diff --git a/common-app-logging/pom.xml b/common-app-logging/pom.xml
new file mode 100644
index 0000000..8089d95
--- /dev/null
+++ b/common-app-logging/pom.xml
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+
+    <artifactId>common-app-logging</artifactId>
+    <parent>
+        <groupId>org.openecomp.sdc</groupId>
+        <artifactId>sdc-main</artifactId>
+        <version>1.6.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>${servlet-api.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.ws.rs</groupId>
+            <artifactId>javax.ws.rs-api</artifactId>
+            <version>${ws.rs.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.aspectj</groupId>
+            <artifactId>aspectjrt</artifactId>
+            <version>${aspectjrt.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${lang3.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>${logback.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version><!--$NO-MVN-MAN-VER$ -->
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.code.bean-matchers</groupId>
+            <artifactId>bean-matchers</artifactId>
+            <version>${bean-matchers.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>commons-validator</groupId>
+            <artifactId>commons-validator</artifactId>
+            <version>1.6</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>commons-collections</artifactId>
+                    <groupId>commons-collections</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
+        <dependency>
+            <artifactId>commons-collections</artifactId>
+            <groupId>commons-collections</groupId>
+            <version>3.2.2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.logging-analytics</groupId>
+            <artifactId>logging-slf4j</artifactId>
+            <version>${onap.logging.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.logging-analytics</groupId>
+            <artifactId>logging-filter-base</artifactId>
+            <version>${onap.logging.version}</version>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/ILogFieldsHandler.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/ILogFieldsHandler.java
new file mode 100644
index 0000000..7d17833
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/ILogFieldsHandler.java
@@ -0,0 +1,181 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.api;
+
+import org.openecomp.sdc.common.log.enums.Severity;
+
+public interface ILogFieldsHandler {
+    void startAuditTimer();
+
+    void startMetricTimer();
+
+    void stopAuditTimer();
+
+    void stopMetricTimer();
+
+    void setClassName(String className);
+
+    void setServerFQDN(String serverFQDN);
+
+    void setServerIPAddress(String serverIPAddress);
+
+    // intended for setting this parameter in a given thread
+    void setServerFQDNInternally();
+
+    // intended for setting this parameter in a given thread
+    void setServerIPAddressInternally();
+
+    void setInstanceUUID(String instanceUUID);
+
+    void setProcessKey(String processKey);
+
+    void setAlertSeverity(Severity alertSeverity);
+
+    void setOptCustomField1(String customField1);
+
+    void setOutgoingInvocationId(String outgoingInvocationId);
+
+    void setKeyRequestId(String keyRequestId);
+
+    void setRemoteHost(String remoteHost);
+
+    void setServiceName(String serviceName);
+
+    void setStatusCode(String statusCode);
+
+    void setPartnerName(String partnerName);
+
+    void setResponseCode(int responseCode);
+
+    void setResponseDesc(String responseDesc);
+
+    void setServiceInstanceId(String serviceInstanceId);
+
+    void setTargetEntity(String targetEntity);
+
+    void setTargetServiceName(String targetServiceName);
+
+    void setTargetVirtualEntity(String targetVirtualEntity);
+
+    void setErrorCode(int errorCode);
+
+    void setErrorCategory(String errorCategory);
+
+    String getErrorCode();
+
+    String getServiceName();
+
+    String getTargetEntity();
+
+    String getTargetServiceName();
+
+    String getErrorCategory();
+
+    void clear();
+
+    boolean isMDCParamEmpty(String mdcKeyName);
+
+    String getFqdn();
+
+    String getHostAddress();
+
+    String getKeyRequestId();
+
+    void removeStatusCode();
+
+    void removePartnerName();
+
+    void removeResponseCode();
+
+    void removeResponseDesc();
+
+    void removeServiceInstanceId();
+
+    void removeTargetEntity();
+
+    void removeTargetServiceName();
+
+    void removeTargetVirtualEntity();
+
+    void removeErrorCode();
+
+    void removeErrorCategory();
+
+    void removeErrorDescription();
+
+    void setAuditMessage(String message);
+
+    String getAuditMessage();
+
+    //service supportability [US 496441]
+
+    String getSupportablityAction();
+
+    String getSupportablityCsarUUID();
+
+    String getSupportablityCsarVersion();
+
+    String getSupportablityComponentName();
+
+    String getSupportablityComponentUUID();
+
+    String getSupportablityComponentVersion();
+
+    String getSupportablityStatusCode();
+
+    void setSupportablityAction(String action);
+
+    void setSupportablityCsarUUID(String uuid);
+
+    void setSupportablityCsarVersion(String version);
+
+    void setSupportablityComponentName(String name);
+
+    void setSupportablityComponentUUID(String UUID);
+
+    void setSupportablityComponentVersion(String version);
+
+    void setSupportablityStatusCode(String statusCode);
+
+    void removeSupportablityAction();
+
+    void removeSupportablityComponentName();
+
+    void removeSupportablityComponentUUID();
+
+    void removeSupportablityComponentVersion();
+
+    void removeSupportablityCsarUUID();
+
+    void removeSupportablityCsarVersion();
+
+    void removeSupportablityStatusCode();
+
+    String getPartnerName();
+
+    String getRemoteHost();
+
+    String getServerIpAddress();
+
+    void setKeyInvocationId(String invocationId);
+
+    CharSequence getKeyInvocationId();
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/ILogger.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/ILogger.java
new file mode 100644
index 0000000..866498c
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/ILogger.java
@@ -0,0 +1,39 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.api;
+
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.slf4j.Marker;
+
+import java.util.List;
+
+public interface ILogger {
+    void log(LogLevel logLevel, String message);
+    void log(Marker marker, LogLevel logLevel, String message);
+    void log(LogLevel logLevel, String message, Object... params);
+    void log(Marker marker, LogLevel logLevel, String message, Object... params);
+    void log(LogLevel logLevel, String message, Throwable throwable);
+    List<String> getMandatoryFields();
+    ILogger clear();
+    ILogger startTimer();
+    ILogger setKeyRequestId(String keyRequestId);
+
+    ILogger setKeyInvocationId(String keyInvocationId);
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/LogConfigurationConstants.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/LogConfigurationConstants.java
new file mode 100644
index 0000000..d1d5a3a
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/api/LogConfigurationConstants.java
@@ -0,0 +1,49 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.api;
+
+public final class LogConfigurationConstants {
+
+    public static final String MDC_SERVICE_INSTANCE_ID = "ServiceInstanceID";
+    public static final String MDC_SERVER_IP_ADDRESS = "ServerIPAddress";
+    public static final String MDC_REMOTE_HOST = "RemoteHost";
+    public static final String MDC_AUDIT_MESSAGE = "AuditMessage";
+    public static final String MDC_END_TIMESTAMP = "EndTimestamp";
+    public static final String MDC_ELAPSED_TIME = "ElapsedTime";
+    public static final String MDC_PROCESS_KEY = "ProcessKey";
+    public static final String MDC_TARGET_VIRTUAL_ENTITY = "TargetVirtualEntity";
+    public static final String MDC_ERROR_CATEGORY = "ErrorCategory";
+    public static final String MDC_ERROR_CODE = "ErrorCode";
+    public static final String MDC_ERROR_DESC = "ErrorDescription";
+    public static final String MDC_CLASS_NAME = "ClassName";
+    public static final String MDC_OPT_FIELD1 = "CustomField1";
+    public static final String MDC_OPT_FIELD2 = "CustomField2";
+    public static final String MDC_OPT_FIELD3 = "CustomField3";
+    public static final String MDC_OPT_FIELD4 = "CustomField4";
+    public static final String MDC_OUTGOING_INVOCATION_ID = "OutgoingInvocationId";
+    public static final String MDC_SUPPORTABLITY_ACTION = "SupportablityAction";
+    public static final String MDC_SUPPORTABLITY_CSAR_UUID = "SupportablityCsarUUID";
+    public static final String MDC_SUPPORTABLITY_CSAR_VERSION = "SupportablityCsarVersion";
+    public static final String MDC_SUPPORTABLITY_COMPONENT_NAME = "SupportablityComponentName";
+    public static final String MDC_SUPPORTABLITY_COMPONENT_UUID = "SupportablityComponentUUID";
+    public static final String MDC_SUPPORTABLITY_COMPONENT_VERSION = "SupportablityComponentVersion";
+    public static final String MDC_SUPPORTABLITY_STATUS_CODE = "SupportablityStatus";
+}
\ No newline at end of file
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/ErrorLogOptionalData.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/ErrorLogOptionalData.java
new file mode 100644
index 0000000..d5279b1
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/ErrorLogOptionalData.java
@@ -0,0 +1,60 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+public class ErrorLogOptionalData {
+    private String targetEntity;
+    private String targetServiceName;
+
+    String getTargetEntity() {
+        return targetEntity;
+    }
+
+    String getTargetServiceName() {
+        return targetServiceName;
+    }
+
+    public static Builder newBuilder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+        private final ErrorLogOptionalData instance;
+
+        private Builder() {
+            instance = new ErrorLogOptionalData();
+        }
+
+        public Builder targetEntity(String targetEntity) {
+            instance.targetEntity = targetEntity;
+            return this;
+        }
+
+        public Builder targetServiceName(String targetServiceName) {
+            instance.targetServiceName = targetServiceName;
+            return this;
+        }
+
+        public ErrorLogOptionalData build() {
+            return instance;
+        }
+    }
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LogFieldsMdcHandler.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LogFieldsMdcHandler.java
new file mode 100644
index 0000000..361c255
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LogFieldsMdcHandler.java
@@ -0,0 +1,504 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.apache.commons.lang3.StringUtils;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.api.LogConfigurationConstants;
+import org.openecomp.sdc.common.log.enums.ConstantsLogging;
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import javax.servlet.http.HttpServletRequest;
+import java.net.InetAddress;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+
+public class LogFieldsMdcHandler implements ILogFieldsHandler {
+
+  private static LogFieldsMdcHandler instanceMdcWrapper = new LogFieldsMdcHandler();
+
+  public static LogFieldsMdcHandler getInstance() {
+    return instanceMdcWrapper;
+  }
+
+  private final static String dateFormatPattern = "yyyy-MM-dd HH:mm:ss.SSSz";
+  private final DateTimeFormatter dateTimeFormatter = DateTimeFormatter
+      .ofPattern(dateFormatPattern);
+  protected static Logger log = LoggerFactory.getLogger(LogFieldsMdcHandler.class.getName());
+  protected static String hostAddress;
+  private static String fqdn;
+
+  static {
+    try {
+      hostAddress = InetAddress.getLocalHost().getHostAddress();
+      fqdn = InetAddress.getByName(hostAddress).getCanonicalHostName();
+    } catch (Exception ex) {
+      log.error("failed to get machine parameters", ex);
+    }
+  }
+
+  @Override
+  public void startAuditTimer() {
+    if (StringUtils.isEmpty(MDC.get(ONAPLogConstants.MDCs.ENTRY_TIMESTAMP))) {
+      MDC.put(ONAPLogConstants.MDCs.ENTRY_TIMESTAMP, generatedTimeNow());
+    }
+  }
+
+  @Override
+  public void startMetricTimer() {
+    if (StringUtils.isEmpty(MDC.get(ONAPLogConstants.MDCs.INVOKE_TIMESTAMP))) {
+      MDC.put(ONAPLogConstants.MDCs.INVOKE_TIMESTAMP, generatedTimeNow());
+    }
+  }
+
+  @Override
+  public void stopAuditTimer() {
+    //set start time if it is not set yet
+    startAuditTimer();
+    MDC.put(LogConfigurationConstants.MDC_END_TIMESTAMP, generatedTimeNow());
+    setElapsedTime(MDC.get(ONAPLogConstants.MDCs.ENTRY_TIMESTAMP));
+  }
+
+  @Override
+  public void stopMetricTimer() {
+    //set start time if it is not set yet
+    startMetricTimer();
+    MDC.put(LogConfigurationConstants.MDC_END_TIMESTAMP, generatedTimeNow());
+    setElapsedTime(MDC.get(ONAPLogConstants.MDCs.INVOKE_TIMESTAMP));
+  }
+
+  @Override
+  public void setClassName(String className) {
+    MDC.put(LogConfigurationConstants.MDC_CLASS_NAME, className);
+  }
+
+  @Override
+  public void setServerFQDN(String serverFQDN) {
+    MDC.put(ONAPLogConstants.MDCs.SERVER_FQDN, serverFQDN);
+  }
+
+  @Override
+  public void setServerIPAddress(String serverIPAddress) {
+    MDC.put(LogConfigurationConstants.MDC_SERVER_IP_ADDRESS, serverIPAddress);
+  }
+
+  @Override
+  public void setServerFQDNInternally() {
+    setServerFQDN(fqdn);
+  }
+
+  @Override
+  public void setServerIPAddressInternally() {
+    setServerIPAddress(hostAddress);
+  }
+
+  @Override
+  public void setInstanceUUID(String instanceUUID) {
+    MDC.put(ONAPLogConstants.MDCs.INSTANCE_UUID, instanceUUID);
+  }
+
+  @Override
+  public void setProcessKey(String processKey) {
+    MDC.put(LogConfigurationConstants.MDC_PROCESS_KEY, processKey);
+  }
+
+  @Override
+  public void setAlertSeverity(Severity alertSeverity) {
+    MDC.put(ONAPLogConstants.MDCs.RESPONSE_SEVERITY, String.valueOf(alertSeverity.getSeverityType()));
+  }
+
+  @Override
+  public void setOptCustomField1(String customField1) {
+    MDC.put(LogConfigurationConstants.MDC_OPT_FIELD1, customField1);
+  }
+
+  @Override
+  public void setOutgoingInvocationId(String outgoingInvocationId) {
+    MDC.put(LogConfigurationConstants.MDC_OUTGOING_INVOCATION_ID, outgoingInvocationId);
+  }
+
+  @Override
+  public void setKeyRequestId(String keyRequestId) {
+    MDC.put(ONAPLogConstants.MDCs.REQUEST_ID,
+        keyRequestId); // eg. servletRequest.getSession().getId()
+  }
+
+  @Override
+  public void setKeyInvocationId(String invocationId ) {
+    MDC.put(ONAPLogConstants.MDCs.INVOCATION_ID,
+            invocationId);
+  }
+
+  @Override
+  public void setRemoteHost(String remoteHost) {
+    MDC.put(LogConfigurationConstants.MDC_REMOTE_HOST, remoteHost);
+  }
+
+  @Override
+  public void setServiceName(String serviceName) {
+    MDC.put(ONAPLogConstants.MDCs.SERVICE_NAME, serviceName);
+  }
+
+  @Override
+  public void setStatusCode(String statusCode) {
+    MDC.put(ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE, statusCode);
+  }
+
+  @Override
+  public void setPartnerName(String partnerName) {
+    MDC.put(ONAPLogConstants.MDCs.PARTNER_NAME, partnerName);
+  }
+
+  @Override
+  public void setResponseCode(int responseCode) {
+    MDC.put(ONAPLogConstants.MDCs.RESPONSE_CODE, Integer.toString(responseCode));
+  }
+
+  @Override
+  public void setResponseDesc(String responseDesc) {
+    MDC.put(ONAPLogConstants.MDCs.RESPONSE_DESCRIPTION, responseDesc);
+  }
+
+  @Override
+  public void setServiceInstanceId(String serviceInstanceId) {
+    MDC.put(LogConfigurationConstants.MDC_SERVICE_INSTANCE_ID, serviceInstanceId);
+  }
+
+  @Override
+  public void setTargetEntity(String targetEntity) {
+    MDC.put(ONAPLogConstants.MDCs.TARGET_ENTITY, targetEntity);
+  }
+
+  @Override
+  public void setTargetServiceName(String targetServiceName) {
+    MDC.put(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME, targetServiceName);
+  }
+
+  @Override
+  public void setTargetVirtualEntity(String targetVirtualEntity) {
+    MDC.put(LogConfigurationConstants.MDC_TARGET_VIRTUAL_ENTITY, targetVirtualEntity);
+  }
+
+  @Override
+  public void setErrorCode(int errorCode) {
+    MDC.put(LogConfigurationConstants.MDC_ERROR_CODE,  Integer.toString(errorCode));
+  }
+
+  @Override
+  public void setErrorCategory(String errorCategory) {
+    MDC.put(LogConfigurationConstants.MDC_ERROR_CATEGORY, errorCategory);
+  }
+
+  @Override
+  public String getErrorCode() {
+    return MDC.get(LogConfigurationConstants.MDC_ERROR_CODE);
