187 lines
4.6 KiB
Go
187 lines
4.6 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2018 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 logger
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import (
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"encoding/json"
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"fmt"
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"os"
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"strings"
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"time"
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"github.com/minio/minio/cmd/logger/message/log"
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"github.com/minio/minio/pkg/color"
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c "github.com/minio/minio/pkg/console"
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)
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// Logger interface describes the methods that need to be implemented to satisfy the interface requirements.
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type Logger interface {
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json(msg string, args ...interface{})
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quiet(msg string, args ...interface{})
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pretty(msg string, args ...interface{})
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}
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func consoleLog(console Logger, msg string, args ...interface{}) {
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switch {
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case jsonFlag:
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// Strip escape control characters from json message
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msg = ansiRE.ReplaceAllLiteralString(msg, "")
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console.json(msg, args...)
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case quietFlag:
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console.quiet(msg, args...)
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default:
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console.pretty(msg, args...)
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}
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}
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// Fatal prints only fatal error message with no stack trace
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// it will be called for input validation failures
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func Fatal(err error, msg string, data ...interface{}) {
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fatal(err, msg, data...)
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}
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func fatal(err error, msg string, data ...interface{}) {
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var errMsg string
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if msg != "" {
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errMsg = errorFmtFunc(fmt.Sprintf(msg, data...), err, jsonFlag)
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} else {
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errMsg = err.Error()
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}
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consoleLog(fatalMessage, errMsg)
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}
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var fatalMessage fatalMsg
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type fatalMsg struct {
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}
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func (f fatalMsg) json(msg string, args ...interface{}) {
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logJSON, err := json.Marshal(&log.Entry{
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Level: FatalLvl.String(),
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Time: time.Now().UTC().Format(time.RFC3339Nano),
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Trace: &log.Trace{Message: fmt.Sprintf(msg, args...), Source: []string{getSource(6)}},
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})
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if err != nil {
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panic(err)
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}
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fmt.Println(string(logJSON))
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os.Exit(1)
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}
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func (f fatalMsg) quiet(msg string, args ...interface{}) {
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f.pretty(msg, args...)
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}
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var (
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logTag = "ERROR"
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logBanner = color.BgRed(color.FgWhite(color.Bold(logTag))) + " "
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emptyBanner = color.BgRed(strings.Repeat(" ", len(logTag))) + " "
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bannerWidth = len(logTag) + 1
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)
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func (f fatalMsg) pretty(msg string, args ...interface{}) {
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// Build the passed error message
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errMsg := fmt.Sprintf(msg, args...)
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tagPrinted := false
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// Print the error message: the following code takes care
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// of splitting error text and always pretty printing the
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// red banner along with the error message. Since the error
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// message itself contains some colored text, we needed
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// to use some ANSI control escapes to cursor color state
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// and freely move in the screen.
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for _, line := range strings.Split(errMsg, "\n") {
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if len(line) == 0 {
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// No more text to print, just quit.
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break
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}
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for {
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// Save the attributes of the current cursor helps
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// us save the text color of the passed error message
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ansiSaveAttributes()
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// Print banner with or without the log tag
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if !tagPrinted {
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c.Print(logBanner)
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tagPrinted = true
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} else {
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c.Print(emptyBanner)
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}
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// Restore the text color of the error message
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ansiRestoreAttributes()
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ansiMoveRight(bannerWidth)
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// Continue error message printing
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c.Println(line)
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break
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}
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}
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// Exit because this is a fatal error message
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os.Exit(1)
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}
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type infoMsg struct{}
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var info infoMsg
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func (i infoMsg) json(msg string, args ...interface{}) {
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logJSON, err := json.Marshal(&log.Entry{
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Level: InformationLvl.String(),
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Message: fmt.Sprintf(msg, args...),
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Time: time.Now().UTC().Format(time.RFC3339Nano),
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})
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if err != nil {
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panic(err)
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}
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fmt.Println(string(logJSON))
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}
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func (i infoMsg) quiet(msg string, args ...interface{}) {
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i.pretty(msg, args...)
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}
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func (i infoMsg) pretty(msg string, args ...interface{}) {
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c.Printf(msg, args...)
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}
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// Info :
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func Info(msg string, data ...interface{}) {
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consoleLog(info, msg+"\n", data...)
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}
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var startupMessage startUpMsg
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type startUpMsg struct {
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}
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func (s startUpMsg) json(msg string, args ...interface{}) {
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}
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func (s startUpMsg) quiet(msg string, args ...interface{}) {
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}
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func (s startUpMsg) pretty(msg string, args ...interface{}) {
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c.Printf(msg, args...)
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}
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// StartupMessage :
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func StartupMessage(msg string, data ...interface{}) {
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consoleLog(startupMessage, msg+"\n", data...)
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}
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