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9341201132
This PR simplifies few things by splitting the locks between audit, logger targets to avoid potential contention between them. any failures inside audit/logger HTTP targets must only log to console instead of other targets to avoid cyclical dependency. avoids unneeded atomic variables instead uses RWLock to differentiate a more common read phase v/s lock phase.
132 lines
3.1 KiB
Go
132 lines
3.1 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package logger
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import (
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"context"
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"errors"
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"net/http"
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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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func (l *logOnceType) logOnceConsoleIf(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 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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l.Unlock()
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if shouldLog {
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consoleLogIf(ctx, err, errKind...)
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}
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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 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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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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if err == nil {
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return
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}
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if errors.Is(err, context.Canceled) {
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return
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}
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if err.Error() == http.ErrServerClosed.Error() || err.Error() == "disk not found" {
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return
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}
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logOnce.logOnceIf(ctx, err, id, errKind...)
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}
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// LogOnceConsoleIf - similar to LogOnceIf but exclusively only logs to console target.
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func LogOnceConsoleIf(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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if errors.Is(err, context.Canceled) {
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return
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}
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if err.Error() == http.ErrServerClosed.Error() || err.Error() == "disk not found" {
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return
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}
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logOnce.logOnceConsoleIf(ctx, err, id, errKind...)
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}
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