How to use

isAlive

method

in

org.apache.brooklyn.util.stream.StreamGobbler

@Test
public void testGobbleStream() throws Exception {
  byte[] bytes = new byte[] {'a','b','c'};
  InputStream stream = new ByteArrayInputStream(bytes);
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  StreamGobbler gobbler = new StreamGobbler(stream, out, null);
  gobbler.start();
  try {
    gobbler.join(10*1000);
    assertFalse(gobbler.isAlive());
    assertEquals(new String(out.toByteArray()), "abc" + NL);
  } finally {
    gobbler.close();
    gobbler.interrupt();
  }
}

@Test
public void testGobbleMultiLineBlockingStream() throws Exception {
  PipedOutputStream pipedOutputStream = new PipedOutputStream();
  PipedInputStream stream = new PipedInputStream(pipedOutputStream);
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  StreamGobbler gobbler = new StreamGobbler(stream, out, null);
  gobbler.start();
  try {
    pipedOutputStream.write("line1\n".getBytes());
    pipedOutputStream.flush();
    assertEqualsEventually(out, "line1" + NL);
    pipedOutputStream.write("line2\n".getBytes());
    pipedOutputStream.flush();
    assertEqualsEventually(out, "line1" + NL + "line2" + NL);
    pipedOutputStream.write("line".getBytes());
    pipedOutputStream.write("3\n".getBytes());
    pipedOutputStream.flush();
    assertEqualsEventually(out, "line1" + NL + "line2" + NL + "line3" + NL);
    pipedOutputStream.close();
    
    gobbler.join(10*1000);
    assertFalse(gobbler.isAlive());
    assertEquals(new String(out.toByteArray()), "line1" + NL + "line2" + NL + "line3" + NL);
  } finally {
    gobbler.close();
    gobbler.interrupt();
  }
}