Examples with StreamingGetWorkRequest org.apache.beam.runners.dataflow.worker.windmill.Windmill.StreamingGetWorkRequest used on opensource projects

Example 1 with StreamingGetWorkRequest

use of org.apache.beam.runners.dataflow.worker.windmill.Windmill.StreamingGetWorkRequest in project beam by apache.

the class GrpcWindmillServerTest method testStreamingGetWork.

@Test
public void testStreamingGetWork() throws Exception {
    // This fake server returns an infinite stream of identical WorkItems, obeying the request size
    // limits set by the client.
    serviceRegistry.addService(new CloudWindmillServiceV1Alpha1ImplBase() {

        @Override
        public StreamObserver<StreamingGetWorkRequest> getWorkStream(StreamObserver<StreamingGetWorkResponseChunk> responseObserver) {
            return new StreamObserver<StreamingGetWorkRequest>() {

                boolean sawHeader = false;

                ResponseErrorInjector injector = new ResponseErrorInjector(responseObserver);

                @Override
                public void onNext(StreamingGetWorkRequest request) {
                    maybeInjectError(responseObserver);
                    try {
                        long maxItems;
                        if (!sawHeader) {
                            errorCollector.checkThat(request.getRequest(), Matchers.equalTo(GetWorkRequest.newBuilder().setClientId(10).setJobId("job").setProjectId("project").setWorkerId("worker").setMaxItems(3).setMaxBytes(10000).build()));
                            sawHeader = true;
                            maxItems = request.getRequest().getMaxItems();
                        } else {
                            maxItems = request.getRequestExtension().getMaxItems();
                        }
                        for (int item = 0; item < maxItems; item++) {
                            long id = ThreadLocalRandom.current().nextLong();
                            ByteString serializedResponse = WorkItem.newBuilder().setKey(ByteString.copyFromUtf8("somewhat_long_key")).setWorkToken(id).setShardingKey(id).build().toByteString();
                            // Break the WorkItem into smaller chunks to test chunking code.
                            for (int i = 0; i < serializedResponse.size(); i += 10) {
                                int end = Math.min(serializedResponse.size(), i + 10);
                                StreamingGetWorkResponseChunk.Builder builder = StreamingGetWorkResponseChunk.newBuilder().setStreamId(id).setSerializedWorkItem(serializedResponse.substring(i, end)).setRemainingBytesForWorkItem(serializedResponse.size() - end);
                                if (i == 0) {
                                    builder.setComputationMetadata(ComputationWorkItemMetadata.newBuilder().setComputationId("comp").setDependentRealtimeInputWatermark(17000).setInputDataWatermark(18000));
                                }
                                try {
                                    responseObserver.onNext(builder.build());
                                } catch (IllegalStateException e) {
                                    // Client closed stream, we're done.
                                    return;
                                }
                            }
                        }
                    } catch (Exception e) {
                        errorCollector.addError(e);
                    }
                }

                @Override
                public void onError(Throwable throwable) {
                }

                @Override
                public void onCompleted() {
                    injector.cancel();
                    responseObserver.onCompleted();
                }
            };
        }
    });
    // Read the stream of WorkItems until 100 of them are received.
    CountDownLatch latch = new CountDownLatch(100);
    GetWorkStream stream = client.getWorkStream(GetWorkRequest.newBuilder().setClientId(10).setMaxItems(3).setMaxBytes(10000).build(), (String computation, @Nullable Instant inputDataWatermark, Instant synchronizedProcessingTime, Windmill.WorkItem workItem) -> {
        latch.countDown();
        assertEquals(inputDataWatermark, new Instant(18));
        assertEquals(synchronizedProcessingTime, new Instant(17));
        assertEquals(workItem.getKey(), ByteString.copyFromUtf8("somewhat_long_key"));
    });
    assertTrue(latch.await(30, TimeUnit.SECONDS));
    stream.close();
    assertTrue(stream.awaitTermination(30, TimeUnit.SECONDS));
}

Example 2 with StreamingGetWorkRequest

use of org.apache.beam.runners.dataflow.worker.windmill.Windmill.StreamingGetWorkRequest in project beam by apache.

the class GrpcWindmillServerTest method testThrottleSignal.

