@Test
public void testHappyPath() throws Exception {
Page expectedPage = new Page(100);
DataSize expectedMaxSize = new DataSize(11, Unit.MEGABYTE);
MockExchangeRequestProcessor processor = new MockExchangeRequestProcessor(expectedMaxSize);
CyclicBarrier requestComplete = new CyclicBarrier(2);
TestingClientCallback callback = new TestingClientCallback(requestComplete);
URI location = URI.create("http://localhost:8080");
HttpPageBufferClient client =
new HttpPageBufferClient(
new TestingHttpClient(processor, executor),
expectedMaxSize,
new Duration(1, TimeUnit.MINUTES),
location,
callback,
blockEncodingManager,
executor,
Stopwatch.createUnstarted());
assertStatus(client, location, "queued", 0, 0, 0, 0, "not scheduled");
// fetch a page and verify
processor.addPage(location, expectedPage);
callback.resetStats();
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getPages().size(), 1);
assertPageEquals(expectedPage, callback.getPages().get(0));
assertEquals(callback.getCompletedRequests(), 1);
assertEquals(callback.getFinishedBuffers(), 0);
assertStatus(client, location, "queued", 1, 1, 1, 0, "not scheduled");
// fetch no data and verify
callback.resetStats();
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getPages().size(), 0);
assertEquals(callback.getCompletedRequests(), 1);
assertEquals(callback.getFinishedBuffers(), 0);
assertStatus(client, location, "queued", 1, 2, 2, 0, "not scheduled");
// fetch two more pages and verify
processor.addPage(location, expectedPage);
processor.addPage(location, expectedPage);
callback.resetStats();
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getPages().size(), 2);
assertPageEquals(expectedPage, callback.getPages().get(0));
assertPageEquals(expectedPage, callback.getPages().get(1));
assertEquals(callback.getCompletedRequests(), 1);
assertEquals(callback.getFinishedBuffers(), 0);
assertEquals(callback.getFailedBuffers(), 0);
callback.resetStats();
assertStatus(client, location, "queued", 3, 3, 3, 0, "not scheduled");
// finish and verify
callback.resetStats();
processor.setComplete(location);
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
// get the buffer complete signal
assertEquals(callback.getPages().size(), 0);
assertEquals(callback.getCompletedRequests(), 1);
// schedule the delete call to the buffer
callback.resetStats();
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getFinishedBuffers(), 1);
assertEquals(callback.getPages().size(), 0);
assertEquals(callback.getCompletedRequests(), 0);
assertEquals(callback.getFailedBuffers(), 0);
assertStatus(client, location, "closed", 3, 5, 5, 0, "not scheduled");
}
@Test
public void testInvalidResponses() throws Exception {
CyclicBarrier beforeRequest = new CyclicBarrier(1);
CyclicBarrier afterRequest = new CyclicBarrier(1);
StaticRequestProcessor processor = new StaticRequestProcessor(beforeRequest, afterRequest);
CyclicBarrier requestComplete = new CyclicBarrier(2);
TestingClientCallback callback = new TestingClientCallback(requestComplete);
URI location = URI.create("http://localhost:8080");
HttpPageBufferClient client =
new HttpPageBufferClient(
new TestingHttpClient(processor, executor),
new DataSize(10, Unit.MEGABYTE),
new Duration(1, TimeUnit.MINUTES),
location,
callback,
blockEncodingManager,
executor,
Stopwatch.createUnstarted());
assertStatus(client, location, "queued", 0, 0, 0, 0, "not scheduled");
// send not found response and verify response was ignored
processor.setResponse(
new TestingResponse(
HttpStatus.NOT_FOUND,
ImmutableListMultimap.of(CONTENT_TYPE, PRESTO_PAGES),
new byte[0]));
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getPages().size(), 0);
assertEquals(callback.getCompletedRequests(), 1);
assertEquals(callback.getFinishedBuffers(), 0);
assertEquals(callback.getFailedBuffers(), 1);
assertInstanceOf(callback.getFailure(), PageTransportErrorException.class);
assertContains(
callback.getFailure().getMessage(),
"Expected response code to be 200, but was 404 Not Found");
assertStatus(client, location, "queued", 0, 1, 1, 1, "not scheduled");
// send invalid content type response and verify response was ignored
callback.resetStats();
processor.setResponse(
new TestingResponse(
HttpStatus.OK, ImmutableListMultimap.of(CONTENT_TYPE, "INVALID_TYPE"), new byte[0]));
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getPages().size(), 0);
assertEquals(callback.getCompletedRequests(), 1);
assertEquals(callback.getFinishedBuffers(), 0);
assertEquals(callback.getFailedBuffers(), 1);
assertInstanceOf(callback.getFailure(), PageTransportErrorException.class);
assertContains(
callback.getFailure().getMessage(),
"Expected application/x-presto-pages response from server but got INVALID_TYPE");
assertStatus(client, location, "queued", 0, 2, 2, 2, "not scheduled");
// send unexpected content type response and verify response was ignored
callback.resetStats();
processor.setResponse(
new TestingResponse(
HttpStatus.OK, ImmutableListMultimap.of(CONTENT_TYPE, "text/plain"), new byte[0]));
client.scheduleRequest();
requestComplete.await(10, TimeUnit.SECONDS);
assertEquals(callback.getPages().size(), 0);
assertEquals(callback.getCompletedRequests(), 1);
assertEquals(callback.getFinishedBuffers(), 0);
assertEquals(callback.getFailedBuffers(), 1);
assertInstanceOf(callback.getFailure(), PageTransportErrorException.class);
assertContains(
callback.getFailure().getMessage(),
"Expected application/x-presto-pages response from server but got text/plain");
assertStatus(client, location, "queued", 0, 3, 3, 3, "not scheduled");
// close client and verify
client.close();
requestComplete.await(10, TimeUnit.SECONDS);
assertStatus(client, location, "closed", 0, 3, 4, 3, "not scheduled");
}