
+ }
+
+ /**
+ * Read in the persistence properties, determine whether persistence is
+ * enabled or disabled, and initialize persistence if enabled.
+ */
+ private static void initializePersistence(String configDir)
+ {
+ //Get the Active Standby properties
+ try {
+ Properties activeStandbyProperties =
+ PropertyUtil.getProperties(configDir + "/feature-active-standby-management.properties");
+ ActiveStandbyProperties.initProperties(activeStandbyProperties);
+ logger.info("initializePersistence: ActiveStandbyProperties success");
+ } catch (IOException e) {
+ logger.error("ActiveStandbyFeature: initializePersistence ActiveStandbyProperties", e);
+ }
+
+ DroolsPdpsConnector conn = getDroolsPdpsConnector("activeStandbyPU");
+ String resourceName = ActiveStandbyProperties.getProperty(ActiveStandbyProperties.NODE_NAME);
+ if(resourceName == null){
+ throw new NullPointerException();
+ }
+
+ /*
+ * In a JUnit test environment, one or more PDPs may already have been
+ * inserted in the DB, so we need to check for this.
+ */
+ DroolsPdp existingPdp = conn.getPdp(resourceName);
+ if (existingPdp != null) {
+ System.out.println("Found existing PDP record, pdpId="
+ + existingPdp.getPdpId() + ", isDesignated="
+ + existingPdp.isDesignated() + ", updatedDate="
+ + existingPdp.getUpdatedDate());
+ myPdp = existingPdp;
+ }
+
+ synchronized(myPdpSync){
+ if(myPdp == null){
+
+ myPdp = new DroolsPdpImpl(resourceName,false,4,new Date());
+ }
+ if(myPdp != null){
+ String site_name = ActiveStandbyProperties.getProperty(ActiveStandbyProperties.SITE_NAME);
+ if (site_name == null) {
+ site_name = "";
+ }else{
+ site_name = site_name.trim();
+ }
+ myPdp.setSiteName(site_name);
+ }
+ if(electionHandler == null){
+ electionHandler = new DroolsPdpsElectionHandler(conn,myPdp);
+ }
+ }
+ System.out.println("\n\nThis controller is a standby, waiting to be chosen as primary...\n\n");
+ logger.info("\n\nThis controller is a standby, waiting to be chosen as primary...\n\n");
+ }
+
+
+ /*
+ * Moved code to instantiate a JpaDroolsPdpsConnector object from main() to
+ * this method, so it can also be accessed from StandbyStateChangeNotifier
+ * class.
+ */
+ public static DroolsPdpsConnector getDroolsPdpsConnector(String pu) {
+
+ Map<String, Object> propMap = new HashMap<String, Object>();
+ propMap.put("javax.persistence.jdbc.driver", ActiveStandbyProperties
+ .getProperty(ActiveStandbyProperties.DB_DRIVER));
+ propMap.put("javax.persistence.jdbc.url",
+ ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_URL));
+ propMap.put("javax.persistence.jdbc.user", ActiveStandbyProperties
+ .getProperty(ActiveStandbyProperties.DB_USER));
+ propMap.put("javax.persistence.jdbc.password",
+ ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_PWD));
+
+ EntityManagerFactory emf = Persistence.createEntityManagerFactory(
+ pu, propMap);
+ DroolsPdpsConnector conn = new JpaDroolsPdpsConnector(emf);
+
+ return conn;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String getPdpdNowActive(){
+ return electionHandler.getPdpdNowActive();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String getPdpdLastActive(){
+ return electionHandler.getPdpdLastActive();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String getResourceName() {
+ return myPdp.getPdpId();
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java
new file mode 100644
index 0000000..6e26334
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.util.Properties;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ActiveStandbyProperties {
+ // get an instance of logger
+ private static final Logger logger = LoggerFactory.getLogger(ActiveStandbyProperties.class);
+
+ public static final String PDP_CHECK_INVERVAL = "pdp.checkInterval";
+ public static final String PDP_UPDATE_INTERVAL = "pdp.updateInterval";
+ public static final String PDP_TIMEOUT = "pdp.timeout";
+ public static final String PDP_INITIAL_WAIT_PERIOD = "pdp.initialWait";
+
+ public static final String NODE_NAME = "resource.name";
+ public static final String SITE_NAME = "site_name";
+
+ /*
+ * feature-active-standby-management.properties parameter key values
+ */
+ public static final String DB_DRIVER = "javax.persistence.jdbc.driver";
+ public static final String DB_URL = "javax.persistence.jdbc.url";
+ public static final String DB_USER = "javax.persistence.jdbc.user";
+ public static final String DB_PWD = "javax.persistence.jdbc.password";
+
+ private static Properties properties = null;
+ /*
+ * Initialize the parameter values from the droolsPersitence.properties file values
+ *
+ * This is designed so that the Properties object is obtained from properties
+ * file and then is passed to this method to initialize the value of the parameters.
+ * This allows the flexibility of JUnit tests using getProperties(filename) to get the
+ * properties while runtime methods can use getPropertiesFromClassPath(filename).
+ *
+ */
+ public static void initProperties (Properties prop){
+ logger.info("ActiveStandbyProperties.initProperties(Properties): entry");
+ logger.info("\n\nActiveStandbyProperties.initProperties: Properties = \n{}\n\n", prop);
+
+ properties = prop;
+ }
+
+ public static String getProperty(String key){
+ return properties.getProperty(key);
+ }
+
+ public static Properties getProperties() {
+ return properties;
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java
new file mode 100644
index 0000000..a440a7e
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java
@@ -0,0 +1,39 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.util.Date;
+
+public interface DroolsPdp {
+
+ public String getPdpId();
+ public boolean isDesignated();
+ public int getPriority();
+ public Date getUpdatedDate();
+ public void setDesignated(boolean isDesignated);
+ public void setUpdatedDate(Date updatedDate);
+ public int comparePriority(DroolsPdp other);
+ public int comparePriority(DroolsPdp other,String previousSite);
+ public String getSiteName();
+ public void setSiteName(String siteName);
+ public Date getDesignatedDate();
+ public void setDesignatedDate(Date designatedDate);
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java
new file mode 100644
index 0000000..ec1ce57
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java
@@ -0,0 +1,137 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.io.Serializable;
+import java.util.Date;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.NamedQueries;
+import javax.persistence.NamedQuery;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
+
+import org.onap.policy.drools.activestandby.DroolsPdpObject;
+
+@Entity
+//@Table(name="DroolsPdpEntity")
+
+@NamedQueries({
+ @NamedQuery(name="DroolsPdpEntity.findAll", query="SELECT e FROM DroolsPdpEntity e "),
+ @NamedQuery(name="DroolsPdpEntity.deleteAll", query="DELETE FROM DroolsPdpEntity WHERE 1=1")
+})
+public class DroolsPdpEntity extends DroolsPdpObject implements Serializable{
+
+ private static final long serialVersionUID = 1L;
+
+ @Id
+ @Column(name="pdpId", nullable=false)
+ private String pdpId="-1";
+
+ @Column(name="designated", nullable=false)
+ private boolean designated=false;
+
+ @Column(name="priority", nullable=false)
+ private int priority=0;
+
+ @Temporal(TemporalType.TIMESTAMP)
+ @Column(name="updatedDate", nullable=false)
+ private Date updatedDate;
+
+ @Temporal(TemporalType.TIMESTAMP)
+ @Column(name="designatedDate",nullable=false)
+ private Date designatedDate;
+
+ @Column(name="site", nullable=true, length = 50)
+ private String site;
+
+
+ public DroolsPdpEntity(){
+ updatedDate = new Date();
+ //When this is translated to a TimeStamp in MySQL, it assumes the date is relative
+ //to the local timezone. So, a value of Date(0) is actually Dec 31 18:00:00 CST 1969
+ //which is an invalid value for the MySql TimeStamp
+ designatedDate = new Date(864000000);
+ }
+
+ @Override
+ public String getPdpId() {
+ return this.pdpId;
+ }
+
+ public void setPdpId(String pdpId) {
+ this.pdpId = pdpId;
+ }
+
+ @Override
+ public boolean isDesignated() {
+ return this.designated;
+ }
+
+ @Override
+ public int getPriority() {
+ return this.priority;
+ }
+
+ public void setPriority(int priority) {
+ this.priority = priority;
+ }
+
+ @Override
+ public Date getUpdatedDate() {
+ return this.updatedDate;
+ }
+
+ @Override
+ public void setDesignated(boolean isDesignated) {
+ this.designated=isDesignated;
+ }
+
+ @Override
+ public void setUpdatedDate(Date updatedDate) {
+ this.updatedDate=updatedDate;
+ }
+
+
+ @Override
+ public String getSiteName() {
+ return site;
+ }
+
+ @Override
+ public void setSiteName(String siteName) {
+ site = siteName;
+
+ }
+
+ @Override
+ public Date getDesignatedDate() {
+ return designatedDate;
+ }
+
+ @Override
+ public void setDesignatedDate(Date designatedDate) {
+ this.designatedDate = designatedDate;
+ }
+
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java
new file mode 100644
index 0000000..141d585
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java
@@ -0,0 +1,92 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.util.Date;
+
+public class DroolsPdpImpl extends DroolsPdpObject {
+
+ private boolean designated;
+ private int priority;
+ private Date updatedDate;
+ private Date designatedDate;
+ private String pdpId;
+ private String site;
+
+ public DroolsPdpImpl(String pdpId, boolean designated, int priority, Date updatedDate){
+ this.pdpId = pdpId;
+ this.designated = designated;
+ this.priority = priority;
+ this.updatedDate = updatedDate;
+ //When this is translated to a TimeStamp in MySQL, it assumes the date is relative
+ //to the local timezone. So, a value of Date(0) is actually Dec 31 18:00:00 CST 1969
+ //which is an invalid value for the MySql TimeStamp
+ this.designatedDate = new Date(864000000);
+
+ }
+ @Override
+ public boolean isDesignated() {
+
+ return designated;
+ }
+
+ @Override
+ public int getPriority() {
+ return priority;
+ }
+ @Override
+ public void setUpdatedDate(Date date){
+ this.updatedDate = date;
+ }
+ @Override
+ public Date getUpdatedDate() {
+ return updatedDate;
+ }
+
+ @Override
+ public String getPdpId() {
+ return pdpId;
+ }
+ @Override
+ public void setDesignated(boolean isDesignated) {
+ this.designated = isDesignated;
+
+ }
+
+ @Override
+ public String getSiteName() {
+ return site;
+ }
+ @Override
+ public void setSiteName(String siteName) {
+ this.site = siteName;
+
+ }
+ @Override
+ public Date getDesignatedDate() {
+ return designatedDate;
+ }
+ @Override
+ public void setDesignatedDate(Date designatedDate) {
+ this.designatedDate = designatedDate;
+
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java
new file mode 100644
index 0000000..e434c83
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+
+public abstract class DroolsPdpObject implements DroolsPdp{
+
+ @Override
+ public boolean equals(Object other){
+ if(other instanceof DroolsPdp){
+ return this.getPdpId().equals(((DroolsPdp)other).getPdpId());
+ }else{
+ return false;
+ }
+ }
+ private int nullSafeCompare(String one, String two){
+ if(one != null && two != null){
+ return one.compareTo(two);
+ }
+ if(one == null && two != null){
+ return -1;
+ }
+ if(one != null && two == null){
+ return 1;
+ }
+ return 0;
+ }
+ @Override
+ public int comparePriority(DroolsPdp other){
+ if(nullSafeCompare(this.getSiteName(),other.getSiteName()) == 0){
+ if(this.getPriority() != other.getPriority()){
+ return this.getPriority() - other.getPriority();
+ }
+ return this.getPdpId().compareTo(other.getPdpId());
+ } else {
+ return nullSafeCompare(this.getSiteName(),other.getSiteName());
+ }
+ }
+ @Override
+ public int comparePriority(DroolsPdp other, String previousSite){
+ if(previousSite == null || previousSite.equals("")){
+ return comparePriority(other);
+ }
+ if(nullSafeCompare(this.getSiteName(),other.getSiteName()) == 0){
+ if(this.getPriority() != other.getPriority()){
+ return this.getPriority() - other.getPriority();
+ }
+ return this.getPdpId().compareTo(other.getPdpId());
+ } else {
+ return nullSafeCompare(this.getSiteName(),other.getSiteName());
+ }
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java
new file mode 100644
index 0000000..d0d33f0
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java
@@ -0,0 +1,63 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.util.Collection;
+
+public interface DroolsPdpsConnector {
+
+
+ //return a list of PDPs, NOT including this PDP
+ public Collection<DroolsPdp> getDroolsPdps();
+
+ public void update(DroolsPdp pdp);
+
+ //determines if the DroolsPdp parameter is considered "current" or expired (has it been too long since the Pdp sent an update)
+ public boolean isPdpCurrent(DroolsPdp pdp);
+
+ // Updates DESIGNATED boolean in PDP record.
+ public void setDesignated(DroolsPdp pdp, boolean designated);
+
+ // Marks droolspdpentity.DESIGNATED=false, so another PDP-D will go active.
+ public void standDownPdp(String pdpId);
+
+ // This is used in a JUnit test environment to manually
+ // insert a PDP
+ public void insertPdp(DroolsPdp pdp);
+
+ // This is used in a JUnit test environment to manually
+ // delete a PDP
+ public void deletePdp(String pdpId);
+
+ // This is used in a JUnit test environment to manually
+ // clear the droolspdpentity table.
+ public void deleteAllPdps();
+
+ // This is used in a JUnit test environment to manually
+ // get a PDP
+ public DroolsPdpEntity getPdp(String pdpId);
+
+ // Used by DroolsPdpsElectionHandler to determine if the currently designated
+ // PDP has failed.
+ public boolean hasDesignatedPdpFailed(Collection<DroolsPdp> pdps);
+
+
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java
new file mode 100644
index 0000000..6edf11f
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java
@@ -0,0 +1,1076 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Date;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import org.onap.policy.common.im.StateManagement;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.onap.policy.drools.statemanagement.StateManagementFeatureAPI;
+
+public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
+ // get an instance of logger
+ private final static Logger logger = LoggerFactory.getLogger(DroolsPdpsElectionHandler.class);
+ private DroolsPdpsConnector pdpsConnector;
+ private Object pdpsConnectorLock = new Object();
+ private Object checkUpdateWorkerLock = new Object();
+ private Object checkWaitTimerLock = new Object();
+ private Object designationWaiterLock = new Object();
+
+ /*
+ * Must be static, so it can be referenced by JpaDroolsPdpsConnector,
+ * without requiring a reference to the election handler instantiation.
+ */
+ private static DroolsPdp myPdp;
+
+ private DesignationWaiter designationWaiter;
+ private Timer updateWorker;
+ private Timer waitTimer;
+ private Date updateWorkerLastRunDate;
+ private Date waitTimerLastRunDate;
+ private int pdpCheckInterval;
+ private int pdpUpdateInterval;
+ private volatile boolean isDesignated;
+
+ private String pdpdNowActive;
+ private String pdpdLastActive;
+
+ private StateManagementFeatureAPI stateManagementFeature;
+
+ public DroolsPdpsElectionHandler(DroolsPdpsConnector pdps, DroolsPdp myPdp){
+ pdpdNowActive = null;
+ pdpdLastActive = null;
+ this.pdpsConnector = pdps;
+ DroolsPdpsElectionHandler.myPdp = myPdp;
+ this.isDesignated = false;
+ pdpCheckInterval = 3000;
+ try{
+ pdpCheckInterval = Integer.parseInt(ActiveStandbyProperties.getProperty(ActiveStandbyProperties.PDP_CHECK_INVERVAL));
+ }catch(Exception e){
+ logger.error
+ ("Could not get pdpCheckInterval property. Using default", e);
+ }
+ pdpUpdateInterval = 2000;
+ try{
+ pdpUpdateInterval = Integer.parseInt(ActiveStandbyProperties.getProperty(ActiveStandbyProperties.PDP_UPDATE_INTERVAL));
+ }catch(Exception e){
+ logger.error
+ ("Could not get pdpUpdateInterval property. Using default", e);
+ }
+
+ Date now = new Date();
+
+ // Retrieve the ms since the epoch
+ long nowMs = now.getTime();
+
+ // Create the timer which will update the updateDate in DroolsPdpEntity table.
+ // This is the heartbeat
+ updateWorker = new Timer();
+
+ // Schedule the heartbeat to start in 100 ms and run at pdpCheckInterval ms thereafter
+ // NOTE: The first run of the TimerUpdateClass results in myPdp being added to the
+ // drools droolsPdpEntity table.
+ updateWorker.scheduleAtFixedRate(new TimerUpdateClass(), 100, pdpCheckInterval);
+ updateWorkerLastRunDate = new Date(nowMs + 100);
+
+ // Create the timer which will run the election algorithm
+ waitTimer = new Timer();
+
+ // Schedule it to start in startMs ms (so it will run after the updateWorker and run at pdpUpdateInterval ms thereafter
+ long startMs = getDWaiterStartMs();
+ designationWaiter = new DesignationWaiter();
+ waitTimer.scheduleAtFixedRate(designationWaiter, startMs, pdpUpdateInterval);
+ waitTimerLastRunDate = new Date(nowMs + startMs);
+
+ //Get the StateManagementFeature instance
+
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ if (feature.getResourceName().equals(myPdp.getPdpId()))
+ {
+ if(logger.isDebugEnabled()){
+ logger.debug("DroolsPdpsElectionHandler: Found StateManagementFeature"
+ + " with resourceName: {}", myPdp.getPdpId());
+ }
+ stateManagementFeature = feature;
+ break;
+ }
+ }
+ if(stateManagementFeature == null){
+ logger.error("DroolsPdpsElectionHandler failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", myPdp.getPdpId());
+ }
+ }
+
+ /*
+ * When the JpaDroolsPdpsConnector.standDown() method is invoked, it needs
+ * access to myPdp, so it can keep its designation status in sync with the
+ * DB.
+ */
+ public static void setMyPdpDesignated(boolean designated) {
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("setMyPdpDesignated: designated= {}", designated);
+ }
+ myPdp.setDesignated(designated);
+ }
+
+ private class DesignationWaiter extends TimerTask {
+ // get an instance of logger
+ private final Logger logger = LoggerFactory.getLogger(DesignationWaiter.class);
+
+ @Override
+ public void run() {
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: Entering");
+ }
+
+ // just here initially so code still works
+ if (pdpsConnector == null) {
+ waitTimerLastRunDate = new Date();
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWaiter.run (pdpsConnector==null) waitTimerLastRunDate = {}", waitTimerLastRunDate);
+ }
+
+ return;
+ }
+
+ synchronized (designationWaiterLock) {
+
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: Entering synchronized block");
+ }
+
+ checkUpdateWorkerTimer();
+
+ //It is possible that multiple PDPs are designated lead. So, we will make a list of all designated
+ //PDPs and then decide which one really should be designated at the end.
