107 lines
3 KiB
Go
107 lines
3 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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"bufio"
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"bytes"
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"fmt"
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"path/filepath"
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"runtime"
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"runtime/debug"
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"strings"
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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 = logrus.New() // Default console logger.
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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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// - syslog
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type logger struct {
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Console consoleLogger `json:"console"`
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File fileLogger `json:"file"`
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Syslog syslogLogger `json:"syslog"`
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// Add new loggers here.
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}
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// Function takes input with the results from runtime.Caller(1). Depending on the boolean.
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// This function can either returned a shotFile form or a longFile form.
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func funcFromPC(pc uintptr, file string, line int, shortFile bool) string {
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var fn, name string
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if shortFile {
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fn = strings.Replace(file, filepath.ToSlash(GOPATH)+"/src/github.com/minio/minio/cmd/", "", -1)
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name = strings.Replace(runtime.FuncForPC(pc).Name(), "github.com/minio/minio/cmd.", "", -1)
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} else {
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fn = strings.Replace(file, filepath.ToSlash(GOPATH)+"/src/", "", -1)
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name = strings.Replace(runtime.FuncForPC(pc).Name(), "github.com/minio/minio/cmd.", "", -1)
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}
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return fmt.Sprintf("%s [%s:%d]", name, fn, line)
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}
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// stackInfo returns printable stack trace.
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func stackInfo() string {
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// Convert stack-trace bytes to io.Reader.
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rawStack := bufio.NewReader(bytes.NewBuffer(debug.Stack()))
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// Skip stack trace lines until our real caller.
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for i := 0; i <= 4; i++ {
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rawStack.ReadLine()
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}
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// Read the rest of useful stack trace.
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stackBuf := new(bytes.Buffer)
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stackBuf.ReadFrom(rawStack)
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// Strip GOPATH of the build system and return.
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return strings.Replace(stackBuf.String(), filepath.ToSlash(GOPATH)+"/src/", "", -1)
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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 {
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return
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}
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fields := logrus.Fields{
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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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log.WithFields(fields).Errorf(msg, data...)
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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 {
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return
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}
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fields := logrus.Fields{
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"cause": err.Error(),
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}
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if globalTrace {
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fields["stack"] = "\n" + stackInfo()
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}
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log.WithFields(fields).Fatalf(msg, data...)
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}
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