Initial version
Change-Id: Ia95ac0cc8321d78489de7b728449f94e5553f27a
Signed-off-by: Mohamed Abukar <abukar.mohamed@nokia.com>
diff --git a/pkg/xapp/config.go b/pkg/xapp/config.go
new file mode 100755
index 0000000..c63e32c
--- /dev/null
+++ b/pkg/xapp/config.go
@@ -0,0 +1,81 @@
+/*
+==================================================================================
+ Copyright (c) 2019 AT&T Intellectual Property.
+ Copyright (c) 2019 Nokia
+
+ 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.
+==================================================================================
+*/
+
+package xapp
+
+import (
+ "flag"
+ "github.com/fsnotify/fsnotify"
+ "github.com/spf13/viper"
+ "os"
+)
+
+type Configurator struct {
+}
+
+type ConfigChangeCB func(filename string)
+
+var ConfigChangeListeners []ConfigChangeCB
+
+func parseCmd() string {
+ var fileName *string
+ fileName = flag.String("f", os.Getenv("CFG_FILE"), "Specify the configuration file.")
+ flag.Parse()
+
+ return *fileName
+}
+
+func LoadConfig() (l Log) {
+ l = Log{}
+ viper.SetConfigFile(parseCmd())
+
+ if err := viper.ReadInConfig(); err != nil {
+ l.Error("Reading config file failed: %v", err.Error())
+ }
+ l.Info("Using config file: %s", viper.ConfigFileUsed())
+
+ viper.WatchConfig()
+ viper.OnConfigChange(func(e fsnotify.Event) {
+ l.Info("config file %s changed ", e.Name)
+
+ Logger.SetLevel(viper.GetInt("logger.level"))
+ if len(ConfigChangeListeners) > 0 {
+ for _, f := range ConfigChangeListeners {
+ go f(e.Name)
+ }
+ }
+ })
+
+ return
+}
+
+func AddConfigChangeListener(f ConfigChangeCB) {
+ if ConfigChangeListeners == nil {
+ ConfigChangeListeners = make([]ConfigChangeCB, 0)
+ }
+ ConfigChangeListeners = append(ConfigChangeListeners, f)
+}
+
+func (*Configurator) GetString(key string) string {
+ return viper.GetString(key)
+}
+
+func (*Configurator) GetInt(key string) int {
+ return viper.GetInt(key)
+}