HDFSWriter microservice working copy

[demo.git] / vnfs / DAaaS / microservices / GoApps / src / go-hdfs-writer / pkg / utils / logutils.go

diff --git a/vnfs/DAaaS/microservices/GoApps/src/go-hdfs-writer/pkg/utils/logutils.go b/vnfs/DAaaS/microservices/GoApps/src/go-hdfs-writer/pkg/utils/logutils.go
new file mode 100644 (file)
index 0000000..0f72e71
--- /dev/null
+++ b/vnfs/DAaaS/microservices/GoApps/src/go-hdfs-writer/pkg/utils/logutils.go
@@ -0,0 +1,32 @@
+package utils
+
+import (
+       "go.uber.org/zap"
+       "fmt"
+       "sync"
+)
+
+
+
+var logOnce sync.Once
+var logger *zap.SugaredLogger
+
+//GetLoggerInstance returns a singleton instance of logger
+func GetLoggerInstance() (*zap.SugaredLogger){
+       logOnce.Do(func(){
+               logger = createLogger()
+       })
+       return logger
+}
+
+
+//createLogger returns a SugaredLogger, sugaredLogger can be directly used to generate logs
+func createLogger() (*zap.SugaredLogger){
+       logger, err := zap.NewDevelopment()
+       if err != nil {
+               fmt.Printf("can't initialize zap logger: %v", err)
+       }
+       defer logger.Sync()
+       slogger := logger.Sugar()
+       return slogger
+}
\ No newline at end of file