| /* |
| * 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.samza.coordinator.stream; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.CountDownLatch; |
| import org.apache.samza.SamzaException; |
| import org.apache.samza.config.Config; |
| import org.apache.samza.coordinator.stream.messages.SetChangelogMapping; |
| import org.apache.samza.coordinator.stream.messages.SetConfig; |
| import org.apache.samza.serializers.model.SamzaObjectMapper; |
| import org.apache.samza.system.IncomingMessageEnvelope; |
| import org.apache.samza.system.SystemStreamPartition; |
| import org.apache.samza.util.BlockingEnvelopeMap; |
| import org.codehaus.jackson.map.ObjectMapper; |
| |
| /** |
| * A mock SystemConsumer that pretends to be a coordinator stream. The mock will |
| * take all configs given to it, and put them into the coordinator stream's |
| * SystemStreamPartition. This is useful in cases where config needs to be |
| * quickly passed from a unit test into the JobCoordinator. |
| */ |
| public class MockCoordinatorStreamWrappedConsumer extends BlockingEnvelopeMap { |
| private final static ObjectMapper MAPPER = SamzaObjectMapper.getObjectMapper(); |
| public final static String CHANGELOGPREFIX = "ch:"; |
| public final CountDownLatch blockConsumerPoll = new CountDownLatch(1); |
| public boolean blockpollFlag = false; |
| |
| private final SystemStreamPartition systemStreamPartition; |
| private final Config config; |
| |
| public MockCoordinatorStreamWrappedConsumer(SystemStreamPartition systemStreamPartition, Config config) { |
| super(); |
| this.config = config; |
| this.systemStreamPartition = systemStreamPartition; |
| } |
| |
| @Override |
| public void register(SystemStreamPartition systemStreamPartition, String offset) { |
| super.register(systemStreamPartition, offset); |
| setIsAtHead(systemStreamPartition, true); |
| } |
| |
| public void start() { |
| convertConfigToCoordinatorMessage(config); |
| } |
| |
| public void addMessageEnvelope(IncomingMessageEnvelope envelope) throws IOException, InterruptedException { |
| put(systemStreamPartition, envelope); |
| setIsAtHead(systemStreamPartition, true); |
| } |
| |
| private void convertConfigToCoordinatorMessage(Config config) { |
| try { |
| for (Map.Entry<String, String> configPair : config.entrySet()) { |
| byte[] keyBytes; |
| byte[] messgeBytes; |
| if (configPair.getKey().startsWith(CHANGELOGPREFIX)) { |
| String[] changelogInfo = configPair.getKey().split(":"); |
| String changeLogPartition = configPair.getValue(); |
| SetChangelogMapping changelogMapping = new SetChangelogMapping(changelogInfo[1], changelogInfo[2], Integer.parseInt(changeLogPartition)); |
| keyBytes = MAPPER.writeValueAsString(changelogMapping.getKeyArray()).getBytes("UTF-8"); |
| messgeBytes = MAPPER.writeValueAsString(changelogMapping.getMessageMap()).getBytes("UTF-8"); |
| } else { |
| SetConfig setConfig = new SetConfig("source", configPair.getKey(), configPair.getValue()); |
| keyBytes = MAPPER.writeValueAsString(setConfig.getKeyArray()).getBytes("UTF-8"); |
| messgeBytes = MAPPER.writeValueAsString(setConfig.getMessageMap()).getBytes("UTF-8"); |
| } |
| // The ssp here is the coordinator ssp (which is always fixed) and not the task ssp. |
| put(systemStreamPartition, new IncomingMessageEnvelope(systemStreamPartition, "", keyBytes, messgeBytes)); |
| } |
| setIsAtHead(systemStreamPartition, true); |
| } catch (Exception e) { |
| throw new SamzaException(e); |
| } |
| } |
| |
| @Override |
| public Map<SystemStreamPartition, List<IncomingMessageEnvelope>> poll( |
| Set<SystemStreamPartition> systemStreamPartitions, long timeout) |
| throws InterruptedException { |
| |
| if (blockpollFlag) { |
| blockConsumerPoll.await(); |
| } |
| |
| return super.poll(systemStreamPartitions, timeout); |
| } |
| |
| public void stop() {} |
| } |