82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
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/*
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* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
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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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*/
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package logger
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import (
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"context"
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"sync"
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"time"
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)
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// Holds a map of recently logged errors.
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type logOnceType struct {
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IDMap map[interface{}]error
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sync.Mutex
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}
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// One log message per error.
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func (l *logOnceType) logOnceIf(ctx context.Context, err error, id interface{}, errKind ...interface{}) {
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if err == nil {
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return
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}
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l.Lock()
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shouldLog := false
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prevErr := l.IDMap[id]
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if prevErr == nil {
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l.IDMap[id] = err
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shouldLog = true
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} else {
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if prevErr.Error() != err.Error() {
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l.IDMap[id] = err
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shouldLog = true
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}
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}
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l.Unlock()
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if shouldLog {
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LogIf(ctx, err, errKind...)
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}
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}
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// Cleanup the map every 30 minutes so that the log message is printed again for the user to notice.
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func (l *logOnceType) cleanupRoutine() {
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for {
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l.Lock()
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l.IDMap = make(map[interface{}]error)
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l.Unlock()
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time.Sleep(30 * time.Minute)
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}
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}
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// Returns logOnceType
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func newLogOnceType() *logOnceType {
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l := &logOnceType{IDMap: make(map[interface{}]error)}
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go l.cleanupRoutine()
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return l
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}
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var logOnce = newLogOnceType()
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// LogOnceIf - Logs notification errors - once per error.
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// id is a unique identifier for related log messages, refer to cmd/notification.go
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// on how it is used.
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func LogOnceIf(ctx context.Context, err error, id interface{}, errKind ...interface{}) {
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logOnce.logOnceIf(ctx, err, id, errKind...)
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}
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