Initial version

.gitignore

@@ -0,0 +1 @@
+/flsend

README.md

@@ -1,3 +1,40 @@
 # flsend
 
 Simple tool to send message to fluent
+
+## Building
+
+
+```sh
+go install go.ar76.eu/arek/flsend@latest
+```
+
+## Usage
+
+Parameters:
+
+```
+Usage of flsend:
+  -host string
+        Fluentd address (default "localhost")
+  -port int
+        Fluentd port (default 24224)
+  -prefix string
+        Tag preffix (application name) (default "flsend")
+  -tag string
+        Message tag (required)
+```
+
+Message is read from the standard input and send to fluentd with tag composed of{prefix}.{tag}.
+
+Eg.
+
+```sh
+echo '{"msg": "Message description"}' | flsend -host 10.10.10.10 -tag test
+```
+
+saves the message in fluentd as
+
+```
+2023-03-14T16:10:54+00:00       flsend.test        {"msg":"Message description"}
+```

flsend.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"time"
+
+	"github.com/fluent/fluent-logger-golang/fluent"
+)
+
+var (
+	fluentHost string
+	fluentPort int
+	tagPrefix  string
+	tag        string
+	msg        string
+)
+
+func main() {
+	flag.StringVar(&fluentHost, "host", "localhost", "Fluentd address")
+	flag.IntVar(&fluentPort, "port", 24224, "Fluentd port")
+	flag.StringVar(&tagPrefix, "prefix", "flsend", "Tag preffix (application name)")
+	flag.StringVar(&tag, "tag", "", "Message tag (required)")
+
+	flag.Parse()
+	if tag == "" {
+		fmt.Fprintf(os.Stderr, "Error: the --tag flag is required\n\n");
+		flag.PrintDefaults()
+		os.Exit(1)
+	}
+
+	cfg := fluent.Config{
+		SubSecondPrecision: true,
+		FluentHost:         fluentHost,
+		FluentPort:         fluentPort,
+		TagPrefix:          tagPrefix,
+		RequestAck:         true,
+	}
+
+	msg := make(map[string]any)
+
+	bytes, err := io.ReadAll(os.Stdin)
+	if err != nil {
+		panic(err)
+	}
+	err = json.Unmarshal(bytes, &msg)
+	if err != nil {
+		panic(err)
+	}
+
+	logger, err := fluent.New(cfg)
+	if err != nil {
+		panic(err)
+	}
+	defer logger.Close()
+
+	err = logger.PostWithTime(tag, time.Now(), msg)
+	if err != nil {
+		panic(err)
+	}
+
+}

go.mod

@@ -0,0 +1,9 @@
+module go.ar76.eu/arek/flsend
+
+go 1.20
+
+require (
+	github.com/fluent/fluent-logger-golang v1.9.0 // indirect
+	github.com/philhofer/fwd v1.1.2 // indirect
+	github.com/tinylib/msgp v1.1.8 // indirect
+)

go.sum

@@ -0,0 +1,36 @@
+github.com/fluent/fluent-logger-golang v1.9.0 h1:zUdY44CHX2oIUc7VTNZc+4m+ORuO/mldQDA7czhWXEg=
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