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// Copyright 2013 Joe Walnes and the websocketd team.
// All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package libwebsocketd
import (
"sync"
"time"
)
type LogLevel int
const (
LogDebug = iota
LogTrace
LogAccess
LogInfo
LogError
LogFatal
LogNone = 126
LogUnknown = 127
)
type LogFunc func(logScope *LogScope, level LogLevel, levelName string, category string, msg string, args ...interface{})
type LogScope struct {
Parent *LogScope // Parent scope
MinLevel LogLevel // Minimum log level to write out.
Mutex *sync.Mutex // Should be shared across all LogScopes that write to the same destination.
Associated []AssocPair // Additional data associated with scope
LogFunc LogFunc
}
type AssocPair struct {
Key string
Value string
}
func (l *LogScope) Associate(key string, value string) {
l.Associated = append(l.Associated, AssocPair{key, value})
}
func (l *LogScope) Debug(category string, msg string, args ...interface{}) {
l.LogFunc(l, LogDebug, "DEBUG", category, msg, args...)
}
func (l *LogScope) Trace(category string, msg string, args ...interface{}) {
l.LogFunc(l, LogTrace, "TRACE", category, msg, args...)
}
func (l *LogScope) Access(category string, msg string, args ...interface{}) {
l.LogFunc(l, LogAccess, "ACCESS", category, msg, args...)
}
func (l *LogScope) Info(category string, msg string, args ...interface{}) {
l.LogFunc(l, LogInfo, "INFO", category, msg, args...)
}
func (l *LogScope) Error(category string, msg string, args ...interface{}) {
l.LogFunc(l, LogError, "ERROR", category, msg, args...)
}
func (l *LogScope) Fatal(category string, msg string, args ...interface{}) {
l.LogFunc(l, LogFatal, "FATAL", category, msg, args...)
}
func (parent *LogScope) NewLevel(logFunc LogFunc) *LogScope {
return &LogScope{
Parent: parent,
MinLevel: parent.MinLevel,
Mutex: parent.Mutex,
Associated: make([]AssocPair, 0),
LogFunc: logFunc}
}
func RootLogScope(minLevel LogLevel, logFunc LogFunc) *LogScope {
return &LogScope{
Parent: nil,
MinLevel: minLevel,
Mutex: &sync.Mutex{},
Associated: make([]AssocPair, 0),
LogFunc: logFunc}
}
func Timestamp() string {
return time.Now().Format(time.RFC1123Z)
}
func LevelFromString(s string) LogLevel {
switch s {
case "debug":
return LogDebug
case "trace":
return LogTrace
case "access":
return LogAccess
case "info":
return LogInfo
case "error":
return LogError
case "fatal":
return LogFatal
case "none":
return LogNone
default:
return LogUnknown
}
}
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