71 lines
2.4 KiB
Go
71 lines
2.4 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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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"unsafe"
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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 is the logging interface used within the otel api and sdk provide details of the internals.
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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 unsafe.Pointer
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func init() {
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SetLogger(stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile)))
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}
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// SetLogger overrides the globalLogger with 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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atomic.StorePointer(&globalLogger, unsafe.Pointer(&l))
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}
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func getLogger() logr.Logger {
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return *(*logr.Logger)(atomic.LoadPointer(&globalLogger))
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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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