mirror of https://github.com/minio/minio.git
144 lines
3.2 KiB
Go
144 lines
3.2 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016 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 cmd
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import (
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"fmt"
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"path"
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"runtime"
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"strings"
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"sync"
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"github.com/Sirupsen/logrus"
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)
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type fields map[string]interface{}
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var log = struct {
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loggers []*logrus.Logger // All registered loggers.
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mu sync.Mutex
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}{}
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// logger carries logging configuration for various supported loggers.
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// Currently supported loggers are
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//
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// - console [default]
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// - file
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type logger struct {
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sync.RWMutex
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Console consoleLogger `json:"console"`
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File fileLogger `json:"file"`
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// Add new loggers here.
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}
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/// Logger related.
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// SetFile set new file logger.
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func (l *logger) SetFile(flogger fileLogger) {
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l.Lock()
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defer l.Unlock()
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l.File = flogger
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}
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// GetFileLogger get current file logger.
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func (l *logger) GetFile() fileLogger {
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l.RLock()
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defer l.RUnlock()
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return l.File
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}
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// SetConsole set new console logger.
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func (l *logger) SetConsole(clogger consoleLogger) {
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l.Lock()
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defer l.Unlock()
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l.Console = clogger
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}
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func (l *logger) GetConsole() consoleLogger {
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l.RLock()
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defer l.RUnlock()
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return l.Console
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}
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// Get file, line, function name of the caller.
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func callerSource() string {
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pc, file, line, success := runtime.Caller(2)
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if !success {
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file = "<unknown>"
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line = 0
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}
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file = path.Base(file)
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name := runtime.FuncForPC(pc).Name()
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name = strings.TrimPrefix(name, "github.com/minio/minio/cmd.")
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return fmt.Sprintf("[%s:%d:%s()]", file, line, name)
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}
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// errorIf synonymous with fatalIf but doesn't exit on error != nil
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func errorIf(err error, msg string, data ...interface{}) {
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if err == nil || !isErrLogged(err) {
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return
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}
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source := callerSource()
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fields := logrus.Fields{
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"source": source,
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"cause": err.Error(),
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}
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if e, ok := err.(*Error); ok {
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fields["stack"] = strings.Join(e.Trace(), " ")
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}
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for _, log := range log.loggers {
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log.WithFields(fields).Errorf(msg, data...)
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}
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}
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// fatalIf wrapper function which takes error and prints jsonic error messages.
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func fatalIf(err error, msg string, data ...interface{}) {
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if err == nil || !isErrLogged(err) {
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return
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}
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source := callerSource()
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fields := logrus.Fields{
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"source": source,
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"cause": err.Error(),
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}
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if e, ok := err.(*Error); ok {
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fields["stack"] = strings.Join(e.Trace(), " ")
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}
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for _, log := range log.loggers {
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log.WithFields(fields).Fatalf(msg, data...)
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}
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}
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// returns false if error is not supposed to be logged.
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func isErrLogged(err error) (ok bool) {
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ok = true
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err = errorCause(err)
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switch err.(type) {
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case BucketNotFound, BucketNotEmpty, BucketExists:
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ok = false
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case ObjectNotFound, ObjectExistsAsDirectory:
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ok = false
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case BucketPolicyNotFound, InvalidUploadID:
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ok = false
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case BadDigest:
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ok = false
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}
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return ok
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}
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