+  }
+
+  @Override
+  public String getServiceName() {
+    return MDC.get(ONAPLogConstants.MDCs.SERVICE_NAME);
+  }
+
+  @Override
+  public String getErrorCategory() {
+    return MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY);
+  }
+
+  @Override
+  public void clear() {
+    MDC.clear();
+  }
+
+  @Override
+  public boolean isMDCParamEmpty(String mdcKeyName) {
+    return StringUtils.isEmpty(MDC.get(mdcKeyName));
+  }
+
+  @Override
+  public String getFqdn() {
+    return fqdn;
+  }
+
+  @Override
+  public String getHostAddress() {
+    return hostAddress;
+  }
+
+  @Override
+  public String getKeyRequestId() {
+    return MDC.get(ONAPLogConstants.MDCs.REQUEST_ID);
+  }
+
+  @Override
+  public String getTargetEntity() {
+    return MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY);
+  }
+
+  @Override
+  public String getTargetServiceName() {
+    return MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME);
+  }
+
+  @Override
+  public void removeStatusCode() {
+    MDC.remove(ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE);
+  }
+
+  @Override
+  public void removePartnerName() {
+    MDC.remove(ONAPLogConstants.MDCs.PARTNER_NAME);
+  }
+
+  @Override
+  public void removeResponseCode() {
+    MDC.remove(ONAPLogConstants.MDCs.RESPONSE_CODE);
+  }
+
+  @Override
+  public void removeResponseDesc() {
+    MDC.remove(ONAPLogConstants.MDCs.RESPONSE_DESCRIPTION);
+  }
+
+  @Override
+  public void removeServiceInstanceId() {
+    MDC.remove(LogConfigurationConstants.MDC_SERVICE_INSTANCE_ID);
+  }
+
+  @Override
+  public void removeTargetEntity() {
+    MDC.remove(ONAPLogConstants.MDCs.TARGET_ENTITY);
+  }
+
+  @Override
+  public void removeTargetServiceName() {
+    MDC.remove(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME);
+  }
+
+  @Override
+  public void removeTargetVirtualEntity() {
+    MDC.remove(LogConfigurationConstants.MDC_TARGET_VIRTUAL_ENTITY);
+  }
+
+  @Override
+  public void removeErrorCode() {
+    MDC.remove(LogConfigurationConstants.MDC_ERROR_CODE);
+  }
+
+  @Override
+  public void removeErrorCategory() {
+    MDC.remove(LogConfigurationConstants.MDC_ERROR_CATEGORY);
+  }
+
+  @Override
+  public void removeErrorDescription() {
+    MDC.remove(LogConfigurationConstants.MDC_ERROR_DESC);
+  }
+
+  @Override
+  public void setAuditMessage(String message) {
+    MDC.put(LogConfigurationConstants.MDC_AUDIT_MESSAGE, message);
+  }
+
+  @Override
+  public String getAuditMessage() {
+    return MDC.get(LogConfigurationConstants.MDC_AUDIT_MESSAGE);
+  }
+
+  @Override
+  public String getSupportablityStatusCode() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_STATUS_CODE);
+  }
+
+  @Override
+  public String getSupportablityAction() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_ACTION);
+
+  }
+
+
+  @Override
+  public String getRemoteHost() {
+    return MDC.get(LogConfigurationConstants.MDC_REMOTE_HOST);
+  }
+
+  @Override
+  public String getServerIpAddress() {
+    return MDC.get(LogConfigurationConstants.MDC_SERVER_IP_ADDRESS);
+  }
+
+  @Override
+  public String getSupportablityCsarUUID() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_UUID);
+  }
+
+  @Override
+  public String getSupportablityCsarVersion() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_VERSION);
+
+  }
+
+  @Override
+  public String getSupportablityComponentName() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_NAME);
+  }
+
+  @Override
+  public String getSupportablityComponentUUID() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_UUID);
+
+  }
+
+  @Override
+  public String getSupportablityComponentVersion() {
+    return MDC.get(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_VERSION);
+  }
+
+  @Override
+  public String getKeyInvocationId() {
+    return MDC.get(ONAPLogConstants.MDCs.INVOCATION_ID);
+  }
+
+  @Override
+  public void setSupportablityStatusCode(String statusCode) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_STATUS_CODE, statusCode);
+  }
+
+  @Override
+  public void setSupportablityAction(String action) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_ACTION, action);
+  }
+
+  @Override
+  public void setSupportablityCsarUUID(String uuid) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_UUID, uuid);
+  }
+
+  @Override
+  public void setSupportablityCsarVersion(String version) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_VERSION, version);
+  }
+
+  @Override
+  public void setSupportablityComponentName(String name) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_NAME, name);
+  }
+
+  @Override
+  public void setSupportablityComponentUUID(String uuid) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_UUID, uuid);
+  }
+
+  @Override
+  public void setSupportablityComponentVersion(String version) {
+    MDC.put(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_VERSION, version);
+  }
+
+  @Override
+  public void removeSupportablityAction() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_ACTION);
+  }
+
+  @Override
+  public void removeSupportablityComponentName() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_NAME);
+  }
+
+  @Override
+  public void removeSupportablityComponentUUID() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_UUID);
+  }
+
+  @Override
+  public void removeSupportablityComponentVersion() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_VERSION);
+  }
+
+  @Override
+  public void removeSupportablityCsarUUID() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_UUID);
+  }
+
+  @Override
+  public void removeSupportablityCsarVersion() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_VERSION);
+  }
+
+  @Override
+  public void removeSupportablityStatusCode() {
+    MDC.remove(LogConfigurationConstants.MDC_SUPPORTABLITY_STATUS_CODE);
+  }
+
+  @Override
+  public String getPartnerName() {
+    return MDC.get(ONAPLogConstants.MDCs.PARTNER_NAME);
+  }
+
+  private void setElapsedTime(String beginTimestamp) {
+    try {
+      final LocalDateTime startTime = LocalDateTime.parse(beginTimestamp, dateTimeFormatter);
+      final LocalDateTime endTime = LocalDateTime
+          .parse(MDC.get(LogConfigurationConstants.MDC_END_TIMESTAMP), dateTimeFormatter);
+      final Duration timeDifference = Duration.between(startTime, endTime);
+
+      MDC.put(LogConfigurationConstants.MDC_ELAPSED_TIME, String.valueOf(timeDifference.toMillis()));
+
+    } catch (Exception ex) {
+      log.error("failed to calculate elapsed time", ex);
+    }
+  }
+
+  private String generatedTimeNow() {
+    return dateTimeFormatter
+        .withZone(ZoneOffset.UTC)
+        .format(Instant.now());
+  }
+
+  public void collectRequestInfoForErrorAndDebugLogging(HttpServletRequest httpRequest) {
+    LogFieldsMdcHandler.getInstance().clear();
+    String partnerName = LoggerBase.getPartnerName(httpRequest);
+    LogFieldsMdcHandler.getInstance().setPartnerName(partnerName);
+
+    String serviceInstanceID = httpRequest.getHeader(ConstantsLogging.X_ECOMP_SERVICE_ID_HEADER);
+    LogFieldsMdcHandler.getInstance().setServiceInstanceId(serviceInstanceID);
+
+    LogFieldsMdcHandler.getInstance().setRemoteHost(httpRequest.getRemoteHost());
+    LogFieldsMdcHandler.getInstance().setServerIPAddress(httpRequest.getLocalAddr());
+
+    String requestId = LoggerBase.getRequestId(httpRequest);
+    LogFieldsMdcHandler.getInstance().setKeyRequestId(requestId);
+
+    LogFieldsMdcHandler.getInstance().setServiceName(httpRequest.getRequestURI());
+  }
+
+  public void addInfoForErrorAndDebugLogging(String partnerName){
+    LogFieldsMdcHandler.getInstance().clear();
+    LogFieldsMdcHandler.getInstance().setPartnerName(partnerName);
+
+    String requestId = LoggerBase.generateKeyRequestId();
+    LogFieldsMdcHandler.getInstance().setKeyRequestId(requestId);
+  }
+}
\ No newline at end of file
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerAudit.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerAudit.java
new file mode 100644
index 0000000..502b7a6
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerAudit.java
@@ -0,0 +1,173 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.api.LogConfigurationConstants;
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.slf4j.Logger;
+import org.slf4j.MDC;
+import org.slf4j.MarkerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class LoggerAudit extends LoggerBase {
+    private static List<String> mandatoryFields = new ArrayList<>(Arrays.asList(
+            ONAPLogConstants.MDCs.ENTRY_TIMESTAMP,
+            LogConfigurationConstants.MDC_END_TIMESTAMP,
+            ONAPLogConstants.MDCs.REQUEST_ID,
+            ONAPLogConstants.MDCs.SERVICE_NAME,
+            ONAPLogConstants.MDCs.PARTNER_NAME,
+            ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE,
+            ONAPLogConstants.MDCs.RESPONSE_CODE,
+            LogConfigurationConstants.MDC_SERVICE_INSTANCE_ID,
+            ONAPLogConstants.MDCs.RESPONSE_DESCRIPTION,
+            LogConfigurationConstants.MDC_ELAPSED_TIME,
+            LogConfigurationConstants.MDC_SERVER_IP_ADDRESS,
+            ONAPLogConstants.MDCs.SERVER_FQDN));
+
+    private static List<String> optionalFields = new ArrayList<>(Arrays.asList(
+            ONAPLogConstants.MDCs.INSTANCE_UUID,
+            ONAPLogConstants.MDCs.RESPONSE_SEVERITY,
+            LogConfigurationConstants.MDC_REMOTE_HOST,
+            LogConfigurationConstants.MDC_CLASS_NAME,
+            LogConfigurationConstants.MDC_PROCESS_KEY,
+            LogConfigurationConstants.MDC_OPT_FIELD1,
+            LogConfigurationConstants.MDC_OPT_FIELD2,
+            LogConfigurationConstants.MDC_OPT_FIELD3,
+            LogConfigurationConstants.MDC_OPT_FIELD4));
+
+    LoggerAudit(ILogFieldsHandler ecompMdcWrapper, Logger logger) {
+        //TODO Andrey, set default marker
+        super (ecompMdcWrapper, MarkerFactory.getMarker(ONAPLogConstants.Markers.ENTRY.getName()), logger);
+        //put the remote host and FQDN values from another thread if they are set
+        ecompMdcWrapper.setServerIPAddressInternally();
+        ecompMdcWrapper.setServerFQDNInternally();
+    }
+
+    @Override
+    public LoggerAudit startTimer() {
+        ecompLogFieldsHandler.startAuditTimer();
+        return this;
+    }
+
+    public LoggerAudit stopTimer() {
+        ecompLogFieldsHandler.stopAuditTimer();
+        return this;
+    }
+
+    public LoggerAudit setInstanceUUID(String instanceUUID) {
+        ecompLogFieldsHandler.setInstanceUUID(instanceUUID);
+        return this;
+    }
+
+    public LoggerAudit setOptClassName(String className) {
+        MDC.put(LogConfigurationConstants.MDC_CLASS_NAME, className);
+        return this;
+    }
+
+    public LoggerAudit setOptProcessKey(String processKey) {
+        ecompLogFieldsHandler.setProcessKey(processKey);
+        return this;
+    }
+
+    public LoggerAudit setOptAlertSeverity(Severity alertSeverity) {
+        ecompLogFieldsHandler.setAlertSeverity(alertSeverity);
+        return this;
+    }
+
+    @Override
+    public LoggerAudit setKeyRequestId(String keyRequestId) {
+        return (LoggerAudit) super.setKeyRequestId(keyRequestId);
+    }
+
+    @Override
+    public LoggerAudit setKeyInvocationId(String keyInvocationId) {
+        ecompLogFieldsHandler.setKeyInvocationId(keyInvocationId);
+        return this;
+    }
+
+    public LoggerAudit setRemoteHost(String remoteHost) {
+        ecompLogFieldsHandler.setRemoteHost(remoteHost);
+        return this;
+    }
+
+    public LoggerAudit setServiceName(String serviceName) {
+        ecompLogFieldsHandler.setServiceName(serviceName);
+        return this;
+    }
+
+    public LoggerAudit setStatusCodeByResponseCode(String responseCode) {
+        String respStatus = Integer.parseInt(responseCode) / 100 == 2 ? ONAPLogConstants.ResponseStatus.COMPLETE.name() : ONAPLogConstants.ResponseStatus.ERROR.name();
+        ecompLogFieldsHandler.setStatusCode(respStatus);
+        return this;
+    }
+
+    public LoggerAudit setStatusCode(String statusCode) {
+        ecompLogFieldsHandler.setStatusCode(statusCode);
+        return this;
+    }
+
+
+    public LoggerAudit setPartnerName(String partnerName) {
+        ecompLogFieldsHandler.setPartnerName(partnerName);
+        return this;
+    }
+
+    public LoggerAudit setResponseCode(EcompLoggerErrorCode responseCode) {
+        ecompLogFieldsHandler.setResponseCode(responseCode.getErrorCode());
+        return this;
+    }
+
+    public LoggerAudit setResponseDesc(String responseDesc) {
+        ecompLogFieldsHandler.setResponseDesc(responseDesc);
+        return this;
+    }
+
+    public LoggerAudit setOptServiceInstanceId(String serviceInstanceId) {
+        ecompLogFieldsHandler.setServiceInstanceId(serviceInstanceId);
+        return this;
+    }
+
+    public String getAuditMessage() {
+        return ecompLogFieldsHandler.getAuditMessage();
+    }
+
+
+    @Override
+    public List<String> getMandatoryFields() {
+        return Collections.unmodifiableList(mandatoryFields);
+    }
+
+    @Override
+    public LoggerAudit clear() {
+        super.clear();
+        ecompLogFieldsHandler.setServerFQDNInternally();
+        ecompLogFieldsHandler.setServerIPAddressInternally();
+        return this;
+    }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerBase.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerBase.java
new file mode 100644
index 0000000..5b2bfad
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerBase.java
@@ -0,0 +1,224 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import com.google.common.annotations.VisibleForTesting;
+import org.apache.commons.lang3.StringUtils;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.api.ILogger;
+import org.openecomp.sdc.common.log.enums.ConstantsLogging;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.LogMarkers;
+import org.openecomp.sdc.common.log.utils.LoggingThreadLocalsHolder;
+import org.slf4j.Logger;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;
+
+public abstract class LoggerBase implements ILogger {
+    private final Logger myLogger;
+    private final Marker myMarker;
+    protected final ILogFieldsHandler ecompLogFieldsHandler;
+    private final static String missingLogFieldsMsg = "mandatory parameters for ECOMP logging, missing fields: %s, original message: %s";
+
+    LoggerBase(ILogFieldsHandler ecompLogFieldsHandler, Marker marker, Logger logger) {
+        this.ecompLogFieldsHandler = ecompLogFieldsHandler;
+        this.myMarker = marker;
+        this.myLogger = logger;
+        setKeyRequestIdIfNotSetYet();
+    }
+
+    public static String generateKeyRequestId() {
+        return UUID.randomUUID().toString();
+    }
+
+    public static String getRequestId(HttpServletRequest httpRequest) {
+        String onapRequestId = httpRequest.getHeader(ONAPLogConstants.Headers.REQUEST_ID);
+        String requestId = httpRequest.getHeader(ConstantsLogging.X_REQUEST_ID);
+        String transactionReId = httpRequest.getHeader(ConstantsLogging.X_TRANSACTION_ID_HEADER);
+        String ecompRequestId = httpRequest.getHeader(ConstantsLogging.X_ECOMP_REQUEST_ID_HEADER);
+        return Arrays.asList(onapRequestId, requestId, transactionReId, ecompRequestId).stream()
+                .filter(id -> !StringUtils.isEmpty(id)).findFirst().orElse(generateKeyRequestId());
+    }
+
+    public static String getPartnerName(HttpServletRequest httpRequest) {
+        String userId = httpRequest.getHeader(ConstantsLogging.USER_ID_HEADER);
+        String onapPartnerName = httpRequest.getHeader(ONAPLogConstants.Headers.PARTNER_NAME);
+        String reqUri = httpRequest.getHeader(ConstantsLogging.USER_AGENT_HEADER);
+        return Arrays.asList(userId, onapPartnerName, reqUri).stream()
+                .filter(pn-> !StringUtils.isEmpty(pn)).findFirst().orElse(ConstantsLogging.PartnerName_Unknown);
+    }
+
+    protected void setKeyRequestIdIfNotSetYet() {
+        if (StringUtils.isEmpty(ecompLogFieldsHandler.getKeyRequestId())) {
+            setKeyRequestId(LoggingThreadLocalsHolder.getUuid());
+        }
+    }
+
+    private void validateMandatoryFields(String originMsg) {
+        // this method only checks if the mandatory fields have been initialized
+        String filedNameThatHasNotBeenInitialized = checkMandatoryFieldsExistInMDC();
+
+        if (myLogger.isDebugEnabled() && !"".equalsIgnoreCase(filedNameThatHasNotBeenInitialized)) {
+            myLogger.debug(MarkerFactory.getMarker(LogMarkers.DEBUG_MARKER.text()),
