| /* |
| * 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.test.util; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.stream.Collectors; |
| import org.apache.samza.config.Config; |
| import org.apache.samza.system.IncomingMessageEnvelope; |
| import org.apache.samza.system.SystemConsumer; |
| import org.apache.samza.system.SystemStreamPartition; |
| |
| /** |
| * A simple implementation of array system consumer |
| */ |
| public class ArraySystemConsumer implements SystemConsumer { |
| boolean done = false; |
| private final Config config; |
| |
| public ArraySystemConsumer(Config config) { |
| this.config = config; |
| } |
| |
| @Override |
| public void start() { |
| } |
| |
| @Override |
| public void stop() { |
| } |
| |
| @Override |
| public void register(SystemStreamPartition systemStreamPartition, String s) { |
| } |
| |
| @Override |
| public Map<SystemStreamPartition, List<IncomingMessageEnvelope>> poll(Set<SystemStreamPartition> set, long l) throws InterruptedException { |
| if (!done) { |
| Map<SystemStreamPartition, List<IncomingMessageEnvelope>> envelopeMap = new HashMap<>(); |
| final AtomicInteger offset = new AtomicInteger(0); |
| set.forEach(ssp -> { |
| List<IncomingMessageEnvelope> envelopes = Arrays.stream(getArrayObjects(ssp.getSystemStream().getStream(), config)) |
| .map(object -> new IncomingMessageEnvelope(ssp, String.valueOf(offset.incrementAndGet()), null, object)).collect(Collectors.toList()); |
| envelopes.add(IncomingMessageEnvelope.buildEndOfStreamEnvelope(ssp)); |
| envelopeMap.put(ssp, envelopes); |
| }); |
| done = true; |
| return envelopeMap; |
| } else { |
| return Collections.emptyMap(); |
| } |
| |
| } |
| |
| private static Object[] getArrayObjects(String stream, Config config) { |
| try { |
| return Base64Serializer.deserialize(config.get("streams." + stream + ".source"), Object[].class); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |