mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-22 21:10:22 +00:00
5762da3e91
updating go dependency to latest kubernetes released version i.e v1.23.0 Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
// Package log contains utilities for fetching a new logger
|
|
// when one is not already available.
|
|
//
|
|
// The Log Handle
|
|
//
|
|
// This package contains a root logr.Logger Log. It may be used to
|
|
// get a handle to whatever the root logging implementation is. By
|
|
// default, no implementation exists, and the handle returns "promises"
|
|
// to loggers. When the implementation is set using SetLogger, these
|
|
// "promises" will be converted over to real loggers.
|
|
//
|
|
// Logr
|
|
//
|
|
// All logging in controller-runtime is structured, using a set of interfaces
|
|
// defined by a package called logr
|
|
// (https://godoc.org/github.com/go-logr/logr). The sub-package zap provides
|
|
// helpers for setting up logr backed by Zap (go.uber.org/zap).
|
|
package log
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/go-logr/logr"
|
|
)
|
|
|
|
// SetLogger sets a concrete logging implementation for all deferred Loggers.
|
|
func SetLogger(l logr.Logger) {
|
|
loggerWasSetLock.Lock()
|
|
defer loggerWasSetLock.Unlock()
|
|
|
|
loggerWasSet = true
|
|
dlog.Fulfill(l.GetSink())
|
|
}
|
|
|
|
// It is safe to assume that if this wasn't set within the first 30 seconds of a binaries
|
|
// lifetime, it will never get set. The DelegatingLogSink causes a high number of memory
|
|
// allocations when not given an actual Logger, so we set a NullLogSink to avoid that.
|
|
//
|
|
// We need to keep the DelegatingLogSink because we have various inits() that get a logger from
|
|
// here. They will always get executed before any code that imports controller-runtime
|
|
// has a chance to run and hence to set an actual logger.
|
|
func init() {
|
|
// Init is blocking, so start a new goroutine
|
|
go func() {
|
|
time.Sleep(30 * time.Second)
|
|
loggerWasSetLock.Lock()
|
|
defer loggerWasSetLock.Unlock()
|
|
if !loggerWasSet {
|
|
dlog.Fulfill(NullLogSink{})
|
|
}
|
|
}()
|
|
}
|
|
|
|
var (
|
|
loggerWasSetLock sync.Mutex
|
|
loggerWasSet bool
|
|
)
|
|
|
|
// Log is the base logger used by kubebuilder. It delegates
|
|
// to another logr.Logger. You *must* call SetLogger to
|
|
// get any actual logging. If SetLogger is not called within
|
|
// the first 30 seconds of a binaries lifetime, it will get
|
|
// set to a NullLogSink.
|
|
var (
|
|
dlog = NewDelegatingLogSink(NullLogSink{})
|
|
Log = logr.New(dlog)
|
|
)
|
|
|
|
// FromContext returns a logger with predefined values from a context.Context.
|
|
func FromContext(ctx context.Context, keysAndValues ...interface{}) logr.Logger {
|
|
log := Log
|
|
if ctx != nil {
|
|
if logger, err := logr.FromContext(ctx); err == nil {
|
|
log = logger
|
|
}
|
|
}
|
|
return log.WithValues(keysAndValues...)
|
|
}
|
|
|
|
// IntoContext takes a context and sets the logger as one of its values.
|
|
// Use FromContext function to retrieve the logger.
|
|
func IntoContext(ctx context.Context, log logr.Logger) context.Context {
|
|
return logr.NewContext(ctx, log)
|
|
}
|