+                    String.format(missingLogFieldsMsg, filedNameThatHasNotBeenInitialized, originMsg));
+        }
+    }
+
+    @VisibleForTesting
+    String checkMandatoryFieldsExistInMDC() {
+        // this method returns a String of uninitialised fields
+        StringBuilder missingFields = new StringBuilder();
+        getMandatoryFields().forEach(field -> {
+            if (ecompLogFieldsHandler.isMDCParamEmpty(field)) {
+                missingFields.append(field).append(" ");
+            }
+        });
+        return missingFields.toString();
+    }
+
+    public abstract List<String> getMandatoryFields();
+
+    protected String convertExceptionStackToString(Exception ex) {
+        StringBuilder stackTrack = new StringBuilder();
+        Arrays.asList(ex.getStackTrace()).forEach(item -> stackTrack.append(item.toString()).append("\n"));
+        return stackTrack.toString();
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message) {
+        log(logLevel, message, (Object) null);
+    }
+
+    @Override
+    public void log(Marker marker, LogLevel logLevel, String message) {
+        log(marker, logLevel, message, (Object) null);
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message, Object...params) {
+        validateMandatoryFields(message);
+
+        switch(logLevel) {
+            case ERROR:
+            case FATAL:  //TODO check how to log "FATAL" word
+                myLogger.error(myMarker, message, params);
+                break;
+            case WARN:
+                myLogger.warn(myMarker, message, params);
+                break;
+            case INFO:
+                myLogger.info(myMarker, message, params);
+                break;
+            case DEBUG:
+                myLogger.debug(myMarker, message, params);
+                break;
+            case TRACE:
+                myLogger.trace(myMarker, message, params);
+                break;
+            default:
+                break;
+        }
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message, Throwable throwable) {
+        validateMandatoryFields(message);
+
+        switch(logLevel) {
+            case ERROR:
+            case FATAL:  //TODO check how to log "FATAL" word
+                myLogger.error(myMarker, createErrorMessage(message, throwable));
+                break;
+            case WARN:
+                myLogger.warn(myMarker, createErrorMessage(message, throwable));
+                break;
+            case INFO:
+                myLogger.info(myMarker, createErrorMessage(message, throwable));
+                break;
+            case DEBUG:
+                myLogger.debug(myMarker, message, throwable);
+                break;
+            case TRACE:
+                myLogger.trace(myMarker, message, throwable);
+                break;
+            default:
+                break;
+        }
+    }
+
+    @Override
+    public void log(Marker marker, LogLevel logLevel, String message, Object...params) {
+        validateMandatoryFields(message);
+
+        switch(logLevel) {
+            case ERROR:
+            case FATAL:  //TODO check how to log "FATAL" word
+                myLogger.error(marker, message, params);
+                break;
+            case WARN:
+                myLogger.warn(marker, message, params);
+                break;
+            case INFO:
+                myLogger.info(marker, message, params);
+                break;
+            case DEBUG:
+                myLogger.debug(marker, message, params);
+                break;
+            case TRACE:
+                myLogger.trace(marker, message, params);
+                break;
+            default:
+                break;
+        }
+    }
+
+    protected String createErrorMessage(String message, Throwable throwable) {
+        return String.format("%s: %s", message, throwable.getLocalizedMessage());
+    }
+
+
+    @Override
+    public ILogger clear() {
+        ecompLogFieldsHandler.clear();
+        return this;
+    }
+
+    @Override
+    public ILogger setKeyRequestId(String keyRequestId) {
+        ecompLogFieldsHandler.setKeyRequestId(keyRequestId);
+        return this;
+    }
+
+
+    @Override
+    public ILogger setKeyInvocationId(String keyInvocationId) {
+        ecompLogFieldsHandler.setKeyInvocationId(keyInvocationId);
+        return this;
+    }
+
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerDebug.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerDebug.java
new file mode 100644
index 0000000..dc8c4b4
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerDebug.java
@@ -0,0 +1,75 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.LogMarkers;
+import org.slf4j.Logger;
+import org.slf4j.MarkerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class LoggerDebug extends LoggerBase {
+
+    private static List<String> mandatoryFields = new ArrayList<>(Arrays.asList(ONAPLogConstants.MDCs.REQUEST_ID));
+
+    LoggerDebug(ILogFieldsHandler ecompMdcWrapper, Logger logger) {
+        super(ecompMdcWrapper, MarkerFactory.getMarker(LogMarkers.DEBUG_MARKER.text()), logger);
+    }
+
+    @Override
+    public LoggerDebug clear() {
+        //nothing to clean up
+        return this;
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message, Object...params){
+        setKeyRequestIdIfNotSetYet();
+        super.log(logLevel, message, params);
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message, Throwable throwable){
+        setKeyRequestIdIfNotSetYet();
+        super.log(logLevel, message, throwable);
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message){
+        setKeyRequestIdIfNotSetYet();
+        super.log(logLevel, message);
+    }
+
+    @Override
+    public LoggerDebug startTimer() {
+        return this;
+    }
+
+    @Override
+    public List<String> getMandatoryFields() {
+        return mandatoryFields;
+    }
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerError.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerError.java
new file mode 100644
index 0000000..a38f16d
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerError.java
@@ -0,0 +1,163 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.apache.commons.lang3.StringUtils;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.api.LogConfigurationConstants;
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.enums.EcompErrorSeverity;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.LogMarkers;
+import org.slf4j.Logger;
+import org.slf4j.MarkerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class LoggerError extends LoggerBase {
+    private static ArrayList<String> mandatoryFields = new ArrayList<>(Arrays.asList(
+            ONAPLogConstants.MDCs.REQUEST_ID,
+            ONAPLogConstants.MDCs.SERVICE_NAME,
+            LogConfigurationConstants.MDC_ERROR_CATEGORY,
+            LogConfigurationConstants.MDC_ERROR_CODE));
+
+    public static final String defaultServiceName = "SDC catalog";
+
+    LoggerError(ILogFieldsHandler ecompMdcWrapper, Logger logger) {
+        super(ecompMdcWrapper, MarkerFactory.getMarker(LogMarkers.ERROR_MARKER.text()), logger);
+    }
+
+    @Override
+    public List<String> getMandatoryFields() {
+        return Collections.unmodifiableList(mandatoryFields);
+    }
+
+    @Override
+    public LoggerError setKeyRequestId(String keyRequestId) {
+        return (LoggerError) super.setKeyRequestId(keyRequestId);
+    }
+
+    @Override
+    public LoggerError startTimer() {
+        return this;
+    }
+
+    @Override
+    public LoggerError clear() {
+        ecompLogFieldsHandler.removeErrorCategory();
+        ecompLogFieldsHandler.removeErrorDescription();
+        ecompLogFieldsHandler.removeErrorCode();
+        return this;
+    }
+
+    public void log(LogLevel logLevel,
+                    EcompLoggerErrorCode errorCodeEnum,
+                    String serviceName,
+                    String targetEntity,
+                    String message, Object...params) {
+        fillFieldsBeforeLogging(logLevel, errorCodeEnum, serviceName, targetEntity, null);
+        super.log(logLevel, message, params);
+    }
+
+    public void log(LogLevel logLevel,
+                    EcompLoggerErrorCode errorCodeEnum,
+                    String serviceName,
+                    ErrorLogOptionalData errorLogOptionalData,
+                    String description,
+                    Object...params) {
+        fillFieldsBeforeLogging(logLevel, errorCodeEnum, serviceName,
+                errorLogOptionalData.getTargetEntity(), errorLogOptionalData.getTargetServiceName());
+        super.log(logLevel, description, params);
+    }
+
+    private void fillFieldsBeforeLogging(LogLevel logLevel, EcompLoggerErrorCode errorCodeEnum, String serviceName, String targetEntity, String targetServiceName) {
+        clear();
+        ecompLogFieldsHandler.setErrorCode(errorCodeEnum.getErrorCode());
+        ecompLogFieldsHandler.setErrorCategory(logLevel.name());
+
+        ecompLogFieldsHandler.setTargetEntity(targetEntity);
+        ecompLogFieldsHandler.setTargetServiceName(targetServiceName);
+
+        if (StringUtils.isEmpty(ecompLogFieldsHandler.getServiceName())) {
+            ecompLogFieldsHandler.setServiceName(serviceName);
+        }
+
+        setKeyRequestIdIfNotSetYet();
+    }
+
+    public void log(EcompErrorSeverity errorSeverity,
+                    EcompLoggerErrorCode errorCodeEnum,
+                    String serviceName,
+                    String targetEntity,
+                    String message, Object... params) {
+        log(convertFromSeverityErrorLevel(errorSeverity), errorCodeEnum, serviceName, targetEntity, message, params);
+    }
+
+    public void log(LogLevel logLevel,
+                    EcompLoggerErrorCode errorCodeEnum,
+                    String serviceName,
+                    String message, Object...params) {
+        log(logLevel, errorCodeEnum, serviceName, (String)null, message, params);
+    }
+
+    public void log(LogLevel logLevel,
+                    EcompLoggerErrorCode errorCodeEnum,
+                    String serviceName,
+                    String message) {
+        log(logLevel, errorCodeEnum, serviceName, message);
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message, Object...params) {
+        log(logLevel, EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, defaultServiceName, (String)null, message, params);
+    }
+
+    public void log(LogLevel logLevel, String message, Throwable throwable) {
+        log(logLevel, createErrorMessage(message, throwable));
+    }
+
+    public void log(LogLevel logLevel, String message) {
+        log(logLevel, EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, defaultServiceName, (String)null, message);
+    }
+
+    public void logInfo(LogLevel logLevel, String message, Object... params) {
+        log(logLevel, EcompLoggerErrorCode.SUCCESS, defaultServiceName, (String)null, message, params);
+    }
+
+    private LogLevel convertFromSeverityErrorLevel(EcompErrorSeverity severityLevel) {
+        switch(severityLevel) {
+            case INFO:
+                return LogLevel.INFO;
+            case FATAL:
+                return LogLevel.FATAL;
+            case ERROR:
+                return LogLevel.ERROR;
+            case WARN:
+                return LogLevel.WARN;
+        }
+        return LogLevel.ERROR;
+    }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerFactory.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerFactory.java
new file mode 100644
index 0000000..59e2777
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerFactory.java
@@ -0,0 +1,82 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.slf4j.Logger;
+
+/**
+ * Created by dd4296 on 12/26/2017.
+ * this factory helps decouple the classes for Stopwatch and LogFieldsMdcHandler from
+ * the EcompLogger classes
+ */
+public class LoggerFactory {
+
+    private LoggerFactory() {
+    }
+
+    @SuppressWarnings("unchecked")
+    public static <T, V> V getLogger(Class<T> type, Logger logger) {
+
+        if (type.getName().equals(LoggerAudit.class.getName())) {
+            return (V) new LoggerAudit(new LogFieldsMdcHandler(), logger);
+        }
+
+        if (type.getName().equals(LoggerDebug.class.getName())) {
+            return (V) new LoggerDebug(new LogFieldsMdcHandler(), logger);
+        }
+
+        if (type.getName().equals(LoggerMetric.class.getName())) {
+            return (V) new LoggerMetric(new LogFieldsMdcHandler(), logger);
+        }
+
+        if (type.getName().equals(LoggerError.class.getName())) {
+            return (V) new LoggerError(new LogFieldsMdcHandler(), logger);
+        }
+
+        return null;
+    }
+
+    @SuppressWarnings("unchecked")
+    public static <T, V> V getMdcLogger(Class<T> type, Logger logger) {
+
+        if (type.getName().equals(LoggerAudit.class.getName())) {
+            return (V) new LoggerAudit(LogFieldsMdcHandler.getInstance(), logger);
+        }
+
+        if (type.getName().equals(LoggerDebug.class.getName())) {
+            return (V) new LoggerDebug(LogFieldsMdcHandler.getInstance(), logger);
+        }
+
+        if (type.getName().equals(LoggerMetric.class.getName())) {
+            return (V) new LoggerMetric(LogFieldsMdcHandler.getInstance(), logger);
+        }
+
+        if (type.getName().equals(LoggerError.class.getName())) {
+            return (V) new LoggerError(LogFieldsMdcHandler.getInstance(), logger);
+        }
+
+        if (type.getName().equals(LoggerSupportability.class.getName())) {
+            return (V) new LoggerSupportability(LogFieldsMdcHandler.getInstance(), logger);
+        }
+
+        return null;
+    }
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerMetric.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerMetric.java
new file mode 100644
index 0000000..3dbcf1d
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerMetric.java
@@ -0,0 +1,193 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.LogMarkers;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.slf4j.Logger;
+import org.slf4j.MarkerFactory;
+
+import javax.ws.rs.core.Response;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.MDCs.*;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.*;
+
+
+public class LoggerMetric extends LoggerBase {
+    private static List<String> mandatoryFields = new ArrayList<>(Arrays.asList(
+            INVOKE_TIMESTAMP,
+            MDC_END_TIMESTAMP,
+            REQUEST_ID,
+            SERVICE_NAME,
+            PARTNER_NAME,
+            RESPONSE_CODE,
+            MDC_SERVICE_INSTANCE_ID,
+            RESPONSE_DESCRIPTION,
+            MDC_ELAPSED_TIME,
+            TARGET_ENTITY,
+            MDC_SERVER_IP_ADDRESS,
+            SERVER_FQDN));
+
+    private static List<String> optionalFields = new ArrayList<>(Arrays.asList(
+            MDC_TARGET_VIRTUAL_ENTITY,
+            TARGET_ENTITY,
+            TARGET_SERVICE_NAME,
+            RESPONSE_STATUS_CODE,
+            INSTANCE_UUID,
+            RESPONSE_SEVERITY,
+            MDC_REMOTE_HOST,
+            CLIENT_IP_ADDRESS,
+            MDC_CLASS_NAME,
+            MDC_PROCESS_KEY,
+            MDC_OPT_FIELD1,
+            MDC_OPT_FIELD2,
+            MDC_OPT_FIELD3,
+            MDC_OPT_FIELD4));
+
+    LoggerMetric(ILogFieldsHandler ecompMdcWrapper, Logger logger) {
+        super(ecompMdcWrapper, MarkerFactory.getMarker(LogMarkers.METRIC_MARKER.text()), logger);
+        //put the remote host and FQDN values from another thread if they are set
+        ecompMdcWrapper.setServerIPAddressInternally();
+        ecompMdcWrapper.setServerFQDNInternally();
+    }
+
+    public void log(Response.StatusType statusInfo,
+                    String className,
+                    LogLevel logLevel,
+                    Severity securityLevel,
+                    String message) {
+        log(statusInfo,className, logLevel, securityLevel, message);
+    }
+
+    @Override
+    public void log(LogLevel logLevel, String message) {
+        setKeyRequestIdIfNotSetYet();
+        log(logLevel, message, (Object) null);
+    }
+
+    @Override
+    public LoggerMetric startTimer() {
+        clear();
+        ecompLogFieldsHandler.startMetricTimer();
+        return this;
+    }
+
+    public LoggerMetric stopTimer() {
+        ecompLogFieldsHandler.stopMetricTimer();
+        return this;
+    }
+
+    @Override
+    public LoggerMetric setKeyRequestId(String keyRequestId) {
+        return (LoggerMetric) super.setKeyRequestId(keyRequestId);
+    }
+
+    @Override
+    public List<String> getMandatoryFields() {
+        return mandatoryFields;
+    }
+
