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Refactor Logger (#13294) 

Refactor Logger to make a logger interface and make it possible to
wrap loggers for specific purposes.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
zeripath 2020-10-31 05:36:46 +00:00 committed by GitHub
parent ffc8ce7bae
commit 47dd1cb7ae
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 215 additions and 116 deletions
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2
models/log.go
View File

@ -15,7 +15,7 @@ import (
// XORMLogBridge a logger bridge from Logger to xorm
type XORMLogBridge struct {
showSQL bool
logger *log.Logger
logger log.Logger
}
// NewXORMLogger inits a log bridge for xorm

2
modules/indexer/code/elastic_search.go
View File

@ -40,7 +40,7 @@ type ElasticSearchIndexer struct {
}
type elasticLogger struct {
*log.Logger
log.Logger
}
func (l elasticLogger) Printf(format string, args ...interface{}) {

4
modules/indexer/issues/elastic_search.go
View File

@ -27,11 +27,11 @@ type ElasticSearchIndexer struct {
}
type elasticLogger struct {
*log.Logger
log.LevelLogger
}
func (l elasticLogger) Printf(format string, args ...interface{}) {
_ = l.Logger.Log(2, l.Logger.GetLevel(), format, args...)
_ = l.Log(2, l.GetLevel(), format, args...)
}
// NewElasticSearchIndexer creates a new elasticsearch indexer

18
modules/log/colors.go
View File

@ -158,15 +158,15 @@ func ColorBytes(attrs ...ColorAttribute) []byte {
return bytes
}
var levelToColor = map[Level]string{
TRACE: ColorString(Bold, FgCyan),
DEBUG: ColorString(Bold, FgBlue),
INFO: ColorString(Bold, FgGreen),
WARN: ColorString(Bold, FgYellow),
ERROR: ColorString(Bold, FgRed),
CRITICAL: ColorString(Bold, BgMagenta),
FATAL: ColorString(Bold, BgRed),
NONE: ColorString(Reset),
var levelToColor = map[Level][]byte{
TRACE: ColorBytes(Bold, FgCyan),
DEBUG: ColorBytes(Bold, FgBlue),
INFO: ColorBytes(Bold, FgGreen),
WARN: ColorBytes(Bold, FgYellow),
ERROR: ColorBytes(Bold, FgRed),
CRITICAL: ColorBytes(Bold, BgMagenta),
FATAL: ColorBytes(Bold, BgRed),
NONE: ColorBytes(Reset),
}
var resetBytes = ColorBytes(Reset)

10
modules/log/level.go
View File

@ -73,6 +73,16 @@ func (l Level) String() string {
return "info"
}
// Color returns the color string for this Level
func (l Level) Color() *[]byte {
color, ok := levelToColor[l]
if ok {
return &(color)
}
none := levelToColor[NONE]
return &none
}
// MarshalJSON takes a Level and turns it into text
func (l Level) MarshalJSON() ([]byte, error) {
buffer := bytes.NewBufferString(`"`)