+ ArrayList<DroolsPdp> listOfDesignated = new ArrayList<DroolsPdp>();
+
+ Collection<DroolsPdp> pdps = pdpsConnector.getDroolsPdps();
+ DroolsPdp designatedPdp = null;
+
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: pdps.size= {}", pdps.size());
+ }
+
+ //This is only true if all designated PDPs have failed
+ boolean designatedPdpHasFailed = pdpsConnector.hasDesignatedPdpFailed(pdps);
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: designatedPdpHasFailed= {}", designatedPdpHasFailed);
+ }
+ for (DroolsPdp pdp : pdps) {
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: evaluating pdp ID: {}", pdp.getPdpId());
+ }
+
+ /*
+ * Note: side effect of isPdpCurrent is that any stale but
+ * designated PDPs will be marked as un-designated.
+ */
+ boolean isCurrent = pdpsConnector.isPdpCurrent(pdp);
+
+ /*
+ * We can't use stateManagement.getStandbyStatus() here, because
+ * we need the standbyStatus, not for this PDP, but for the PDP
+ * being processed by this loop iteration.
+ */
+ String standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
+ if(standbyStatus==null){
+ // Treat this case as a cold standby -- if we
+ // abort here, no sessions will be created in a
+ // single-node test environment.
+ standbyStatus = StateManagement.COLD_STANDBY;
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: PDP= {}, isCurrent= {}", pdp.getPdpId(), isCurrent);
+ }
+
+ /*
+ * There are 4 combinations of isDesignated and isCurrent. We will examine each one in-turn
+ * and evaluate the each pdp in the list of pdps against each combination.
+ *
+ * This is the first combination of isDesignated and isCurrent
+ */
+ if (pdp.isDesignated() && isCurrent) {
+ //It is current, but it could have a standbystatus=coldstandby / hotstandby
+ //If so, we need to stand it down and demote it
+ if(!standbyStatus.equals(StateManagement.PROVIDING_SERVICE)){
+ if(pdp.getPdpId().equals(myPdp.getPdpId())){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp {} is current and designated, "
+ + "butstandbystatus is not providingservice. "
+ + " Executing stateManagement.demote()" + "\n\n", myPdp.getPdpId());
+ }
+ // So, we must demote it
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller shutdown
+ //This will change isDesignated and it can enter another if(combination) below
+ pdpsConnector.standDownPdp(pdp.getPdpId());
+ myPdp.setDesignated(false);
+ isDesignated = false;
+ if(!(standbyStatus.equals(StateManagement.HOT_STANDBY) ||
+ standbyStatus.equals(StateManagement.COLD_STANDBY))){
+ /*
+ * Only demote it if it appears it has not already been demoted. Don't worry
+ * about synching with the topic endpoint states. That is done by the
+ * refreshStateAudit
+ */
+ stateManagementFeature.demote();
+ }
+ //update the standbystatus to check in a later combination of isDesignated and isCurrent
+ standbyStatus=stateManagementFeature.getStandbyStatus(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error
+ ("DesignatedWaiter.run: myPdp: {} "
+ + "Caught Exception attempting to demote myPdp,"
+ + "message= {}", myPdp.getPdpId(), e.getMessage());
+ }
+ }else{
+ // Don't demote a remote PDP that is current. It should catch itself
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp {} is current and designated, "
+ + "but standbystatus is not providingservice. "
+ + " Cannot execute stateManagement.demote() since it it is not myPdp\n\n", myPdp.getPdpId());
+ }
+ }
+
+ }else{
+ // If we get here, it is ok to be on the list
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: PDP= {} is designated, current and {} Noting PDP as "
+ + "designated, standbyStatus= {}", pdp.getPdpId(), standbyStatus, standbyStatus);
+ }
+ listOfDesignated.add(pdp);
+ }
+
+
+ }
+
+
+ /*
+ * The second combination of isDesignated and isCurrent
+ *
+ * PDP is designated but not current; it has failed. So we stand it down (it doesn't matter what
+ * its standbyStatus is). None of these go on the list.
+ */
+ if (pdp.isDesignated() && !isCurrent) {
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("INFO: DesignatedWaiter.run: PDP= {} is currently designated but is not current; "
+ + "it has failed. Standing down. standbyStatus= {}", pdp.getPdpId(), standbyStatus);
+ }
+ /*
+ * Changes designated to 0 but it is still potentially providing service
+ * Will affect isDesignated, so, it can enter an if(combination) below
+ */
+ pdpsConnector.standDownPdp(pdp.getPdpId());
+
+ //need to change standbystatus to coldstandby
+ if (pdp.getPdpId().equals(myPdp.getPdpId())){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp {} is not Current. "
+ + " Executing stateManagement.disableFailed()\n\n", myPdp.getPdpId());
+ }
+ // We found that myPdp is designated but not current
+ // So, we must cause it to disableFail
+ try {
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp, false);
+ isDesignated = false;
+ stateManagementFeature.disableFailed();
+ } catch (Exception e) {
+ logger.error
+ ("DesignatedWaiter.run: myPdp: {} Caught Exception "
+ + "attempting to disableFail myPdp {}, message= {}",
+ myPdp.getPdpId(), myPdp.getPdpId(), e.getMessage());
+ }
+ } else { //it is a remote PDP that is failed
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: PDP {} is not Current. "
+ + " Executing stateManagement.disableFailed(otherResourceName)\n\n", pdp.getPdpId() );
+ }
+ // We found a PDP is designated but not current
+ // We already called standdown(pdp) which will change designated to false
+ // Now we need to disableFail it to get its states in synch. The standbyStatus
+ // should equal coldstandby
+ try {
+ stateManagementFeature.disableFailed(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error
+ ("DesignatedWaiter.run: for PDP {} Caught Exception attempting to "
+ + "disableFail({}), message= {}",
+ pdp.getPdpId(), pdp.getPdpId(), e.getMessage());
+ }
+
+ }
+ continue; //we are not going to do anything else with this pdp
+ }
+
+ /*
+ * The third combination of isDesignated and isCurrent
+ * /*
+ * If a PDP is not currently designated but is providing service (erroneous, but recoverable) or hot standby
+ * we can add it to the list of possible designated if all the designated have failed
+ */
+ if (!pdp.isDesignated() && isCurrent){
+ if(!(standbyStatus.equals(StateManagement.HOT_STANDBY) ||
+ standbyStatus.equals(StateManagement.COLD_STANDBY))){
+ if(logger.isDebugEnabled()){
+ logger.debug("\n\nDesignatedWaiter.run: PDP {}"
+ + " is NOT designated but IS current and"
+ + " has a standbystatus= {}", pdp.getPdpId(), standbyStatus);
+ }
+ // Since it is current, we assume it can adjust its own state.
+ // We will demote if it is myPdp
+ if(pdp.getPdpId().equals(myPdp.getPdpId())){
+ //demote it
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWaiter.run: PDP {} going to "
+ + "setDesignated = false and calling stateManagement.demote", pdp.getPdpId());
+ }
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller shutdown
+ pdpsConnector.setDesignated(myPdp, false);
+ myPdp.setDesignated(false);
+ isDesignated = false;
+ //This is definitely not a redundant call. It is attempting to correct a problem
+ stateManagementFeature.demote();
+ //recheck the standbystatus
+ standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error
+ ("DesignatedWaiter.run: myPdp: {} Caught Exception "
+ + "attempting to demote myPdp {}, message = {}", myPdp.getPdpId(),
+ myPdp.getPdpId(), e.getMessage());
+ }
+
+ }
+ }
+ if(standbyStatus.equals(StateManagement.HOT_STANDBY) && designatedPdpHasFailed){
+ //add it to the list
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("INFO: DesignatedWaiter.run: PDP= {}"
+ + " is not designated but is {} and designated PDP "
+ + "has failed. standbyStatus= {}", pdp.getPdpId(),
+ standbyStatus, standbyStatus);
+ }
+ listOfDesignated.add(pdp);
+ }
+ continue; //done with this one
+ }
+
+ /*
+ * The fourth combination of isDesignated and isCurrent
+ *
+ * We are not going to put any of these on the list since it appears they have failed.
+
+ *
+ */
+ if(!pdp.isDesignated() && !isCurrent) {
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("INFO: DesignatedWaiter.run: PDP= {} "
+ + "designated= {}, current= {}, "
+ + "designatedPdpHasFailed= {}, "
+ + "standbyStatus= {}",pdp.getPdpId(),
+ pdp.isDesignated(), isCurrent, designatedPdpHasFailed, standbyStatus);
+ }
+ if(!standbyStatus.equals(StateManagement.COLD_STANDBY)){
+ //stand it down
+ //disableFail it
+ pdpsConnector.standDownPdp(pdp.getPdpId());
+ if(pdp.getPdpId().equals(myPdp.getPdpId())){
+ /*
+ * I don't actually know how this condition could happen, but if it did, we would want
+ * to declare it failed.
+ */
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp {} is !current and !designated, "
+ + " Executing stateManagement.disableFailed()\n\n", myPdp.getPdpId());
+ }
+ // So, we must disableFail it
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller shutdown
+ pdpsConnector.setDesignated(myPdp, false);
+ myPdp.setDesignated(false);
+ isDesignated = false;
+ stateManagementFeature.disableFailed();
+ } catch (Exception e) {
+ logger.error
+ ("DesignatedWaiter.run: myPdp: {} Caught Exception attempting to "
+ + "disableFail myPdp {}, message= {}",
+ myPdp.getPdpId(), myPdp.getPdpId(), e.getMessage());
+ }
+ }else{//it is remote
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp {} is !current and !designated, "
+ + " Executing stateManagement.disableFailed({})\n\n",
+ myPdp.getPdpId(), pdp.getPdpId());
+ }
+ // We already called standdown(pdp) which will change designated to false
+ // Now we need to disableFail it to get its states in sync. StandbyStatus = coldstandby
+ try {
+ stateManagementFeature.disableFailed(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error
+ ("DesignatedWaiter.run: for PDP {}"
+ + " Caught Exception attempting to disableFail({})"
+ + ", message=", pdp.getPdpId(), pdp.getPdpId(), e.getMessage());
+ }
+ }
+ }
+ }
+
+
+ } // end pdps loop
+
+ /*
+ * We have checked the four combinations of isDesignated and isCurrent. Where appropriate,
+ * we added the PDPs to the potential list of designated pdps
+ *
+ * We need to give priority to pdps on the same site that is currently being used
+ * First, however, we must sanitize the list of designated to make sure their are
+ * only designated members or non-designated members. There should not be both in
+ * the list. Because there are real time delays, it is possible that both types could
+ * be on the list.
+ */
+
+ listOfDesignated = santizeDesignatedList(listOfDesignated);
+
+ /*
+ * We need to figure out the last pdp that was the primary so we can get the last site
+ * name and the last session numbers. We need to create a "dummy" droolspdp since
+ * it will be used in later comparisons and cannot be null.
+ */
+
+ DroolsPdp mostRecentPrimary = computeMostRecentPrimary(pdps, listOfDesignated);
+
+ if(mostRecentPrimary != null){
+ pdpdLastActive = mostRecentPrimary.getPdpId();
+ }
+
+
+ /*
+ * It is possible to get here with more than one pdp designated and providingservice. This normally
+ * occurs when there is a race condition with multiple nodes coming up at the same time. If that is
+ * the case we must determine which one is the one that should be designated and which one should
+ * be demoted.
+ *
+ * It is possible to have 0, 1, 2 or more but not all, or all designated.
+ * If we have one designated and current, we chose it and are done
+ * If we have 2 or more, but not all, we must determine which one is in the same site as
+ * the previously designated pdp.
+ */
+
+ designatedPdp = computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
+ if(designatedPdp != null){
+ pdpdNowActive = designatedPdp.getPdpId();
+ }
+
+ if (designatedPdp == null) {
+ logger.warn
+ ("WARNING: DesignatedWaiter.run: No viable PDP found to be Designated. designatedPdp still null.");
+ // Just to be sure the parameters are correctly set
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp,false);
+ isDesignated = false;
+
+ waitTimerLastRunDate = new Date();
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWaiter.run (designatedPdp == null) waitTimerLastRunDate = {}", waitTimerLastRunDate);
+ }
+
+ return;
+
+ } else if (designatedPdp.getPdpId().equals(myPdp.getPdpId())) {
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: designatedPdp is PDP={}", myPdp.getPdpId());
+ }
+ /*
+ * update function expects myPdp.isDesignated to be true.
+ */
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller init
+ myPdp.setDesignated(true);
+ myPdp.setDesignatedDate(new Date());
+ pdpsConnector.setDesignated(myPdp, true);
+ isDesignated = true;
+ String standbyStatus = stateManagementFeature.getStandbyStatus();
+ if(!standbyStatus.equals(StateManagement.PROVIDING_SERVICE)){
+ /*
+ * Only call promote if it is not already in the right state. Don't worry about
+ * synching the lower level topic endpoint states. That is done by the
+ * refreshStateAudit.
+ * Note that we need to fetch the session list from 'mostRecentPrimary'
+ * at this point -- soon, 'mostRecentPrimary' will be set to this host.
+ */
+ //this.sessions = mostRecentPrimary.getSessions();
+ stateManagementFeature.promote();
+ }
+ } catch (Exception e) {
+ logger.error
+ ("ERROR: DesignatedWaiter.run: Caught Exception attempting to promote PDP={}"
+ + ", message=", myPdp.getPdpId(), e.getMessage());
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp,false);
+ isDesignated = false;
+ //If you can't promote it, demote it
+ try {
+ String standbyStatus = stateManagementFeature.getStandbyStatus();
+ if(!(standbyStatus.equals(StateManagement.HOT_STANDBY) ||
+ standbyStatus.equals(StateManagement.COLD_STANDBY))){
+ /*
+ * Only call demote if it is not already in the right state. Don't worry about
+ * synching the lower level topic endpoint states. That is done by the
+ * refreshStateAudit.
+ */
+ stateManagementFeature.demote();
+ }
+ } catch (Exception e1) {
+ logger.error
+ ("ERROR: DesignatedWaiter.run: Caught StandbyStatusException "
+ + "attempting to promote then demote PDP={}, message=",
+ myPdp.getPdpId(), e1.getMessage());
+ }
+
+ }
+ waitTimerLastRunDate = new Date();
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWaiter.run (designatedPdp.getPdpId().equals(myPdp.getPdpId())) "
+ + "waitTimerLastRunDate = " + waitTimerLastRunDate);
+ }
+
+ return;
+ }
+ isDesignated = false;
+
+ } // end synchronized
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: myPdp: {}; Returning, isDesignated= {}",
+ isDesignated, myPdp.getPdpId());
+ }
+
+ Date tmpDate = new Date();
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWaiter.run (end of run) waitTimerLastRunDate = {}", tmpDate);
+ }
+
+ waitTimerLastRunDate = tmpDate;
+
+ }catch(Exception e){
+ logger.error("DesignatedWaiter.run caught an unexpected exception: ", e);
+ }
+ } // end run
+ }
+
+ public ArrayList<DroolsPdp> santizeDesignatedList(ArrayList<DroolsPdp> listOfDesignated){
+
+ boolean containsDesignated = false;
+ boolean containsHotStandby = false;
+ ArrayList<DroolsPdp> listForRemoval = new ArrayList<DroolsPdp>();
+ for(DroolsPdp pdp : listOfDesignated){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run sanitizing: pdp = {}"
+ + " isDesignated = {}",pdp.getPdpId(), pdp.isDesignated());
+ }
+ if(pdp.isDesignated()){
+ containsDesignated = true;
+ }else {
+ containsHotStandby = true;
+ listForRemoval.add(pdp);
+ }
+ }
+ if(containsDesignated && containsHotStandby){
+ //remove the hot standby from the list
+ listOfDesignated.removeAll(listForRemoval);
+ containsHotStandby = false;
+ }
+ return listOfDesignated;
+ }
+
+ public DroolsPdp computeMostRecentPrimary(Collection<DroolsPdp> pdps, ArrayList<DroolsPdp> listOfDesignated){
+ boolean containsDesignated = false;
+ for(DroolsPdp pdp : listOfDesignated){
+ if(pdp.isDesignated()){
+ containsDesignated = true;
+ }
+ }
+ DroolsPdp mostRecentPrimary = new DroolsPdpImpl(null, true, 1, new Date(0));
+ mostRecentPrimary.setSiteName(null);
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run listOfDesignated.size() = {}", listOfDesignated.size());
+ }
+ if(listOfDesignated.size() <=1){
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWainter.run: listOfDesignated.size <=1");
+ }
+ //Only one or none is designated or hot standby. Choose the latest designated date
+ for(DroolsPdp pdp : pdps){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run pdp = {}"
+ + " pdp.getDesignatedDate() = {}", pdp.getPdpId(), pdp.getDesignatedDate());
+ }
+ if(pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0){
+ mostRecentPrimary = pdp;
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run mostRecentPrimary = {}", mostRecentPrimary.getPdpId());
+ }
+ }
+ }
+ }else if(listOfDesignated.size() == pdps.size()){
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWainter.run: listOfDesignated.size = pdps.size() which is {}", pdps.size());
+ }
+ //They are all designated or all hot standby.
+ mostRecentPrimary = null;
+ for(DroolsPdp pdp : pdps){
+ if(mostRecentPrimary == null){
+ mostRecentPrimary = pdp;
+ continue;
+ }
+ if(containsDesignated){ //Choose the site of the first designated date
+ if(pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) < 0){
+ mostRecentPrimary = pdp;
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run mostRecentPrimary = {}", mostRecentPrimary.getPdpId());
+ }
+ }
+ }else{ //Choose the site with the latest designated date
+ if(pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0){
+ mostRecentPrimary = pdp;
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run mostRecentPrimary = {}", mostRecentPrimary.getPdpId());
+ }
+ }
+ }
+ }
+ }else{
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWainter.run: Some but not all are designated or hot standby. ");
+ }
+ //Some but not all are designated or hot standby.
+ if(containsDesignated){
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWainter.run: containsDesignated = {}", containsDesignated);
+ }
+ /*
+ * The list only contains designated. This is a problem. It is most likely a race
+ * condition that resulted in two thinking they should be designated. Choose the
+ * site with the latest designated date for the pdp not included on the designated list.
+ * This should be the site that had the last designation before this race condition
+ * occurred.
