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https://github.com/chainguard-dev/clog
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f4145d29d4
Modification of #5 Allows for passing through the logger while still using default Info methods. InfoContext remains to override the context with another value. This changes the stored context value to store the underlying slog.Logger instead of the wrapped logger so we're not storing a context within a context.
58 lines
1.6 KiB
Go
58 lines
1.6 KiB
Go
package clog_test
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import (
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"context"
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"log/slog"
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"os"
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"github.com/chainguard-dev/clog"
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"github.com/chainguard-dev/clog/slogtest"
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)
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func ExampleHandler() {
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log := slog.New(clog.NewHandler(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
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// Remove time for repeatable results
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ReplaceAttr: slogtest.RemoveTime,
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})))
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ctx := context.Background()
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ctx = clog.WithValues(ctx, "foo", "bar")
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log.InfoContext(ctx, "hello world", slog.Bool("baz", true))
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// Output:
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// level=INFO msg="hello world" baz=true foo=bar
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}
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func ExampleLogger() {
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log := clog.NewLogger(slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
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// Remove time for repeatable results
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ReplaceAttr: slogtest.RemoveTime,
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})))
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log = log.With("a", "b")
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ctx := clog.WithLogger(context.Background(), log)
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// Grab logger from context and use
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// Note: this is a formatter aware method, not an slog.Attr method.
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clog.FromContext(ctx).With("foo", "bar").Infof("hello %s", "world")
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// Package level context loggers are also aware
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clog.ErrorContext(ctx, "asdf", slog.Bool("baz", true))
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// Output:
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// level=INFO msg="hello world" a=b foo=bar
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// level=ERROR msg=asdf a=b baz=true
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}
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func ExampleFromContext_preserveContext() {
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log := clog.NewLogger(slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
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// Remove time for repeatable results
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ReplaceAttr: slogtest.RemoveTime,
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}))).With("foo", "bar")
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ctx := clog.WithLogger(context.Background(), log)
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// Previous context values are preserved when using FromContext
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clog.FromContext(ctx).Info("hello world")
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// Output:
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// level=INFO msg="hello world" foo=bar
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}
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