@Test
public void testThrottleSignal() throws Exception {
    // This server responds with work items until the throttleMessage limit is hit at which point it
    // returns RESROUCE_EXHAUSTED errors for throttleTime msecs after which it resumes sending
    // work items.
    final int throttleTime = 2000;
    final int throttleMessage = 15;
    serviceRegistry.addService(new CloudWindmillServiceV1Alpha1ImplBase() {

        long throttleStartTime = -1;

        int messageCount = 0;

        @Override
        public StreamObserver<StreamingGetWorkRequest> getWorkStream(StreamObserver<StreamingGetWorkResponseChunk> responseObserver) {
            return new StreamObserver<StreamingGetWorkRequest>() {

                boolean sawHeader = false;

                @Override
                public void onNext(StreamingGetWorkRequest request) {
                    messageCount++;
                    // error.
                    if (messageCount == throttleMessage || throttleStartTime != -1) {
                        // If throttling has not started yet then start it.
                        if (throttleStartTime == -1) {
                            throttleStartTime = Instant.now().getMillis();
                        }
                        // throttling stop throttling.
                        if (throttleStartTime != -1 && ((Instant.now().getMillis() - throttleStartTime) > throttleTime)) {
                            throttleStartTime = -1;
                        }
                        StatusRuntimeException error = new StatusRuntimeException(Status.RESOURCE_EXHAUSTED);
                        responseObserver.onError(error);
                        return;
                    }
                    // We are not throttling this message so respond as normal.
                    try {
                        long maxItems;
                        if (!sawHeader) {
                            sawHeader = true;
                            maxItems = request.getRequest().getMaxItems();
                        } else {
                            maxItems = request.getRequestExtension().getMaxItems();
                        }
                        for (int item = 0; item < maxItems; item++) {
                            long id = ThreadLocalRandom.current().nextLong();
                            ByteString serializedResponse = WorkItem.newBuilder().setKey(ByteString.copyFromUtf8("somewhat_long_key")).setWorkToken(id).setShardingKey(id).build().toByteString();
                            StreamingGetWorkResponseChunk.Builder builder = StreamingGetWorkResponseChunk.newBuilder().setStreamId(id).setSerializedWorkItem(serializedResponse).setRemainingBytesForWorkItem(0);
                            try {
                                responseObserver.onNext(builder.build());
                            } catch (IllegalStateException e) {
                                // Client closed stream, we're done.
                                return;
                            }
                        }
                    } catch (Exception e) {
                        errorCollector.addError(e);
                    }
                }

                @Override
                public void onError(Throwable throwable) {
                }

                @Override
                public void onCompleted() {
                    responseObserver.onCompleted();
                }
            };
        }
    });
    // Read the stream of WorkItems until 100 of them are received.
    CountDownLatch latch = new CountDownLatch(100);
    GetWorkStream stream = client.getWorkStream(GetWorkRequest.newBuilder().setClientId(10).setMaxItems(3).setMaxBytes(10000).build(), (String computation, @Nullable Instant inputDataWatermark, Instant synchronizedProcessingTime, Windmill.WorkItem workItem) -> {
        latch.countDown();
    });
    // Wait for 100 items or 30 seconds.
    assertTrue(latch.await(30, TimeUnit.SECONDS));
    // Confirm that we report at least as much throttle time as our server sent errors for.  We will
    // actually report more due to backoff in restarting streams.
    assertTrue(this.client.getAndResetThrottleTime() > throttleTime);
    stream.close();
    assertTrue(stream.awaitTermination(30, TimeUnit.SECONDS));
}