+ */
+ for(DroolsPdp pdp : pdps){
+ if(listOfDesignated.contains(pdp)){
+ continue; //Don't consider this entry
+ }
+ if(pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0){
+ mostRecentPrimary = pdp;
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run mostRecentPrimary = {}", mostRecentPrimary.getPdpId());
+ }
+ }
+ }
+ }else{
+ if(logger.isDebugEnabled()){
+ logger.debug("DesignatedWainter.run: containsDesignated = {}", containsDesignated);
+ }
+ //The list only contains hot standby. Choose the site of the latest designated date
+ for(DroolsPdp pdp : pdps){
+ if(pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0){
+ mostRecentPrimary = pdp;
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run mostRecentPrimary = {}", mostRecentPrimary.getPdpId());
+ }
+ }
+ }
+ }
+ }
+ return mostRecentPrimary;
+ }
+
+ public DroolsPdp computeDesignatedPdp(ArrayList<DroolsPdp> listOfDesignated, DroolsPdp mostRecentPrimary){
+ DroolsPdp designatedPdp = null;
+ DroolsPdp lowestPriorityPdp = null;
+ if(listOfDesignated.size() > 1){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("DesignatedWaiter.run: myPdp: {} listOfDesignated.size(): {}", myPdp.getPdpId(), listOfDesignated.size());
+ }
+ DroolsPdp rejectedPdp = null;
+ DroolsPdp lowestPrioritySameSite = null;
+ DroolsPdp lowestPriorityDifferentSite = null;
+ for(DroolsPdp pdp : listOfDesignated){
+ // We need to determine if another PDP is the lowest priority
+ if(nullSafeEquals(pdp.getSiteName(),mostRecentPrimary.getSiteName())){
+ if(lowestPrioritySameSite == null){
+ if(lowestPriorityDifferentSite != null){
+ rejectedPdp = lowestPriorityDifferentSite;
+ }
+ lowestPrioritySameSite = pdp;
+ }else{
+ if(pdp.getPdpId().equals((lowestPrioritySameSite.getPdpId()))){
+ continue;//nothing to compare
+ }
+ if(pdp.comparePriority(lowestPrioritySameSite) <0){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
+ + " has lower priority than pdp ID: {}",myPdp.getPdpId(), pdp.getPdpId(),
+ lowestPrioritySameSite.getPdpId());
+ }
+ //we need to reject lowestPrioritySameSite
+ rejectedPdp = lowestPrioritySameSite;
+ lowestPrioritySameSite = pdp;
+ } else{
+ //we need to reject pdp and keep lowestPrioritySameSite
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {} "
+ + " has higher priority than pdp ID: {}", myPdp.getPdpId(),pdp.getPdpId(),
+ lowestPrioritySameSite.getPdpId());
+ }
+ rejectedPdp = pdp;
+ }
+ }
+ } else{
+ if(lowestPrioritySameSite != null){
+ //if we already have a candidate for same site, we don't want to bother with different sites
+ rejectedPdp = pdp;
+ } else{
+ if(lowestPriorityDifferentSite == null){
+ lowestPriorityDifferentSite = pdp;
+ continue;
+ }
+ if(pdp.getPdpId().equals((lowestPriorityDifferentSite.getPdpId()))){
+ continue;//nothing to compare
+ }
+ if(pdp.comparePriority(lowestPriorityDifferentSite) <0){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
+ + " has lower priority than pdp ID: {}", myPdp.getPdpId(), pdp.getPdpId(),
+ lowestPriorityDifferentSite.getPdpId());
+ }
+ //we need to reject lowestPriorityDifferentSite
+ rejectedPdp = lowestPriorityDifferentSite;
+ lowestPriorityDifferentSite = pdp;
+ } else{
+ //we need to reject pdp and keep lowestPriorityDifferentSite
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
+ + " has higher priority than pdp ID: {}", myPdp.getPdpId(), pdp.getPdpId(),
+ lowestPriorityDifferentSite.getPdpId());
+ }
+ rejectedPdp = pdp;
+ }
+ }
+ }
+ // If the rejectedPdp is myPdp, we need to stand it down and demote it. Each pdp is responsible
+ // for demoting itself
+ if(rejectedPdp != null && nullSafeEquals(rejectedPdp.getPdpId(),myPdp.getPdpId())){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp: {} listOfDesignated myPdp ID: {}"
+ + " is NOT the lowest priority. Executing stateManagement.demote()\n\n", myPdp.getPdpId(),
+ myPdp.getPdpId());
+ }
+ // We found that myPdp is on the listOfDesignated and it is not the lowest priority
+ // So, we must demote it
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller shutdown
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp, false);
+ isDesignated = false;
+ String standbyStatus = stateManagementFeature.getStandbyStatus();
+ if(!(standbyStatus.equals(StateManagement.HOT_STANDBY) ||
+ standbyStatus.equals(StateManagement.COLD_STANDBY))){
+ /*
+ * Only call demote if it is not already in the right state. Don't worry about
+ * synching the lower level topic endpoint states. That is done by the
+ * refreshStateAudit.
+ */
+ stateManagementFeature.demote();
+ }
+ } catch (Exception e) {
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp, false);
+ isDesignated = false;
+ logger.error
+ ("DesignatedWaiter.run: myPdp: {} Caught Exception attempting to "
+ + "demote myPdp {} myPdp.getPdpId(), message= {}", myPdp.getPdpId(),
+ e.getMessage());
+ }
+ }
+ } //end: for(DroolsPdp pdp : listOfDesignated)
+ if(lowestPrioritySameSite != null){
+ lowestPriorityPdp = lowestPrioritySameSite;
+ } else {
+ lowestPriorityPdp = lowestPriorityDifferentSite;
+ }
+ //now we have a valid value for lowestPriorityPdp
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\n\nDesignatedWaiter.run: myPdp: {} listOfDesignated "
+ + "found the LOWEST priority pdp ID: {} "
+ + " It is now the designatedPpd from the perspective of myPdp ID: {} \n\n",
+ myPdp.getPdpId(), lowestPriorityPdp.getPdpId(), myPdp);
+ }
+ designatedPdp = lowestPriorityPdp;
+
+ } else if(listOfDesignated.isEmpty()){
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\nDesignatedWaiter.run: myPdp: {} listOfDesignated is: EMPTY.", myPdp.getPdpId());
+ }
+ designatedPdp = null;
+ } else{ //only one in listOfDesignated
+ if(logger.isDebugEnabled()){
+ logger.debug
+ ("\nDesignatedWaiter.run: myPdp: {} listOfDesignated "
+ + "has ONE entry. PDP ID: {}", myPdp.getPdpId(), listOfDesignated.get(0).getPdpId());
+ }
+ designatedPdp = listOfDesignated.get(0);
+ }
+ return designatedPdp;
+
+ }
+
+ private class TimerUpdateClass extends TimerTask{
+
+ @Override
+ public void run() {
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("TimerUpdateClass.run: entry");
+ }
+ checkWaitTimer();
+ synchronized(pdpsConnectorLock){
+
+ myPdp.setUpdatedDate(new Date());
+ /*
+ Redundant with DesignationWaiter and this updates the date every
+ cycle instead of just when the state changes.
+ if(myPdp.isDesignated()){
+ myPdp.setDesignatedDate(new Date());
+ }
+ */
+ pdpsConnector.update(myPdp);
+
+ Date tmpDate = new Date();
+ if(logger.isDebugEnabled()){
+ logger.debug("TimerUpdateClass.run: updateWorkerLastRunDate = {}", tmpDate);
+ }
+
+ updateWorkerLastRunDate = tmpDate;
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("TimerUpdateClass.run.exit");
+ }
+ }catch(Exception e){
+ logger.error("TimerUpdateClass.run caught an unexpected exception: ", e);
+ }
+ }
+ }
+ @Override
+ public void checkThreadStatus() {
+ checkUpdateWorkerTimer();
+ checkWaitTimer();
+ }
+
+ private void checkUpdateWorkerTimer(){
+ synchronized(checkUpdateWorkerLock){
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("checkUpdateWorkerTimer: entry");
+ }
+ Date now = new Date();
+ long nowMs = now.getTime();
+ long updateWorkerMs = updateWorkerLastRunDate.getTime();
+ //give it 2 second cushion
+ if((nowMs - updateWorkerMs) > pdpCheckInterval + 2000){
+ logger.error("checkUpdateWorkerTimer: nowMs - updateWorkerMs = {} "
+ + ", exceeds pdpCheckInterval + 2000 = {} "
+ + "Will reschedule updateWorker timer",(nowMs - updateWorkerMs), (pdpCheckInterval + 2000));
+
+ try{
+ updateWorker.cancel();
+ // Recalculate the time because this is a synchronized section and the thread could have
+ // been blocked.
+ now = new Date();
+ nowMs = now.getTime();
+ updateWorker = new Timer();
+ // reset the updateWorkerLastRunDate
+ updateWorkerLastRunDate = new Date(nowMs + 100);
+ //execute the first time in 100 ms
+ updateWorker.scheduleAtFixedRate(new TimerUpdateClass(), 100, pdpCheckInterval);
+ if(logger.isDebugEnabled()){
+ logger.debug("checkUpdateWorkerTimer: Scheduling updateWorker timer to start in 100 ms ");
+ }
+ }catch(Exception e){
+ logger.error("checkUpdateWorkerTimer: Caught unexpected Exception: ", e);
+ // Recalculate the time because this is a synchronized section and the thread could have
+ // been blocked.
+ now = new Date();
+ nowMs = now.getTime();
+ updateWorker = new Timer();
+ updateWorkerLastRunDate = new Date(nowMs + 100);
+ updateWorker.scheduleAtFixedRate(new TimerUpdateClass(), 100, pdpCheckInterval);
+ if(logger.isDebugEnabled()){
+ logger.debug("checkUpdateWorkerTimer: Attempting to schedule updateWorker timer in 100 ms");
+ }
+ }
+
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("checkUpdateWorkerTimer: exit");
+ }
+ }catch(Exception e){
+ logger.error("checkUpdateWorkerTimer: caught unexpected exception: ", e);
+ }
+ }
+ }
+
+ private void checkWaitTimer(){
+ synchronized(checkWaitTimerLock){
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("checkWaitTimer: entry");
+ }
+ Date now = new Date();
+ long nowMs = now.getTime();
+ long waitTimerMs = waitTimerLastRunDate.getTime();
+
+ //give it 2 times leeway
+ if((nowMs - waitTimerMs) > 2*pdpUpdateInterval){
+ logger.error("checkWaitTimer: nowMs - waitTimerMs = {}"
+ + ", exceeds pdpUpdateInterval + 2000 = {}"
+ + "Will reschedule waitTimer timer", (nowMs - waitTimerMs), (2*pdpUpdateInterval));
+
+ try{
+ // Recalculate since the thread could have been stalled on the synchronize()
+ nowMs = (new Date()).getTime();
+ // Time to the start of the next pdpUpdateInterval multiple
+ long startMs = getDWaiterStartMs();
+ waitTimer.cancel();
+ designationWaiter = new DesignationWaiter();
+ waitTimer = new Timer();
+ waitTimerLastRunDate = new Date(nowMs + startMs);
+ waitTimer.scheduleAtFixedRate(designationWaiter, startMs, pdpUpdateInterval);
+ if(logger.isDebugEnabled()){
+ logger.debug("checkWaitTimer: Scheduling waitTimer timer to start in {} ms", startMs);
+ }
+ }catch(Exception e){
+ logger.error("checkWaitTimer: Caught unexpected Exception: ", e);
+ // Recalculate since the thread could have been stalled on the synchronize()
+ nowMs = (new Date()).getTime();
+ // Time to the start of the next pdpUpdateInterval multiple
+ long startMs = getDWaiterStartMs();
+ designationWaiter = new DesignationWaiter();
+ waitTimer = new Timer();
+ waitTimerLastRunDate = new Date(nowMs + startMs);
+ waitTimer.scheduleAtFixedRate(designationWaiter, startMs, pdpUpdateInterval);
+ if(logger.isDebugEnabled()){
+ logger.debug("checkWaitTimer: Scheduling waitTimer timer in {} ms", startMs);
+ }
+ }
+
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("checkWaitTimer: exit");
+ }
+ }catch(Exception e){
+ logger.error("checkWaitTimer: caught unexpected exception: ", e);
+ }
+ }
+ }
+
+ private long getDWaiterStartMs(){
+ Date now = new Date();
+
+ // Retrieve the ms since the epoch
+ long nowMs = now.getTime();
+
+ // Time since the end of the last pdpUpdateInterval multiple
+ long nowModMs = nowMs % pdpUpdateInterval;
+
+ // Time to the start of the next pdpUpdateInterval multiple
+ long startMs = 2*pdpUpdateInterval - nowModMs;
+
+ // Give the start time a minimum of a 5 second cushion
+ if(startMs < 5000){
+ // Start at the beginning of following interval
+ startMs = pdpUpdateInterval + startMs;
+ }
+ return startMs;
+ }
+
+ private boolean nullSafeEquals(Object one, Object two){
+ if(one == null && two == null){
+ return true;
+ }
+ if(one != null && two != null){
+ return one.equals(two);
+ }
+ return false;
+ }
+
+ public String getPdpdNowActive(){
+ return pdpdNowActive;
+ }
+
+ public String getPdpdLastActive(){
+ return pdpdLastActive;
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java
new file mode 100644
index 0000000..0d931ac
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java
@@ -0,0 +1,636 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+import java.util.Collection;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.FlushModeType;
+import javax.persistence.LockModeType;
+import javax.persistence.Query;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class JpaDroolsPdpsConnector implements DroolsPdpsConnector {
+
+ // get an instance of logger
+ private static final Logger logger = LoggerFactory.getLogger(JpaDroolsPdpsConnector.class);
+ private EntityManagerFactory emf;
+
+
+ //not sure if we want to use the same entity manager factory for drools session and pass it in here, or create a new one
+ public JpaDroolsPdpsConnector(EntityManagerFactory emf){
+ this.emf = emf;
+ }
+ @Override
+ public Collection<DroolsPdp> getDroolsPdps() {
+ //return a list of all the DroolsPdps in the database
+ EntityManager em = emf.createEntityManager();
+ try {
+ em.getTransaction().begin();
+ Query droolsPdpsListQuery = em.createQuery("SELECT p FROM DroolsPdpEntity p");
+ List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ LinkedList<DroolsPdp> droolsPdpsReturnList = new LinkedList<DroolsPdp>();
+ for(Object o : droolsPdpsList){
+ if(o instanceof DroolsPdp){
+ //Make sure it is not a cached version
+ em.refresh((DroolsPdpEntity)o);
+ droolsPdpsReturnList.add((DroolsPdp)o);
+ if (logger.isDebugEnabled()) {
+ DroolsPdp droolsPdp = (DroolsPdp)o;
+ logger.debug("getDroolsPdps: PDP= {}"
+ + ", isDesignated= {}"
+ + ", updatedDate= {}"
+ + ", priority= {}", droolsPdp.getPdpId(), droolsPdp.isDesignated(),
+ droolsPdp.getUpdatedDate(), droolsPdp.getPriority());
+ }
+ }
+ }
+ try{
+ em.getTransaction().commit();
+ }catch(Exception e){
+ logger.error
+ ("Cannot commit getDroolsPdps() transaction", e);
+ }
+ return droolsPdpsReturnList;
+ } finally {
+ cleanup(em, "getDroolsPdps");
+ }
+ }
+
+ private boolean nullSafeEquals(Object one, Object two){
+ if(one == null && two == null){
+ return true;
+ }
+ if(one != null && two != null){
+ return one.equals(two);
+ }
+ return false;
+ }
+
+ @Override
+ public void update(DroolsPdp pdp) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("update: Entering, pdpId={}", pdp.getPdpId());
+ }
+
+ //this is to update our own pdp in the database
+ EntityManager em = emf.createEntityManager();
+ try {
+ em.getTransaction().begin();
+ Query droolsPdpsListQuery = em.createQuery("SELECT p FROM DroolsPdpEntity p WHERE p.pdpId=:pdpId");
+ droolsPdpsListQuery.setParameter("pdpId", pdp.getPdpId());
+ List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ DroolsPdpEntity droolsPdpEntity;
+ if(droolsPdpsList.size() == 1 && (droolsPdpsList.get(0) instanceof DroolsPdpEntity)){
+ droolsPdpEntity = (DroolsPdpEntity)droolsPdpsList.get(0);
+ em.refresh(droolsPdpEntity); //Make sure we have current values
+ Date currentDate = new Date();
+ long difference = currentDate.getTime()-droolsPdpEntity.getUpdatedDate().getTime();
+ //just set some kind of default here
+ long pdpTimeout = 15000;
+ try{
+ pdpTimeout = Long.parseLong(ActiveStandbyProperties.getProperty(ActiveStandbyProperties.PDP_TIMEOUT));
+ }catch(Exception e){
+ logger.error
+ ("Could not get PDP timeout property, using default.", e);
+ }
+ boolean isCurrent = difference<pdpTimeout;
+ if (logger.isDebugEnabled()) {
+ logger.debug("update: PDP= {}, isCurrent={}"
+ + " difference= {}"
+ + ", pdpTimeout= {}, designated= {}",
+ pdp.getPdpId(), isCurrent, difference, pdpTimeout, droolsPdpEntity.isDesignated());
+ }
+ } else {
+ if (logger.isDebugEnabled()) {
+ logger.debug("update: For PDP={}"
+ + ", instantiating new DroolsPdpEntity", pdp.getPdpId());
+ }
+ droolsPdpEntity = new DroolsPdpEntity();
+ em.persist(droolsPdpEntity);
+ droolsPdpEntity.setPdpId(pdp.getPdpId());
+ }
+ if(droolsPdpEntity.getPriority() != pdp.getPriority()){
+ droolsPdpEntity.setPriority(pdp.getPriority());
+ }
+ if(!droolsPdpEntity.getUpdatedDate().equals(pdp.getUpdatedDate())){
+ droolsPdpEntity.setUpdatedDate(pdp.getUpdatedDate());
+ }
+ /*if(!droolsPdpEntity.getDesignatedDate().equals(pdp.getDesignatedDate())){
+ droolsPdpEntity.setDesignatedDate(pdp.getDesignatedDate());
+ } The designated date is only set below when this first becomes designated*/
+ if(!nullSafeEquals(droolsPdpEntity.getSiteName(),pdp.getSiteName())){
+ droolsPdpEntity.setSiteName(pdp.getSiteName());
+ }
+
+ if(droolsPdpEntity.isDesignated() != pdp.isDesignated()){
+ if (logger.isDebugEnabled()) {
+ logger.debug("update: pdpId={}"
+ + ", pdp.isDesignated={}"
+ + ", droolsPdpEntity.pdpId= {}"
+ + ", droolsPdpEntity.isDesignated={}",
+ pdp.getPdpId(), pdp.isDesignated(),droolsPdpEntity.getPdpId(), droolsPdpEntity.isDesignated());
+ }
+ droolsPdpEntity.setDesignated(pdp.isDesignated());
+ //The isDesignated value is not the same and the new one == true
+ if(pdp.isDesignated()){
+ droolsPdpEntity.setDesignatedDate(new Date());
+ }
+ }
+ em.getTransaction().commit();
+ } finally {
+ cleanup(em, "update");
+ }
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("update: Exiting");
+ }
+
+ }
+
+ /*
+ * Note: A side effect of this boolean method is that if the PDP is designated but not current, the
+ * droolspdpentity.DESIGNATED column will be set to false (the PDP will be un-designated, i.e. marked as
+ * being in standby mode)
+ */
+ @Override
+ public boolean isPdpCurrent(DroolsPdp pdp) {
+
+ boolean isCurrent = isCurrent(pdp);
+
+ EntityManager em = emf.createEntityManager();
+ try{
+ if(!isCurrent && pdp.isDesignated()){
+ em.getTransaction().begin();
+ Query droolsPdpsListQuery = em.createQuery("SELECT p FROM DroolsPdpEntity p WHERE p.pdpId=:pdpId");
+ droolsPdpsListQuery.setParameter("pdpId", pdp.getPdpId());
+ List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ if(droolsPdpsList.size() == 1 && droolsPdpsList.get(0) instanceof DroolsPdpEntity){
+ if (logger.isDebugEnabled()) {
+ logger.debug("isPdpCurrent: PDP={} designated but not current; setting designated to false", pdp.getPdpId());
+ }
+ DroolsPdpEntity droolsPdpEntity = (DroolsPdpEntity)droolsPdpsList.get(0);
+ droolsPdpEntity.setDesignated(false);
+ em.getTransaction().commit();
+ } else {
+ logger.warn("isPdpCurrent: PDP={} is designated but not current; "
+ + "however it does not have a DB entry, so cannot set DESIGNATED to false!", pdp.getPdpId());
+ }
+ } else {
+ if (logger.isDebugEnabled()) {
+ logger.debug("isPdpCurrent: For PDP= {}, "
+ + "designated={}, isCurrent={}", pdp.getPdpId(), pdp.isDesignated(), isCurrent);
+ }
+ }
+ }catch(Exception e){
+ logger.error
+ ("Could not update expired record marked as designated in the database", e);
+ } finally {
+ cleanup(em, "isPdpCurrent");
+ }
+ return isCurrent;
+
+ }
+
+ @Override
+ public void setDesignated(DroolsPdp pdp, boolean designated) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("setDesignated: Entering, pdpId={}"
+ + ", designated={}", pdp.getPdpId(), designated);
+ }
+
+ EntityManager em = null;
+ try {
+ em = emf.createEntityManager();
+ em.getTransaction().begin();
+ Query droolsPdpsListQuery = em
+ .createQuery("SELECT p FROM DroolsPdpEntity p WHERE p.pdpId=:pdpId");
+ droolsPdpsListQuery.setParameter("pdpId", pdp.getPdpId());
+ List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(
+ LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ if (droolsPdpsList.size() == 1
+ && droolsPdpsList.get(0) instanceof DroolsPdpEntity) {
+ DroolsPdpEntity droolsPdpEntity = (DroolsPdpEntity) droolsPdpsList
+ .get(0);
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("setDesignated: PDP={}"
+ + " found, designated= {}"
+ + ", setting to {}", pdp.getPdpId(), droolsPdpEntity.isDesignated(),
+ designated);
+ }
+ droolsPdpEntity.setDesignated(designated);
+ if(designated){
+ em.refresh(droolsPdpEntity); //make sure we get the DB value
+ if(!droolsPdpEntity.isDesignated()){
+ droolsPdpEntity.setDesignatedDate(new Date());
+ }
+
+ }
+ em.getTransaction().commit();
+ } else {
+ logger.error("setDesignated: PDP={}"
+ + " not in DB; cannot update designation", pdp.getPdpId());
+ }
+ } catch (Exception e) {
+ logger.error("setDesignated: Caught Exception", e);
+ } finally {
+ cleanup(em, "setDesignated");
+ }
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("setDesignated: Exiting");
+ }
+
+ }
+
+
+ @Override
+ public void standDownPdp(String pdpId) {
+ if(logger.isDebugEnabled()){
+ logger.debug("standDownPdp: Entering, pdpId={}", pdpId);
+ }
+
+ EntityManager em = null;
+ try {
+ /*
+ * Start transaction.
