Only output logs if --tee flag is given

README.md

@@ -48,16 +48,16 @@ Those flags can be omitted, if the following environment variables are used inst
 The tool also has a built-in help, at the time of writing it said:
 
     NAME:
-       logingestor - Follow a log file and send lines to Azure Monitor Logs
+       logingestor - Tail a log file and send lines to Azure Monitor Logs
 
     USAGE:
        logingestor [global options] command [command options] [arguments...]
 
     VERSION:
-       9377315-dirty
+       v0.0.1-0-g05b1105-dirty
 
     DESCRIPTION:
-       A tool to follow a log file and send lines to Azure Monitor Logs
+       A tool to tail a log file and send lines to Azure Monitor Logs
 
     COMMANDS:
        help, h  Shows a list of commands or help for one command
@@ -66,6 +66,7 @@ The tool also has a built-in help, at the time of writing it said:
        --endpoint ENDPOINT        The ENDPOINT to send data to [$AZURE_MONITOR_ENDPOINT]
        --rule-id RULE-ID          The RULE-ID to send data to [$AZURE_MONITOR_RULE_ID]
        --stream-name STREAM-NAME  The STREAM-NAME to send data to [$AZURE_MONITOR_STREAM_NAME]
+       --tee                      If set, processed entries are output to stdout (default: false)
        --help, -h                 show help
        --version, -v              print the version
 
@@ -78,7 +79,3 @@ These are "stored" here for later reference.
 - [Azure Monitor Ingestion client module for Go](https://pkg.go.dev/github.com/Azure/azure-sdk-for-go/sdk/monitor/azingest)
 - [Logs Ingestion API in Azure MonitorLogs Ingestion API in Azure Monitor](https://learn.microsoft.com/en-us/azure/azure-monitor/logs/logs-ingestion-api-overview)
 - [Sample code to send data to Azure Monitor using Logs ingestion API](https://learn.microsoft.com/en-us/azure/azure-monitor/logs/tutorial-logs-ingestion-code?tabs=go)
-
-### Compile for Linux on i386
-
-GOOS=linux GOARCH=386 go build logingestor.go

logingestor.go

@@ -16,6 +16,7 @@ var version = "undefined"
 
 func main() {
 	var logfile, endpoint, streamName, ruleId string
+	var tee bool
 
 	app := &cli.App{
 		Name:        "logingestor",
@@ -42,6 +43,12 @@ func main() {
 				EnvVars:     []string{"AZURE_MONITOR_STREAM_NAME"},
 				Destination: &streamName,
 			},
+			&cli.BoolFlag{
+				Name:        "tee",
+				Value:       false,
+				Usage:       "If set, processed entries are output to stdout",
+				Destination: &tee,
+			},
 		},
 		Action: func(cCtx *cli.Context) error {
 			cred, err := azidentity.NewDefaultAzureCredential(nil)
@@ -75,7 +82,9 @@ func main() {
 				// wrap line in [] so the ingestion accepts it
 				wrappedLine := "[" + line.String() + "]"
 
-				fmt.Println(wrappedLine)
+				if tee {
+					fmt.Println(wrappedLine)
+				}
 
 				// upload logs
 				_, err = client.Upload(context.TODO(), ruleId, streamName, []byte(wrappedLine), nil)