22
modules/log/log.go
View File

@ -16,16 +16,16 @@ type loggerMap struct {
sync.Map
}
func (m *loggerMap) Load(k string) (*Logger, bool) {
func (m *loggerMap) Load(k string) (*MultiChannelledLogger, bool) {
v, ok := m.Map.Load(k)
if !ok {
return nil, false
}
l, ok := v.(*Logger)
l, ok := v.(*MultiChannelledLogger)
return l, ok
}
func (m *loggerMap) Store(k string, v *Logger) {
func (m *loggerMap) Store(k string, v *MultiChannelledLogger) {
m.Map.Store(k, v)
}
@ -42,7 +42,7 @@ var (
)
// NewLogger create a logger for the default logger
func NewLogger(bufLen int64, name, provider, config string) *Logger {
func NewLogger(bufLen int64, name, provider, config string) *MultiChannelledLogger {
err := NewNamedLogger(DEFAULT, bufLen, name, provider, config)
if err != nil {
CriticalWithSkip(1, "Unable to create default logger: %v", err)
@ -83,7 +83,7 @@ func DelLogger(name string) error {
}
// GetLogger returns either a named logger or the default logger
func GetLogger(name string) *Logger {
func GetLogger(name string) *MultiChannelledLogger {
logger, ok := NamedLoggers.Load(name)
if ok {
return logger
@ -196,7 +196,7 @@ func IsFatal() bool {
// Pause pauses all the loggers
func Pause() {
NamedLoggers.Range(func(key, value interface{}) bool {
logger := value.(*Logger)
logger := value.(*MultiChannelledLogger)
logger.Pause()
logger.Flush()
return true
@ -206,7 +206,7 @@ func Pause() {
// Resume resumes all the loggers
func Resume() {
NamedLoggers.Range(func(key, value interface{}) bool {
logger := value.(*Logger)
logger := value.(*MultiChannelledLogger)
logger.Resume()
return true
})
@ -216,7 +216,7 @@ func Resume() {
func ReleaseReopen() error {
var accumulatedErr error
NamedLoggers.Range(func(key, value interface{}) bool {
logger := value.(*Logger)
logger := value.(*MultiChannelledLogger)
if err := logger.ReleaseReopen(); err != nil {
if accumulatedErr == nil {
accumulatedErr = fmt.Errorf("Error reopening %s: %v", key.(string), err)
@ -250,15 +250,15 @@ func Log(skip int, level Level, format string, v ...interface{}) {
// LoggerAsWriter is a io.Writer shim around the gitea log
type LoggerAsWriter struct {
ourLoggers []*Logger
ourLoggers []*MultiChannelledLogger
level Level
}
// NewLoggerAsWriter creates a Writer representation of the logger with setable log level
func NewLoggerAsWriter(level string, ourLoggers ...*Logger) *LoggerAsWriter {
func NewLoggerAsWriter(level string, ourLoggers ...*MultiChannelledLogger) *LoggerAsWriter {
if len(ourLoggers) == 0 {
l, _ := NamedLoggers.Load(DEFAULT)
ourLoggers = []*Logger{l}
ourLoggers = []*MultiChannelledLogger{l}
}
l := &LoggerAsWriter{
ourLoggers: ourLoggers,

2
modules/log/log_test.go
View File

@ -11,7 +11,7 @@ import (
"github.com/stretchr/testify/assert"
)
func baseConsoleTest(t *testing.T, logger *Logger) (chan []byte, chan bool) {
func baseConsoleTest(t *testing.T, logger *MultiChannelledLogger) (chan []byte, chan bool) {
written := make(chan []byte)
closed := make(chan bool)