+ */
+ em = emf.createEntityManager();
+ em.getTransaction().begin();
+
+ /*
+ * Get droolspdpentity record for this PDP and mark DESIGNATED as
+ * false.
+ */
+ Query droolsPdpsListQuery = em
+ .createQuery("SELECT p FROM DroolsPdpEntity p WHERE p.pdpId=:pdpId");
+ droolsPdpsListQuery.setParameter("pdpId", pdpId);
+ List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(
+ LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ DroolsPdpEntity droolsPdpEntity;
+ if (droolsPdpsList.size() == 1
+ && (droolsPdpsList.get(0) instanceof DroolsPdpEntity)) {
+ droolsPdpEntity = (DroolsPdpEntity) droolsPdpsList.get(0);
+ droolsPdpEntity.setDesignated(false);
+ em.persist(droolsPdpEntity);
+ if(logger.isDebugEnabled()){
+ logger.debug("standDownPdp: PDP={} persisted as non-designated.", pdpId );
+ }
+ } else {
+ logger.error("standDownPdp: Missing record in droolspdpentity for pdpId={}"
+ + "; cannot stand down PDP", pdpId);
+ }
+
+ /*
+ * End transaction.
+ */
+ em.getTransaction().commit();
+ cleanup(em, "standDownPdp");
+ em = null;
+
+ // Keep the election handler in sync with the DB
+ DroolsPdpsElectionHandler.setMyPdpDesignated(false);
+
+ } catch (Exception e) {
+ logger.error("standDownPdp: Unexpected Exception attempting to mark "
+ + "DESIGNATED as false for droolspdpentity, pdpId={}"
+ + ". Cannot stand down PDP; message={}", pdpId, e.getMessage(), e);
+ } finally {
+ cleanup(em, "standDownPdp");
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("standDownPdp: Exiting");
+ }
+
+ }
+
+ /*
+ * Determines whether or not a designated PDP has failed.
+ *
+ * Note: The update method, which is run periodically by the
+ * TimerUpdateClass, will un-designate a PDP that is stale.
+ */
+ @Override
+ public boolean hasDesignatedPdpFailed(Collection<DroolsPdp> pdps) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("hasDesignatedPdpFailed: Entering, pdps.size()={}", pdps.size());
+ }
+
+ boolean failed = true;
+ boolean foundDesignatedPdp = false;
+
+ for (DroolsPdp pdp : pdps) {
+
+ /*
+ * Normally, the update method will un-designate any stale PDP, but
+ * we check here to see if the PDP has gone stale since the update
+ * method was run.
+ *
+ * Even if we determine that the designated PDP is current, we keep
+ * going (we don't break), so we can get visibility into the other
+ * PDPs, when in DEBUG mode.
+ */
+ if (pdp.isDesignated() && isCurrent(pdp)) {
+ if (logger.isDebugEnabled()) {
+ logger.debug("hasDesignatedPdpFailed: Designated PDP={} is current", pdp.getPdpId());
+ }
+ failed = false;
+ foundDesignatedPdp = true;
+ } else if (pdp.isDesignated() && !isCurrent(pdp)) {
+ logger.error("hasDesignatedPdpFailed: Designated PDP={} has failed", pdp.getPdpId());
+ foundDesignatedPdp = true;
+ } else {
+ if (logger.isDebugEnabled()) {
+ logger.debug("hasDesignatedPdpFailed: PDP={} is not designated", pdp.getPdpId());
+ }
+ }
+ }
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("hasDesignatedPdpFailed: Exiting and returning, foundDesignatedPdp={}",
+ foundDesignatedPdp);
+ }
+ return failed;
+ }
+
+
+ private boolean isCurrent(DroolsPdp pdp) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("isCurrent: Entering, pdpId={}", pdp.getPdpId());
+ }
+
+ boolean current = false;
+
+ // Return if the current PDP is considered "current" based on whatever
+ // time box that may be.
+ // If the the PDP is not current, we should mark it as not primary in
+ // the database
+ Date currentDate = new Date();
+ long difference = currentDate.getTime()
+ - pdp.getUpdatedDate().getTime();
+ // just set some kind of default here
+ long pdpTimeout = 15000;
+ try {
+ pdpTimeout = Long.parseLong(ActiveStandbyProperties
+ .getProperty(ActiveStandbyProperties.PDP_TIMEOUT));
+ if (logger.isDebugEnabled()) {
+ logger.debug("isCurrent: pdp.timeout={}", pdpTimeout);
+ }
+ } catch (Exception e) {
+ logger.error
+ ("isCurrent: Could not get PDP timeout property, using default.", e);
+ }
+ current = difference < pdpTimeout;
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("isCurrent: Exiting, difference={}, pdpTimeout={}"
+ + "; returning current={}", difference, pdpTimeout, current);
+ }
+
+ return current;
+ }
+
+
+ /*
+ * Currently this method is only used in a JUnit test environment. Gets a
+ * PDP record from droolspdpentity table.
+ */
+ @Override
+ public DroolsPdpEntity getPdp(String pdpId) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("getPdp: Entering and getting PDP with pdpId={}", pdpId);
+ }
+
+ DroolsPdpEntity droolsPdpEntity = null;
+
+ EntityManager em = null;
+ try {
+ em = emf.createEntityManager();
+ em.getTransaction().begin();
+ Query droolsPdpsListQuery = em
+ .createQuery("SELECT p FROM DroolsPdpEntity p WHERE p.pdpId=:pdpId");
+ droolsPdpsListQuery.setParameter("pdpId", pdpId);
+ List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(
+ LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ if (droolsPdpsList.size() == 1
+ && droolsPdpsList.get(0) instanceof DroolsPdpEntity) {
+ droolsPdpEntity = (DroolsPdpEntity) droolsPdpsList.get(0);
+ if (logger.isDebugEnabled()) {
+ logger.debug("getPdp: PDP={}"
+ + " found, isDesignated={},"
+ + " updatedDate={}, "
+ + "priority={}", pdpId,
+ droolsPdpEntity.isDesignated(), droolsPdpEntity.getUpdatedDate(),
+ droolsPdpEntity.getPriority());
+ }
+
+ // Make sure the droolsPdpEntity is not a cached version
+ em.refresh(droolsPdpEntity);
+
+ em.getTransaction().commit();
+ } else {
+ logger.error("getPdp: PDP={} not found!?", pdpId);
+ }
+ } catch (Exception e) {
+ logger.error
+ ("getPdp: Caught Exception attempting to get PDP", e);
+ } finally {
+ cleanup(em, "getPdp");
+ }
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("getPdp: Returning droolsPdpEntity={}", droolsPdpEntity);
+ }
+ return droolsPdpEntity;
+
+ }
+
+ /*
+ * Normally this method should only be used in a JUnit test environment.
+ * Manually inserts a PDP record in droolspdpentity table.
+ */
+ @Override
+ public void insertPdp(DroolsPdp pdp) {
+ if(logger.isDebugEnabled()){
+ logger.debug("insertPdp: Entering and manually inserting PDP");
+ }
+
+ /*
+ * Start transaction
+ */
+ EntityManager em = emf.createEntityManager();
+ try {
+ em.getTransaction().begin();
+
+ /*
+ * Insert record.
+ */
+ DroolsPdpEntity droolsPdpEntity = new DroolsPdpEntity();
+ em.persist(droolsPdpEntity);
+ droolsPdpEntity.setPdpId(pdp.getPdpId());
+ droolsPdpEntity.setDesignated(pdp.isDesignated());
+ droolsPdpEntity.setPriority(pdp.getPriority());
+ droolsPdpEntity.setUpdatedDate(pdp.getUpdatedDate());
+ droolsPdpEntity.setSiteName(pdp.getSiteName());
+
+ /*
+ * End transaction.
+ */
+ em.getTransaction().commit();
+ } finally {
+ cleanup(em, "insertPdp");
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("insertPdp: Exiting");
+ }
+
+ }
+
+ /*
+ * Normally this method should only be used in a JUnit test environment.
+ * Manually deletes all PDP records in droolspdpentity table.
+ */
+ @Override
+ public void deleteAllPdps() {
+
+ if(logger.isDebugEnabled()){
+ logger.debug("deleteAllPdps: Entering");
+ }
+
+ /*
+ * Start transaction
+ */
+ EntityManager em = emf.createEntityManager();
+ try {
+ em.getTransaction().begin();
+
+ Query droolsPdpsListQuery = em
+ .createQuery("SELECT p FROM DroolsPdpEntity p");
+ @SuppressWarnings("unchecked")
+ List<DroolsPdp> droolsPdpsList = droolsPdpsListQuery.setLockMode(
+ LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
+ if(logger.isDebugEnabled()){
+ logger.debug("deleteAllPdps: Deleting {} PDPs", droolsPdpsList.size());
+ }
+ for (DroolsPdp droolsPdp : droolsPdpsList) {
+ String pdpId = droolsPdp.getPdpId();
+ deletePdp(pdpId);
+ }
+
+ /*
+ * End transaction.
+ */
+ em.getTransaction().commit();
+ } finally {
+ cleanup(em, "deleteAllPdps");
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("deleteAllPdps: Exiting");
+ }
+
+ }
+
+ /*
+ * Normally this method should only be used in a JUnit test environment.
+ * Manually deletes a PDP record in droolspdpentity table.
+ */
+ @Override
+ public void deletePdp(String pdpId) {
+ if(logger.isDebugEnabled()){
+ logger.debug("deletePdp: Entering and manually deleting pdpId={}", pdpId);
+ }
+
+ /*
+ * Start transaction
+ */
+ EntityManager em = emf.createEntityManager();
+ try {
+ em.getTransaction().begin();
+
+ /*
+ * Delete record.
+ */
+ DroolsPdpEntity droolsPdpEntity = em.find(DroolsPdpEntity.class, pdpId);
+ if (droolsPdpEntity != null) {
+ if(logger.isDebugEnabled()){
+ logger.debug("deletePdp: Removing PDP");
+ }
+ em.remove(droolsPdpEntity);
+ } else {
+ if(logger.isDebugEnabled()){
+ logger.debug("deletePdp: PDP with ID={} not currently in DB", pdpId);
+ }
+ }
+
+ /*
+ * End transaction.
+ */
+ em.getTransaction().commit();
+ } finally {
+ cleanup(em, "deletePdp");
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("deletePdp: Exiting");
+ }
+
+ }
+
+ /*
+ * Close the specified EntityManager, rolling back any pending transaction
+ *
+ * @param em the EntityManager to close ('null' is OK)
+ * @param method the invoking Java method (used for log messages)
+ */
+ private static void cleanup(EntityManager em, String method)
+ {
+ if (em != null) {
+ if (em.isOpen()) {
+ if (em.getTransaction().isActive()) {
+ // there is an active EntityTransaction -- roll it back
+ try {
+ em.getTransaction().rollback();
+ } catch (Exception e) {
+ logger.error(method + ": Caught Exception attempting to rollback EntityTransaction,", e);
+ }
+ }
+
+ // now, close the EntityManager
+ try {
+ em.close();
+ } catch (Exception e) {
+ logger.error(method + ": Caught Exception attempting to close EntityManager, ", e);
+ }
+ }
+ }
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PMStandbyStateChangeNotifier.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PMStandbyStateChangeNotifier.java
new file mode 100644
index 0000000..ce62bf8
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PMStandbyStateChangeNotifier.java
@@ -0,0 +1,345 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+/*
+ * Per MultiSite_v1-10.ppt:
+ *
+ * Extends the StateChangeNotifier class and overwrites the abstract handleStateChange() method to get state changes
+ * and do the following:
+ *
+ * When the Standby Status changes (from providingservice) to hotstandby or coldstandby,
+ * the Active/Standby selection algorithm must stand down if the PDP-D is currently the lead/active node
+ * and allow another PDP-D to take over. It must also call lock on all engines in the engine management.
+ *
+ * When the Standby Status changes from (hotstandby) to coldstandby, the Active/Standby algorithm must NOT assume
+ * the active/lead role.
+ *
+ * When the Standby Status changes (from coldstandby or providingservice) to hotstandby,
+ * the Active/Standby algorithm may assume the active/lead role if the active/lead fails.
+ *
+ * When the Standby Status changes to providingservice (from hotstandby or coldstandby) call unlock on all
+ * engines in the engine management layer.
+ */
+import java.util.Date;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import org.onap.policy.common.im.StateChangeNotifier;
+import org.onap.policy.common.im.StateManagement;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.onap.policy.drools.system.PolicyEngine;
+
+/*
+ * Some background:
+ *
+ * Originally, there was a "StandbyStateChangeNotifier" that belonged to policy-core, and this class's handleStateChange() method
+ * used to take care of invoking conn.standDownPdp(). But testing revealed that when a state change to hot standby occurred
+ * from a demote() operation, first the PMStandbyStateChangeNotifier.handleStateChange() method would be invoked and then the
+ * StandbyStateChangeNotifier.handleStateChange() method would be invoked, and this ordering was creating the following problem:
+ *
+ * When PMStandbyStateChangeNotifier.handleStateChange() was invoked it would take a long time to finish, because it would result
+ * in SingleThreadedUebTopicSource.stop() being invoked, which can potentially do a 5 second sleep for each controller being stopped.
+ * Meanwhile, as these controller stoppages and their associated sleeps were occurring, the election handler would discover the
+ * demoted PDP in hotstandby (but still designated!) and promote it, resulting in the standbyStatus going from hotstandby
+ * to providingservice. So then, by the time that PMStandbyStateChangeNotifier.handleStateChange() finished its work and
+ * StandbyStateChangeNotifier.handleStateChange() started executing, the standbyStatus was no longer hotstandby (as effected by
+ * the demote), but providingservice (as reset by the election handling logic) and conn.standDownPdp() would not get called!
+ *
+ * To fix this bug, we consolidated StandbyStateChangeNotifier and PMStandbyStateChangeNotifier, with the standDownPdp() always
+ * being invoked prior to the TopicEndpoint.manager.lock(). In this way, when the election handling logic is invoked
+ * during the controller stoppages, the PDP is in hotstandby and the standdown occurs.
