/usr/share/gocode/src/github.com/hashicorp/serf/command/agent/gated_writer.go is in golang-github-hashicorp-serf-dev 0.7.0~ds1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | package agent
import (
"io"
"sync"
)
// GatedWriter is an io.Writer implementation that buffers all of its
// data into an internal buffer until it is told to let data through.
type GatedWriter struct {
Writer io.Writer
buf [][]byte
flush bool
lock sync.RWMutex
}
// Flush tells the GatedWriter to flush any buffered data and to stop
// buffering.
func (w *GatedWriter) Flush() {
w.lock.Lock()
w.flush = true
w.lock.Unlock()
for _, p := range w.buf {
w.Write(p)
}
w.buf = nil
}
func (w *GatedWriter) Write(p []byte) (n int, err error) {
w.lock.RLock()
defer w.lock.RUnlock()
if w.flush {
return w.Writer.Write(p)
}
p2 := make([]byte, len(p))
copy(p2, p)
w.buf = append(w.buf, p2)
return len(p), nil
}
|