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62 lines
1.9 KiB
62 lines
1.9 KiB
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package global // import "go.opentelemetry.io/otel/internal/global"
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import (
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"log"
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"os"
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"sync/atomic"
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"github.com/go-logr/logr"
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"github.com/go-logr/stdr"
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)
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// globalLogger holds a reference to the [logr.Logger] used within
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// go.opentelemetry.io/otel.
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//
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// The default logger uses stdr which is backed by the standard `log.Logger`
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// interface. This logger will only show messages at the Error Level.
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var globalLogger = func() *atomic.Pointer[logr.Logger] {
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l := stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile))
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p := new(atomic.Pointer[logr.Logger])
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p.Store(&l)
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return p
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}()
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// SetLogger sets the global Logger to l.
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//
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// To see Warn messages use a logger with `l.V(1).Enabled() == true`
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// To see Info messages use a logger with `l.V(4).Enabled() == true`
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// To see Debug messages use a logger with `l.V(8).Enabled() == true`.
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func SetLogger(l logr.Logger) {
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globalLogger.Store(&l)
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}
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// GetLogger returns the global logger.
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func GetLogger() logr.Logger {
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return *globalLogger.Load()
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}
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// Info prints messages about the general state of the API or SDK.
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// This should usually be less than 5 messages a minute.
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func Info(msg string, keysAndValues ...interface{}) {
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GetLogger().V(4).Info(msg, keysAndValues...)
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}
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// Error prints messages about exceptional states of the API or SDK.
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func Error(err error, msg string, keysAndValues ...interface{}) {
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GetLogger().Error(err, msg, keysAndValues...)
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}
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// Debug prints messages about all internal changes in the API or SDK.
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func Debug(msg string, keysAndValues ...interface{}) {
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GetLogger().V(8).Info(msg, keysAndValues...)
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}
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// Warn prints messages about warnings in the API or SDK.
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// Not an error but is likely more important than an informational event.
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func Warn(msg string, keysAndValues ...interface{}) {
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GetLogger().V(1).Info(msg, keysAndValues...)
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}
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