+ *
+ */
+public class PMStandbyStateChangeNotifier extends StateChangeNotifier {
+ // get an instance of logger
+ private static final Logger logger = LoggerFactory.getLogger(PMStandbyStateChangeNotifier.class);
+ private Timer delayActivateTimer;
+ private int pdpUpdateInterval;
+ private boolean isWaitingForActivation;
+ private long startTimeWaitingForActivationMs;
+ private long waitInterval;
+ private boolean isNowActivating;
+ private String previousStandbyStatus;
+ public static String NONE = "none";
+ public static String UNSUPPORTED = "unsupported";
+ public static String HOTSTANDBY_OR_COLDSTANDBY = "hotstandby_or_coldstandby";
+
+ public PMStandbyStateChangeNotifier(){
+ pdpUpdateInterval = Integer.parseInt(ActiveStandbyProperties.getProperty(ActiveStandbyProperties.PDP_UPDATE_INTERVAL));
+ isWaitingForActivation = false;
+ startTimeWaitingForActivationMs = new Date().getTime();
+ //delay the activate so the DesignatedWaiter can run twice - give it an extra 2 seconds
+ waitInterval = 2*pdpUpdateInterval + 2000;
+ isNowActivating=false;
+ previousStandbyStatus = PMStandbyStateChangeNotifier.NONE;
+ }
+
+ @Override
+ public void handleStateChange() {
+ /*
+ * A note on synchronization: This method is not synchronized because the caller, stateManagememt,
+ * has synchronize all of its methods. Only one stateManagement operation can occur at a time. Thus,
+ * only one handleStateChange() call will ever be made at a time.
+ */
+ if(logger.isInfoEnabled()){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: Entering, message={}, standbyStatus={}",
+ super.getMessage(), super.getStateManagement().getStandbyStatus());
+ }
+ }
+ String standbyStatus = super.getStateManagement().getStandbyStatus();
+ String pdpId = ActiveStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: previousStandbyStatus = {}"
+ + "; standbyStatus = {}", previousStandbyStatus, standbyStatus);
+ }
+
+ if (standbyStatus == null || standbyStatus.equals(StateManagement.NULL_VALUE)) {
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: standbyStatus is null; standing down PDP={}", pdpId);
+ }
+ if(previousStandbyStatus.equals(StateManagement.NULL_VALUE)){
+ //We were just here and did this successfully
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: Is returning because standbyStatus is null and was previously 'null'; PDP={}", pdpId);
+ }
+ return;
+ }
+ isWaitingForActivation = false;
+ try{
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: null: cancelling delayActivationTimer.");
+ }
+ delayActivateTimer.cancel();
+ }catch(Exception e){
+ if(logger.isInfoEnabled()){
+ logger.info("handleStateChange: null no delayActivationTimer existed.", e);
+ }
+ //If you end of here, there was no active timer
+ }
+ //Only want to lock the endpoints, not the controllers.
+ PolicyEngine.manager.deactivate();
+ //The operation was fully successful, but you cannot assign it a real null value
+ //because later we might try to execute previousStandbyStatus.equals() and get
+ //a null pointer exception.
+ previousStandbyStatus = StateManagement.NULL_VALUE;
+ }catch(Exception e){
+ logger.warn("handleStateChange: standbyStatus == null caught exception: ", e);
+ }
+ } else if (standbyStatus.equals(StateManagement.HOT_STANDBY) || standbyStatus.equals(StateManagement.COLD_STANDBY)) {
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
+ }
+ if(previousStandbyStatus.equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY)){
+ //We were just here and did this successfully
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: Is returning because standbyStatus is {}"
+ + " and was previously {}; PDP= {}", standbyStatus, previousStandbyStatus, pdpId);
+ }
+ return;
+ }
+ isWaitingForActivation = false;
+ try{
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: HOT_STNDBY || COLD_STANDBY: cancelling delayActivationTimer.");
+ }
+ delayActivateTimer.cancel();
+ }catch(Exception e){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: HOT_STANDBY || COLD_STANDBY no delayActivationTimer existed.", e);
+ }
+ //If you end of here, there was no active timer
+ }
+ //Only want to lock the endpoints, not the controllers.
+ PolicyEngine.manager.deactivate();
+ //The operation was fully successful
+ previousStandbyStatus = PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY;
+ }catch(Exception e){
+ logger.warn("handleStateChange: standbyStatus = {} caught exception: {}", standbyStatus, e.getMessage(), e);
+ }
+
+ } else if (standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: standbyStatus= {} "
+ + "scheduling activation of PDP={}",standbyStatus, pdpId);
+ }
+ if(previousStandbyStatus.equals(StateManagement.PROVIDING_SERVICE)){
+ //We were just here and did this successfully
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: Is returning because standbyStatus is {}"
+ + "and was previously {}; PDP={}", standbyStatus, previousStandbyStatus, pdpId);
+ }
+ return;
+ }
+ try{
+ //UnLock all the endpoints
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: standbyStatus={}; controllers must be unlocked.",standbyStatus );
+ }
+ /*
+ * Only endpoints should be unlocked. Controllers have not been locked.
+ * Because, sometimes, it is possible for more than one PDP-D to become active (race conditions)
+ * we need to delay the activation of the topic endpoint interfaces to give the election algorithm
+ * time to resolve the conflict.
+ */
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE isWaitingForActivation= {}", isWaitingForActivation);
+ }
+
+ //Delay activation for 2*pdpUpdateInterval+2000 ms in case of an election handler conflict.
+ //You could have multiple election handlers thinking they can take over.
+
+ // First let's check that the timer has not died
+ if(isWaitingForActivation){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE isWaitingForActivation = {}", isWaitingForActivation);
+ }
+ long now = new Date().getTime();
+ long waitTimeMs = now - startTimeWaitingForActivationMs;
+ if(waitTimeMs > 3*waitInterval){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE looks like the activation wait timer may be hung,"
+ + " waitTimeMs = {} and allowable waitInterval = {}"
+ + " Checking whether it is currently in activation. isNowActivating = {}",
+ waitTimeMs, waitInterval, isNowActivating);
+ }
+ //Now check that it is not currently executing an activation
+ if(!isNowActivating){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE looks like the activation wait timer died");
+ }
+ // This will assure the timer is cancelled and rescheduled.
+ isWaitingForActivation = false;
+ }
+ }
+
+ }
+
+ if(!isWaitingForActivation){
+ try{
+ //Just in case there is an old timer hanging around
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE cancelling delayActivationTimer.");
+ }
+ delayActivateTimer.cancel();
+ }catch(Exception e){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE no delayActivationTimer existed.");
+ }
+ //If you end of here, there was no active timer
+ }
+ delayActivateTimer = new Timer();
+ //delay the activate so the DesignatedWaiter can run twice
+ delayActivateTimer.schedule(new DelayActivateClass(), waitInterval);
+ isWaitingForActivation = true;
+ startTimeWaitingForActivationMs = new Date().getTime();
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE scheduling delayActivationTimer in {} ms", waitInterval);
+ }
+ }else{
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: PROVIDING_SERVICE delayActivationTimer is waiting for activation.");
+ }
+ }
+
+ }catch(Exception e){
+ logger.warn("handleStateChange: PROVIDING_SERVICE standbyStatus == providingservice caught exception: ", e);
+ }
+
+ } else {
+ logger.error("handleStateChange: Unsupported standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
+ if(previousStandbyStatus.equals(PMStandbyStateChangeNotifier.UNSUPPORTED)){
+ //We were just here and did this successfully
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: Is returning because standbyStatus is "
+ + "UNSUPPORTED and was previously {}; PDP={}", previousStandbyStatus, pdpId);
+ }
+ return;
+ }
+ //Only want to lock the endpoints, not the controllers.
+ isWaitingForActivation = false;
+ try{
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: unsupported standbystatus: cancelling delayActivationTimer.");
+ }
+ delayActivateTimer.cancel();
+ }catch(Exception e){
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: unsupported standbystatus: no delayActivationTimer existed.", e);
+ }
+ //If you end of here, there was no active timer
+ }
+ PolicyEngine.manager.deactivate();
+ //We know the standbystatus is unsupported
+ previousStandbyStatus = PMStandbyStateChangeNotifier.UNSUPPORTED;
+ }catch(Exception e){
+ logger.warn("handleStateChange: Unsupported standbyStatus = {} "
+ + "caught exception: {} ",standbyStatus, e.getMessage(), e);
+ }
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("handleStateChange: Exiting");
+ }
+ }
+
+ private class DelayActivateClass extends TimerTask{
+
+ private Object delayActivateLock = new Object();
+
+
+ @Override
+ public void run() {
+ isNowActivating = true;
+ try{
+ if(logger.isDebugEnabled()){
+ logger.debug("DelayActivateClass.run: entry");
+ }
+ synchronized(delayActivateLock){
+ PolicyEngine.manager.activate();
+ // The state change fully succeeded
+ previousStandbyStatus = StateManagement.PROVIDING_SERVICE;
+ // We want to set this to false here because the activate call can take a while
+ isWaitingForActivation = false;
+ isNowActivating = false;
+ }
+ if(logger.isDebugEnabled()){
+ logger.debug("DelayActivateClass.run.exit");
+ }
+ }catch(Exception e){
+ isWaitingForActivation = false;
+ isNowActivating = false;
+ logger.warn("DelayActivateClass.run: caught an unexpected exception "
+ + "calling PolicyEngine.manager.activate: ", e);
+ }
+ }
+ }
+
+ public String getPreviousStandbyStatus(){
+ return previousStandbyStatus;
+ }
+}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java
new file mode 100644
index 0000000..db848eb
--- /dev/null
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java
@@ -0,0 +1,26 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.activestandby;
+
+public interface ThreadRunningChecker {
+ public void checkThreadStatus();
+
+}
diff --git a/feature-active-standby-management/src/main/resources/META-INF/persistence.xml b/feature-active-standby-management/src/main/resources/META-INF/persistence.xml
new file mode 100644
index 0000000..4a625b5
--- /dev/null
+++ b/feature-active-standby-management/src/main/resources/META-INF/persistence.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ ============LICENSE_START=======================================================
+ feature-active-standby-management
+ ================================================================================
+ Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ============LICENSE_END=========================================================
+ -->
+
+<persistence version="2.1"
+ xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
+ <persistence-unit name="activeStandbyPU" transaction-type="RESOURCE_LOCAL">
+ <!-- This is for database access by non-drools methods -->
+ <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+ <class>org.onap.policy.drools.activestandby.DroolsPdpEntity</class>
+ <properties>
+ <!-- Properties are passed in -->
+ </properties>
+ </persistence-unit>
+</persistence>
diff --git a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureAPI b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureAPI
new file mode 100644
index 0000000..5296f8b
--- /dev/null
+++ b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureAPI
@@ -0,0 +1 @@
+org.onap.policy.drools.activestandby.ActiveStandbyFeature
diff --git a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureAPI b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureAPI
new file mode 100644
index 0000000..5296f8b
--- /dev/null
+++ b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureAPI
@@ -0,0 +1 @@
+org.onap.policy.drools.activestandby.ActiveStandbyFeature
diff --git a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureAPI b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureAPI
new file mode 100644
index 0000000..5296f8b
--- /dev/null
+++ b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureAPI
@@ -0,0 +1 @@
+org.onap.policy.drools.activestandby.ActiveStandbyFeature
diff --git a/feature-active-standby-management/src/test/java/org/onap/policy/drools/controller/test/StandbyStateManagementTest.java b/feature-active-standby-management/src/test/java/org/onap/policy/drools/controller/test/StandbyStateManagementTest.java
new file mode 100644
index 0000000..a4a9796
--- /dev/null
+++ b/feature-active-standby-management/src/test/java/org/onap/policy/drools/controller/test/StandbyStateManagementTest.java
@@ -0,0 +1,1551 @@
+/*
+ * ============LICENSE_START=======================================================
+ * feature-active-standby-management
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.controller.test;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.Properties;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.EntityTransaction;
+import javax.persistence.Persistence;
+
+import org.apache.commons.lang3.time.DateUtils;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.onap.policy.common.im.AdministrativeStateException;
+import org.onap.policy.common.im.IntegrityMonitor;
+import org.onap.policy.common.im.StandbyStatusException;
+import org.onap.policy.common.im.StateManagement;
+import org.onap.policy.drools.activestandby.ActiveStandbyFeatureAPI;
+import org.onap.policy.drools.activestandby.ActiveStandbyProperties;
+import org.onap.policy.drools.activestandby.DroolsPdp;
+import org.onap.policy.drools.activestandby.DroolsPdpEntity;
+import org.onap.policy.drools.activestandby.DroolsPdpImpl;
+import org.onap.policy.drools.activestandby.DroolsPdpsConnector;
+import org.onap.policy.drools.activestandby.DroolsPdpsElectionHandler;
+import org.onap.policy.drools.activestandby.JpaDroolsPdpsConnector;
+import org.onap.policy.drools.activestandby.PMStandbyStateChangeNotifier;
+import org.onap.policy.drools.core.PolicySessionFeatureAPI;
+import org.onap.policy.drools.statemanagement.StateManagementFeatureAPI;
+
+/*
+ * All JUnits are designed to run in the local development environment
+ * where they have write privileges and can execute time-sensitive
+ * tasks.
+ *
+ * These tests can be run as JUnits, but there is some issue with running them
+ * as part of a "mvn install" build. Also, they take a very long time to run
+ * due to many real time breaks. Consequently, they are marked as @Ignore and
+ * only run from the desktop.
+ */
+
+public class StandbyStateManagementTest {
+ private static final Logger logger = LoggerFactory.getLogger(StandbyStateManagementTest.class);
+ /*
+ * Currently, the DroolsPdpsElectionHandler.DesignationWaiter is invoked every ten seconds, starting
+ * at ten seconds after the minute boundary (e.g. 13:05:10). So, an 80 second sleep should be
+ * sufficient to ensure that we wait for the DesignationWaiter to do its job, before
+ * checking the results.
+ */
+
+ long sleepTime = 80000;
+
+ /*
+ * DroolsPdpsElectionHandler runs every ten seconds, so a 15 second sleep should be
+ * plenty to ensure it has time to re-promote this PDP.
+ */
+
+ long electionWaitSleepTime = 15000;
+
+ /*
+ * Sleep 5 seconds after each test to allow interrupt (shutdown) recovery.
+ */
+
+ long interruptRecoveryTime = 5000;
+
+ private static EntityManagerFactory emfx;
+ private static EntityManagerFactory emfd;
+ private static EntityManager emx;
+ private static EntityManager emd;
+ private static EntityTransaction et;
+
+ private final String configDir = "src/test/resources";
+
+ /*
+ * See the IntegrityMonitor.getJmxUrl() method for the rationale behind this jmx related processing.
+ */
+
+ @BeforeClass
+ public static void setUpClass() throws Exception {
+
+ String userDir = System.getProperty("user.dir");
+ logger.debug("setUpClass: userDir={}", userDir);
+ System.setProperty("com.sun.management.jmxremote.port", "9980");
+ System.setProperty("com.sun.management.jmxremote.authenticate","false");
+
+ }
+
+ @AfterClass
+ public static void tearDownClass() throws Exception {
+ }
+
+ @Before
+ public void setUp() throws Exception {
+ //Create teh data access for xaml db
+ Properties stateManagementProperties = new Properties();
+ stateManagementProperties.load(new FileInputStream(new File(
+ "src/test/resources/feature-state-management.properties")));
+
+ emfx = Persistence.createEntityManagerFactory("junitXacmlPU", stateManagementProperties);
+
+ // Create an entity manager to use the DB
+ emx = emfx.createEntityManager();
+
+ //Create the data access for drools db
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ "src/test/resources/feature-active-standby-management.properties")));
+
+ emfd = Persistence.createEntityManagerFactory("junitDroolsPU", activeStandbyProperties);
+
+ // Create an entity manager to use the DB
+ emd = emfd.createEntityManager();
+ }
+
+ @After
+ public void tearDown() throws Exception {
+
+ }
+
+ public void cleanXacmlDb(){
+ et = emx.getTransaction();
+
+ et.begin();
+ // Make sure we leave the DB clean
+ emx.createQuery("DELETE FROM StateManagementEntity").executeUpdate();
+ emx.createQuery("DELETE FROM ResourceRegistrationEntity").executeUpdate();
+ emx.createQuery("DELETE FROM ForwardProgressEntity").executeUpdate();
+ emx.flush();
+ et.commit();
+ }
+
+ public void cleanDroolsDb(){
+ et = emd.getTransaction();
+
+ et.begin();
+ // Make sure we leave the DB clean
+ emd.createQuery("DELETE FROM DroolsPdpEntity").executeUpdate();
+ emd.flush();
+ et.commit();
+ }
+
+ /*
+ * These JUnit tests must be run one at a time in an eclipse environment
+ * by right-clicking StandbyStateManagementTest and selecting
+ * "Run As" -> "JUnit Test".
+ *
+ * They will run successfully when you run all of them under runAllTests(),
+ * however, you will get all sorts of non-fatal errors in the log and on the
+ * console that result from overlapping threads that are not terminated at the
+ * end of each test. The problem is that the JUnit environment does not terminate
+ * all the test threads between tests. This is true even if you break each JUnit
+ * into a separate file. Consequently, all the tests would have to be refactored
+ * so all test object initializations are coordinated. In other words, you
+ * retrieve the ActiveStandbyFeature instance and other class instances only once
+ * at the beginning of the JUnits and then reuse them throughout the tests.
+ * Initialization of the state of the objects is pretty straight forward as it
+ * just amounts to manipulating the entries in StateManagementEntity and
+ * DroolsPdpEntity tables. However, some thought needs to be given to how to
+ * "pause" the processing in ActiveStandbyFeature class. I think we could "pause"
+ * it by calling globalInit() which will, I think, restart it. So long as it
+ * does not create a new instance, it will force it to go through an initialization
+ * cycle which includes a "pause" at the beginning of proecessing. We just must
+ * be sure it does not create another instance - which may mean we need to add
+ * a factory interface instead of calling the constructor directly.
