# exec".
# Important: "tfrun foo | bar" is "( tfrun foo ) | bar", not "tfrun (foo | bar)".
# Therefore, "tfrun" commands cannot include pipes -- which is
# probably for the better. If a pipe is necessary for something, it is probably
# complex. Write a well-documented script under utilities/ to encapsulate the
# functionality instead.
tfrun() { "$@"; }

    source2!!.close()
    assertThat(relay.isClosed).isTrue()
    assertFile(Relay.PREFIX_DIRTY, -1L, -1, null, null)
  }

  @Test
  fun racingReaders() {
    val pipe = Pipe(1024)
    val sink = pipe.sink.buffer()
    val relay = edit(file, pipe.source, metadata, 5)
    val future1 = executor.submit(sourceReader(relay.newSource()))
    val future2 = executor.submit(sourceReader(relay.newSource()))
    Thread.sleep(500)

  // zero effect on the behavior of the WebSocket API which is why tests are only written once
  // from the perspective of a single peer.
  private val random = Random(0)
  private val client2Server = Pipe(8192L)
  private val server2client = Pipe(8192L)
  private val taskFaker = TaskFaker()
  private val client = TestStreams(true, taskFaker, server2client, client2Server)
  private val server = TestStreams(false, taskFaker, client2Server, server2client)

If you want to block when reading or writing, you must enable it:

```go
	rb := ringbuffer.New(1024).SetBlocking(true)
```

Enabling blocking will cause the ring buffer to behave like a buffered [io.Pipe](https://pkg.go.dev/io#Pipe).

Regular Reads will block until data is available, but not wait for a full buffer. 
Writes will block until there is space available and writes bigger than the buffer will wait for reads to make space.

}

func retrieveListenerAddress(l *listener.Listener) string {
	sockAddr := l.Address.GetSocketAddress()
	if sockAddr != nil {
		return sockAddr.Address
	}

	pipe := l.Address.GetPipe()
	if pipe != nil {
		return pipe.Path
	}

	return ""
}

func retrieveListenerAdditionalAddresses(l *listener.Listener) []string {
	var addrs []string
	socketAddresses := l.GetAdditionalAddresses()

	// Race condition is because of io.PipeWriter implementation. i.e consider the following
	// sequent of operations:
	// 1) pipe.Write()
	// 2) pipe.Close()
	// Now pipe.Close() can return before the data is read on the other end of the pipe and written to the disk
	// Hence an immediate Read() on the file can return incorrect data.
	if b.canClose != nil {
		b.canClose.Wait()
	}

./mc mb sitea/delissue --insecure

./mc version enable sitea/delissue --insecure

echo hello | ./mc pipe sitea/delissue/hello --insecure

./mc version suspend sitea/delissue --insecure

./mc rm sitea/delissue/hello --insecure

./mc version enable sitea/delissue --insecure

echo hello | ./mc pipe sitea/delissue/hello --insecure

./mc version suspend sitea/delissue --insecure

	err = r.PipeReader.CloseWithError(err)
	r.wait()
	return err
}

// WaitPipe implements wait-group backend io.Pipe to provide
// synchronization between read() end with write() end.
func WaitPipe() (*PipeReader, *PipeWriter) {
	r, w := io.Pipe()
	var wg sync.WaitGroup
	wg.Add(1)
	return &PipeReader{
			PipeReader: r,
			wait:       wg.Wait,
		}, &PipeWriter{
			PipeWriter: w,

				}},
			},
			expect: true,
		},
		{
			desc: "listener-pipe",
			inFilter: &ListenerFilter{
				Address: "",
				Port:    0,
				Type:    "",
			},
			inListener: &listener.Listener{
				Address: &core.Address{
					Address: &core.Address_Pipe{
						Pipe: &core.Pipe{Path: "unix:///dev/shm/uds.socket"},
					},
				},
			},
			expect: true,
		},
	}

	go func() {
		for {
			rb.Write(data)
		}
	}()

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		rb.Read(buf)
	}
}

func BenchmarkIoPipeReader(b *testing.B) {
	pr, pw := io.Pipe()
	data := []byte(strings.Repeat("a", 512))
	buf := make([]byte, 512)

	go func() {
		for {
			pw.Write(data)
		}
	}()

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		pr.Read(buf)
	}