| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.stream.pubsub; |
| |
| import com.google.api.core.ApiFutures; |
| import com.google.api.gax.core.CredentialsProvider; |
| import com.google.api.gax.core.NoCredentialsProvider; |
| import com.google.api.gax.grpc.GrpcTransportChannel; |
| import com.google.api.gax.rpc.FixedTransportChannelProvider; |
| import com.google.cloud.pubsub.v1.Publisher; |
| import com.google.cloud.pubsub.v1.stub.SubscriberStubSettings; |
| import com.google.protobuf.Empty; |
| import com.google.pubsub.v1.AcknowledgeRequest; |
| import com.google.pubsub.v1.PubsubMessage; |
| import com.google.pubsub.v1.PullRequest; |
| import com.google.pubsub.v1.PullResponse; |
| import com.google.pubsub.v1.ReceivedMessage; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.UUID; |
| import java.util.concurrent.BlockingDeque; |
| import java.util.concurrent.LinkedBlockingDeque; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.jetbrains.annotations.NotNull; |
| import org.mockito.Mockito; |
| |
| import io.grpc.CallOptions; |
| import io.grpc.ClientCall; |
| import io.grpc.ManagedChannel; |
| import io.grpc.Metadata; |
| import io.grpc.MethodDescriptor; |
| import io.grpc.Status; |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Mockito.doAnswer; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| /** |
| * Mock Pub/Sub Server |
| */ |
| class MockPubSubServer { |
| /** Test topic. */ |
| public static final String TOPIC_NAME = "pagevisits"; |
| |
| /** */ |
| public static final String PROJECT = "test-project"; |
| |
| /** */ |
| private static final String LOCALHOST = "localhost"; |
| |
| /** */ |
| private static final int PORT = 8080; |
| |
| /** */ |
| public static final int MESSAGES_PER_REQUEST = 10; |
| |
| /** Time to wait for the message in milliseconds. */ |
| private static final long MSG_WAIT_TIMEOUT = 1_000L; |
| |
| /** */ |
| private final Map<String, Publisher> publishers = new HashMap<>(); |
| |
| /** */ |
| private final BlockingDeque<PubsubMessage> blockingQueue = new LinkedBlockingDeque<>(); |
| |
| public SubscriberStubSettings createSubscriberStub() throws IOException { |
| CredentialsProvider credentialsProvider = NoCredentialsProvider.create(); |
| |
| ManagedChannel managedChannel = managedChannel(); |
| |
| FixedTransportChannelProvider transportChannel = FixedTransportChannelProvider.create(GrpcTransportChannel.create(managedChannel)); |
| SubscriberStubSettings subscriberStubSettings = SubscriberStubSettings.newBuilder() |
| .setTransportChannelProvider(transportChannel) |
| .setCredentialsProvider(credentialsProvider) |
| .build(); |
| return subscriberStubSettings; |
| } |
| |
| @NotNull |
| private ManagedChannel managedChannel() { |
| ManagedChannel managedChannel = Mockito.mock(ManagedChannel.class); |
| when(managedChannel.newCall(any(MethodDescriptor.class),any(CallOptions.class))).thenAnswer((la) -> { |
| MethodDescriptor methodDescriptor = (MethodDescriptor) la.getArguments()[0]; |
| if(methodDescriptor.getFullMethodName().equals("google.pubsub.v1.Subscriber/Acknowledge")) { |
| return acknowledgeCall(); |
| } |
| |
| return clientCall(); |
| }); |
| return managedChannel; |
| } |
| |
| private ClientCall<AcknowledgeRequest, Empty> acknowledgeCall() { |
| ClientCall<AcknowledgeRequest, Empty> clientCall = Mockito.mock(ClientCall.class); |
| doAnswer(iom -> { |
| Object[] arguments = iom.getArguments(); |
| ClientCall.Listener<Empty> listener = (ClientCall.Listener<Empty>) arguments[0]; |
| listener.onMessage(Empty.getDefaultInstance()); |
| Metadata metadata = (Metadata) arguments[1]; |
| listener.onClose(Status.OK, metadata); |
| return null; |
| } |
| ).when(clientCall).start(any(ClientCall.Listener.class),any(Metadata.class)); |
| return clientCall; |
| } |
| |
| private ClientCall<PullRequest, PullResponse> clientCall() { |
| ClientCall<PullRequest, PullResponse> clientCall = Mockito.mock(ClientCall.class); |
| |
| doAnswer( |
| iom ->{ |
| Object[] arguments = iom.getArguments(); |
| ClientCall.Listener<PullResponse> listener = (ClientCall.Listener<PullResponse>) arguments[0]; |
| Metadata metadata = (Metadata) arguments[1]; |
| pullMessages(listener, metadata); |
| return null; |
| } |
| ).when(clientCall).start(any(ClientCall.Listener.class),any(Metadata.class)); |
| return clientCall; |
| } |
| |
| private void pullMessages(ClientCall.Listener<PullResponse> listener, Metadata metadata) { |
| PullResponse.Builder pullResponse = PullResponse.newBuilder(); |
| |
| try { |
| for (int i = 0; i < MESSAGES_PER_REQUEST; i++) { |
| PubsubMessage msg = blockingQueue.poll(MSG_WAIT_TIMEOUT, TimeUnit.MILLISECONDS); |
| |
| if (msg == null) |
| break; |
| |
| pullResponse.addReceivedMessages(ReceivedMessage.newBuilder().mergeMessage(msg).build()); |
| } |
| } |
| catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } |
| |
| listener.onMessage(pullResponse.build()); |
| listener.onClose(Status.OK, metadata); |
| } |
| |
| public Publisher getPublisher(String topicName) throws IOException { |
| publishers.putIfAbsent(topicName, createPublisher(topicName)); |
| return publishers.get(topicName); |
| } |
| |
| private Publisher createPublisher(String topic) { |
| Publisher publisher = mock(Publisher.class); |
| |
| when(publisher.publish(any(PubsubMessage.class))).thenAnswer( |
| (iom) -> { |
| PubsubMessage pubsubMessage = (PubsubMessage) iom.getArguments()[0]; |
| blockingQueue.add(pubsubMessage); |
| return ApiFutures.immediateFuture(UUID.randomUUID().toString()); |
| } |
| ); |
| return publisher; |
| } |
| |
| /** |
| * Obtains Pub/Sub address. |
| * |
| * @return Pub/Sub address. |
| */ |
| private String getPubSubAddress() { |
| return LOCALHOST+ ":" + PORT; |
| } |
| |
| } |