+ */
+
+
+ //@Ignore
+ @Test
+ public void runAllTests() throws Exception {
+ testColdStandby();
+ testHotStandby1();
+ testHotStandby2();
+ testLocking1();
+ testLocking2();
+ testPMStandbyStateChangeNotifier();
+ testSanitizeDesignatedList();
+ testComputeMostRecentPrimary();
+ testComputeDesignatedPdp();
+ }
+
+ //@Ignore
+ //@Test
+ public void testPMStandbyStateChangeNotifier() throws Exception {
+ logger.debug("\n\ntestPMStandbyStateChangeNotifier: Entering\n\n");
+ cleanXacmlDb();
+
+ logger.debug("testPMStandbyStateChangeNotifier: Reading activeStandbyProperties");
+
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ ActiveStandbyProperties.initProperties(activeStandbyProperties);
+ String thisPdpId = ActiveStandbyProperties.getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testPMStandbyStateChangeNotifier: Getting StateManagementFeatureAPI");
+
+ StateManagementFeatureAPI sm = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ sm = feature;
+ logger.debug("testPMStandbyStateChangeNotifier stateManagementFeature.getResourceName(): {}", sm.getResourceName());
+ break;
+ }
+ if(sm == null){
+ logger.error("testPMStandbyStateChangeNotifier failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testPMStandbyStateChangeNotifier failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ //Create an instance of the Observer
+ PMStandbyStateChangeNotifier pmNotifier = new PMStandbyStateChangeNotifier();
+
+ //Register the PMStandbyStateChangeNotifier Observer
+ sm.addObserver(pmNotifier);
+
+ //At this point the standbystatus = 'null'
+ sm.lock();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(StateManagement.NULL_VALUE));
+
+ sm.unlock();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(StateManagement.NULL_VALUE));
+
+ //Adding standbystatus=hotstandby
+ sm.demote();
+ System.out.println(pmNotifier.getPreviousStandbyStatus());
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+
+ //Now making standbystatus=coldstandby
+ sm.lock();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+
+ //standbystatus = hotstandby
+ sm.unlock();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+
+ //standbystatus = providingservice
+ sm.promote();
+ //The previousStandbyStatus is not updated until after the delay activation expires
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+
+ //Sleep long enough for the delayActivationTimer to run
+ Thread.sleep(5000);
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(StateManagement.PROVIDING_SERVICE));
+
+ //standbystatus = providingservice
+ sm.promote();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(StateManagement.PROVIDING_SERVICE));
+
+ //standbystatus = coldstandby
+ sm.lock();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+
+ //standbystatus = hotstandby
+ sm.unlock();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+
+ //standbystatus = hotstandby
+ sm.demote();
+ assertTrue(pmNotifier.getPreviousStandbyStatus().equals(PMStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY));
+ }
+
+ //@Ignore
+ //@Test
+ public void testSanitizeDesignatedList() throws Exception {
+
+ logger.debug("\n\ntestSanitizeDesignatedList: Entering\n\n");
+
+ // Get a DroolsPdpsConnector
+
+ logger.debug("testSanitizeDesignatedList: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testSanitizeDesignatedList: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector droolsPdpsConnector = new JpaDroolsPdpsConnector(emfDrools);
+
+ // Create 4 pdpd all not designated
+
+ DroolsPdp pdp1 = new DroolsPdpImpl("pdp1", false, 4, new Date());
+ DroolsPdp pdp2 = new DroolsPdpImpl("pdp2", false, 4, new Date());
+ DroolsPdp pdp3 = new DroolsPdpImpl("pdp3", false, 4, new Date());
+ DroolsPdp pdp4 = new DroolsPdpImpl("pdp4", false, 4, new Date());
+
+ ArrayList<DroolsPdp> listOfDesignated = new ArrayList<DroolsPdp>();
+ listOfDesignated.add(pdp1);
+ listOfDesignated.add(pdp2);
+ listOfDesignated.add(pdp3);
+ listOfDesignated.add(pdp4);
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI stateManagementFeature = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ stateManagementFeature = feature;
+ logger.debug("testColdStandby stateManagementFeature.getResourceName(): {}", stateManagementFeature.getResourceName());
+ break;
+ }
+ if(stateManagementFeature == null){
+ logger.error("testColdStandby failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testColdStandby failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+
+ DroolsPdpsElectionHandler droolsPdpsElectionHandler = new DroolsPdpsElectionHandler(droolsPdpsConnector, pdp1);
+
+ listOfDesignated = droolsPdpsElectionHandler.santizeDesignatedList(listOfDesignated);
+
+ logger.debug("\n\ntestSanitizeDesignatedList: listOfDesignated.size = {}\n\n",listOfDesignated.size());
+
+ assertTrue(listOfDesignated.size()==4);
+
+ // Now make 2 designated
+
+ pdp1.setDesignated(true);
+ pdp2.setDesignated(true);
+
+ listOfDesignated = droolsPdpsElectionHandler.santizeDesignatedList(listOfDesignated);
+
+ logger.debug("\n\ntestSanitizeDesignatedList: listOfDesignated.size after 2 designated = {}\n\n", listOfDesignated.size());
+
+ assertTrue(listOfDesignated.size()==2);
+ assertTrue(listOfDesignated.contains(pdp1));
+ assertTrue(listOfDesignated.contains(pdp2));
+
+
+ // Now all are designated. But, we have to add back the previously non-designated nodes
+
+ pdp3.setDesignated(true);
+ pdp4.setDesignated(true);
+ listOfDesignated.add(pdp3);
+ listOfDesignated.add(pdp4);
+
+ listOfDesignated = droolsPdpsElectionHandler.santizeDesignatedList(listOfDesignated);
+
+ logger.debug("\n\ntestSanitizeDesignatedList: listOfDesignated.size after all designated = {}\n\n", listOfDesignated.size());
+
+ assertTrue(listOfDesignated.size()==4);
+
+ }
+
+
+ //@Ignore
+ //@Test
+ public void testComputeMostRecentPrimary() throws Exception {
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: Entering\n\n");
+
+ logger.debug("testComputeMostRecentPrimary: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testComputeMostRecentPrimary: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector droolsPdpsConnector = new JpaDroolsPdpsConnector(emfDrools);
+
+
+ // Create 4 pdpd all not designated
+
+
+ long designatedDateMS = new Date().getTime();
+ DroolsPdp pdp1 = new DroolsPdpImpl("pdp1", false, 4, new Date());
+ pdp1.setDesignatedDate(new Date(designatedDateMS - 2));
+
+ DroolsPdp pdp2 = new DroolsPdpImpl("pdp2", false, 4, new Date());
+ //oldest
+ pdp2.setDesignatedDate(new Date(designatedDateMS - 3));
+
+ DroolsPdp pdp3 = new DroolsPdpImpl("pdp3", false, 4, new Date());
+ pdp3.setDesignatedDate(new Date(designatedDateMS - 1));
+
+ DroolsPdp pdp4 = new DroolsPdpImpl("pdp4", false, 4, new Date());
+ //most recent
+ pdp4.setDesignatedDate(new Date(designatedDateMS));
+
+ ArrayList<DroolsPdp> listOfAllPdps = new ArrayList<DroolsPdp>();
+ listOfAllPdps.add(pdp1);
+ listOfAllPdps.add(pdp2);
+ listOfAllPdps.add(pdp3);
+ listOfAllPdps.add(pdp4);
+
+
+ ArrayList<DroolsPdp> listOfDesignated = new ArrayList<DroolsPdp>();
+ listOfDesignated.add(pdp1);
+ listOfDesignated.add(pdp2);
+ listOfDesignated.add(pdp3);
+ listOfDesignated.add(pdp4);
+
+ // Because the way we sanitize the listOfDesignated, it will always contain all hot standby
+ // or all designated members.
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI stateManagementFeature = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ stateManagementFeature = feature;
+ logger.debug("testComputeMostRecentPrimary stateManagementFeature.getResourceName(): {}", stateManagementFeature.getResourceName());
+ break;
+ }
+ if(stateManagementFeature == null){
+ logger.error("testComputeMostRecentPrimary failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testComputeMostRecentPrimary failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ DroolsPdpsElectionHandler droolsPdpsElectionHandler = new DroolsPdpsElectionHandler(droolsPdpsConnector, pdp1);
+
+ DroolsPdp mostRecentPrimary = droolsPdpsElectionHandler.computeMostRecentPrimary(listOfAllPdps, listOfDesignated);
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: mostRecentPrimary.getPdpId() = {}\n\n", mostRecentPrimary.getPdpId());
+
+
+ // If all of the pdps are included in the listOfDesignated and none are designated, it will choose
+ // the one which has the most recent designated date.
+
+
+ assertTrue(mostRecentPrimary.getPdpId().equals("pdp4"));
+
+
+ // Now let's designate all of those on the listOfDesignated. It will choose the first one designated
+
+
+ pdp1.setDesignated(true);
+ pdp2.setDesignated(true);
+ pdp3.setDesignated(true);
+ pdp4.setDesignated(true);
+
+ mostRecentPrimary = droolsPdpsElectionHandler.computeMostRecentPrimary(listOfAllPdps, listOfDesignated);
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: All designated all on list, mostRecentPrimary.getPdpId() = {}\n\n", mostRecentPrimary.getPdpId());
+
+
+ // If all of the pdps are included in the listOfDesignated and all are designated, it will choose
+ // the one which was designated first
+
+
+ assertTrue(mostRecentPrimary.getPdpId().equals("pdp2"));
+
+
+ // Now we will designate only 2 and put just them in the listOfDesignated. The algorithm will now
+ // look for the most recently designated pdp which is not currently designated.
+
+
+ pdp3.setDesignated(false);
+ pdp4.setDesignated(false);
+
+ listOfDesignated.remove(pdp3);
+ listOfDesignated.remove(pdp4);
+
+ mostRecentPrimary = droolsPdpsElectionHandler.computeMostRecentPrimary(listOfAllPdps, listOfDesignated);
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: mostRecentPrimary.getPdpId() = {}\n\n", mostRecentPrimary.getPdpId());
+
+ assertTrue(mostRecentPrimary.getPdpId().equals("pdp4"));
+
+
+
+ // Now we will have none designated and put two of them in the listOfDesignated. The algorithm will now
+ // look for the most recently designated pdp regardless of whether it is currently marked as designated.
+
+
+ pdp1.setDesignated(false);
+ pdp2.setDesignated(false);
+
+ mostRecentPrimary = droolsPdpsElectionHandler.computeMostRecentPrimary(listOfAllPdps, listOfDesignated);
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: 2 on list mostRecentPrimary.getPdpId() = {}\n\n", mostRecentPrimary.getPdpId());
+
+ assertTrue(mostRecentPrimary.getPdpId().equals("pdp4"));
+
+
+ // If we have only one pdp on in the listOfDesignated, the most recently designated pdp will be chosen, regardless
+ // of its designation status
+
+
+ listOfDesignated.remove(pdp1);
+
+ mostRecentPrimary = droolsPdpsElectionHandler.computeMostRecentPrimary(listOfAllPdps, listOfDesignated);
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: 1 on list mostRecentPrimary.getPdpId() = {}\n\n", mostRecentPrimary.getPdpId());
+
+ assertTrue(mostRecentPrimary.getPdpId().equals("pdp4"));
+
+
+ // Finally, if none are on the listOfDesignated, it will again choose the most recently designated pdp.
+
+
+ listOfDesignated.remove(pdp2);
+
+ mostRecentPrimary = droolsPdpsElectionHandler.computeMostRecentPrimary(listOfAllPdps, listOfDesignated);
+
+ logger.debug("\n\ntestComputeMostRecentPrimary: 0 on list mostRecentPrimary.getPdpId() = {}\n\n", mostRecentPrimary.getPdpId());
+
+ assertTrue(mostRecentPrimary.getPdpId().equals("pdp4"));
+
+ }
+
+ //@Ignore
+ //@Test
+ public void testComputeDesignatedPdp() throws Exception{
+
+ logger.debug("\n\ntestComputeDesignatedPdp: Entering\n\n");
+
+ logger.debug("testComputeDesignatedPdp: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+
+ logger.debug("testComputeDesignatedPdp: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector droolsPdpsConnector = new JpaDroolsPdpsConnector(emfDrools);
+
+
+ // Create 4 pdpd all not designated. Two on site1. Two on site2
+
+
+ long designatedDateMS = new Date().getTime();
+ DroolsPdp pdp1 = new DroolsPdpImpl("pdp1", false, 4, new Date());
+ pdp1.setDesignatedDate(new Date(designatedDateMS - 2));
+ pdp1.setSiteName("site1");
+
+ DroolsPdp pdp2 = new DroolsPdpImpl("pdp2", false, 4, new Date());
+ pdp2.setDesignatedDate(new Date(designatedDateMS - 3));
+ pdp2.setSiteName("site1");
+
+ //oldest
+ DroolsPdp pdp3 = new DroolsPdpImpl("pdp3", false, 4, new Date());
+ pdp3.setDesignatedDate(new Date(designatedDateMS - 4));
+ pdp3.setSiteName("site2");
+
+ DroolsPdp pdp4 = new DroolsPdpImpl("pdp4", false, 4, new Date());
+ //most recent
+ pdp4.setDesignatedDate(new Date(designatedDateMS));
+ pdp4.setSiteName("site2");
+
+ ArrayList<DroolsPdp> listOfAllPdps = new ArrayList<DroolsPdp>();
+ listOfAllPdps.add(pdp1);
+ listOfAllPdps.add(pdp2);
+ listOfAllPdps.add(pdp3);
+ listOfAllPdps.add(pdp4);
+
+
+ ArrayList<DroolsPdp> listOfDesignated = new ArrayList<DroolsPdp>();
+
+
+ // We will first test an empty listOfDesignated. As we know from the previous JUnit,
+ // the pdp with the most designated date will be chosen for mostRecentPrimary
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI stateManagementFeature = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ stateManagementFeature = feature;
+ logger.debug("testComputeDesignatedPdp stateManagementFeature.getResourceName(): {}", stateManagementFeature.getResourceName());
+ break;
+ }
+ if(stateManagementFeature == null){
+ logger.error("testComputeDesignatedPdp failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testComputeDesignatedPdp failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+
+ DroolsPdpsElectionHandler droolsPdpsElectionHandler = new DroolsPdpsElectionHandler(droolsPdpsConnector, pdp1);
+
+ DroolsPdp mostRecentPrimary = pdp4;
+
+ DroolsPdp designatedPdp = droolsPdpsElectionHandler.computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
+
+
+ // The designatedPdp should be null
+
+ assertTrue(designatedPdp==null);
+
+
+ // Now let's try having only one pdp in listOfDesignated, but not in the same site as the most recent primary
+
+ listOfDesignated.add(pdp2);
+
+ designatedPdp = droolsPdpsElectionHandler.computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
+
+
+ // Now the designatedPdp should be the one and only selection in the listOfDesignated
+
+
+ assertTrue(designatedPdp.getPdpId().equals(pdp2.getPdpId()));
+
+
+ // Now let's put 2 pdps in the listOfDesignated, neither in the same site as the mostRecentPrimary
+
+
+ listOfDesignated.add(pdp1);
+
+ designatedPdp = droolsPdpsElectionHandler.computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
+
+
+ // The designatedPdp should now be the one with the lowest lexiographic score - pdp1
+
+
+ assertTrue(designatedPdp.getPdpId().equals(pdp1.getPdpId()));
+
+
+ // Finally, we will have 2 pdps in the listOfDesignated, one in the same site with the mostRecentPrimary
+
+
+ listOfDesignated.remove(pdp1);
+ listOfDesignated.add(pdp3);
+
+ designatedPdp = droolsPdpsElectionHandler.computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
+
+
+ // The designatedPdp should now be the one on the same site as the mostRecentPrimary
+
+
+ assertTrue(designatedPdp.getPdpId().equals(pdp3.getPdpId()));
+ }
+
+ //@Ignore
+ //@Test
+ public void testColdStandby() throws Exception {
+
+ logger.debug("\n\ntestColdStandby: Entering\n\n");
+ cleanXacmlDb();
+ cleanDroolsDb();
+
+ logger.debug("testColdStandby: Reading stateManagementProperties");
+ Properties stateManagementProperties = new Properties();
+ stateManagementProperties.load(new FileInputStream(new File(
+ configDir + "/feature-state-management.properties")));
+
+ logger.debug("testColdStandby: Creating emfXacml");
+ EntityManagerFactory emfXacml = Persistence.createEntityManagerFactory(
+ "junitXacmlPU", stateManagementProperties);
+
+ logger.debug("testColdStandby: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties.getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testColdStandby: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector conn = new JpaDroolsPdpsConnector(emfDrools);
+
+ logger.debug("testColdStandby: Cleaning up tables");
+ conn.deleteAllPdps();
+
+ logger.debug("testColdStandby: Inserting PDP={} as designated", thisPdpId);
+ DroolsPdp pdp = new DroolsPdpImpl(thisPdpId, true, 4, new Date());
+ conn.insertPdp(pdp);
+ DroolsPdpEntity droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.debug("testColdStandby: After insertion, DESIGNATED= {} "
+ + "for PDP= {}", droolsPdpEntity.isDesignated(), thisPdpId);
+ assertTrue(droolsPdpEntity.isDesignated() == true);
+
+ /*
+ * When the Standby Status changes (from providingservice) to hotstandby
+ * or coldstandby,the Active/Standby selection algorithm must stand down
+ * if thePDP-D is currently the lead/active node and allow another PDP-D
+ * to take over.
+ *
+ * It must also call lock on all engines in the engine management.
+ */
+
+
+ /*
+ * Yes, this is kludgy, but we have a chicken and egg problem here: we
+ * need a StateManagement object to invoke the
+ * deleteAllStateManagementEntities method.
+ */
+ logger.debug("testColdStandby: Instantiating stateManagement object");
+
+ StateManagement sm = new StateManagement(emfXacml, "dummy");
+ sm.deleteAllStateManagementEntities();
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI smf = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ smf = feature;
+ logger.debug("testColdStandby stateManagementFeature.getResourceName(): {}", smf.getResourceName());
+ break;
+ }
+ if(smf == null){
+ logger.error("testColdStandby failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testColdStandby failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ // Create an ActiveStandbyFeature and initialize it. It will discover the StateManagementFeature
+ // that has been created.
+ ActiveStandbyFeatureAPI activeStandbyFeature = null;
+ for (ActiveStandbyFeatureAPI feature : ActiveStandbyFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ activeStandbyFeature = feature;
+ logger.debug("testColdStandby activeStandbyFeature.getResourceName(): {}", activeStandbyFeature.getResourceName());
+ break;
+ }
+ if(activeStandbyFeature == null){
+ logger.error("testColdStandby failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID:{}", thisPdpId);
+ logger.debug("testColdStandby failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID:{}", thisPdpId);
+ }
+
+ // Artificially putting a PDP into service is really a two step process, 1)
+ // inserting it as designated and 2) promoting it so that its standbyStatus
+ // is providing service.
+
+ logger.debug("testColdStandby: Runner started; Sleeping "
+ + interruptRecoveryTime + "ms before promoting PDP= {}",
+ thisPdpId);
+ Thread.sleep(interruptRecoveryTime);
+
+ logger.debug("testColdStandby: Promoting PDP={}", thisPdpId);
+ smf.promote();
+
+ String standbyStatus = sm.getStandbyStatus(thisPdpId);
+ logger.debug("testColdStandby: Before locking, PDP= {} has standbyStatus= {}",
+ thisPdpId, standbyStatus);
+
+ logger.debug("testColdStandby: Locking smf");
+ smf.lock();
+
+ Thread.sleep(interruptRecoveryTime);
+
+ // Verify that the PDP is no longer designated.