+    @Override
+    public LoggerMetric clear() {
+        ecompLogFieldsHandler.removeTargetEntity();
+        ecompLogFieldsHandler.removeTargetServiceName();
+        ecompLogFieldsHandler.removeResponseCode();
+        ecompLogFieldsHandler.removeResponseDesc();
+        ecompLogFieldsHandler.removeStatusCode();
+        return this;
+    }
+
+
+    public LoggerMetric setInstanceUUID(String instanceUUID) {
+        ecompLogFieldsHandler.setInstanceUUID(instanceUUID);
+        return this;
+    }
+
+
+    public LoggerMetric setOutgoingInvocationId(String out_invocationId) {
+        ecompLogFieldsHandler.setOutgoingInvocationId(out_invocationId);
+        return this;
+    }
+
+    public LoggerMetric setRemoteHost(String remoteHost) {
+        ecompLogFieldsHandler.setRemoteHost(remoteHost);
+        return this;
+    }
+
+    public LoggerMetric setServiceName(String serviceName) {
+        ecompLogFieldsHandler.setServiceName(serviceName);
+        return this;
+    }
+
+    public LoggerMetric setStatusCode(String statusCode) {
+        ecompLogFieldsHandler.setStatusCode(statusCode);
+        return this;
+    }
+
+    public LoggerMetric setPartnerName(String partnerName) {
+        ecompLogFieldsHandler.setPartnerName(partnerName);
+        return this;
+    }
+
+    public LoggerMetric setResponseCode(int responseCode) {
+        ecompLogFieldsHandler.setResponseCode(responseCode);
+        return this;
+    }
+
+    public LoggerMetric setResponseDesc(String responseDesc) {
+        ecompLogFieldsHandler.setResponseDesc(responseDesc);
+        return this;
+    }
+
+    public LoggerMetric setOptServiceInstanceId(String serviceInstanceId) {
+        ecompLogFieldsHandler.setServiceInstanceId(serviceInstanceId);
+        return this;
+    }
+
+    public LoggerMetric setOptClassName(String className) {
+        ecompLogFieldsHandler.setClassName(className);
+        return this;
+    }
+
+    public LoggerMetric setTargetEntity(String targetEntity) {
+        ecompLogFieldsHandler.setTargetEntity(targetEntity);
+        return this;
+    }
+
+    public LoggerMetric setTargetServiceName(String targetServiceName) {
+        ecompLogFieldsHandler.setTargetServiceName(targetServiceName);
+        return this;
+    }
+
+    public LoggerMetric setTargetVirtualEntity(String targetVirtualEntity) {
+        ecompLogFieldsHandler.setTargetVirtualEntity(targetVirtualEntity);
+        return this;
+    }
+
+
+
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerSupportability.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerSupportability.java
new file mode 100644
index 0000000..849add3
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/elements/LoggerSupportability.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.openecomp.sdc.common.log.api.LogConfigurationConstants;
+import org.openecomp.sdc.common.log.api.ILogFieldsHandler;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.LogMarkers;
+import org.openecomp.sdc.common.log.enums.LoggerSupportabilityActions;
+import org.openecomp.sdc.common.log.enums.StatusCode;
+import org.slf4j.Logger;
+import org.slf4j.MarkerFactory;
+
+import java.util.*;
+
+public class LoggerSupportability extends LoggerBase {
+
+  public LoggerSupportability(ILogFieldsHandler ecompLogFieldsHandler, Logger logger) {
+    super(ecompLogFieldsHandler, MarkerFactory.getMarker(LogMarkers.SUPPORTABILITY_MARKER.text()),
+        logger);
+  }
+
+  public static LoggerSupportability getLogger(String className) {
+    return LoggerFactory.getMdcLogger(LoggerSupportability.class,
+        org.slf4j.LoggerFactory.getLogger(className));
+  }
+
+
+  public void log(LoggerSupportabilityActions action, Map<String,String> componentMetaData,StatusCode statusCode, String message, Object...params) {
+    fillFieldsBeforeLogging(action,componentMetaData,statusCode);
+    super.log(LogLevel.INFO,message, params);
+  }
+
+  public void log(LoggerSupportabilityActions action, StatusCode statusCode, String message, Object...params) {
+    log(action, null, statusCode, message, params);
+  }
+
+  private static List<String> mandatoryFields = new ArrayList<>(Arrays.asList(
+      LogConfigurationConstants.MDC_SUPPORTABLITY_ACTION,
+      LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_UUID,
+      LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_VERSION,
+      LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_NAME,
+      LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_UUID,
+      LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_VERSION,
+      LogConfigurationConstants.MDC_SUPPORTABLITY_STATUS_CODE));
+
+  private void fillFieldsBeforeLogging(LoggerSupportabilityActions action, Map<String,String> componentMetaData,StatusCode statusCode) {
+    clear();
+    if (componentMetaData!=null){
+      ecompLogFieldsHandler.setSupportablityCsarUUID(componentMetaData.get(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_UUID));
+      ecompLogFieldsHandler.setSupportablityCsarVersion(componentMetaData.get(LogConfigurationConstants.MDC_SUPPORTABLITY_CSAR_VERSION));
+      ecompLogFieldsHandler.setSupportablityComponentName(componentMetaData.get(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_NAME));
+      ecompLogFieldsHandler.setSupportablityComponentUUID(componentMetaData.get(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_UUID));
+      ecompLogFieldsHandler.setSupportablityComponentVersion(componentMetaData.get(LogConfigurationConstants.MDC_SUPPORTABLITY_COMPONENT_VERSION));
+    }
+    ecompLogFieldsHandler.setSupportablityAction(action.getName());
+    ecompLogFieldsHandler.setSupportablityStatusCode(statusCode.getStatusCodeEnum());
+    }
+
+  @Override
+  public LoggerSupportability  clear(){
+    LogFieldsMdcHandler.getInstance().removeSupportablityAction();
+    LogFieldsMdcHandler.getInstance().removeSupportablityCsarUUID();
+    LogFieldsMdcHandler.getInstance().removeSupportablityCsarVersion();
+    LogFieldsMdcHandler.getInstance().removeSupportablityComponentName();
+    LogFieldsMdcHandler.getInstance().removeSupportablityComponentUUID();
+    LogFieldsMdcHandler.getInstance().removeSupportablityComponentVersion();
+    LogFieldsMdcHandler.getInstance().removeSupportablityStatusCode();
+    return this;
+  }
+
+
+  @Override
+  public List<String> getMandatoryFields() {
+    return Collections.unmodifiableList(mandatoryFields);
+  }
+
+  @Override
+  public LoggerSupportability startTimer() {
+    return this;
+  }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/ConstantsLogging.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/ConstantsLogging.java
new file mode 100644
index 0000000..34606dc
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/ConstantsLogging.java
@@ -0,0 +1,33 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public final class ConstantsLogging {
+    public static final String USER_ID_HEADER = "USER_ID";
+    public static final String USER_AGENT_HEADER = "User-Agent";
+    public static final String PartnerName_Unknown = "UNKNOWN";
+    public static final String X_ECOMP_REQUEST_ID_HEADER = "X-ECOMP-RequestID";
+    public static final String X_TRANSACTION_ID_HEADER = "X-TransactionId";
+    public static final String X_REQUEST_ID = "X-RequestID";
+    public static final String X_ECOMP_INSTANCE_ID_HEADER = "X-ECOMP-InstanceID";
+    public static final String X_ECOMP_SERVICE_ID_HEADER = "X-ECOMP-ServiceID";
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/EcompErrorSeverity.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/EcompErrorSeverity.java
new file mode 100644
index 0000000..4d21d8c
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/EcompErrorSeverity.java
@@ -0,0 +1,25 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public enum EcompErrorSeverity {
+    INFO, WARN, ERROR, FATAL;
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/EcompLoggerErrorCode.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/EcompLoggerErrorCode.java
new file mode 100644
index 0000000..db174b4
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/EcompLoggerErrorCode.java
@@ -0,0 +1,67 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+import java.util.Arrays;
+import java.util.Optional;
+
+/**
+ * Created by dd4296 on 12/26/2017.
+ */
+public enum EcompLoggerErrorCode {
+    SUCCESS(0),
+    PERMISSION_ERROR(100),
+    AVAILABILITY_TIMEOUTS_ERROR(200),
+    DATA_ERROR(300),
+    SCHEMA_ERROR(400),
+    BUSINESS_PROCESS_ERROR(500),
+    UNKNOWN_ERROR(900);
+
+    private int errorCode;
+
+    EcompLoggerErrorCode(int errorCode) {
+        this.errorCode = errorCode;
+    }
+
+    public int getErrorCode() {
+        return errorCode;
+    }
+
+    public static EcompLoggerErrorCode getByValue(String ecompErrorCode) {
+        String errorPrefix = parseCode(ecompErrorCode);
+        Optional<EcompLoggerErrorCode> optionalCode = Arrays.stream(values()).filter(v->isCode(v, errorPrefix)).findFirst();
+        return optionalCode.orElse(UNKNOWN_ERROR);
+    }
+
+    private static boolean isCode(EcompLoggerErrorCode ecompLoggerErrorCode, String errorPrefix) {
+        return String.valueOf(ecompLoggerErrorCode.getErrorCode()).contains(errorPrefix);
+    }
+
+    private static String parseCode(String errorCode) {
+        try {
+            return errorCode.substring("E_".length(), 3);
+        } catch (StringIndexOutOfBoundsException ex) {
+            return UNKNOWN_ERROR.name();
+        }
+    }
+
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LogLevel.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LogLevel.java
new file mode 100644
index 0000000..aaee751
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LogLevel.java
@@ -0,0 +1,30 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public enum LogLevel {
+    INFO,
+    WARN,
+    DEBUG,
+    TRACE,
+    ERROR,
+    FATAL
+}
+
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LogMarkers.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LogMarkers.java
new file mode 100644
index 0000000..7b12ded
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LogMarkers.java
@@ -0,0 +1,39 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public enum LogMarkers {
+    DEBUG_MARKER("DEBUG_MARKER"),
+    ERROR_MARKER("ERROR_MARKER"),
+    METRIC_MARKER("METRICS"),
+    SUPPORTABILITY_MARKER("SUPPORTABILITY_MARKER");
+
+    private String text;
+
+    LogMarkers (String text){
+        this.text = text;
+    }
+
+    public String text(){
+        return text;
+    }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LoggerSupportabilityActions.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LoggerSupportabilityActions.java
new file mode 100644
index 0000000..d831700
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/LoggerSupportabilityActions.java
@@ -0,0 +1,85 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public enum LoggerSupportabilityActions {
+  IMPORT_CSAR("CREATE RESOURCE FROM CSAR"),
+  CREATE_RESOURCE_FROM_YAML("CREATE RESOURCE FROM YAML"),
+  CREATE_RI_AND_RELATIONS("CREATE RI AND RELATIONS"),
+  CREATE_NODES_AND_CVFCS("ADD NODES AND CVFCS"),
+  CREATE_ARTIFACTS("ADD ARTIFACTS"),
+  CREATE_SERVICE("CREATE SERVICE"),
+  CREATE_RESOURCE("CREATE RESOURCE"),
+  CREATE_PROPERTIES("ADD PROPERTIES"),
+  CREATE_INPUTS("ADD INPUTS"),
+  CREATE_POLICIES("ADD POLICIES"),
+  CREATE_RELATIONS("ADD RELATIONS"),
+  CREATE_CAPABILITY_REQUIREMENTS("CREATE CAPABILITY REQUIREMENTS"),
+  MERGE("MERGE"),
+  PROPERTY_ASSIGNMENT("PROPERTY ASSIGNMENT"),
+  CREATE_INSTANCE("CREATE INSTANCE"),
+  CREATE_RELATION("ADD RELATION"),
+  CREATE_GROUP_POLICY("ADD GROUP POLICY"),
+  CREATE_GROUPS("ADD GROUPS"),
+  UPDATE_PROPERTY_IN_GROUP_POLICY("UPDATE PROPERTY IN GROUP POLICY"),
+  UPDATE_CAPABILITY("UPDATE CAPABILITY"),
+  PROPERTY("ADD PROPERTY"),
+  UPLOAD_DOWNLOAD_ARTIFACT("UPLOAD/DOWNLOAD ARTIFACT"),
+  LIFECYCLE("LIFECYCLE"),
+  DISTRIBUTION("DISTRIBUTION"),
+  UPDATE_CATALOG("UPDATE CATALOG"),
+  ARCHIVE("ARCHIVE"),
+  TENANT_ISOLATION("TENANT ISOLATION"),
+  DOWNLOAD_ARTIFACTS("DOWNLOAD ARTIFACTS"),
+  UPDATE_HEAT("UPDATE HEAT"),
+  PARAMETERS("PARAMETERS"),
+  CHANGELIFECYCLESTATE("CHANGE LIFECYCLE STATE"),
+  VALIDATE_NAME("VALIDATE COMPONENT NAME"),
+  DELETE_COMPONENT_INSTANCE_ARTIFACT("DELETE COMPONENT INSTANCE ARTIFACT"),
+  DELETE_SERVICE("DELETE SERVICE"),
+  DELETE_RESOURCE("DELETE RESOURCE"),
+  UPDATE_RESOURCE("UPDATE RESOURCE"),
+  UPDATE_COMPONENT_INSTANCE("UPDATE COMPONENT INSTANCE"),
+  DELETE_COMPONENT_INSTANCE("DELETE COMPONENT INSTANCE"),
+  UPDATE_PROPERTIES("UPDATE PROPERTIES"),
+  RESTORE_FROM_ARCHIVE("RESTORE FROM ARCHIVE"),
+  UPDATE_INPUTS("UPDATE INPUTS"),
+  DELETE_INPUTS("DELETE INPUTS"),
+  ASSOCIATE_RI_TO_RI("ASSOCIATE RI TO RI"),
+  UN_ASSOCIATE_RI_TO_RI("UN ASSOCIATE RI TO RI"),
+  UPDATE_ARTIFACT("UPDATE ARTIFACT"),
+  GENERATE_CSAR("GENERATE CSAR"),
+  GENERATE_TOSCA("GENERATE TOSCA"),
+  UPDATE_GROUP_MEMBERS("UPDATE GROUP MEMBERS"),
+  UPDATE_INSTANCE_CAPABILITY_PROPERTY("UPDATE INSTANCE CAPABILITY PROPERTY"),
+  UPDATE_POLICY_TARGET("UPDATE POLICY TARGET"),
+  UPDATE_POLICIES_PROPERTIES("UPDATE POLICIES PROPERTIES");
+  private String name;
+
+  LoggerSupportabilityActions(String name) {
+    this.name = name;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/Severity.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/Severity.java
new file mode 100644
index 0000000..0e90d57
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/Severity.java
@@ -0,0 +1,40 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public enum Severity {
+    OK(0),
+    WARNING(1),
+    CRITICAL(2),
+    DOWN(3),
+    UNREACHABLE(4);
+
+    int severityType;
+
+    Severity(int serveryType) {
+        this.severityType = serveryType;
+    }
+
+    public int getSeverityType() {
+        return severityType;
+    }
+}
+
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/StatusCode.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/StatusCode.java
new file mode 100644
index 0000000..4ed65df
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/enums/StatusCode.java
@@ -0,0 +1,38 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.enums;
+
+public enum StatusCode {
+  ERROR("ERROR"),
+  STARTED("STARTED"),
+  COMPLETE("COMPLETE"),
+  INPROGRESS("INPROGRESS");
+
+  String statusCode;
+
+  StatusCode(String statusCode) {
+    this.statusCode = statusCode;
+  }
+
+  public String getStatusCodeEnum() {
+    return statusCode;
+  }
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/utils/EcompLogErrorCode.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/utils/EcompLogErrorCode.java
new file mode 100644
index 0000000..9c90529
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/utils/EcompLogErrorCode.java
@@ -0,0 +1,42 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.utils;
+
+public enum EcompLogErrorCode {
+    E_399("Internal Invalid Object. Description: %s"),
+    E_210("Connection problem towards U-EB server. Reason: %s");
+
+
+    String description;
+
+    EcompLogErrorCode(String description) {
+        this.description = description;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/utils/LoggingThreadLocalsHolder.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/utils/LoggingThreadLocalsHolder.java
new file mode 100644
index 0000000..3d7a16b
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/utils/LoggingThreadLocalsHolder.java
@@ -0,0 +1,45 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.utils;
+
+
+public class LoggingThreadLocalsHolder {
+	
+	private LoggingThreadLocalsHolder() {
+	}
+
+	private static final ThreadLocal<String> uuidThreadLocal = new ThreadLocal<>();
+
+	public static void setUuid(String uuid) {
+		uuidThreadLocal.set(uuid);
+	}
+
+	public static String getUuid() {
+		return uuidThreadLocal.get();
+	}
+
+
+
+	public static void cleanup() {
+		uuidThreadLocal.remove();
+	}
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/Logger.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/Logger.java
new file mode 100644
index 0000000..9c2bfec
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/Logger.java
@@ -0,0 +1,656 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.wrappers;
+
+import com.google.common.annotations.VisibleForTesting;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.elements.*;
+import org.openecomp.sdc.common.log.enums.EcompErrorSeverity;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.slf4j.Marker;
+
+import java.util.UUID;
+
+
+/**
+ * This class wraps {@link org.slf4j.Logger} object and provides mandatory information required by Ecomp logging rules.
