| /** |
| * 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.falcon; |
| |
| import org.apache.falcon.entity.v0.Entity; |
| import org.apache.falcon.entity.v0.EntityType; |
| import org.apache.falcon.entity.v0.feed.Schema; |
| import org.apache.falcon.entity.v0.process.Process; |
| import org.apache.falcon.extensions.ExtensionBuilder; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.xml.bind.JAXBException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Properties; |
| |
| /** |
| * Extension Example for testing extension loading and preparing entities. |
| */ |
| public class ExtensionExample implements ExtensionBuilder{ |
| |
| public static final Logger LOG = LoggerFactory.getLogger(ExtensionExample.class); |
| public static final String PROCESS_XML = "/extension-example.xml"; |
| |
| @Override |
| public List<Entity> getEntities(String extensionName, InputStream extensionConfigStream) throws FalconException { |
| Process process; |
| try { |
| process = (Process) EntityType.PROCESS.getUnmarshaller().unmarshal( |
| getClass().getResourceAsStream(PROCESS_XML)); |
| } catch (JAXBException e) { |
| throw new FalconException("Failed in un-marshalling the entity"); |
| } |
| if (extensionConfigStream != null) { |
| Properties properties = new Properties(); |
| try { |
| properties.load(extensionConfigStream); |
| } catch (IOException e) { |
| LOG.warn("Not able to load the configStream"); |
| } |
| process.setPipelines(properties.getProperty("pipelines.name")); |
| } |
| List<Entity> entities = new ArrayList<>(); |
| entities.add(process); |
| return entities; |
| } |
| |
| @Override |
| public void validateExtensionConfig(String extensionName, InputStream extensionConfigStream) |
| throws FalconException { |
| } |
| |
| @Override |
| public List<Pair<String, Schema>> getOutputSchemas(String extensionName) throws FalconException { |
| return null; |
| } |
| |
| public String toString(String testString) { |
| return testString; |
| } |
| } |