introduced logging

main.go

@@ -17,6 +17,7 @@ package main
 import (
 	"context"
 	"fmt"
+	"log"
 	"os"
 	"os/signal"
 	"syscall"
@@ -31,7 +32,6 @@ var signals = []os.Signal{
 }
 
 func main() {
-
 	ctx, stop := signal.NotifyContext(context.Background(), signals...)
 	defer stop()
 
@@ -41,12 +41,20 @@ func main() {
 		os.Exit(1)
 	}
 
-	prov, err := provider.NewEdgeConnectProvider(executionEnv.ProviderConfigFile, executionEnv.ControllerID)
+	prov, logFilePath, err := provider.NewEdgeConnectProvider(executionEnv.ProviderConfigFile, executionEnv.ControllerID)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error creating provider: %q", err)
 		os.Exit(1)
 	}
 
+	logFile, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_RDWR|os.O_CREATE, 0644)
+	if err != nil {
+		log.Panic(err)
+	}
+	defer logFile.Close()
+	// set log out put
+	log.SetOutput(logFile)
+
 	result, err := executionEnv.Run(ctx, prov)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "failed to run command: %+v\n", err)