zlog/event.go

214 lines
3.5 KiB
Go
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2017-05-12 05:24:39 +00:00
package zerolog
import (
"bytes"
"fmt"
"sync"
"time"
)
var pool = &sync.Pool{
New: func() interface{} {
return bytes.NewBuffer(make([]byte, 500))
},
}
type Event struct {
buf *bytes.Buffer
w LevelWriter
level Level
enabled bool
done func(msg string)
}
func newEvent(w LevelWriter, level Level, enabled bool) Event {
if !enabled {
return Event{}
}
buf := pool.Get().(*bytes.Buffer)
buf.Reset()
buf.WriteByte('{')
return Event{
buf: buf,
w: w,
level: level,
enabled: true,
}
}
func (e Event) write() (n int, err error) {
if !e.enabled {
return 0, nil
}
e.buf.WriteByte('}')
e.buf.WriteByte('\n')
n, err = e.w.WriteLevel(e.level, e.buf.Bytes())
pool.Put(e.buf)
return
}
func (e Event) append(f field) Event {
if !e.enabled {
return e
}
if e.buf.Len() > 1 {
e.buf.WriteByte(',')
}
f.writeJSON(e.buf)
return e
}
// Enabled return false if the event is going to be filtered out by
// log level or sampling.
func (e Event) Enabled() bool {
return e.enabled
}
// Msg sends the event with msg added as the message field if not empty.
func (e Event) Msg(msg string) (n int, err error) {
if !e.enabled {
return 0, nil
}
if msg != "" {
e.append(fStr(MessageFieldName, msg))
}
if e.done != nil {
defer e.done(msg)
}
return e.write()
}
// Msgf sends the event with formated msg added as the message field if not empty.
func (e Event) Msgf(format string, v ...interface{}) (n int, err error) {
if !e.enabled {
return 0, nil
}
msg := fmt.Sprintf(format, v...)
if msg != "" {
e.append(fStr(MessageFieldName, msg))
}
if e.done != nil {
defer e.done(msg)
}
return e.write()
}
func (e Event) Str(key, val string) Event {
if !e.enabled {
return e
}
return e.append(fStr(key, val))
}
func (e Event) Err(err error) Event {
if !e.enabled {
return e
}
return e.append(fErr(err))
}
func (e Event) Bool(key string, b bool) Event {
if !e.enabled {
return e
}
return e.append(fBool(key, b))
}
func (e Event) Int(key string, i int) Event {
if !e.enabled {
return e
}
return e.append(fInt(key, i))
}
func (e Event) Int8(key string, i int8) Event {
if !e.enabled {
return e
}
return e.append(fInt8(key, i))
}
func (e Event) Int16(key string, i int16) Event {
if !e.enabled {
return e
}
return e.append(fInt16(key, i))
}
func (e Event) Int32(key string, i int32) Event {
if !e.enabled {
return e
}
return e.append(fInt32(key, i))
}
func (e Event) Int64(key string, i int64) Event {
if !e.enabled {
return e
}
return e.append(fInt64(key, i))
}
func (e Event) Uint(key string, i uint) Event {
if !e.enabled {
return e
}
return e.append(fUint(key, i))
}
func (e Event) Uint8(key string, i uint8) Event {
if !e.enabled {
return e
}
return e.append(fUint8(key, i))
}
func (e Event) Uint16(key string, i uint16) Event {
if !e.enabled {
return e
}
return e.append(fUint16(key, i))
}
func (e Event) Uint32(key string, i uint32) Event {
if !e.enabled {
return e
}
return e.append(fUint32(key, i))
}
func (e Event) Uint64(key string, i uint64) Event {
if !e.enabled {
return e
}
return e.append(fUint64(key, i))
}
func (e Event) Float32(key string, f float32) Event {
if !e.enabled {
return e
}
return e.append(fFloat32(key, f))
}
func (e Event) Float64(key string, f float64) Event {
if !e.enabled {
return e
}
return e.append(fFloat64(key, f))
}
func (e Event) Timestamp() Event {
if !e.enabled {
return e
}
return e.append(fTimestamp())
}
func (e Event) Time(key string, t time.Time) Event {
if !e.enabled {
return e
}
return e.append(fTime(key, t))
}