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Copy pathconsole.go
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187 lines (156 loc) · 4.56 KB
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/*
* MinIO Cloud Storage, (C) 2018 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 logger
import (
"encoding/json"
"fmt"
"os"
"strings"
"time"
"github.com/minio/minio/cmd/logger/message/log"
"github.com/minio/minio/pkg/color"
c "github.com/minio/minio/pkg/console"
)
// Logger interface describes the methods that need to be implemented to satisfy the interface requirements.
type Logger interface {
json(msg string, args ...interface{})
quiet(msg string, args ...interface{})
pretty(msg string, args ...interface{})
}
func consoleLog(console Logger, msg string, args ...interface{}) {
switch {
case jsonFlag:
// Strip escape control characters from json message
msg = ansiRE.ReplaceAllLiteralString(msg, "")
console.json(msg, args...)
case quietFlag:
console.quiet(msg, args...)
default:
console.pretty(msg, args...)
}
}
// Fatal prints only fatal error message with no stack trace
// it will be called for input validation failures
func Fatal(err error, msg string, data ...interface{}) {
fatal(err, msg, data...)
}
func fatal(err error, msg string, data ...interface{}) {
var errMsg string
if msg != "" {
errMsg = errorFmtFunc(fmt.Sprintf(msg, data...), err, jsonFlag)
} else {
errMsg = err.Error()
}
consoleLog(fatalMessage, errMsg)
}
var fatalMessage fatalMsg
type fatalMsg struct {
}
func (f fatalMsg) json(msg string, args ...interface{}) {
logJSON, err := json.Marshal(&log.Entry{
Level: FatalLvl.String(),
Time: time.Now().UTC().Format(time.RFC3339Nano),
Trace: &log.Trace{Message: fmt.Sprintf(msg, args...), Source: []string{getSource(6)}},
})
if err != nil {
panic(err)
}
fmt.Println(string(logJSON))
os.Exit(1)
}
func (f fatalMsg) quiet(msg string, args ...interface{}) {
f.pretty(msg, args...)
}
var (
logTag = "ERROR"
logBanner = color.BgRed(color.FgWhite(color.Bold(logTag))) + " "
emptyBanner = color.BgRed(strings.Repeat(" ", len(logTag))) + " "
bannerWidth = len(logTag) + 1
)
func (f fatalMsg) pretty(msg string, args ...interface{}) {
// Build the passed error message
errMsg := fmt.Sprintf(msg, args...)
tagPrinted := false
// Print the error message: the following code takes care
// of splitting error text and always pretty printing the
// red banner along with the error message. Since the error
// message itself contains some colored text, we needed
// to use some ANSI control escapes to cursor color state
// and freely move in the screen.
for _, line := range strings.Split(errMsg, "\n") {
if len(line) == 0 {
// No more text to print, just quit.
break
}
for {
// Save the attributes of the current cursor helps
// us save the text color of the passed error message
ansiSaveAttributes()
// Print banner with or without the log tag
if !tagPrinted {
c.Print(logBanner)
tagPrinted = true
} else {
c.Print(emptyBanner)
}
// Restore the text color of the error message
ansiRestoreAttributes()
ansiMoveRight(bannerWidth)
// Continue error message printing
c.Println(line)
break
}
}
// Exit because this is a fatal error message
os.Exit(1)
}
type infoMsg struct{}
var info infoMsg
func (i infoMsg) json(msg string, args ...interface{}) {
logJSON, err := json.Marshal(&log.Entry{
Level: InformationLvl.String(),
Message: fmt.Sprintf(msg, args...),
Time: time.Now().UTC().Format(time.RFC3339Nano),
})
if err != nil {
panic(err)
}
fmt.Println(string(logJSON))
}
func (i infoMsg) quiet(msg string, args ...interface{}) {
i.pretty(msg, args...)
}
func (i infoMsg) pretty(msg string, args ...interface{}) {
c.Printf(msg, args...)
}
// Info :
func Info(msg string, data ...interface{}) {
consoleLog(info, msg+"\n", data...)
}
var startupMessage startUpMsg
type startUpMsg struct {
}
func (s startUpMsg) json(msg string, args ...interface{}) {
}
func (s startUpMsg) quiet(msg string, args ...interface{}) {
}
func (s startUpMsg) pretty(msg string, args ...interface{}) {
c.Printf(msg, args...)
}
// StartupMessage :
func StartupMessage(msg string, data ...interface{}) {
consoleLog(startupMessage, msg+"\n", data...)
}