| /* |
| * 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.spi.deployment.uri.tasks; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| import org.apache.ignite.IgniteException; |
| import org.apache.ignite.compute.ComputeJob; |
| import org.apache.ignite.compute.ComputeJobAdapter; |
| import org.apache.ignite.compute.ComputeJobResult; |
| import org.apache.ignite.compute.ComputeTaskName; |
| import org.apache.ignite.compute.ComputeTaskSplitAdapter; |
| import org.jetbrains.annotations.Nullable; |
| import org.springframework.beans.factory.support.AbstractBeanFactory; |
| import org.springframework.beans.factory.xml.XmlBeanFactory; |
| import org.springframework.core.io.ClassPathResource; |
| |
| /** |
| * This class defines grid task for this example. Grid task is responsible for splitting the task into jobs. This |
| * particular implementation splits given string into individual words and creates grid jobs for each word. Task class |
| * in that example should be placed in GAR file. |
| */ |
| @ComputeTaskName("GarHelloWorldTask") |
| public class GarHelloWorldTask extends ComputeTaskSplitAdapter<String, String> { |
| /** {@inheritDoc} */ |
| @Override public Collection<? extends ComputeJob> split(int gridSize, String arg) throws IgniteException { |
| // Create Spring context. |
| AbstractBeanFactory fac = new XmlBeanFactory( |
| new ClassPathResource("org/apache/ignite/spi/deployment/uri/tasks/gar-spring-bean.xml", getClass().getClassLoader())); |
| |
| fac.setBeanClassLoader(getClass().getClassLoader()); |
| |
| // Load imported bean from GAR/lib folder. |
| GarHelloWorldBean bean = (GarHelloWorldBean)fac.getBean("example.bean"); |
| |
| String msg = bean.getMessage(arg); |
| |
| assert msg != null; |
| |
| // Split the passed in phrase into multiple words separated by spaces. |
| List<String> words = Arrays.asList(msg.split(" ")); |
| |
| Collection<ComputeJob> jobs = new ArrayList<>(words.size()); |
| |
| // Use imperative OOP APIs. |
| for (String word : words) { |
| // Every job gets its own word as an argument. |
| jobs.add(new ComputeJobAdapter(word) { |
| /* |
| * Simply prints the job's argument. |
| */ |
| @Nullable @Override public Serializable execute() { |
| System.out.println(">>>"); |
| System.out.println(">>> Printing '" + argument(0) + "' on this node from grid job."); |
| System.out.println(">>>"); |
| |
| // This job does not return any result. |
| return null; |
| } |
| }); |
| } |
| |
| return jobs; |
| } |
| |
| /** {@inheritDoc} */ |
| @Nullable @Override public String reduce(List<ComputeJobResult> results) throws IgniteException { |
| return String.valueOf(results.size()); |
| } |
| } |