+
+ droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.debug("testColdStandby: After lock sm.lock() invoked, "
+ + "DESIGNATED= {} for PDP={}", droolsPdpEntity.isDesignated(), thisPdpId);
+ assertTrue(droolsPdpEntity.isDesignated() == false);
+
+ logger.debug("\n\ntestColdStandby: Exiting\n\n");
+ Thread.sleep(interruptRecoveryTime);
+
+ }
+
+ // Tests hot standby when there is only one PDP.
+
+ //@Ignore
+ //@Test
+ public void testHotStandby1() throws Exception {
+
+ logger.debug("\n\ntestHotStandby1: Entering\n\n");
+ cleanXacmlDb();
+ cleanDroolsDb();
+
+ logger.debug("testHotStandby1: Reading stateManagementProperties");
+ Properties stateManagementProperties = new Properties();
+ stateManagementProperties.load(new FileInputStream(new File(
+ configDir + "/feature-state-management.properties")));
+
+ logger.debug("testHotStandby1: Creating emfXacml");
+ EntityManagerFactory emfXacml = Persistence.createEntityManagerFactory(
+ "junitXacmlPU", stateManagementProperties);
+
+ logger.debug("testHotStandby1: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testHotStandby1: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector conn = new JpaDroolsPdpsConnector(emfDrools);
+
+ logger.debug("testHotStandby1: Cleaning up tables");
+ conn.deleteAllPdps();
+
+ /*
+ * Insert this PDP as not designated. Initial standby state will be
+ * either null or cold standby. Demoting should transit state to
+ * hot standby.
+ */
+
+ logger.debug("testHotStandby1: Inserting PDP={} as not designated", thisPdpId);
+ Date yesterday = DateUtils.addDays(new Date(), -1);
+ DroolsPdpImpl pdp = new DroolsPdpImpl(thisPdpId, false, 4, yesterday);
+ conn.insertPdp(pdp);
+ DroolsPdpEntity droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.debug("testHotStandby1: After insertion, PDP={} has DESIGNATED={}",
+ thisPdpId, droolsPdpEntity.isDesignated());
+ assertTrue(droolsPdpEntity.isDesignated() == false);
+
+ logger.debug("testHotStandby1: Instantiating stateManagement object");
+ StateManagement sm = new StateManagement(emfXacml, "dummy");
+ sm.deleteAllStateManagementEntities();
+
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI smf = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ smf = feature;
+ logger.debug("testHotStandby1 stateManagementFeature.getResourceName(): {}", smf.getResourceName());
+ break;
+ }
+ if(smf == null){
+ logger.error("testHotStandby1 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testHotStandby1 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ // Create an ActiveStandbyFeature and initialize it. It will discover the StateManagementFeature
+ // that has been created.
+ ActiveStandbyFeatureAPI activeStandbyFeature = null;
+ for (ActiveStandbyFeatureAPI feature : ActiveStandbyFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ activeStandbyFeature = feature;
+ logger.debug("testHotStandby1 activeStandbyFeature.getResourceName(): {}", activeStandbyFeature.getResourceName());
+ break;
+ }
+ if(activeStandbyFeature == null){
+ logger.error("testHotStandby1 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testHotStandby1 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+
+ logger.debug("testHotStandby1: Demoting PDP={}", thisPdpId);
+ // demoting should cause state to transit to hotstandby
+ smf.demote();
+
+
+ logger.debug("testHotStandby1: Sleeping {} ms, to allow JpaDroolsPdpsConnector "
+ + "time to check droolspdpentity table", sleepTime);
+ Thread.sleep(sleepTime);
+
+
+ // Verify that this formerly un-designated PDP in HOT_STANDBY is now designated and providing service.
+
+ droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.debug("testHotStandby1: After sm.demote() invoked, DESIGNATED= {} "
+ + "for PDP= {}", droolsPdpEntity.isDesignated(), thisPdpId);
+ assertTrue(droolsPdpEntity.isDesignated() == true);
+ String standbyStatus = smf.getStandbyStatus(thisPdpId);
+ logger.debug("testHotStandby1: After demotion, PDP= {} "
+ + "has standbyStatus= {}", thisPdpId, standbyStatus);
+ assertTrue(standbyStatus != null && standbyStatus.equals(StateManagement.PROVIDING_SERVICE));
+
+ logger.debug("testHotStandby1: Stopping policyManagementRunner");
+ //policyManagementRunner.stopRunner();
+
+ logger.debug("\n\ntestHotStandby1: Exiting\n\n");
+ Thread.sleep(interruptRecoveryTime);
+
+ }
+
+ /*
+ * Tests hot standby when two PDPs are involved.
+ */
+
+ //@Ignore
+ //@Test
+ public void testHotStandby2() throws Exception {
+
+ logger.info("\n\ntestHotStandby2: Entering\n\n");
+ cleanXacmlDb();
+ cleanDroolsDb();
+
+ logger.info("testHotStandby2: Reading stateManagementProperties");
+ Properties stateManagementProperties = new Properties();
+ stateManagementProperties.load(new FileInputStream(new File(
+ configDir + "/feature-state-management.properties")));
+
+ logger.info("testHotStandby2: Creating emfXacml");
+ EntityManagerFactory emfXacml = Persistence.createEntityManagerFactory(
+ "junitXacmlPU", stateManagementProperties);
+
+ logger.info("testHotStandby2: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.info("testHotStandby2: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector conn = new JpaDroolsPdpsConnector(emfDrools);
+
+ logger.info("testHotStandby2: Cleaning up tables");
+ conn.deleteAllPdps();
+
+
+ // Insert a PDP that's designated but not current.
+
+ String activePdpId = "pdp2";
+ logger.info("testHotStandby2: Inserting PDP={} as stale, designated PDP", activePdpId);
+ Date yesterday = DateUtils.addDays(new Date(), -1);
+ DroolsPdp pdp = new DroolsPdpImpl(activePdpId, true, 4, yesterday);
+ conn.insertPdp(pdp);
+ DroolsPdpEntity droolsPdpEntity = conn.getPdp(activePdpId);
+ logger.info("testHotStandby2: After insertion, PDP= {}, which is "
+ + "not current, has DESIGNATED= {}", activePdpId, droolsPdpEntity.isDesignated());
+ assertTrue(droolsPdpEntity.isDesignated() == true);
+
+ /*
+ * Promote the designated PDP.
+ *
+ * We have a chicken and egg problem here: we need a StateManagement
+ * object to invoke the deleteAllStateManagementEntities method.
+ */
+
+
+ logger.info("testHotStandby2: Promoting PDP={}", activePdpId);
+ StateManagement sm = new StateManagement(emfXacml, "dummy");
+ sm.deleteAllStateManagementEntities();
+
+
+ sm = new StateManagement(emfXacml, activePdpId);//pdp2
+
+ // Artificially putting a PDP into service is really a two step process, 1)
+ // inserting it as designated and 2) promoting it so that its standbyStatus
+ // is providing service.
+
+ /*
+ * Insert this PDP as not designated. Initial standby state will be
+ * either null or cold standby. Demoting should transit state to
+ * hot standby.
+ */
+
+
+ logger.info("testHotStandby2: Inserting PDP= {} as not designated", thisPdpId);
+ pdp = new DroolsPdpImpl(thisPdpId, false, 4, yesterday);
+ conn.insertPdp(pdp);
+ droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.info("testHotStandby2: After insertion, PDP={} "
+ + "has DESIGNATED= {}", thisPdpId, droolsPdpEntity.isDesignated());
+ assertTrue(droolsPdpEntity.isDesignated() == false);
+
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI sm2 = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ sm2 = feature;
+ logger.debug("testHotStandby2 stateManagementFeature.getResourceName(): {}", sm2.getResourceName());
+ break;
+ }
+ if(sm2 == null){
+ logger.error("testHotStandby2 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testHotStandby2 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ // Create an ActiveStandbyFeature and initialize it. It will discover the StateManagementFeature
+ // that has been created.
+ ActiveStandbyFeatureAPI activeStandbyFeature = null;
+ for (ActiveStandbyFeatureAPI feature : ActiveStandbyFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ activeStandbyFeature = feature;
+ logger.debug("testHotStandby2 activeStandbyFeature.getResourceName(): {}", activeStandbyFeature.getResourceName());
+ break;
+ }
+ if(activeStandbyFeature == null){
+ logger.error("testHotStandby2 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testHotStandby2 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ logger.info("testHotStandby2: Runner started; Sleeping {} "
+ + "ms before promoting/demoting", interruptRecoveryTime);
+ Thread.sleep(interruptRecoveryTime);
+
+ logger.info("testHotStandby2: Runner started; promoting PDP={}", activePdpId);
+ //At this point, the newly created pdp will have set the state to disabled/failed/cold standby
+ //because it is stale. So, it cannot be promoted. We need to call sm.enableNotFailed() so we
+ //can promote it and demote the other pdp - else the other pdp will just spring back to providingservice
+ sm.enableNotFailed();//pdp2
+ sm.promote();
+ String standbyStatus = sm.getStandbyStatus(activePdpId);
+ logger.info("testHotStandby2: After promoting, PDP= {} has standbyStatus= {}", activePdpId, standbyStatus);
+
+ // demoting PDP should ensure that state transits to hotstandby
+ logger.info("testHotStandby2: Runner started; demoting PDP= {}", thisPdpId);
+ sm2.demote();//pdp1
+ standbyStatus = sm.getStandbyStatus(thisPdpId);
+ logger.info("testHotStandby2: After demoting, PDP={} has standbyStatus= {}",thisPdpId , standbyStatus);
+
+ logger.info("testHotStandby2: Sleeping {} ms, to allow JpaDroolsPdpsConnector "
+ + "time to check droolspdpentity table", sleepTime);
+ Thread.sleep(sleepTime);
+
+ /*
+ * Verify that this PDP, demoted to HOT_STANDBY, is now
+ * re-designated and providing service.
+ */
+
+ droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.info("testHotStandby2: After demoting PDP={}"
+ + ", DESIGNATED= {}"
+ + " for PDP= {}", activePdpId, droolsPdpEntity.isDesignated(), thisPdpId);
+ assertTrue(droolsPdpEntity.isDesignated() == true);
+ standbyStatus = sm2.getStandbyStatus(thisPdpId);
+ logger.info("testHotStandby2: After demoting PDP={}"
+ + ", PDP={} has standbyStatus= {}",
+ activePdpId, thisPdpId, standbyStatus);
+ assertTrue(standbyStatus != null
+ && standbyStatus.equals(StateManagement.PROVIDING_SERVICE));
+
+ logger.info("testHotStandby2: Stopping policyManagementRunner");
+ //policyManagementRunner.stopRunner();
+
+ logger.info("\n\ntestHotStandby2: Exiting\n\n");
+ Thread.sleep(interruptRecoveryTime);
+
+ }
+
+ /*
+ * 1) Inserts and designates this PDP, then verifies that startTransaction
+ * is successful.
+ *
+ * 2) Demotes PDP, and verifies that because there is only one PDP, it will
+ * be immediately re-promoted, thus allowing startTransaction to be
+ * successful.
+ *
+ * 3) Locks PDP and verifies that startTransaction results in
+ * AdministrativeStateException.
+ *
+ * 4) Unlocks PDP and verifies that startTransaction results in
+ * StandbyStatusException.
+ *
+ * 5) Promotes PDP and verifies that startTransaction is once again
+ * successful.
+ */
+
+ //@Ignore
+ //@Test
+ public void testLocking1() throws Exception {
+ logger.debug("testLocking1: Entry");
+ cleanXacmlDb();
+ cleanDroolsDb();
+
+ logger.debug("testLocking1: Reading stateManagementProperties");
+ Properties stateManagementProperties = new Properties();
+ stateManagementProperties.load(new FileInputStream(new File(
+ configDir + "/feature-state-management.properties")));
+
+ logger.debug("testLocking1: Creating emfXacml");
+ EntityManagerFactory emfXacml = Persistence.createEntityManagerFactory(
+ "junitXacmlPU", stateManagementProperties);
+
+ logger.debug("testLocking1: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testLocking1: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector conn = new JpaDroolsPdpsConnector(emfDrools);
+
+ logger.debug("testLocking1: Cleaning up tables");
+ conn.deleteAllPdps();
+
+ /*
+ * Insert this PDP as designated. Initial standby state will be
+ * either null or cold standby.
+ */
+
+ logger.debug("testLocking1: Inserting PDP= {} as designated", thisPdpId);
+ DroolsPdpImpl pdp = new DroolsPdpImpl(thisPdpId, true, 4, new Date());
+ conn.insertPdp(pdp);
+ DroolsPdpEntity droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.debug("testLocking1: After insertion, PDP= {} has DESIGNATED= {}",
+ thisPdpId, droolsPdpEntity.isDesignated());
+ assertTrue(droolsPdpEntity.isDesignated() == true);
+
+ logger.debug("testLocking1: Instantiating stateManagement object");
+ StateManagement smDummy = new StateManagement(emfXacml, "dummy");
+ smDummy.deleteAllStateManagementEntities();
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI sm = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ sm = feature;
+ logger.debug("testLocking1 stateManagementFeature.getResourceName(): {}", sm.getResourceName());
+ break;
+ }
+ if(sm == null){
+ logger.error("testLocking1 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testLocking1 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ // Create an ActiveStandbyFeature and initialize it. It will discover the StateManagementFeature
+ // that has been created.
+ ActiveStandbyFeatureAPI activeStandbyFeature = null;
+ for (ActiveStandbyFeatureAPI feature : ActiveStandbyFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ activeStandbyFeature = feature;
+ logger.debug("testLocking1 activeStandbyFeature.getResourceName(): {}", activeStandbyFeature.getResourceName());
+ break;
+ }
+ if(activeStandbyFeature == null){
+ logger.error("testLocking1 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testLocking1 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ logger.debug("testLocking1: Runner started; Sleeping "
+ + interruptRecoveryTime + "ms before promoting PDP={}",
+ thisPdpId);
+ Thread.sleep(interruptRecoveryTime);
+
+ logger.debug("testLocking1: Promoting PDP={}", thisPdpId);
+ sm.promote();
+
+ logger.debug("testLocking1: Sleeping {} ms, to allow time for "
+ + "policy-management.Main class to come up, designated= {}",
+ sleepTime, conn.getPdp(thisPdpId).isDesignated());
+ Thread.sleep(sleepTime);
+
+ logger.debug("testLocking1: Waking up and invoking startTransaction on active PDP={}"
+ + ", designated= {}",thisPdpId, conn.getPdp(thisPdpId).isDesignated());
+
+
+ IntegrityMonitor droolsPdpIntegrityMonitor = IntegrityMonitor.getInstance();
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ droolsPdpIntegrityMonitor.endTransaction();
+ logger.debug("testLocking1: As expected, transaction successful");
+ } catch (AdministrativeStateException e) {
+ logger.error("testLocking1: Unexpectedly caught AdministrativeStateException, ", e);
+ assertTrue(false);
+ } catch (StandbyStatusException e) {
+ logger.error("testLocking1: Unexpectedly caught StandbyStatusException, ", e);
+ assertTrue(false);
+ } catch (Exception e) {
+ logger.error("testLocking1: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ }
+
+ // demoting should cause state to transit to hotstandby, followed by re-promotion,
+ // since there is only one PDP.
+ logger.debug("testLocking1: demoting PDP={}", thisPdpId);
+ sm.demote();
+
+ logger.debug("testLocking1: sleeping" + electionWaitSleepTime
+ + " to allow election handler to re-promote PDP={}", thisPdpId);
+ Thread.sleep(electionWaitSleepTime);
+
+ logger.debug("testLocking1: Invoking startTransaction on re-promoted PDP={}"
+ + ", designated={}", thisPdpId, conn.getPdp(thisPdpId).isDesignated());
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ droolsPdpIntegrityMonitor.endTransaction();
+ logger.debug("testLocking1: As expected, transaction successful");
+ } catch (AdministrativeStateException e) {
+ logger.error("testLocking1: Unexpectedly caught AdministrativeStateException, ", e);
+ assertTrue(false);
+ } catch (StandbyStatusException e) {
+ logger.error("testLocking1: Unexpectedly caught StandbyStatusException, ", e);
+ assertTrue(false);
+ } catch (Exception e) {
+ logger.error("testLocking1: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ }
+
+ // locking should cause state to transit to cold standby
+ logger.debug("testLocking1: locking PDP={}", thisPdpId);
+ sm.lock();
+
+ // Just to avoid any race conditions, sleep a little after locking
+ logger.debug("testLocking1: Sleeping a few millis after locking, to avoid race condition");
+ Thread.sleep(100);
+
+ logger.debug("testLocking1: Invoking startTransaction on locked PDP= {}"
+ + ", designated= {}",thisPdpId, conn.getPdp(thisPdpId).isDesignated());
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ logger.error("testLocking1: startTransaction unexpectedly successful");
+ assertTrue(false);
+ } catch (AdministrativeStateException e) {
+ logger.debug("testLocking1: As expected, caught AdministrativeStateException, ", e);
+ } catch (StandbyStatusException e) {
+ logger.error("testLocking1: Unexpectedly caught StandbyStatusException, ", e);
+ assertTrue(false);
+ } catch (Exception e) {
+ logger.error("testLocking1: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ } finally {
+ droolsPdpIntegrityMonitor.endTransaction();
+ }
+
+ // unlocking should cause state to transit to hot standby and then providing service
+ logger.debug("testLocking1: unlocking PDP={}", thisPdpId);
+ sm.unlock();
+
+ // Just to avoid any race conditions, sleep a little after locking
+ logger.debug("testLocking1: Sleeping a few millis after unlocking, to avoid race condition");
+ Thread.sleep(electionWaitSleepTime);
+
+ logger.debug("testLocking1: Invoking startTransaction on unlocked PDP="
+ + thisPdpId
+ + ", designated="
+ + conn.getPdp(thisPdpId).isDesignated());
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ logger.error("testLocking1: startTransaction successful as expected");
+ } catch (AdministrativeStateException e) {
+ logger.error("testLocking1: Unexpectedly caught AdministrativeStateException, ", e);
+ assertTrue(false);
+ } catch (StandbyStatusException e) {
+ logger.debug("testLocking1: Unexpectedly caught StandbyStatusException, ", e);
+ assertTrue(false);
+ } catch (Exception e) {
+ logger.error("testLocking1: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ } finally {
+ droolsPdpIntegrityMonitor.endTransaction();
+ }
+
+ // demoting should cause state to transit to hot standby
+ logger.debug("testLocking1: demoting PDP={}", thisPdpId);
+ sm.demote();
+
+ // Just to avoid any race conditions, sleep a little after promoting
+ logger.debug("testLocking1: Sleeping a few millis after demoting, to avoid race condition");
+ Thread.sleep(100);
+
+ logger.debug("testLocking1: Invoking startTransaction on demoted PDP={}"
+ + ", designated={}", thisPdpId, conn.getPdp(thisPdpId).isDesignated());
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ droolsPdpIntegrityMonitor.endTransaction();
+ logger.debug("testLocking1: Unexpectedly, transaction successful");
+ assertTrue(false);
+ } catch (AdministrativeStateException e) {
+ logger.error("testLocking1: Unexpectedly caught AdministrativeStateException, ", e);
+ assertTrue(false);
+ } catch (StandbyStatusException e) {
+ logger.error("testLocking1: As expected caught StandbyStatusException, ", e);
+ } catch (Exception e) {
+ logger.error("testLocking1: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ }
+
+ logger.debug("\n\ntestLocking1: Exiting\n\n");
+ Thread.sleep(interruptRecoveryTime);
+
+ }
+
+
+ /*
+ * 1) Inserts and designates this PDP, then verifies that startTransaction
+ * is successful.
