/**
* Note: this test fails if we don't have the synchronized block in {@link
* org.apache.flink.streaming.runtime.tasks.SourceStreamTask.SourceOutput}
*/
@Test
public void testOneInputOperatorWithoutChaining() throws Exception {
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.setParallelism(1);
DataStream<String> source = env.addSource(new InfiniteTestSource());
source.transform(
"Custom Operator",
BasicTypeInfo.STRING_TYPE_INFO,
new TimerOperator(StreamOperator.ChainingStrategy.NEVER));
boolean testSuccess = false;
try {
env.execute("Timer test");
} catch (JobExecutionException e) {
if (e.getCause() instanceof TimerException) {
TimerException te = (TimerException) e.getCause();
if (te.getCause() instanceof RuntimeException) {
RuntimeException re = (RuntimeException) te.getCause();
if (re.getMessage().equals("TEST SUCCESS")) {
testSuccess = true;
} else {
throw e;
}
} else {
throw e;
}
} else {
throw e;
}
}
Assert.assertTrue(testSuccess);
}
/**
* This method wrapps the throwing of the dns exception.
*
* @param message The message to put in the exception
* @param ex The exception stack.
* @exception DNSException
*/
private void throwTimerException(String message, Throwable ex) throws TimerException {
TimerException exception = new TimerException();
exception.message = message;
ByteArrayOutputStream output = new ByteArrayOutputStream();
PrintStream outStream = new PrintStream(output);
ex.printStackTrace(outStream);
outStream.flush();
exception.cause = output.toString();
throw exception;
}