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entry.go
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entry.go
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package log
import (
"fmt"
"runtime"
"strings"
"sync"
"time"
)
const (
keyVal = " %s=%v"
cutset = "\r\n\t "
)
// Entry represents a single log entry.
type Entry struct {
wg *sync.WaitGroup
calldepth int
ApplicationID string `json:"appId"`
Level Level `json:"level"`
Timestamp time.Time `json:"timestamp"`
Message string `json:"message"`
Fields []Field `json:"fields"`
File string `json:"file"`
Line int `json:"line"`
}
func newEntry(level Level, message string, fields []Field, calldepth int) *Entry {
entry := Logger.entryPool.Get().(*Entry)
entry.Line = 0
entry.File = entry.File[0:0]
entry.calldepth = calldepth
entry.Level = level
entry.Message = strings.TrimRight(message, cutset) // need to trim for adding fields later in handlers + why send uneeded whitespace
entry.Fields = fields
entry.Timestamp = time.Now().UTC()
return entry
}
var _ LeveledLogger = new(Entry)
// Debug level message.
func (e *Entry) Debug(v ...interface{}) {
e.Level = DebugLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
}
// Trace starts a trace & returns Traceable object to End + log
func (e *Entry) Trace(v ...interface{}) Traceable {
e.Level = TraceLevel
e.Message = fmt.Sprint(v...)
t := Logger.tracePool.Get().(*TraceEntry)
t.entry = e
t.start = time.Now().UTC()
return t
}
// Info level message.
func (e *Entry) Info(v ...interface{}) {
e.Level = InfoLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
}
// Notice level formatted message.
func (e *Entry) Notice(v ...interface{}) {
e.Level = NoticeLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
}
// Warn level message.
func (e *Entry) Warn(v ...interface{}) {
e.Level = WarnLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
}
// Error level message.
func (e *Entry) Error(v ...interface{}) {
e.Level = ErrorLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
}
// Panic logs an Error level formatted message and then panics
func (e *Entry) Panic(v ...interface{}) {
s := fmt.Sprint(v...)
e.Level = PanicLevel
e.Message = s
Logger.HandleEntry(e)
for _, f := range e.Fields {
s += fmt.Sprintf(keyVal, f.Key, f.Value)
}
panic(s)
}
// Alert level message.
func (e *Entry) Alert(v ...interface{}) {
e.Level = AlertLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
}
// Fatal level message, followed by an exit.
func (e *Entry) Fatal(v ...interface{}) {
e.Level = FatalLevel
e.Message = fmt.Sprint(v...)
Logger.HandleEntry(e)
exitFunc(1)
}
// Debugf level formatted message.
func (e *Entry) Debugf(msg string, v ...interface{}) {
e.Level = DebugLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
}
// Tracef starts a trace & returns Traceable object to End + log
func (e *Entry) Tracef(msg string, v ...interface{}) Traceable {
e.Level = TraceLevel
e.Message = fmt.Sprintf(msg, v...)
t := Logger.tracePool.Get().(*TraceEntry)
t.entry = e
t.start = time.Now().UTC()
return t
}
// Infof level formatted message.
func (e *Entry) Infof(msg string, v ...interface{}) {
e.Level = InfoLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
}
// Noticef level formatted message.
func (e *Entry) Noticef(msg string, v ...interface{}) {
e.Level = NoticeLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
}
// Warnf level formatted message.
func (e *Entry) Warnf(msg string, v ...interface{}) {
e.Level = WarnLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
}
// Errorf level formatted message.
func (e *Entry) Errorf(msg string, v ...interface{}) {
e.Level = ErrorLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
}
// Panicf logs an Error level formatted message and then panics
func (e *Entry) Panicf(msg string, v ...interface{}) {
s := fmt.Sprintf(msg, v...)
e.Level = PanicLevel
e.Message = s
Logger.HandleEntry(e)
for _, f := range e.Fields {
s += fmt.Sprintf(keyVal, f.Key, f.Value)
}
panic(s)
}
// Alertf level formatted message.
func (e *Entry) Alertf(msg string, v ...interface{}) {
e.Level = AlertLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
}
// Fatalf level formatted message, followed by an exit.
func (e *Entry) Fatalf(msg string, v ...interface{}) {
e.Level = FatalLevel
e.Message = fmt.Sprintf(msg, v...)
Logger.HandleEntry(e)
exitFunc(1)
}
// WithFields adds the provided fieldsto the current entry
func (e *Entry) WithFields(fields ...Field) LeveledLogger {
e.Fields = append(e.Fields, fields...)
return e
}
// StackTrace adds a field with stack trace to the current log Entry.
func (e *Entry) StackTrace() LeveledLogger {
trace := make([]byte, 1<<16)
n := runtime.Stack(trace, true)
if n > stackTraceLimit {
n = stackTraceLimit
}
e.Fields = append(e.Fields, F("stack trace", string(trace[:n])+"\n"))
return e
}
// Consumed lets the Entry and subsequently the Logger
// instance know that it has been used by a handler
func (e *Entry) Consumed() {
if e.wg != nil {
e.wg.Done()
}
}