173
modules/log/logger.go
View File

@ -4,149 +4,140 @@
package log
import (
"fmt"
"os"
"runtime"
"strings"
"time"
)
import "os"
// Logger is default logger in the Gitea application.
// it can contain several providers and log message into all providers.
type Logger struct {
*MultiChannelledLog
bufferLength int64
// Logger is the basic interface for logging
type Logger interface {
LevelLogger
Trace(format string, v ...interface{})
IsTrace() bool
Debug(format string, v ...interface{})
IsDebug() bool
Info(format string, v ...interface{})
IsInfo() bool
Warn(format string, v ...interface{})
IsWarn() bool
Error(format string, v ...interface{})
ErrorWithSkip(skip int, format string, v ...interface{})
IsError() bool
Critical(format string, v ...interface{})
CriticalWithSkip(skip int, format string, v ...interface{})
IsCritical() bool
Fatal(format string, v ...interface{})
FatalWithSkip(skip int, format string, v ...interface{})
IsFatal() bool
}
// newLogger initializes and returns a new logger.
func newLogger(name string, buffer int64) *Logger {
l := &Logger{
MultiChannelledLog: NewMultiChannelledLog(name, buffer),
bufferLength: buffer,
}
return l
// LevelLogger is the simplest logging interface
type LevelLogger interface {
Flush()
Close()
GetLevel() Level
Log(skip int, level Level, format string, v ...interface{}) error
}
// SetLogger sets new logger instance with given logger provider and config.
func (l *Logger) SetLogger(name, provider, config string) error {
eventLogger, err := NewChannelledLog(name, provider, config, l.bufferLength)
if err != nil {
return fmt.Errorf("Failed to create sublogger (%s): %v", name, err)
// SettableLogger is the interface of loggers which have subloggers
type SettableLogger interface {
SetLogger(name, provider, config string) error
DelLogger(name string) (bool, error)
}
l.MultiChannelledLog.DelLogger(name)
err = l.MultiChannelledLog.AddLogger(eventLogger)
if err != nil {
if IsErrDuplicateName(err) {
return fmt.Errorf("Duplicate named sublogger %s %v", name, l.MultiChannelledLog.GetEventLoggerNames())
}
return fmt.Errorf("Failed to add sublogger (%s): %v", name, err)
// StacktraceLogger is a logger that can log stacktraces
type StacktraceLogger interface {
GetStacktraceLevel() Level
}
return nil
}
// DelLogger deletes a sublogger from this logger.
func (l *Logger) DelLogger(name string) (bool, error) {
return l.MultiChannelledLog.DelLogger(name), nil
}
// Log msg at the provided level with the provided caller defined by skip (0 being the function that calls this function)
func (l *Logger) Log(skip int, level Level, format string, v ...interface{}) error {
if l.GetLevel() > level {
return nil
}
caller := "?()"
pc, filename, line, ok := runtime.Caller(skip + 1)
if ok {
// Get caller function name.
fn := runtime.FuncForPC(pc)
if fn != nil {
caller = fn.Name() + "()"
}
}
msg := format
if len(v) > 0 {
msg = ColorSprintf(format, v...)
}
stack := ""
if l.GetStacktraceLevel() <= level {
stack = Stack(skip + 1)
}
return l.SendLog(level, caller, strings.TrimPrefix(filename, prefix), line, msg, stack)
}
// SendLog sends a log event at the provided level with the information given
func (l *Logger) SendLog(level Level, caller, filename string, line int, msg string, stack string) error {
if l.GetLevel() > level {
return nil
}
event := &Event{
level: level,
caller: caller,
filename: filename,
line: line,
msg: msg,
time: time.Now(),
stacktrace: stack,
}
l.LogEvent(event)
return nil
// LevelLoggerLogger wraps a LevelLogger as a Logger
type LevelLoggerLogger struct {
LevelLogger
}
// Trace records trace log
func (l *Logger) Trace(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Trace(format string, v ...interface{}) {
l.Log(1, TRACE, format, v...)
}
// IsTrace returns true if the logger is TRACE
func (l *LevelLoggerLogger) IsTrace() bool {
return l.GetLevel() <= TRACE
}
// Debug records debug log
func (l *Logger) Debug(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Debug(format string, v ...interface{}) {
l.Log(1, DEBUG, format, v...)
}
// IsDebug returns true if the logger is DEBUG
func (l *LevelLoggerLogger) IsDebug() bool {
return l.GetLevel() <= DEBUG
}
// Info records information log
func (l *Logger) Info(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Info(format string, v ...interface{}) {
l.Log(1, INFO, format, v...)
}
// IsInfo returns true if the logger is INFO
func (l *LevelLoggerLogger) IsInfo() bool {
return l.GetLevel() <= INFO
}
// Warn records warning log
func (l *Logger) Warn(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Warn(format string, v ...interface{}) {
l.Log(1, WARN, format, v...)
}
// IsWarn returns true if the logger is WARN
func (l *LevelLoggerLogger) IsWarn() bool {
return l.GetLevel() <= WARN
}
// Error records error log
func (l *Logger) Error(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Error(format string, v ...interface{}) {
l.Log(1, ERROR, format, v...)
}
// ErrorWithSkip records error log from "skip" calls back from this function
func (l *Logger) ErrorWithSkip(skip int, format string, v ...interface{}) {
func (l *LevelLoggerLogger) ErrorWithSkip(skip int, format string, v ...interface{}) {
l.Log(skip+1, ERROR, format, v...)
}
// IsError returns true if the logger is ERROR
func (l *LevelLoggerLogger) IsError() bool {
return l.GetLevel() <= ERROR
}
// Critical records critical log
func (l *Logger) Critical(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Critical(format string, v ...interface{}) {
l.Log(1, CRITICAL, format, v...)
}
// CriticalWithSkip records critical log from "skip" calls back from this function
func (l *Logger) CriticalWithSkip(skip int, format string, v ...interface{}) {
func (l *LevelLoggerLogger) CriticalWithSkip(skip int, format string, v ...interface{}) {
l.Log(skip+1, CRITICAL, format, v...)
}
// IsCritical returns true if the logger is CRITICAL
func (l *LevelLoggerLogger) IsCritical() bool {
return l.GetLevel() <= CRITICAL
}
// Fatal records fatal log and exit the process
func (l *Logger) Fatal(format string, v ...interface{}) {
func (l *LevelLoggerLogger) Fatal(format string, v ...interface{}) {
l.Log(1, FATAL, format, v...)
l.Close()
os.Exit(1)
}
// FatalWithSkip records fatal log from "skip" calls back from this function and exits the process
func (l *Logger) FatalWithSkip(skip int, format string, v ...interface{}) {
func (l *LevelLoggerLogger) FatalWithSkip(skip int, format string, v ...interface{}) {
l.Log(skip+1, FATAL, format, v...)
l.Close()
os.Exit(1)
}
// IsFatal returns true if the logger is FATAL
func (l *LevelLoggerLogger) IsFatal() bool {
return l.GetLevel() <= FATAL
}