+ * Note: All deprecated methods are supported to be compatible to the legacy code
+ * and have not be used by the new code
+ */
+public class Logger implements org.slf4j.Logger {
+    private final LoggerDebug debug;
+    private final LoggerError error;
+    private final LoggerMetric metric;
+    private final org.slf4j.Logger logger;
+
+    @VisibleForTesting
+    public Logger(org.slf4j.Logger logger) {
+        this.logger = logger;
+        this.debug = LoggerFactory.getMdcLogger(LoggerDebug.class, logger);
+        this.error = LoggerFactory.getMdcLogger(LoggerError.class, logger);
+        this.metric = LoggerFactory.getMdcLogger(LoggerMetric.class, logger);
+
+    }
+
+    private Logger(String className) {
+        this(org.slf4j.LoggerFactory.getLogger(className));
+    }
+
+    public static Logger getLogger(String className) {
+        return new Logger(className);
+    }
+
+    public static Logger getLogger(Class<?> clazz) {
+        return new Logger(clazz.getName());
+    }
+
+
+    public boolean isDebugEnabled() {
+        return logger.isDebugEnabled();
+    }
+
+    @Override
+    public String getName() {
+        return logger.getName();
+    }
+
+    public boolean isTraceEnabled() {
+        return logger.isTraceEnabled();
+    }
+
+    public boolean isErrorEnabled() { return logger.isErrorEnabled(); }
+
+    public boolean isWarnEnabled() { return logger.isWarnEnabled(); }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}  **/
+    public void warn(String msg) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(String msg, Object o) {
+
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, o);
+        }
+    }
+
+    public boolean isInfoEnabled() { return logger.isInfoEnabled(); }
+
+    @Override
+    public void info(String msg) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg);
+        }
+    }
+
+    @Override
+    public void info(String msg, Object o) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, o);
+        }
+    }
+
+    @Override
+    public void info(String msg, Object o, Object o1) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, o, o1);
+        }
+    }
+
+    public void debug(String msg, Object... params) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, params);
+        }
+    }
+
+    public void metric(String msg, Object... params) {
+            metric.log(LogLevel.INFO, msg, params);
+    }
+
+    public void invoke(String remoteHost, String targetEntity, String targetServiceName, String serviceName, String msg, Object... params) {
+
+        String invocationId = UUID.randomUUID().toString();
+        String requestID = UUID.randomUUID().toString();
+
+        metric.startTimer()
+            .stopTimer()
+            .setRemoteHost(remoteHost)
+                .setOutgoingInvocationId(invocationId)
+                .setTargetServiceName(targetServiceName)
+                .setTargetEntity(targetEntity)
+                .setStatusCode(ONAPLogConstants.ResponseStatus.COMPLETE.name())
+                .setKeyRequestId(requestID)
+                .setServiceName(serviceName);
+        metric.log(ONAPLogConstants.Markers.INVOKE, LogLevel.INFO, msg, params);
+    }
+
+    public void invokeReturn(String msg, Object... params) {
+        try {
+            metric.startTimer()
+                    .stopTimer();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        metric.log(ONAPLogConstants.Markers.INVOKE_RETURN, LogLevel.INFO, msg, params);
+    }
+
+    public void invokeSynchronous(String msg, Object... params) {
+        metric.log(ONAPLogConstants.Markers.INVOKE_SYNCHRONOUS, LogLevel.INFO, msg, params);
+    }
+
+    @Override
+    public void debug(String msg, Throwable throwable) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, throwable);
+        }
+    }
+
+    @Override
+    public boolean isDebugEnabled(Marker marker) {
+        return false;
+    }
+
+    @Override
+    public void debug(Marker marker, String msg) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg);
+        }
+    }
+
+    @Override
+    public void debug(Marker marker, String msg, Object o) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, o);
+        }
+    }
+
+    @Override
+    public void debug(Marker marker, String msg, Object o, Object o1) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, o, o1);
+        }
+    }
+
+    @Override
+    public void debug(Marker marker, String msg, Object... objects) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, objects);
+        }
+    }
+
+    @Override
+    public void debug(Marker marker, String msg, Throwable throwable) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, throwable);
+        }
+    }
+
+    public void debug(String message) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, message);
+        }
+    }
+
+    @Override
+    public void debug(String msg, Object o) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, o);
+        }
+    }
+
+    @Override
+    public void debug(String msg, Object o, Object o1) {
+        if (isDebugEnabled()) {
+            debug.log(LogLevel.DEBUG, msg, o, o1);
+        }
+    }
+
+    public void trace(String message, Object... params) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, message, params);
+        }
+    }
+
+    @Override
+    public void trace(String msg, Throwable throwable) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, throwable);
+        }
+    }
+
+    @Override
+    public boolean isTraceEnabled(Marker marker) {
+        return false;
+    }
+
+    @Override
+    public void trace(Marker marker, String msg) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg);
+        }
+    }
+
+    @Override
+    public void trace(Marker marker, String msg, Object o) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, o);
+        }
+    }
+
+    @Override
+    public void trace(Marker marker, String msg, Object o, Object o1) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, o, o1);
+        }
+    }
+
+    @Override
+    public void trace(Marker marker, String msg, Object... objects) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, objects);
+        }
+    }
+
+    @Override
+    public void trace(Marker marker, String msg, Throwable throwable) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, throwable);
+        }
+    }
+
+    public void trace(String msg) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg);
+        }
+    }
+
+    @Override
+    public void trace(String msg, Object o) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, o);
+        }
+    }
+
+    @Override
+    public void trace(String msg, Object o, Object o1) {
+        if (isTraceEnabled()) {
+            debug.log(LogLevel.TRACE, msg, o, o1);
+        }
+    }
+
+    public void info(String msg, Object... params) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, params);
+        }
+    }
+
+    @Override
+    public void info(String msg, Throwable throwable) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, throwable);
+        }
+    }
+
+    @Override
+    public boolean isInfoEnabled(Marker marker) {
+        return false;
+    }
+
+    @Override
+    public void info(Marker marker, String msg) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg);
+        }
+    }
+
+    @Override
+    public void info(Marker marker, String msg, Object o) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, o);
+        }
+    }
+
+    @Override
+    public void info(Marker marker, String msg, Object o, Object o1) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, o, o1);
+        }
+    }
+
+    @Override
+    public void info(Marker marker, String msg, Object... objects) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, objects);
+        }
+    }
+
+    @Override
+    public void info(Marker marker, String msg, Throwable throwable) {
+        if (isInfoEnabled()) {
+            debug.log(LogLevel.INFO, msg, throwable);
+        }
+    }
+
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(String msg, Object... params){
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, params);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(String msg, Object o, Object o1) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, o, o1);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(String msg, Throwable throwable) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, throwable);
+        }
+    }
+
+    @Override
+    public boolean isWarnEnabled(Marker marker) {
+        return false;
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(Marker marker, String msg) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(Marker marker, String msg, Object o) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, o);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(Marker marker, String msg, Object o, Object o1) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, o, o1);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(Marker marker, String msg, Object... objects) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, objects);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #warn(EcompLoggerErrorCode, String, String)}   **/
+    public void warn(Marker marker, String msg, Throwable throwable) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, msg, throwable);
+        }
+    }
+
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(String msg, Object... params){
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, params);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(String msg, Throwable throwable) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, throwable);
+        }
+    }
+
+    @Override
+    public boolean isErrorEnabled(Marker marker) {
+        return false;
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(Marker marker, String msg) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(Marker marker, String msg, Object o) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, o);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(Marker marker, String msg, Object o, Object o1) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, o, o1);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(Marker marker, String msg, Object... params) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, params);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(Marker marker, String msg, Throwable throwable) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, throwable);
+        }
+    }
+
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(String msg){
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(String msg, Object o) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, o);
+        }
+    }
+
+    @Override
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, String)}  **/
+    public void error(String msg, Object o, Object o1) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, msg, o, o1);
+        }
+    }
+
+    /**
+     * Writes out ERROR logging level message to the application error log
+     * @param errorLevel code representing the error severity level
+     * @param serviceName name of the API invoked at the logging component
+     * @param targetEntity name of the ECOMP component or sub-component, or external entity at which the error occurred or null
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void error(EcompErrorSeverity errorLevel,
+                      EcompLoggerErrorCode errorCodeEnum,
+                      String serviceName,
+                      String targetEntity,
+                      String errorDescription, Object...params) {
+        if (isErrorEnabled()) {
+            error.log(errorLevel, errorCodeEnum, serviceName, targetEntity, errorDescription, params);
+        }
+    }
+
+    /**
+     * Writes out ERROR logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param targetEntity name of the ECOMP component or sub-component, or external entity at which the error occurred or null
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    @Deprecated /** Please use method {@link #error(EcompLoggerErrorCode, String, ErrorLogOptionalData, String, Object...)}   **/
+    public void error(EcompLoggerErrorCode errorCodeEnum,
+                      String serviceName,
+                      String targetEntity,
+                      String errorDescription, Object...params) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, errorCodeEnum, serviceName, targetEntity, errorDescription, params);
+        }
+    }
+
+    /* Writes out ERROR logging level message to the application error LOG
+     * @param errorCodeEnum code representing the error condition
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+
+    public void error(EcompLoggerErrorCode errorCodeEnum, String serviceName,
+                      String errorDescription, Object...params) {
+        error(errorCodeEnum, serviceName, (String)null, errorDescription, params);
+    }
+
+    /**
+     * Writes out ERROR logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param errorLogOptionalData elements that contans all relevant data of the error
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void error(EcompLoggerErrorCode errorCodeEnum,
+                      String serviceName,
+                      ErrorLogOptionalData errorLogOptionalData,
+                      String errorDescription,
+                      Object...params) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.ERROR, errorCodeEnum, serviceName, errorLogOptionalData, errorDescription, params);
+        }
+    }
+
+    /**
+     * Writes out WARN logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param targetEntity name of the ECOMP component or sub-component, or external entity at which the error occurred or null
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void warn(EcompLoggerErrorCode errorCodeEnum,
+                      String serviceName,
+                      String targetEntity,
+                      String errorDescription, Object...params) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, errorCodeEnum, serviceName, targetEntity, errorDescription, params);
+        }
+    }
+
+    /**
+     * Writes out WARN logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param errorLogOptionalData elements that contans all relevant data of the error
+     * @param description a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void warn(EcompLoggerErrorCode errorCodeEnum,
+                     String serviceName,
+                     ErrorLogOptionalData errorLogOptionalData,
+                     String description, Object...params) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, errorCodeEnum, serviceName, errorLogOptionalData, description, params);
+        }
+    }
+
+    /**
+     * Writes out WARN logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void warn(EcompLoggerErrorCode errorCodeEnum,
+                     String serviceName,
+                     String errorDescription, Object...params) {
+        if (isWarnEnabled()) {
+            error.log(LogLevel.WARN, errorCodeEnum, serviceName, (String)null, errorDescription, params);
+        }
+    }
+
+    /**
+     * Writes out FATAL logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param targetEntity name of the ECOMP component or sub-component, or external entity at which the error occurred or null
+     * @param errorDescription a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void fatal(EcompLoggerErrorCode errorCodeEnum,
+                      String serviceName,
+                      String targetEntity,
+                      String errorDescription, Object...params) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.FATAL, errorCodeEnum, serviceName, targetEntity, errorDescription, params);
+        }
+    }
+
+    /**
+     * Writes out FATAL logging level message to the application error log
+     * @param errorCodeEnum code representing the error condition
+     * @param serviceName name of the API invoked at the logging component
+     * @param errorLogOptionalData elements that contans all relevant data of the error
+     * @param description a human readable description of the error condition
+     * @param params optional parameters of a given error description
+     */
+    public void fatal(EcompLoggerErrorCode errorCodeEnum, String serviceName,
+                      ErrorLogOptionalData errorLogOptionalData,
+                      String description, Object...params) {
+        if (isErrorEnabled()) {
+            error.log(LogLevel.FATAL, errorCodeEnum, serviceName, errorLogOptionalData, description, params);
+        }
+    }
+}
+
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/LoggerSdcAudit.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/LoggerSdcAudit.java
new file mode 100644
index 0000000..b2db66e
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/LoggerSdcAudit.java
@@ -0,0 +1,177 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.wrappers;
+
+import org.apache.commons.lang3.StringUtils;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.enums.ConstantsLogging;
+import org.openecomp.sdc.common.log.elements.LoggerAudit;
+import org.openecomp.sdc.common.log.elements.LoggerFactory;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.openecomp.sdc.common.log.utils.LoggingThreadLocalsHolder;
+import org.slf4j.MDC;
+import org.slf4j.Marker;
+
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.core.Response;
+import java.util.UUID;
+
+
+/**
+ * Created by dd4296 on 12/19/2017.
+ *
+ * audit log for asdc using the log library
+ * this is adapted for filter classes
+ */
+public class LoggerSdcAudit extends LoggerSdcUtilBase {
+
+    private static String AUDIT_ON = "auditOn";
+    private String className;
+    private final LoggerAudit ecompLoggerAudit;
+
+    public LoggerSdcAudit(Class<?> clazz) {
+        this.className = clazz.getName();
+        ecompLoggerAudit = LoggerFactory.getMdcLogger(LoggerAudit.class, org.slf4j.LoggerFactory.getLogger(clazz));
+    }
+
+    public void startLog(ContainerRequestContext requestContext) {
+        ecompLoggerAudit.clear()
+                .startTimer()
+                .setPartnerName(getPartnerName(
+                        requestContext.getHeaderString("user-agent"),
+                        requestContext.getHeaderString("USER_ID"),
+                        getUrl(requestContext),
+                        requestContext.getHeaderString("X-ONAP-PartnerName")))
+                .setServiceName(getServiceName(requestContext))
+                .setKeyRequestId(LoggingThreadLocalsHolder.getUuid())
+                .setKeyInvocationId(UUID.randomUUID().toString());
+        MDC.put(AUDIT_ON, "true");
+    }
+
+    public void startAuditFetchLog(String partnerName, String serviceName) {
+        ecompLoggerAudit.clear()
+                .startTimer()
+                .setPartnerName(partnerName)
+                .setServiceName(serviceName)
+                .setOptClassName(serviceName);
+        MDC.put(AUDIT_ON, "true");
+    }
+
+    public static boolean isFlowBeingTakenCare() {
+        String auditOn = MDC.get(AUDIT_ON);
+        return !StringUtils.isEmpty(auditOn) && "true".equals(auditOn);
+    }
+
+    //this function clears the MDC data that relevant for this class
+    public void clearMyData(){
+        ecompLoggerAudit.clear();
+    }
+
+    public void logExit(String remoteAddress,
+                        ContainerRequestContext requestContext,
+                        Response.StatusType statusInfo,
+                        LogLevel logLevel,
+                        Severity securityLevel,
+                        String message,
+                        Marker marker) {
+
+        try {
+
+            String msg = ecompLoggerAudit.getAuditMessage() == null ?
+                    message : ecompLoggerAudit.getAuditMessage();
+            ecompLoggerAudit.stopTimer()
+                    .setRemoteHost(remoteAddress)
+                    .setResponseCode(convertHttpCodeToErrorCode(statusInfo.getStatusCode()))
+                    .setStatusCodeByResponseCode(Integer.toString(statusInfo.getStatusCode()))
+                    .setResponseDesc(statusInfo.getReasonPhrase())
+                    .setInstanceUUID(requestContext.getHeaderString(ConstantsLogging.X_ECOMP_INSTANCE_ID_HEADER))
+                    .setOptServiceInstanceId(requestContext.getHeaderString(ConstantsLogging.X_ECOMP_SERVICE_ID_HEADER))
+                    .setOptClassName(className)
+                    .setOptAlertSeverity(securityLevel)
+                    .log(marker, logLevel, msg);
+        }
+        catch (Exception e) {
+            log.warn("Failed to write to Audit Log. Original Message: {}", message, e);
+        }
+        finally {
+            MDC.put(AUDIT_ON,"false");
+        }
+    }
+
+    public void logEntry(String remoteAddress,
+                          ContainerRequestContext requestContext,
+                          LogLevel logLevel,
+                          Severity securityLevel,
+                          String message,
+                          Marker marker) {
+
+        try {
+
+            String msg = ecompLoggerAudit.getAuditMessage() == null ?
