122 lines
3.1 KiB
Go
122 lines
3.1 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 main
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import (
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"bufio"
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"bytes"
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"os"
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"reflect"
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"runtime"
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"runtime/debug"
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"strconv"
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"strings"
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"github.com/Sirupsen/logrus"
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"github.com/dustin/go-humanize"
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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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//
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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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// sysInfo returns useful system statistics.
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func sysInfo() map[string]string {
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host, err := os.Hostname()
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if err != nil {
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host = ""
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}
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memstats := &runtime.MemStats{}
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runtime.ReadMemStats(memstats)
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return map[string]string{
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"host.name": host,
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"host.os": runtime.GOOS,
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"host.arch": runtime.GOARCH,
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"host.lang": runtime.Version(),
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"host.cpus": strconv.Itoa(runtime.NumCPU()),
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"mem.used": humanize.Bytes(memstats.Alloc),
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"mem.total": humanize.Bytes(memstats.Sys),
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"mem.heap.used": humanize.Bytes(memstats.HeapAlloc),
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"mem.heap.total": humanize.Bytes(memstats.HeapSys),
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}
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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(), minioGOPATH+"/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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sysInfo := sysInfo()
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fields := logrus.Fields{
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"cause": err.Error(),
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"type": reflect.TypeOf(err),
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"sysInfo": sysInfo,
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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).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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sysInfo := sysInfo()
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fields := logrus.Fields{
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"cause": err.Error(),
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"type": reflect.TypeOf(err),
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"sysInfo": sysInfo,
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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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