+ *
+ * 2) Inserts another PDP in hotstandby.
+ *
+ * 3) Demotes this PDP, and verifies 1) that other PDP is not promoted (because one
+ * PDP cannot promote another PDP) and 2) that this PDP is re-promoted.
+ */
+
+ //@Ignore
+ //@Test
+ public void testLocking2() throws Exception {
+
+ logger.debug("\n\ntestLocking2: Entering\n\n");
+ cleanXacmlDb();
+ cleanDroolsDb();
+
+ logger.debug("testLocking2: Reading stateManagementProperties");
+ Properties stateManagementProperties = new Properties();
+ stateManagementProperties.load(new FileInputStream(new File(
+ configDir + "/feature-state-management.properties")));
+
+ logger.debug("testLocking2: Creating emfXacml");
+ EntityManagerFactory emfXacml = Persistence.createEntityManagerFactory(
+ "junitXacmlPU", stateManagementProperties);
+
+ logger.debug("testLocking2: Reading activeStandbyProperties");
+ Properties activeStandbyProperties = new Properties();
+ activeStandbyProperties.load(new FileInputStream(new File(
+ configDir + "/feature-active-standby-management.properties")));
+ String thisPdpId = activeStandbyProperties
+ .getProperty(ActiveStandbyProperties.NODE_NAME);
+
+ logger.debug("testLocking2: Creating emfDrools");
+ EntityManagerFactory emfDrools = Persistence.createEntityManagerFactory(
+ "junitDroolsPU", activeStandbyProperties);
+
+ DroolsPdpsConnector conn = new JpaDroolsPdpsConnector(emfDrools);
+
+ logger.debug("testLocking2: Cleaning up tables");
+ conn.deleteAllPdps();
+
+ /*
+ * Insert this PDP as designated. Initial standby state will be
+ * either null or cold standby. Demoting should transit state to
+ * hot standby.
+ */
+
+ logger.debug("testLocking2: Inserting PDP= {} as designated", thisPdpId);
+ DroolsPdpImpl pdp = new DroolsPdpImpl(thisPdpId, true, 3, new Date());
+ conn.insertPdp(pdp);
+ DroolsPdpEntity droolsPdpEntity = conn.getPdp(thisPdpId);
+ logger.debug("testLocking2: After insertion, PDP= {} has DESIGNATED= {}",
+ thisPdpId, droolsPdpEntity.isDesignated());
+ assertTrue(droolsPdpEntity.isDesignated() == true);
+
+ logger.debug("testLocking2: Instantiating stateManagement object and promoting PDP={}", thisPdpId);
+ StateManagement smDummy = new StateManagement(emfXacml, "dummy");
+ smDummy.deleteAllStateManagementEntities();
+
+ // Now we want to create a StateManagementFeature and initialize it. It will be
+ // discovered by the ActiveStandbyFeature when the election handler initializes.
+
+ StateManagementFeatureAPI sm = null;
+ for (StateManagementFeatureAPI feature : StateManagementFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ sm = feature;
+ logger.debug("testLocking2 stateManagementFeature.getResourceName(): {}", sm.getResourceName());
+ break;
+ }
+ if(sm == null){
+ logger.error("testLocking2 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testLocking2 failed to initialize. "
+ + "Unable to get instance of StateManagementFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ // Create an ActiveStandbyFeature and initialize it. It will discover the StateManagementFeature
+ // that has been created.
+ ActiveStandbyFeatureAPI activeStandbyFeature = null;
+ for (ActiveStandbyFeatureAPI feature : ActiveStandbyFeatureAPI.impl.getList())
+ {
+ ((PolicySessionFeatureAPI) feature).globalInit(null, configDir);
+ activeStandbyFeature = feature;
+ logger.debug("testLocking2 activeStandbyFeature.getResourceName(): {}", activeStandbyFeature.getResourceName());
+ break;
+ }
+ if(activeStandbyFeature == null){
+ logger.error("testLocking2 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ logger.debug("testLocking2 failed to initialize. "
+ + "Unable to get instance of ActiveStandbyFeatureAPI "
+ + "with resourceID: {}", thisPdpId);
+ }
+
+ /*
+ * Insert another PDP as not designated. Initial standby state will be
+ * either null or cold standby. Demoting should transit state to
+ * hot standby.
+ */
+
+ String standbyPdpId = "pdp2";
+ logger.debug("testLocking2: Inserting PDP= {} as not designated", standbyPdpId);
+ Date yesterday = DateUtils.addDays(new Date(), -1);
+ pdp = new DroolsPdpImpl(standbyPdpId, false, 4, yesterday);
+ conn.insertPdp(pdp);
+ droolsPdpEntity = conn.getPdp(standbyPdpId);
+ logger.debug("testLocking2: After insertion, PDP={} has DESIGNATED= {}",
+ standbyPdpId, droolsPdpEntity.isDesignated());
+ assertTrue(droolsPdpEntity.isDesignated() == false);
+
+ logger.debug("testLocking2: Demoting PDP= {}", standbyPdpId);
+ StateManagement sm2 = new StateManagement(emfXacml, standbyPdpId);
+
+ logger.debug("testLocking2: Runner started; Sleeping {} ms "
+ + "before promoting/demoting", interruptRecoveryTime);
+ Thread.sleep(interruptRecoveryTime);
+
+ logger.debug("testLocking2: Promoting PDP= {}", thisPdpId);
+ sm.promote();
+
+ // demoting PDP should ensure that state transits to hotstandby
+ logger.debug("testLocking2: Demoting PDP={}", standbyPdpId);
+ sm2.demote();
+
+ logger.debug("testLocking2: Sleeping {} ms, to allow time for to come up", sleepTime);
+ Thread.sleep(sleepTime);
+
+ logger.debug("testLocking2: Waking up and invoking startTransaction on active PDP={}"
+ + ", designated= {}", thisPdpId, conn.getPdp(thisPdpId).isDesignated());
+
+ IntegrityMonitor droolsPdpIntegrityMonitor = IntegrityMonitor.getInstance();
+
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ droolsPdpIntegrityMonitor.endTransaction();
+ logger.debug("testLocking2: As expected, transaction successful");
+ } catch (AdministrativeStateException e) {
+ logger.error("testLocking2: Unexpectedly caught AdministrativeStateException, ", e);
+ assertTrue(false);
+ } catch (StandbyStatusException e) {
+ logger.error("testLocking2: Unexpectedly caught StandbyStatusException, ", e);
+ assertTrue(false);
+ } catch (Exception e) {
+ logger.error("testLocking2: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ }
+
+ // demoting should cause state to transit to hotstandby followed by re-promotion.
+ logger.debug("testLocking2: demoting PDP={}", thisPdpId);
+ sm.demote();
+
+ logger.debug("testLocking2: sleeping {}"
+ + " to allow election handler to re-promote PDP={}", electionWaitSleepTime, thisPdpId);
+ Thread.sleep(electionWaitSleepTime);
+
+ logger.debug("testLocking2: Waking up and invoking startTransaction "
+ + "on re-promoted PDP= {}, designated= {}",
+ thisPdpId, conn.getPdp(thisPdpId).isDesignated());
+ try {
+ droolsPdpIntegrityMonitor.startTransaction();
+ droolsPdpIntegrityMonitor.endTransaction();
+ logger.debug("testLocking2: As expected, transaction successful");
+ } catch (AdministrativeStateException e) {
+ logger.error("testLocking2: Unexpectedly caught AdministrativeStateException, ", e);
+ assertTrue(false);
+ } catch (StandbyStatusException e) {
+ logger.error("testLocking2: Unexpectedly caught StandbyStatusException, ", e);
+ assertTrue(false);
+ } catch (Exception e) {
+ logger.error("testLocking2: Unexpectedly caught Exception, ", e);
+ assertTrue(false);
+ }
+
+ logger.debug("testLocking2: Verifying designated status for PDP= {}", standbyPdpId);
+ boolean standbyPdpDesignated = conn.getPdp(standbyPdpId).isDesignated();
+ assertTrue(standbyPdpDesignated == false);
+
+ logger.debug("\n\ntestLocking2: Exiting\n\n");
+ Thread.sleep(interruptRecoveryTime);
+ }
+}
diff --git a/feature-active-standby-management/src/test/resources/META-INF/persistence.xml b/feature-active-standby-management/src/test/resources/META-INF/persistence.xml
new file mode 100644
index 0000000..ff6ac58
--- /dev/null
+++ b/feature-active-standby-management/src/test/resources/META-INF/persistence.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ ============LICENSE_START=======================================================
+ feature-active-standby-management
+ ================================================================================
+ Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ============LICENSE_END=========================================================
+ -->
+
+<persistence version="2.1"
+ xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
+ <persistence-unit name="junitDroolsPU" transaction-type="RESOURCE_LOCAL">
+ <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+ <class>org.onap.policy.drools.activestandby.DroolsPdpEntity</class>
+ <properties>
+ <property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
+ <property name="javax.persistence.schema-generation.scripts.action" value="drop-and-create"/>
+ <property name="javax.persistence.schema-generation.scripts.create-target" value="./sql/generatedCreateDrools.ddl"/>
+ <property name="javax.persistence.schema-generation.scripts.drop-target" value="./sql/generatedDropDrools.ddl"/>
+ </properties>
+ </persistence-unit>
+ <persistence-unit name="junitXacmlPU" transaction-type="RESOURCE_LOCAL">
+ <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+ <class>org.onap.policy.common.im.jpa.StateManagementEntity</class>
+ <class>org.onap.policy.common.im.jpa.ForwardProgressEntity</class>
+ <class>org.onap.policy.common.im.jpa.ResourceRegistrationEntity</class>
+ <properties>
+ <property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
+ <property name="javax.persistence.schema-generation.scripts.action" value="drop-and-create"/>
+ <property name="javax.persistence.schema-generation.scripts.create-target" value="./sql/generatedCreateXacml.ddl"/>
+ <property name="javax.persistence.schema-generation.scripts.drop-target" value="./sql/generatedDropXacml.ddl"/>
+ </properties>
+ </persistence-unit>
+</persistence>
diff --git a/feature-active-standby-management/src/test/resources/feature-active-standby-management.properties b/feature-active-standby-management/src/test/resources/feature-active-standby-management.properties
new file mode 100644
index 0000000..bbae5d9
--- /dev/null
+++ b/feature-active-standby-management/src/test/resources/feature-active-standby-management.properties
@@ -0,0 +1,39 @@
+###
+# ============LICENSE_START=======================================================
+# feature-active-standby-management
+# ================================================================================
+# Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END=========================================================
+###
+
+# DB properties
+javax.persistence.jdbc.driver = org.h2.Driver
+javax.persistence.jdbc.url = jdbc:h2:file:./sql/activestandbymanagement
+javax.persistence.jdbc.user = sa
+javax.persistence.jdbc.password =
+
+# Must be unique across the system
+resource.name=pdp1
+# Name of the site in which this node is hosted
+site_name=pdp_1
+
+# Needed by DroolsPdpsElectionHandler
+pdp.checkInterval=1500
+pdp.updateInterval=1000
+#pdp.timeout=3000
+# Need long timeout, because testTransaction is only run every 10 seconds.
+pdp.timeout=15000
+#how long do we wait for the pdp table to populate on initial startup
+pdp.initialWait=20000
\ No newline at end of file
diff --git a/feature-active-standby-management/src/test/resources/feature-state-management.properties b/feature-active-standby-management/src/test/resources/feature-state-management.properties
new file mode 100644
index 0000000..3d767a1
--- /dev/null
+++ b/feature-active-standby-management/src/test/resources/feature-state-management.properties
@@ -0,0 +1,74 @@
+###
+# ============LICENSE_START=======================================================
+# feature-active-standby-management
+# ================================================================================
+# Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END=========================================================
+###
+
+# DB properties
+javax.persistence.jdbc.driver = org.h2.Driver
+javax.persistence.jdbc.url = jdbc:h2:file:./sql/statemanagement
+javax.persistence.jdbc.user = sa
+javax.persistence.jdbc.password =
+
+# DroolsPDPIntegrityMonitor Properties
+hostPort = 0.0.0.0:57692
+
+#IntegrityMonitor Properties
+
+# Must be unique across the system
+resource.name=pdp1
+# Name of the site in which this node is hosted
+site_name = pdp_1
+# Forward Progress Monitor update interval seconds
+fp_monitor_interval = 30
+# Failed counter threshold before failover
+failed_counter_threshold = 3
+# Interval between test transactions when no traffic seconds
+test_trans_interval = 10
+# Interval between writes of the FPC to the DB seconds
+write_fpc_interval = 5
+# Node type Note: Make sure you don't leave any trailing spaces, or you'll get an 'invalid node type' error!
+node_type = pdp_drools
+# Dependency groups are groups of resources upon which a node operational state is dependent upon.
+# Each group is a comma-separated list of resource names and groups are separated by a semicolon. For example:
+# dependency_groups=site_1.astra_1,site_1.astra_2;site_1.brms_1,site_1.brms_2;site_1.logparser_1;site_1.pypdp_1
+dependency_groups=
+# When set to true, dependent health checks are performed by using JMX to invoke test() on the dependent.
+# The default false is to use state checks for health.
+test_via_jmx=true
+# This is the max number of seconds beyond which a non incrementing FPC is considered a failure
+max_fpc_update_interval=120
+# Run the state audit every 60 seconds (60000 ms). The state audit finds stale DB entries in the
+# forwardprogressentity table and marks the node as disabled/failed in the statemanagemententity
+# table. NOTE! It will only run on nodes that have a standbystatus = providingservice.
+# A value of <= 0 will turn off the state audit.
+state_audit_interval_ms=60000
+# The refresh state audit is run every (default) 10 minutes (600000 ms) to clean up any state corruption in the
+# DB statemanagemententity table. It only refreshes the DB state entry for the local node. That is, it does not
+# refresh the state of any other nodes. A value <= 0 will turn the audit off. Any other value will override
+# the default of 600000 ms.
+refresh_state_audit_interval_ms=600000
+
+
+# Repository audit properties
+# Flag to control the execution of the subsystemTest for the Nexus Maven repository
+repository.audit.is.active=false
+repository.audit.ignore.errors=true
+
+# DB Audit Properties
+# Flag to control the execution of the subsystemTest for the Database
+db.audit.is.active=false
diff --git a/feature-active-standby-management/src/test/resources/logback-test.xml b/feature-active-standby-management/src/test/resources/logback-test.xml
new file mode 100644
index 0000000..a36bdb1
--- /dev/null
+++ b/feature-active-standby-management/src/test/resources/logback-test.xml
@@ -0,0 +1,46 @@
+<!--
+ ============LICENSE_START=======================================================
+ feature-state-management
+ ================================================================================
+ Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ============LICENSE_END=========================================================
+ -->
+
+<!-- Controls the output of logs for JUnit tests -->
+
+<configuration>
+
+ <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+ <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
+ <Pattern>
+ %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M\(%line\) - %msg%n
+ </Pattern>
+ </encoder>
+ </appender>
+ <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+ <file>logs/debug.log</file>
+ <encoder>
+ <Pattern>
+ %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M\(%line\) - %msg%n
+ </Pattern>
+ </encoder>
+ </appender>
+
+ <root level="debug">
+ <appender-ref ref="STDOUT" />
+ <appender-ref ref="FILE" />
+ </root>
+
+</configuration>
diff --git a/feature-session-persistence/src/test/resources/logback-test.xml b/feature-session-persistence/src/test/resources/logback-test.xml
index 5aeaf90..6e919eb 100644
--- a/feature-session-persistence/src/test/resources/logback-test.xml
+++ b/feature-session-persistence/src/test/resources/logback-test.xml
@@ -22,18 +22,25 @@
<configuration>
- <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
- <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
- <Pattern>
- %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M\(%line\) - %msg%n
- </Pattern>
- </encoder>
- </appender>
-
- <logger name="org.onap.policy.drools.persistence" level="INFO"/>
-
- <root level="warn">
- <appender-ref ref="STDOUT"/>
- </root>
+ <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+ <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
+ <Pattern>
+ %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M\(%line\) - %msg%n
+ </Pattern>
+ </encoder>
+ </appender>
+ <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+ <file>logs/debug.log</file>
+ <encoder>
+ <Pattern>
+ %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M\(%line\) - %msg%n
+ </Pattern>
+ </encoder>
+ </appender>
+
+ <root level="debug">
+ <appender-ref ref="STDOUT" />
+ <appender-ref ref="FILE" />
+ </root>
</configuration>
diff --git a/packages/install/pom.xml b/packages/install/pom.xml
index 7a765c3..f1bde43 100644
--- a/packages/install/pom.xml
+++ b/packages/install/pom.xml
@@ -101,6 +101,12 @@
<version>${project.version}</version>
<type>zip</type>
</dependency>
+ <dependency>
+ <groupId>org.onap.policy.drools-pdp</groupId>
+ <artifactId>feature-active-standby-management</artifactId>
+ <version>${project.version}</version>
+ <type>zip</type>
+ </dependency>
</dependencies>
</project>
diff --git a/pom.xml b/pom.xml
index 35aca8e..6f9b2f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -75,6 +75,8 @@
<module>feature-test-transaction</module>
<module>api-state-management</module>
<module>feature-state-management</module>
+ <module>api-active-standby-management</module>
+ <module>feature-active-standby-management</module>
<module>packages</module>
</modules>