+                    message : ecompLoggerAudit.getAuditMessage();
+            ecompLoggerAudit.stopTimer()
+                    .setRemoteHost(remoteAddress)
+                    .setResponseCode(EcompLoggerErrorCode.SUCCESS)
+                    .setStatusCode(ONAPLogConstants.ResponseStatus.INPROGRESS.name())
+                    .setResponseDesc("")
+                    .setInstanceUUID(requestContext.getHeaderString(ConstantsLogging.X_ECOMP_INSTANCE_ID_HEADER))
+                    .setOptServiceInstanceId(requestContext.getHeaderString(ConstantsLogging.X_ECOMP_SERVICE_ID_HEADER))
+                    .setOptClassName(className)
+                    .setOptAlertSeverity(securityLevel)
+                    .log(marker, logLevel, msg);
+        }
+        catch (Exception e) {
+            log.warn("Failed to write to Audit Log. Original Message: {}", message, e);
+        }
+        finally {
+            MDC.put(AUDIT_ON,"false");
+        }
+    }
+
+    public void logEntry(LogLevel logLevel,
+                         Severity securityLevel,
+                         String message,
+                         Marker marker,
+                         String requestId) {
+
+        try {
+
+            String msg = ecompLoggerAudit.getAuditMessage() == null ?
+                    message : ecompLoggerAudit.getAuditMessage();
+            ecompLoggerAudit.stopTimer()
+                    .setKeyRequestId(requestId)
+                    .setResponseCode(EcompLoggerErrorCode.SUCCESS)
+                    .setStatusCode(ONAPLogConstants.ResponseStatus.COMPLETE.name())
+                    .setResponseDesc("")
+                    .setOptAlertSeverity(securityLevel)
+                    .log(marker, logLevel, msg);
+        }
+        catch (Exception e) {
+            log.warn("Failed to write to Audit Log. Original Message: {}", message, e);
+        }
+        finally {
+            MDC.put(AUDIT_ON,"false");
+        }
+    }
+
+}
diff --git a/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/LoggerSdcUtilBase.java b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/LoggerSdcUtilBase.java
new file mode 100644
index 0000000..cec429a
--- /dev/null
+++ b/common-app-logging/src/main/java/org/openecomp/sdc/common/log/wrappers/LoggerSdcUtilBase.java
@@ -0,0 +1,204 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.wrappers;
+
+import org.apache.commons.lang3.StringUtils;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.ws.rs.container.ContainerRequestContext;
+import java.util.List;
+import java.util.StringTokenizer;
+
+import static java.net.HttpURLConnection.*;
+
+public class LoggerSdcUtilBase {
+
+    protected static Logger log = LoggerFactory.getLogger(LoggerSdcUtilBase.class.getName());
+
+    String getRequestIDfromHeaders(List<Object> requestHeader) {
+        // this method gets list of type object.
+        // toString method returns the RequestId with brackets.
+        String requestHeaderString = requestHeader.toString();
+        return requestHeaderString.replace("[","").replace("]","");
+    }
+
+
+
+    // this method translates http error code to ECOMP Logger Error code
+    // this is a naive translation and is not a result of any documented format ECOMP specification
+    protected EcompLoggerErrorCode convertHttpCodeToErrorCode(int httpResponseCode) {
+        if (isSuccessError(httpResponseCode)) {
+            return EcompLoggerErrorCode.SUCCESS;
+        }
+
+        if (isSchemaError(httpResponseCode)) {
+            return EcompLoggerErrorCode.SCHEMA_ERROR;
+        }
+        if (isDataError(httpResponseCode)) {
+            return EcompLoggerErrorCode.DATA_ERROR;
+        }
+        if (isPermissionsError(httpResponseCode)) {
+            return EcompLoggerErrorCode.PERMISSION_ERROR;
+        }
+        if (isTimeoutOrAvailabilityError(httpResponseCode)) {
+            return EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR;
+        }
+        if (isBusinessProcessError(httpResponseCode)) {
+            return EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR;
+        }
+        return EcompLoggerErrorCode.UNKNOWN_ERROR;
+    }
+
+    private boolean isTimeoutOrAvailabilityError(int httpResponseCode) {
+
+        switch (httpResponseCode) {
+            case HTTP_BAD_REQUEST:
+            case HTTP_UNAUTHORIZED:
+            case HTTP_NOT_FOUND:
+            case HTTP_CLIENT_TIMEOUT:
+            case HTTP_GONE:
+                return true;
+            default:
+                return false;
+        }
+
+    }
+
+    private boolean isPermissionsError(int httpResponseCode) {
+
+        switch (httpResponseCode) {
+            case HTTP_PAYMENT_REQUIRED:
+            case HTTP_FORBIDDEN:
+            case HTTP_BAD_METHOD:
+            case HTTP_PROXY_AUTH:
+                return true;
+            default: return false;
+        }
+    }
+
+    private boolean isDataError(int httpResponseCode) {
+
+        switch (httpResponseCode) {
+            case HTTP_NOT_ACCEPTABLE:
+            case HTTP_LENGTH_REQUIRED:
+            case HTTP_PRECON_FAILED:
+            case HTTP_REQ_TOO_LONG:
+            case HTTP_ENTITY_TOO_LARGE:
+            case HTTP_UNSUPPORTED_TYPE:
+                return true;
+            default: return false;
+        }
+    }
+
+    private boolean isSchemaError(int httpResponseCode) {
+        return HTTP_CONFLICT == httpResponseCode;
+    }
+
+    private boolean isSuccessError(int httpResponseCode) {
+        return httpResponseCode < 399;
+    }
+
+    private boolean isBusinessProcessError(int httpResponseCode) {
+        return httpResponseCode > 499;
+    }
+
+    protected String getPartnerName(String userAgent, String userId, String url, String xOnapPartnerName) {
+
+        //On called side (receiver) If the API call is authenticated, then log the userid/mechid (fully qualified if that is what was provided)
+        if (isFound(userId)) {
+            return userId;
+        }
+
+        String urlUser = getUserIdFromUrl(url);
+        if (isFound(urlUser)) {
+            return urlUser;
+        }
+
+        //Otherwise, if X-ONAP-PartnerName was provided, then log that
+        if (isFound(xOnapPartnerName)){
+            return xOnapPartnerName;
+        }
+
+        //Otherwise, for an HTTP API call, log the part of the URI specifying the agent that the caller used to make the call
+        String userAgentName = getUserIdFromUserAgent(userAgent);
+        if (isFound(userAgentName)) {
+            return userAgentName;
+        }
+
+        return "UNKNOWN";
+    }
+
+    private String getUserIdFromUserAgent(String userAgent) {
+        if (userAgent != null && userAgent.length() > 0) {
+            if (userAgent.toLowerCase().contains("firefox")) {
+                return "fireFox_FE";
+            }
+
+            if (userAgent.toLowerCase().contains("msie")) {
+                return "explorer_FE";
+            }
+
+            if (userAgent.toLowerCase().contains("chrome")) {
+                return "chrome_FE";
+            }
+
+            return userAgent;
+        }
+        return null;
+    }
+
+    private String getUserIdFromUrl(String url) {
+        if (url != null && url.toLowerCase().contains("user")) {
+            StringTokenizer st = new StringTokenizer(url, "/");
+            while (st.hasMoreElements()) {
+                if ("user".equalsIgnoreCase(st.nextToken())) {
+                    return st.nextToken();
+                }
+            }
+        }
+        return null;
+    }
+
+    protected String getUrl(ContainerRequestContext requestContext) {
+        String url = "";
+
+        try {
+            if (requestContext.getUriInfo() != null && requestContext.getUriInfo().getRequestUri() != null) {
+                url = requestContext.getUriInfo().getRequestUri().toURL().toString();
+            }
+        } catch (Exception ex) {
+            log.error("failed to get url from request context ", ex);
+        }
+
+        return url;
+    }
+
+    protected String getServiceName(ContainerRequestContext requestContext) {
+        return (requestContext.getUriInfo().getRequestUri().toString())
+                .replace(requestContext.getUriInfo().getBaseUri().toString(), "/");
+    }
+
+    private boolean isFound(String value) {
+        return  (StringUtils.isNotEmpty(value));
+    }
+}
\ No newline at end of file
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LogFieldsMdcHandlerTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LogFieldsMdcHandlerTest.java
new file mode 100644
index 0000000..1634115
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LogFieldsMdcHandlerTest.java
@@ -0,0 +1,100 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.slf4j.MDC;
+
+import static org.junit.Assert.*;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.*;
+
+public class LogFieldsMdcHandlerTest {
+
+	private LogFieldsMdcHandler ecompMdcWrapper;
+
+	@Before
+	public void init(){
+		ecompMdcWrapper = new LogFieldsMdcHandler();
+		ecompMdcWrapper.clear();
+		MDC.clear();
+	}
+
+	@Test
+	public void isMDCParamEmpty_shouldReturnTrue_onNonNullValueInMDC(){
+		MDC.put("Key","value1");
+		assertFalse(ecompMdcWrapper.isMDCParamEmpty("Key"));
+	}
+	@Test
+	public void isMDCParamEmpty_shouldReturnFalse_onEmptyStringInMDC(){
+		MDC.put("Key","");
+		assertTrue(ecompMdcWrapper.isMDCParamEmpty("Key"));
+	}
+
+	@Test
+	public void isMDCParamEmpty_shouldReturnFalse_onNullValueInMDC(){
+		MDC.put("Key",null);
+		assertTrue(ecompMdcWrapper.isMDCParamEmpty("Key"));
+	}
+
+	@Test
+	public void startTimer_shouldFilecompMdcWrappereginTimestampField(){
+		ecompMdcWrapper.startMetricTimer();
+		assertFalse(ecompMdcWrapper.isMDCParamEmpty(ONAPLogConstants.MDCs.INVOKE_TIMESTAMP));
+	}
+
+	@Test
+	public void stopTimer_shouldFillEndTimestampField_ifStartTimerWasCalledPreviously(){
+		ecompMdcWrapper.startAuditTimer();
+		ecompMdcWrapper.stopAuditTimer();
+		assertFalse(ecompMdcWrapper.isMDCParamEmpty(MDC_END_TIMESTAMP));
+	}
+
+	@Test
+	public void clear_shouldRemoveAllMandatoryAndOptionalFields_And_OnlyThem(){
+		ecompMdcWrapper.setClassName("class1");
+		ecompMdcWrapper.setPartnerName("partner1");
+		ecompMdcWrapper.setOptCustomField1("of1");
+		ecompMdcWrapper.clear();
+		assertNull(MDC.get(MDC_CLASS_NAME));
+		assertNull(MDC.get(ONAPLogConstants.MDCs.PARTNER_NAME));
+		assertNull(MDC.get(MDC_OPT_FIELD1));
+	}
+
+	@Test
+	public void clear_shouldNotThrowAnException_WhenNoFieldWasAssignedAsMandatoryOrOptional(){
+		ecompMdcWrapper.setClassName("class1");
+		ecompMdcWrapper.setPartnerName("partner1");
+		ecompMdcWrapper.setOptCustomField1("of1");
+		Exception exp = null;
+		try {
+			ecompMdcWrapper.clear();
+		}
+		catch (Exception e)
+		{
+			exp =e;
+		}
+		assertNull(exp);
+	}
+
+}
+
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerAsdcUtilTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerAsdcUtilTest.java
new file mode 100644
index 0000000..4b0533a
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerAsdcUtilTest.java
@@ -0,0 +1,195 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.openecomp.sdc.common.log.wrappers.LoggerSdcAudit;
+import org.openecomp.sdc.common.log.wrappers.LoggerSdcUtilBase;
+import org.slf4j.MarkerFactory;
+
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.core.UriInfo;
+import java.net.URI;
+import java.net.URISyntaxException;
+
+import static java.net.HttpURLConnection.*;
+import static org.junit.Assert.*;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.when;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerAsdcUtilTest {
+
+    private static final String chromeUserAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36";
+    private static final String firefoxUserAgent = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1.13) Gecko/20080313 Firefox";
+    private static final String explorerUserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0)";
+
+    private static final String testUserId = "ml007";
+    private static final String urlWithUserName = "/api/v1/user/" + testUserId;
+    private static final String xOnapPartnerName = "ml007";
+
+    class SdcEelfAuditTest extends LoggerSdcAudit {
+
+        SdcEelfAuditTest(Class<?> clazz) {
+            super(clazz);
+        }
+
+        public String getPartnerName(String userAgent, String userID, String url, String xOnapPartnerName) {
+            return super.getPartnerName(userAgent, userID, url, xOnapPartnerName);
+        }
+    }
+
+    @Mock
+    private ContainerRequestContext requestContext;
+    @Mock
+    UriInfo uriInfo;
+
+    private SdcEelfAuditTest asdcEelfAudit;
+
+    @Before
+    public void Init () throws URISyntaxException {
+        asdcEelfAudit = new SdcEelfAuditTest(LoggerAsdcUtilTest.class);
+        when(requestContext.getHeaderString(anyString())).thenReturn("ab2222");
+        when(requestContext.getUriInfo()).thenReturn(uriInfo);
+        URI uri = new URI("http:/abc.com/getId");
+        when(uriInfo.getRequestUri()).thenReturn(uri);
+        when(uriInfo.getBaseUri()).thenReturn(uri);
+
+    }
+
+    @Test
+    public void extract_user_id_from_userAgentTest() {
+
+        String userIdChrome = asdcEelfAudit.getPartnerName(chromeUserAgent, "", "", "");
+        assertEquals(userIdChrome.toLowerCase(), "chrome_FE".toLowerCase());
+
+        String userIdFireFox = asdcEelfAudit.getPartnerName(firefoxUserAgent, "", "", "");
+        assertEquals(userIdFireFox.toLowerCase(), "firefox_FE".toLowerCase());
+
+        String userIdIE = asdcEelfAudit.getPartnerName(explorerUserAgent, "", "", "");
+        assertEquals(userIdIE.toLowerCase(), "explorer_FE".toLowerCase());
+    }
+
+    @Test
+    public void extract_user_id_from_urlTest() {
+
+        String userId = asdcEelfAudit.getPartnerName("", "", urlWithUserName, "");
+        assertEquals(testUserId, userId);
+    }
+
+    @Test
+    public void extract_user_id_from_paramTest() {
+
+        String userId = asdcEelfAudit.getPartnerName("", testUserId, "", "");
+        assertEquals(userId, testUserId);
+    }
+
+    @Test
+    public void extract_user_id_from_xOnapPartnerNameTest() {
+
+        String userId = asdcEelfAudit.getPartnerName("", "", "", xOnapPartnerName);
+        assertEquals(userId, testUserId);
+    }
+
+    @Test
+    public void extract_user_id_priorityTest() {
+
+        String userId = asdcEelfAudit.getPartnerName(chromeUserAgent, testUserId, urlWithUserName, xOnapPartnerName);
+        assertEquals(userId, testUserId);
+
+        String userIdUrl = asdcEelfAudit.getPartnerName(chromeUserAgent, "", urlWithUserName, "");
+        assertEquals(userIdUrl, testUserId);
+
+        String userIdUserAgent = asdcEelfAudit.getPartnerName(chromeUserAgent, "", "", "");
+        assertEquals(userIdUserAgent.toLowerCase(), "chrome_FE".toLowerCase());
+    }
+
+    @Test
+    public void check_http_error_convert_to_eelf_code() {
+        class LoggerSdcUtilBaseTest extends LoggerSdcUtilBase {
+            public EcompLoggerErrorCode convertHttpCodeToErrorCode(int httpResponseCode) {
+                return super.convertHttpCodeToErrorCode(httpResponseCode);
+            }
+        }
+
+        LoggerSdcUtilBaseTest utilBase = new LoggerSdcUtilBaseTest();
+
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_BAD_REQUEST), EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_UNAUTHORIZED), EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_NOT_FOUND), EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_CLIENT_TIMEOUT), EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_GONE), EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR);
+
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_PAYMENT_REQUIRED), EcompLoggerErrorCode.PERMISSION_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_FORBIDDEN), EcompLoggerErrorCode.PERMISSION_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_BAD_METHOD), EcompLoggerErrorCode.PERMISSION_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_PROXY_AUTH), EcompLoggerErrorCode.PERMISSION_ERROR);
+
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_NOT_ACCEPTABLE), EcompLoggerErrorCode.DATA_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_LENGTH_REQUIRED), EcompLoggerErrorCode.DATA_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_PRECON_FAILED), EcompLoggerErrorCode.DATA_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_REQ_TOO_LONG), EcompLoggerErrorCode.DATA_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_ENTITY_TOO_LARGE), EcompLoggerErrorCode.DATA_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_UNSUPPORTED_TYPE), EcompLoggerErrorCode.DATA_ERROR);
+
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_CONFLICT), EcompLoggerErrorCode.SCHEMA_ERROR);
+
