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writer_sink.go
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/
writer_sink.go
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package lager
import (
"io"
"sync"
)
const logBufferSize = 1024
// A Sink represents a write destination for a Logger. It provides
// a thread-safe interface for writing logs
type Sink interface {
//Log to the sink. Best effort -- no need to worry about errors.
Log(level LogLevel, payload []byte)
}
type writerSink struct {
writer io.Writer
minLogLevel LogLevel
writeL *sync.Mutex
}
func NewWriterSink(writer io.Writer, minLogLevel LogLevel) Sink {
return &writerSink{
writer: writer,
minLogLevel: minLogLevel,
writeL: new(sync.Mutex),
}
}
func (sink *writerSink) Log(level LogLevel, log []byte) {
if level < sink.minLogLevel {
return
}
sink.writeL.Lock()
sink.writer.Write(log)
sink.writer.Write([]byte("\n"))
sink.writeL.Unlock()
}