| /* |
| * 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.samoa.apex.topology.impl; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.samoa.core.EntranceProcessor; |
| import org.apache.samoa.core.Processor; |
| import org.apache.samoa.topology.ComponentFactory; |
| import org.apache.samoa.topology.EntranceProcessingItem; |
| import org.apache.samoa.topology.IProcessingItem; |
| import org.apache.samoa.topology.ProcessingItem; |
| import org.apache.samoa.topology.Stream; |
| import org.apache.samoa.topology.Topology; |
| |
| /** |
| * Component factory implementation for samoa-apex |
| */ |
| public final class ApexComponentFactory implements ComponentFactory { |
| |
| private final Map<String, Integer> processorList; |
| |
| public ApexComponentFactory() { |
| processorList = new HashMap<>(); |
| } |
| |
| @Override |
| public ProcessingItem createPi(Processor processor) { |
| return new ApexProcessingItem(processor, this.getComponentName(processor.getClass()), 1); |
| } |
| |
| @Override |
| public ProcessingItem createPi(Processor processor, int parallelism) { |
| return new ApexProcessingItem(processor, this.getComponentName(processor.getClass()), parallelism); |
| } |
| |
| @Override |
| public EntranceProcessingItem createEntrancePi(EntranceProcessor processor) { |
| return new ApexEntranceProcessingItem(processor, this.getComponentName(processor.getClass())); |
| } |
| |
| @Override |
| public Stream createStream(IProcessingItem sourcePi) { |
| ApexTopologyNode apexCompatiblePi = (ApexTopologyNode) sourcePi; |
| ApexStream stream = apexCompatiblePi.createStream(); |
| return stream; |
| } |
| |
| @Override |
| public Topology createTopology(String topoName) { |
| return new ApexTopology(topoName); |
| } |
| |
| private String getComponentName(Class<? extends Processor> clazz) { |
| StringBuilder componentName = new StringBuilder(clazz.getCanonicalName()); |
| String key = componentName.toString(); |
| Integer index; |
| |
| if (!processorList.containsKey(key)) { |
| index = 1; |
| } else { |
| index = processorList.get(key) + 1; |
| } |
| |
| processorList.put(key, index); |
| |
| componentName.append('_'); |
| componentName.append(index); |
| |
| return componentName.toString(); |
| } |
| } |