mirror of https://github.com/minio/minio.git
124 lines
3.4 KiB
Go
124 lines
3.4 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
|
|
*
|
|
* 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 cmd
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"fmt"
|
|
"path"
|
|
"path/filepath"
|
|
"runtime"
|
|
"runtime/debug"
|
|
"strings"
|
|
|
|
"github.com/Sirupsen/logrus"
|
|
)
|
|
|
|
type fields map[string]interface{}
|
|
|
|
var log = logrus.New() // Default console logger.
|
|
|
|
// logger carries logging configuration for various supported loggers.
|
|
// Currently supported loggers are
|
|
//
|
|
// - console [default]
|
|
// - file
|
|
// - syslog
|
|
type logger struct {
|
|
Console consoleLogger `json:"console"`
|
|
File fileLogger `json:"file"`
|
|
Syslog syslogLogger `json:"syslog"`
|
|
// Add new loggers here.
|
|
}
|
|
|
|
// Function takes input with the results from runtime.Caller(1). Depending on the boolean.
|
|
// This function can either returned a shotFile form or a longFile form.
|
|
func funcFromPC(pc uintptr, file string, line int, shortFile bool) string {
|
|
var fn, name string
|
|
if shortFile {
|
|
fn = strings.Replace(file, path.Join(filepath.ToSlash(GOPATH)+"/src/github.com/minio/minio/cmd/")+"/", "", -1)
|
|
name = strings.Replace(runtime.FuncForPC(pc).Name(), "github.com/minio/minio/cmd.", "", -1)
|
|
} else {
|
|
fn = strings.Replace(file, path.Join(filepath.ToSlash(GOPATH)+"/src/")+"/", "", -1)
|
|
name = strings.Replace(runtime.FuncForPC(pc).Name(), "github.com/minio/minio/cmd.", "", -1)
|
|
}
|
|
return fmt.Sprintf("%s [%s:%d]", name, fn, line)
|
|
}
|
|
|
|
// stackInfo returns printable stack trace.
|
|
func stackInfo() string {
|
|
// Convert stack-trace bytes to io.Reader.
|
|
rawStack := bufio.NewReader(bytes.NewBuffer(debug.Stack()))
|
|
// Skip stack trace lines until our real caller.
|
|
for i := 0; i <= 4; i++ {
|
|
rawStack.ReadLine()
|
|
}
|
|
|
|
// Read the rest of useful stack trace.
|
|
stackBuf := new(bytes.Buffer)
|
|
stackBuf.ReadFrom(rawStack)
|
|
|
|
// Strip GOPATH of the build system and return.
|
|
return strings.Replace(stackBuf.String(), filepath.ToSlash(GOPATH)+"/src/", "", -1)
|
|
}
|
|
|
|
// Get file, line, function name of the caller.
|
|
func callerLocation() string {
|
|
pc, file, line, success := runtime.Caller(2)
|
|
if !success {
|
|
file = "<unknown>"
|
|
line = 0
|
|
}
|
|
shortFile := true // We are only interested in short file form.
|
|
callerLoc := funcFromPC(pc, file, line, shortFile)
|
|
return callerLoc
|
|
}
|
|
|
|
// errorIf synonymous with fatalIf but doesn't exit on error != nil
|
|
func errorIf(err error, msg string, data ...interface{}) {
|
|
if err == nil {
|
|
return
|
|
}
|
|
location := callerLocation()
|
|
fields := logrus.Fields{
|
|
"location": location,
|
|
"cause": err.Error(),
|
|
}
|
|
if e, ok := err.(*Error); ok {
|
|
fields["stack"] = strings.Join(e.Trace(), " ")
|
|
}
|
|
|
|
log.WithFields(fields).Errorf(msg, data...)
|
|
}
|
|
|
|
// fatalIf wrapper function which takes error and prints jsonic error messages.
|
|
func fatalIf(err error, msg string, data ...interface{}) {
|
|
if err == nil {
|
|
return
|
|
}
|
|
location := callerLocation()
|
|
fields := logrus.Fields{
|
|
"location": location,
|
|
"cause": err.Error(),
|
|
}
|
|
if globalTrace {
|
|
fields["stack"] = "\n" + stackInfo()
|
|
}
|
|
log.WithFields(fields).Fatalf(msg, data...)
|
|
}
|