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_OK), EcompLoggerErrorCode.SUCCESS);
+
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_INTERNAL_ERROR), EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_NOT_IMPLEMENTED), EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_BAD_GATEWAY), EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_UNAVAILABLE), EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_GATEWAY_TIMEOUT), EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR);
+        Assert.assertEquals(utilBase.convertHttpCodeToErrorCode(HTTP_VERSION), EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR);
+
+    }
+
+    @Test
+    public void takenCareOf_shouldBeTrue_ifStartedLogWasCalled(){
+        asdcEelfAudit.startLog(requestContext);
+        assertTrue(asdcEelfAudit.isFlowBeingTakenCare());
+    }
+
+    @Test
+    public void takenCareOf_shouldBeFalse_ifStartedLogWasNoCalled(){
+        assertFalse(asdcEelfAudit.isFlowBeingTakenCare());
+    }
+
+    @Test
+    public void takenCareOf_shouldBeFalse_ifStartedLogWasCalleAndLogWasCalledToo(){
+        asdcEelfAudit.startLog(requestContext);
+        
+        asdcEelfAudit.logExit(null,null,null, LogLevel.INFO,  Severity.OK,
+                "message", MarkerFactory.getMarker(ONAPLogConstants.Markers.EXIT.getName()));
+        assertFalse(asdcEelfAudit.isFlowBeingTakenCare());
+    }
+}
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerAuditTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerAuditTest.java
new file mode 100644
index 0000000..7ca1cf1
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerAuditTest.java
@@ -0,0 +1,117 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.slf4j.Logger;
+import org.slf4j.MDC;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.UUID;
+
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.MDCs.*;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.*;
+import static org.openecomp.sdc.common.log.elements.LogFieldsMdcHandler.hostAddress;
+import static org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode.DATA_ERROR;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerAuditTest {
+    @Mock
+    private Logger logger;
+
+    private LoggerAudit auditLog;
+
+    @Before
+    public void init() {
+        auditLog = new LoggerAudit(LogFieldsMdcHandler.getInstance(), logger);
+    }
+
+    @After
+    public void tearDown() {
+        MDC.clear();
+    }
+
+    @Test
+    public void whenNoAuditFieldsArePopulated_ShouldReturnAssertTrue_onMdcMap() {
+        auditLog.clear()
+                .log(LogLevel.INFO, "some error code");
+        Assert.assertNotNull(MDC.get(SERVER_FQDN));
+        Assert.assertNotNull(MDC.get(MDC_SERVER_IP_ADDRESS));
+    }
+
+    @Test
+    public void whenAllAuditFieldsArePopulated_ShouldReturnAssertTrue_onEachMACField() throws UnknownHostException {
+
+        String uuid = UUID.randomUUID().toString();
+        String hostName = InetAddress.getByName(hostAddress).getCanonicalHostName();
+        String hostAddress = InetAddress.getLocalHost().getHostAddress();
+
+        auditLog.clear()
+                .startTimer()
+                .stopTimer()
+                .setKeyRequestId(uuid)
+                .setInstanceUUID(INSTANCE_UUID)
+                .setRemoteHost(MDC_REMOTE_HOST)
+                .setServiceName(SERVICE_NAME)
+                .setResponseCode(DATA_ERROR)
+                .setStatusCodeByResponseCode("201")
+                .setResponseDesc(RESPONSE_DESCRIPTION)
+                .setPartnerName(PARTNER_NAME)
+
+                .setOptClassName(LoggerAuditTest.class.toString())
+                .setOptAlertSeverity(Severity.CRITICAL)
+                .setOptProcessKey(MDC_PROCESS_KEY)
+                .setOptServiceInstanceId(MDC_SERVICE_INSTANCE_ID)
+                .log(LogLevel.DEBUG, "");
+
+
+        Assert.assertFalse(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(ENTRY_TIMESTAMP));
+        Assert.assertFalse(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(MDC_END_TIMESTAMP));
+        Assert.assertFalse(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(MDC_ELAPSED_TIME));
+
+        Assert.assertEquals(MDC.get(MDC_SERVER_IP_ADDRESS), hostAddress);
+        Assert.assertEquals(MDC.get(SERVER_FQDN), hostName);
+        Assert.assertEquals(MDC.get(MDC_REMOTE_HOST), MDC_REMOTE_HOST);
+        Assert.assertEquals(MDC.get(RESPONSE_STATUS_CODE), ONAPLogConstants.ResponseStatus.COMPLETE.name());
+
+        Assert.assertEquals(MDC.get(REQUEST_ID), uuid);
+        Assert.assertEquals(MDC.get(SERVICE_NAME), SERVICE_NAME);
+        Assert.assertEquals(MDC.get(PARTNER_NAME), PARTNER_NAME);
+        Assert.assertEquals(MDC.get(RESPONSE_CODE), String.valueOf(DATA_ERROR.getErrorCode()));
+        Assert.assertEquals(MDC.get(RESPONSE_DESCRIPTION), RESPONSE_DESCRIPTION);
+        Assert.assertEquals(MDC.get(INSTANCE_UUID), INSTANCE_UUID);
+        Assert.assertEquals(MDC.get(MDC_CLASS_NAME), LoggerAuditTest.class.toString());
+
+        Assert.assertEquals(MDC.get(RESPONSE_SEVERITY), String.valueOf(Severity.CRITICAL.getSeverityType()));
+        Assert.assertEquals(MDC.get(MDC_PROCESS_KEY), MDC_PROCESS_KEY);
+        Assert.assertEquals(MDC.get(MDC_SERVICE_INSTANCE_ID), MDC_SERVICE_INSTANCE_ID);
+    }
+}
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerBaseTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerBaseTest.java
new file mode 100644
index 0000000..91e1aab
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerBaseTest.java
@@ -0,0 +1,142 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.enums.ConstantsLogging;
+
+import javax.servlet.http.HttpServletRequest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerBaseTest {
+
+    @Mock
+    HttpServletRequest httpServletRequest;
+
+    private static final String ONAP_REQ_ID_VALUE = "onapReqId";
+    private static final String REQ_ID_VALUE = "reqId";
+    private static final String TRANSACTION_RE_IQ_VALUE = "transactionReqId";
+    private static final String ECOMP_REQ_ID_VALUE = "ecompReqId";
+    private static final String USER_ID_VALUE = "userId";
+    private static final String ONAP_PARTNER_NAME_VALUE = "partnerName";
+    private static final String USER_UGENT = "userAgent";
+
+    @Test
+    public void testGetRequestIfFromOnapHeader() {
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.REQUEST_ID)).thenReturn(ONAP_REQ_ID_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_REQUEST_ID)).thenReturn(REQ_ID_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_TRANSACTION_ID_HEADER)).thenReturn(TRANSACTION_RE_IQ_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_ECOMP_REQUEST_ID_HEADER)).thenReturn(ECOMP_REQ_ID_VALUE);
+
+        String requestId = LoggerBase.getRequestId(httpServletRequest);
+        assertThat(requestId).isEqualTo(ONAP_REQ_ID_VALUE);
+    }
+
+    @Test
+    public void testGetRequestIfFromReqIdHeader() {
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_REQUEST_ID)).thenReturn(REQ_ID_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_TRANSACTION_ID_HEADER)).thenReturn(TRANSACTION_RE_IQ_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_ECOMP_REQUEST_ID_HEADER)).thenReturn(ECOMP_REQ_ID_VALUE);
+
+        String requestId = LoggerBase.getRequestId(httpServletRequest);
+        assertThat(requestId).isEqualTo(REQ_ID_VALUE);
+    }
+
+    @Test
+    public void testGetRequestIfFromTransactionIdHeader() {
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_TRANSACTION_ID_HEADER)).thenReturn(TRANSACTION_RE_IQ_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_ECOMP_REQUEST_ID_HEADER)).thenReturn(ECOMP_REQ_ID_VALUE);
+
+        String requestId = LoggerBase.getRequestId(httpServletRequest);
+        assertThat(requestId).isEqualTo(TRANSACTION_RE_IQ_VALUE);
+    }
+
+    @Test
+    public void testGetRequestIfFromEcompIdHeader() {
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_TRANSACTION_ID_HEADER)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_ECOMP_REQUEST_ID_HEADER)).thenReturn(ECOMP_REQ_ID_VALUE);
+
+        String requestId = LoggerBase.getRequestId(httpServletRequest);
+        assertThat(requestId).isEqualTo(ECOMP_REQ_ID_VALUE);
+    }
+
+    @Test
+    public void testGetRequestIfFromRandonHeader() {
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_REQUEST_ID)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_TRANSACTION_ID_HEADER)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.X_ECOMP_REQUEST_ID_HEADER)).thenReturn(null);
+
+        String requestId = LoggerBase.getRequestId(httpServletRequest);
+        assertThat(requestId).isNotEmpty();
+    }
+
+    @Test
+    public void testPartnerNameFromUserHeader() {
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_ID_HEADER)).thenReturn(USER_ID_VALUE);
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_AGENT_HEADER)).thenReturn(USER_UGENT);
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.PARTNER_NAME)).thenReturn(ONAP_PARTNER_NAME_VALUE);
+
+        String partnerName = LoggerBase.getPartnerName(httpServletRequest);
+        assertThat(partnerName).isEqualTo(USER_ID_VALUE);
+    }
+
+    @Test
+    public void testPartnerNameFromOnapPartnerNameHeader() {
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_ID_HEADER)).thenReturn(null);
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.PARTNER_NAME)).thenReturn(ONAP_PARTNER_NAME_VALUE);
+
+        String partnerName = LoggerBase.getPartnerName(httpServletRequest);
+        assertThat(partnerName).isEqualTo(ONAP_PARTNER_NAME_VALUE);
+    }
+
+    @Test
+    public void testPartnerNameFromReqUriHeader() {
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_ID_HEADER)).thenReturn(null);
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.PARTNER_NAME)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_AGENT_HEADER)).thenReturn(USER_UGENT);
+
+        String partnerName = LoggerBase.getPartnerName(httpServletRequest);
+        assertThat(partnerName).isEqualTo(USER_UGENT);
+    }
+
+    @Test
+    public void testPartnerNameUnknown() {
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_ID_HEADER)).thenReturn(null);
+        when(httpServletRequest.getHeader(ONAPLogConstants.Headers.PARTNER_NAME)).thenReturn(null);
+        when(httpServletRequest.getHeader(ConstantsLogging.USER_AGENT_HEADER)).thenReturn(null);
+
+        String partnerName = LoggerBase.getPartnerName(httpServletRequest);
+        assertThat(partnerName).isEqualTo(ConstantsLogging.PartnerName_Unknown);
+    }
+}
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerDebugTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerDebugTest.java
new file mode 100644
index 0000000..020b55c
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerDebugTest.java
@@ -0,0 +1,107 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.utils.LoggingThreadLocalsHolder;
+import org.slf4j.Logger;
+import org.slf4j.MDC;
+
+import java.net.UnknownHostException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.MDCs.RESPONSE_STATUS_CODE;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.*;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerDebugTest {
+
+    @Mock
+    private Logger logger;
+
+    private LoggerDebug debugLog;
+
+     @Before
+    public void init() {
+        debugLog = new LoggerDebug(LogFieldsMdcHandler.getInstance(), logger);
+        LoggingThreadLocalsHolder.setUuid(null);
+        MDC.clear();
+    }
+
+    @Test
+    public void whenNoFieldsIsPopulated_RequestedMdcFieldsAreEmpty() {
+        debugLog.clear()
+                .log(LogLevel.DEBUG, "some error code");
+        assertNull(MDC.get(ONAPLogConstants.MDCs.REQUEST_ID));
+    }
+
+    @Test
+    public void debugLogCheckValidationValidFieldsTest() {
+        debugLog.clear()
+                .startTimer()
+                .setKeyRequestId("uuid")
+                .log(LogLevel.DEBUG, "some error code");
+
+        assertEquals(MDC.get(ONAPLogConstants.MDCs.REQUEST_ID), "uuid");
+    }
+
+    @Test
+    public void whenOnlyDebugUUIDFieldsIsPopulated_ShouldReturnAssertTrue_onUUIDFieldCheck() {
+        debugLog.clear()
+                .setKeyRequestId("uuid")
+                .log(LogLevel.DEBUG, "some error code");
+
+        assertEquals("uuid", MDC.get(ONAPLogConstants.MDCs.REQUEST_ID));
+    }
+
+    @Test
+    public void whenAllDebugFieldsArePopulated_ShouldReturnAssertTrue_onEachMACFieldCheck() throws UnknownHostException {
+        debugLog.clear()
+                .startTimer()
+                .setKeyRequestId(ONAPLogConstants.MDCs.REQUEST_ID)
+                .log(LogLevel.DEBUG, "some message");
+
+        Assert.assertTrue(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(MDC_END_TIMESTAMP));
+        Assert.assertTrue(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(MDC_ELAPSED_TIME));
+        Assert.assertTrue(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(RESPONSE_STATUS_CODE));
+    }
+
+
+    @Test
+    public void validateMandatoryFields(){
+        assertEquals(ONAPLogConstants.MDCs.REQUEST_ID, debugLog.checkMandatoryFieldsExistInMDC().trim());
+    }
+
+    @Test
+    public void validateMandatoryFieldsWhenFieldIsSet(){
+        debugLog.clear()
+                .setKeyRequestId("1234");
+        assertEquals("", debugLog.checkMandatoryFieldsExistInMDC());
+    }
+}
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerErrorTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerErrorTest.java
new file mode 100644
index 0000000..06376ed
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerErrorTest.java
@@ -0,0 +1,92 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.utils.EcompLogErrorCode;
+import org.openecomp.sdc.common.log.utils.LoggingThreadLocalsHolder;
+import org.slf4j.Logger;
+import org.slf4j.MDC;
+
+import static org.junit.Assert.assertEquals;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.MDC_ERROR_CODE;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerErrorTest {
+    private LoggerError errorLog;
+
+    @Mock
+    private Logger logger;
+    @Before
+    public void init() {
+       errorLog = LoggerFactory.getMdcLogger(LoggerError.class, logger);
+       MDC.clear();
+    }
+
+    @Test
+    public void allFieldsArePresentTest() {
+        LoggingThreadLocalsHolder.setUuid("uuid");
+        errorLog.log(LogLevel.ERROR, EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR, "service", "entity", "server error");
+
+        assertEquals(MDC.get(MDC_ERROR_CODE), String.valueOf(EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR.getErrorCode()));
+        assertEquals("uuid", MDC.get(ONAPLogConstants.MDCs.REQUEST_ID));
+        assertEquals("entity", MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals("service", MDC.get(ONAPLogConstants.MDCs.SERVICE_NAME));
+    }
+
+    @Test
+    public void missingFieldsTest() {
+        errorLog.clear()
+                .log(LogLevel.ERROR,"some message");
+    }
+
+    @Test
+    public void convertEcompErrorForLogging_correctName() {
+        assertEquals(EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR, EcompLoggerErrorCode.getByValue(EcompLogErrorCode.E_210.name()));
+    }
+
+   @Test
+    public void convertEcompErrorForLogging_correctName_2() {
+        assertEquals(EcompLoggerErrorCode.DATA_ERROR, EcompLoggerErrorCode.getByValue(EcompLogErrorCode.E_399.name()));
+    }
+
+    @Test
+    public void convertEcompErrorForLogging_NotConvertable() {
+        assertEquals(EcompLoggerErrorCode.UNKNOWN_ERROR, EcompLoggerErrorCode.getByValue("ABC"));
+    }
+
+    @Test
+    public void convertEcompErrorForLogging_NotConvertable_2() {
+        assertEquals(EcompLoggerErrorCode.UNKNOWN_ERROR, EcompLoggerErrorCode.getByValue("E_ABC"));
+    }
+
+    @Test
+    public void convertEcompErrorForLogging_Success() {
+        assertEquals(EcompLoggerErrorCode.SUCCESS, EcompLoggerErrorCode.getByValue("E_0"));
+    }
+}
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerMetricTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerMetricTest.java
new file mode 100644
index 0000000..3bd1afc
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/elements/LoggerMetricTest.java
@@ -0,0 +1,122 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.elements;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.utils.LoggingThreadLocalsHolder;
+import org.slf4j.Logger;
+import org.slf4j.MDC;
+
+import javax.ws.rs.core.Response;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.UUID;
+
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.MDCs.*;
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.ResponseStatus.COMPLETE;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.*;
+import static org.openecomp.sdc.common.log.elements.LogFieldsMdcHandler.hostAddress;
+
+/**
+ * Created by dd4296 on 12/31/2017.
