5

Change-Id: I8dc2a9e008e945e7338b3f1ab14216c99442f15e

Author: callthingsoff

src/log/slog/example_multi_handler_test.go

@@ -0,0 +1,39 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package slog_test
+
+import (
+	"bytes"
+	"log/slog"
+	"os"
+)
+
+func ExampleMultiHandler() {
+	removeTime := func(groups []string, a slog.Attr) slog.Attr {
+		if a.Key == slog.TimeKey && len(groups) == 0 {
+			return slog.Attr{}
+		}
+		return a
+	}
+
+	var textBuf, jsonBuf bytes.Buffer
+	textHandler := slog.NewTextHandler(&textBuf, &slog.HandlerOptions{ReplaceAttr: removeTime})
+	jsonHandler := slog.NewJSONHandler(&jsonBuf, &slog.HandlerOptions{ReplaceAttr: removeTime})
+
+	multiHandler := slog.MultiHandler(textHandler, jsonHandler)
+	logger := slog.New(multiHandler)
+
+	logger.Info("login",
+		slog.String("name", "whoami"),
+		slog.Int("id", 42),
+	)
+
+	os.Stdout.WriteString(textBuf.String())
+	os.Stdout.WriteString(jsonBuf.String())
+
+	// Output:
+	// level=INFO msg=login name=whoami id=42
+	// {"level":"INFO","msg":"login","name":"whoami","id":42}
+}