98
modules/log/multichannel.go Normal file
View File

@ -0,0 +1,98 @@
// Copyright 2020 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package log
import (
"fmt"
"runtime"
"strings"
"time"
)
// MultiChannelledLogger is default logger in the Gitea application.
// it can contain several providers and log message into all providers.
type MultiChannelledLogger struct {
LevelLoggerLogger
*MultiChannelledLog
bufferLength int64
}
// newLogger initializes and returns a new logger.
func newLogger(name string, buffer int64) *MultiChannelledLogger {
l := &MultiChannelledLogger{
MultiChannelledLog: NewMultiChannelledLog(name, buffer),
bufferLength: buffer,
}
l.LevelLogger = l
return l
}
// SetLogger sets new logger instance with given logger provider and config.
func (l *MultiChannelledLogger) SetLogger(name, provider, config string) error {
eventLogger, err := NewChannelledLog(name, provider, config, l.bufferLength)
if err != nil {
return fmt.Errorf("Failed to create sublogger (%s): %v", name, err)
}
l.MultiChannelledLog.DelLogger(name)
err = l.MultiChannelledLog.AddLogger(eventLogger)
if err != nil {
if IsErrDuplicateName(err) {
return fmt.Errorf("Duplicate named sublogger %s %v", name, l.MultiChannelledLog.GetEventLoggerNames())
}
return fmt.Errorf("Failed to add sublogger (%s): %v", name, err)
}
return nil
}
// DelLogger deletes a sublogger from this logger.
func (l *MultiChannelledLogger) DelLogger(name string) (bool, error) {
return l.MultiChannelledLog.DelLogger(name), nil
}
// Log msg at the provided level with the provided caller defined by skip (0 being the function that calls this function)
func (l *MultiChannelledLogger) Log(skip int, level Level, format string, v ...interface{}) error {
if l.GetLevel() > level {
return nil
}
caller := "?()"
pc, filename, line, ok := runtime.Caller(skip + 1)
if ok {
// Get caller function name.
fn := runtime.FuncForPC(pc)
if fn != nil {
caller = fn.Name() + "()"
}
}
msg := format
if len(v) > 0 {
msg = ColorSprintf(format, v...)
}
stack := ""
if l.GetStacktraceLevel() <= level {
stack = Stack(skip + 1)
}
return l.SendLog(level, caller, strings.TrimPrefix(filename, prefix), line, msg, stack)
}
// SendLog sends a log event at the provided level with the information given
func (l *MultiChannelledLogger) SendLog(level Level, caller, filename string, line int, msg string, stack string) error {
if l.GetLevel() > level {
return nil
}
event := &Event{
level: level,
caller: caller,
filename: filename,
line: line,
msg: msg,
time: time.Now(),
stacktrace: stack,
}
l.LogEvent(event)
return nil
}