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerMetricTest {
+    @Mock
+    private Logger logger;
+
+    @Mock
+    Response.StatusType statusType;
+
+    private LoggerMetric metricLog;
+
+    @Before
+    public void init() {
+        metricLog = new LoggerMetric(LogFieldsMdcHandler.getInstance(), logger);
+    }
+
+    @After
+    public void tearDown() {
+        MDC.clear();
+        LoggingThreadLocalsHolder.setUuid(null);
+    }
+
+    @Test
+    public void whenNoMetricFieldsArePopulated_ShouldReturnassertEquals_onMdcMap() {
+        metricLog.clear()
+                .log(LogLevel.DEBUG, "some error code");
+        Assert.assertNotNull(MDC.get(SERVER_FQDN));
+        Assert.assertNotNull(MDC.get(MDC_SERVER_IP_ADDRESS));
+    }
+
+    @Test
+    public void whenAllMetricFieldsArePopulated_ShouldReturnassertEquals_onEachMACField() throws UnknownHostException {
+        String uuid = UUID.randomUUID().toString();
+        LoggingThreadLocalsHolder.setUuid(uuid);
+
+        String hostName = InetAddress.getByName(hostAddress).getCanonicalHostName();
+        String hostAddress = InetAddress.getLocalHost().getHostAddress();
+
+        metricLog.clear()
+                .startTimer()
+                .stopTimer()
+                .setInstanceUUID(INSTANCE_UUID)
+                .setRemoteHost(MDC_REMOTE_HOST)
+                .setServiceName(SERVICE_NAME)
+                .setResponseCode(500)
+                .setStatusCode(COMPLETE.name())
+                .setResponseDesc(RESPONSE_DESCRIPTION)
+                .setPartnerName(PARTNER_NAME)
+                .setOptClassName(LoggerMetricTest.class.toString())
+                .setOptServiceInstanceId(MDC_SERVICE_INSTANCE_ID)
+                .setTargetEntity(TARGET_ENTITY)
+                .setTargetServiceName(TARGET_SERVICE_NAME)
+                .setTargetVirtualEntity(MDC_TARGET_VIRTUAL_ENTITY)
+                .log(LogLevel.DEBUG, "");
+
+
+        Assert.assertFalse(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(INVOKE_TIMESTAMP));
+        Assert.assertFalse(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(MDC_END_TIMESTAMP));
+        Assert.assertFalse(LogFieldsMdcHandler.getInstance().isMDCParamEmpty(MDC_ELAPSED_TIME));
+        Assert.assertEquals(MDC.get(MDC_SERVER_IP_ADDRESS),hostAddress);
+        Assert.assertEquals(MDC.get(SERVER_FQDN), hostName);
+        Assert.assertEquals(MDC.get(MDC_REMOTE_HOST), MDC_REMOTE_HOST);
+        Assert.assertEquals(MDC.get(RESPONSE_STATUS_CODE) , "COMPLETE");
+        Assert.assertEquals(MDC.get(REQUEST_ID), uuid);
+        Assert.assertEquals(MDC.get(SERVICE_NAME) , SERVICE_NAME);
+        Assert.assertEquals(MDC.get(PARTNER_NAME) , PARTNER_NAME);
+        Assert.assertEquals(MDC.get(RESPONSE_CODE) ,"500");
+        Assert.assertEquals(MDC.get(RESPONSE_DESCRIPTION) , RESPONSE_DESCRIPTION);
+        Assert.assertEquals(MDC.get(INSTANCE_UUID) , INSTANCE_UUID);
+        Assert.assertEquals(MDC.get(MDC_CLASS_NAME) ,LoggerMetricTest.class.toString());
+        Assert.assertEquals(MDC.get(MDC_SERVICE_INSTANCE_ID) ,MDC_SERVICE_INSTANCE_ID);
+        Assert.assertEquals(MDC.get(TARGET_ENTITY) , TARGET_ENTITY);
+        Assert.assertEquals(MDC.get(TARGET_SERVICE_NAME) , TARGET_SERVICE_NAME);
+        Assert.assertEquals(MDC.get(MDC_TARGET_VIRTUAL_ENTITY) ,MDC_TARGET_VIRTUAL_ENTITY);
+    }
+}
diff --git a/common-app-logging/src/test/java/org/openecomp/sdc/common/log/wrappers/LoggerTest.java b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/wrappers/LoggerTest.java
new file mode 100644
index 0000000..fd66eff
--- /dev/null
+++ b/common-app-logging/src/test/java/org/openecomp/sdc/common/log/wrappers/LoggerTest.java
@@ -0,0 +1,378 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * 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.openecomp.sdc.common.log.wrappers;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.logging.ref.slf4j.ONAPLogConstants;
+import org.openecomp.sdc.common.log.api.LogConfigurationConstants;
+import org.openecomp.sdc.common.log.elements.ErrorLogOptionalData;
+import org.openecomp.sdc.common.log.elements.LoggerError;
+import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
+import org.openecomp.sdc.common.log.enums.LogLevel;
+import org.openecomp.sdc.common.log.enums.Severity;
+import org.openecomp.sdc.common.log.utils.LoggingThreadLocalsHolder;
+import org.slf4j.MDC;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+import java.net.URI;
+import java.net.URISyntaxException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.mockito.ArgumentMatchers.*;
+import static org.mockito.Mockito.*;
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.MDCs.REQUEST_ID;
+import static org.onap.logging.ref.slf4j.ONAPLogConstants.MDCs.SERVICE_NAME;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.MDC_ERROR_CATEGORY;
+import static org.openecomp.sdc.common.log.api.LogConfigurationConstants.MDC_ERROR_CODE;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LoggerTest {
+
+    private final static String targetEntity = "DCEA";
+    private final static String targetServiceName = "test target name";
+    private final static String serviceName = "testService";
+    private final static String message = "Logger message";
+    private final static String exceptionMsg= "Exception testing";
+
+    @Mock
+    private org.slf4j.Logger logger;
+    @Mock
+    private ContainerRequestContext requestContext;
+    @Mock
+    private UriInfo uriInfo;
+    @Mock
+    private Response.StatusType statusType;
+
+    @InjectMocks
+    private Logger commonLogger;
+
+    @Captor
+    private ArgumentCaptor<String> captor;
+
+    @Before
+    public void setUp() {
+        MDC.clear();
+    }
+
+    @Test
+    public void validateErrorLogWhenErrorSettingsProvided() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        commonLogger.error(EcompLoggerErrorCode.PERMISSION_ERROR, serviceName, targetEntity, message);
+
+        verify(logger).error(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.PERMISSION_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+    }
+
+    @Test
+    public void validateWarnMessageIsLoggedWhenAllErrorSettingsProvided() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        commonLogger.error(EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR, serviceName, targetEntity, message);
+
+        verify(logger).error(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.AVAILABILITY_TIMEOUTS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+    }
+
+    @Test
+    public void validateFatalMessageIsLoggedWhenAllErrorSettingsProvided() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        commonLogger.fatal(EcompLoggerErrorCode.PERMISSION_ERROR, serviceName, targetEntity, message);
+
+        verify(logger).error(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.PERMISSION_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.FATAL.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+    }
+
+    @Test
+    public void validateWarnMessage_AllErrorElements() {
+        when(logger.isWarnEnabled()).thenReturn(true);
+        ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder()
+                .targetEntity(targetEntity)
+                .targetServiceName(targetServiceName).build();
+        commonLogger.warn(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName,errorLogOptionalData, message);
+        verify(logger).warn(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.WARN.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+        assertEquals(targetServiceName, MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME));
+    }
+
+    @Test
+    public void validateWarnMessage_emptyTargetEntity() {
+        when(logger.isWarnEnabled()).thenReturn(true);
+        ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder()
+                .targetServiceName(targetServiceName).build();
+        commonLogger.warn(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName,errorLogOptionalData, message);
+        verify(logger).warn(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.WARN.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(null, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+        assertEquals(targetServiceName, MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME));
+    }
+
+    @Test
+    public void validateWarnMessage_emptyTargetServiceName() {
+        when(logger.isWarnEnabled()).thenReturn(true);
+        ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder()
+                .targetEntity(targetEntity).build();
+        commonLogger.warn(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName,errorLogOptionalData, message);
+        verify(logger).warn(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.WARN.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+        assertEquals(null, MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME));
+    }
+
+
+    @Test
+    public void validateErrorMessage_AllErrorElements() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder()
+                .targetEntity(targetEntity)
+                .targetServiceName(targetServiceName).build();
+        commonLogger.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName,errorLogOptionalData, message);
+        verify(logger).error(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+        assertEquals(targetServiceName, MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME));
+    }
+
+    @Test
+    public void validateErrorMessage_emptyTargetEntity() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder()
+                .targetServiceName(targetServiceName).build();
+        commonLogger.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName,errorLogOptionalData, message);
+        verify(logger).error(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(null, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+        assertEquals(targetServiceName, MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME));
+    }
+
+    @Test
+    public void validateErrorMessage_emptyTargetServiceName() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder()
+                .targetEntity(targetEntity).build();
+        commonLogger.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName,errorLogOptionalData, message);
+        verify(logger).error(any(Marker.class), captor.capture(), any(Object[].class));
+        assertEquals(message, captor.getValue());
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals(targetEntity, MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(serviceName, MDC.get(SERVICE_NAME));
+        assertEquals(null, MDC.get(ONAPLogConstants.MDCs.TARGET_SERVICE_NAME));
+    }
+
+
+
+    @Test
+    public void validateErrorMessageIsNotLoggedWhenErrorLevelIsDisabledEvenIfErrorSettingsProvided() {
+        commonLogger.error(EcompLoggerErrorCode.PERMISSION_ERROR, serviceName, targetEntity, message);
+        verify(logger, never()).error(any(Marker.class), any(String.class));
+    }
+
+    @Test
+    public void validateErrorLogWhenErrorSettingsProvidedPartially() {
+        when(logger.isErrorEnabled()).thenReturn(true);
+        commonLogger.error(message);
+
+        verify(logger).error(any(Marker.class), eq(message), any(Object[].class));
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertNull(MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(LoggerError.defaultServiceName, MDC.get(SERVICE_NAME));
+    }
+
+    @Test
+    public void errorMessageIsNotLoggedWhenErrorLevelIsDisabled() {
+        commonLogger.error(message);
+        verify(logger, times(0)).error(any(Marker.class), anyString());
+    }
+
+    @Test
+    public void traceMessageWithExceptionIsNotLoggedWhenTraceLevelIsDisabled() {
+        commonLogger.trace(message, new UnsupportedOperationException());
+        verify(logger, times(0)).trace(any(Marker.class), anyString());
+    }
+
+    @Test
+    public void verifyInfoMessage() {
+        final String msg = "Info message";
+        when(logger.isInfoEnabled()).thenReturn(true);
+        commonLogger.info(msg, new RuntimeException());
+        verify(logger).info(any(Marker.class), anyString());
+    }
+
+    @Test
+    public void verifyWarnMessage() {
+        when(logger.isWarnEnabled()).thenReturn(true);
+        commonLogger.warn("Text");
+        assertEquals(LogLevel.WARN.name(), MDC.get(MDC_ERROR_CATEGORY));
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(MDC_ERROR_CODE));
+        assertEquals(LoggerError.defaultServiceName, MDC.get(SERVICE_NAME));
+    }
+
+    @Test
+    public void validateErrorLogWithExceptionWhenErrorSettingsProvidedPartially() {
+        LoggingThreadLocalsHolder.setUuid("uuid");
+        when(logger.isWarnEnabled()).thenReturn(true);
+        commonLogger.warn(message, new NullPointerException(exceptionMsg));
+
+        //the expected warn message
+        verify(logger).warn(any(Marker.class), contains(message), any(Object[].class));
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(LogConfigurationConstants.MDC_ERROR_CODE));
+        assertEquals(LogLevel.WARN.name(), MDC.get(LogConfigurationConstants.MDC_ERROR_CATEGORY));
+        assertEquals("uuid", MDC.get(REQUEST_ID));
+        assertNull(MDC.get(ONAPLogConstants.MDCs.TARGET_ENTITY));
+        assertEquals(LoggerError.defaultServiceName, MDC.get(SERVICE_NAME));
+    }
+
+
+    @Test
+    public void validateDebugLogWithException() {
+        final String msg = "Debug message";
+        LoggingThreadLocalsHolder.setUuid("uuid");
+        when(logger.isDebugEnabled()).thenReturn(true);
+        commonLogger.debug(msg, new RuntimeException());
+
+        verify(logger).debug(any(Marker.class), eq(msg), any(RuntimeException.class));
+    }
+
+    @Test
+    public void validateTraceLogWithExceptionAndPartialParamsAndDebugLevelDisabled() {
+        final String msg = "Debug message";
+        when(logger.isTraceEnabled()).thenReturn(true);
+        commonLogger.trace(msg, new RuntimeException());
+
+        verify(logger).trace(any(Marker.class), eq(msg), any(RuntimeException.class));
+    }
+
+    @Test
+    public void warnMessageWithParameterIsNotLoggedIfWarnLevelIsDisabled() {
+        commonLogger.warn("msg", "param");
+        verify(logger, times(0)).warn(any(Marker.class),
+                                    anyString(), any(Object.class));
+    }
+
+    @Test
+    public void verifyMdcValuesAreStoredWhenAuditAndErrorLoggersAreInvokedSequentially() throws URISyntaxException {
+        final String uuid = "12345";
+        final String messageInt = "message";
+        when(requestContext.getHeaderString(anyString())).thenReturn("ab2222");
+        when(requestContext.getUriInfo()).thenReturn(uriInfo);
+        when(logger.isErrorEnabled()).thenReturn(true);
+
+        URI uri = new URI("http:/abc.com/getId");
+        when(uriInfo.getRequestUri()).thenReturn(uri);
+        when(uriInfo.getBaseUri()).thenReturn(uri);
+        when(statusType.getStatusCode()).thenReturn(200);
+        when(statusType.getReasonPhrase()).thenReturn("OK");
+        LoggerSdcAudit audit = new LoggerSdcAudit(this.getClass());
+        LoggingThreadLocalsHolder.setUuid(uuid);
+        audit.startLog(requestContext);
+        audit.logExit("abc.log.com", requestContext, statusType, LogLevel.INFO, Severity.OK, messageInt,
+                MarkerFactory.getMarker(ONAPLogConstants.Markers.EXIT.getName()));
+
+        commonLogger.error(messageInt);
+        verify(logger).error(any(Marker.class), eq(messageInt), any(Object[].class));
+        assertEquals(uuid, MDC.get(REQUEST_ID));
+        assertEquals("/", MDC.get(SERVICE_NAME));
+        assertEquals(LogLevel.ERROR.name(), MDC.get(MDC_ERROR_CATEGORY));
+        assertEquals(String.valueOf(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR.getErrorCode()), MDC.get(MDC_ERROR_CODE));
+    }
+
+    @Test
+    public void verifyLoggerDoesNothingWhenTheLevelIsNotSet() {
+        if (commonLogger.isDebugEnabled()) {
+            commonLogger.debug("text");
+        }
+        verify(logger, times(0)).debug(any(Marker.class), anyString(), eq((Object[])null));
+    }
+
+    @Test
+    public void verifyLoggerTraceMethodIsCalledWhenTheLevelIsSet() {
+        LoggingThreadLocalsHolder.setUuid("1234");
+        when(logger.isTraceEnabled()).thenReturn(true);
+        if (commonLogger.isTraceEnabled()) {
+            commonLogger.trace("text");
+        }
+        verify(logger, times(1)).trace(any(Marker.class), anyString(), eq((Object[])null));
+    }
+
+
+    @Test
+    public void verifyMdcValuesAreStoredWhenTraceLoggerIsInvokedAfterAuditStart() throws URISyntaxException {
+        final String uuid = "12345";
+        final String messageInt = "message";
+        when(requestContext.getHeaderString(anyString())).thenReturn("ab2222");
+        when(requestContext.getUriInfo()).thenReturn(uriInfo);
+        when(logger.isTraceEnabled()).thenReturn(true);
+
+        URI uri = new URI("http:/abc.com/getId");
+        when(uriInfo.getRequestUri()).thenReturn(uri);
+        when(uriInfo.getBaseUri()).thenReturn(uri);
+        LoggerSdcAudit audit = new LoggerSdcAudit(this.getClass());
+        LoggingThreadLocalsHolder.setUuid(uuid);
+        audit.startLog(requestContext);
+
+        commonLogger.trace(messageInt);
+        verify(logger).trace(any(Marker.class), captor.capture(), eq((Object[])null));
+        assertEquals(messageInt, captor.getValue());
+        assertEquals(uuid, MDC.get(REQUEST_ID));
+    }
+
+
+}