Java tutorial
/* * Copyright 2016 Crown Copyright * * Licensed 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 gaffer.accumulostore.operation.spark.handler; import static org.junit.Assert.assertEquals; import static org.junit.Assert.fail; import gaffer.commonutil.CommonConstants; import gaffer.commonutil.TestGroups; import gaffer.commonutil.TestPropertyNames; import gaffer.data.element.Edge; import gaffer.data.element.Element; import gaffer.data.element.Entity; import gaffer.graph.Graph; import gaffer.operation.OperationException; import gaffer.operation.impl.add.AddElements; import gaffer.operation.simple.spark.GetJavaRDDOfAllElements; import gaffer.user.User; import org.apache.commons.io.output.ByteArrayOutputStream; import org.apache.hadoop.conf.Configuration; import org.apache.spark.SparkConf; import org.apache.spark.api.java.JavaRDD; import org.apache.spark.api.java.JavaSparkContext; import org.junit.Test; import java.io.DataOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; public class GetJavaRDDOfAllElementsHandlerTest { @Test public void checkGetAllElementsInJavaRDD() throws OperationException, IOException { final Graph graph1 = new Graph.Builder() .addSchema(getClass().getResourceAsStream("/schema/dataSchema.json")) .addSchema(getClass().getResourceAsStream("/schema/dataTypes.json")) .addSchema(getClass().getResourceAsStream("/schema/storeTypes.json")) .storeProperties(getClass().getResourceAsStream("/store.properties")).build(); final List<Element> elements = new ArrayList<>(); final Set<Element> expectedElements = new HashSet<>(); for (int i = 0; i < 10; i++) { final Entity entity = new Entity(TestGroups.ENTITY); entity.setVertex("" + i); final Edge edge1 = new Edge(TestGroups.EDGE); edge1.setSource("" + i); edge1.setDestination("B"); edge1.setDirected(false); edge1.putProperty(TestPropertyNames.COUNT, 2); final Edge edge2 = new Edge(TestGroups.EDGE); edge2.setSource("" + i); edge2.setDestination("C"); edge2.setDirected(false); edge2.putProperty(TestPropertyNames.COUNT, 4); elements.add(edge1); elements.add(edge2); elements.add(entity); expectedElements.add(edge1); expectedElements.add(edge2); expectedElements.add(entity); } final User user = new User(); graph1.execute(new AddElements(elements), user); final SparkConf sparkConf = new SparkConf().setMaster("local") .setAppName("testCheckGetCorrectElementsInJavaRDDForEntitySeed") .set("spark.serializer", "org.apache.spark.serializer.KryoSerializer") .set("spark.kryo.registrator", "gaffer.serialisation.kryo.Registrator") .set("spark.driver.allowMultipleContexts", "true"); final JavaSparkContext sparkContext = new JavaSparkContext(sparkConf); // Create Hadoop configuration and serialise to a string final Configuration configuration = new Configuration(); final ByteArrayOutputStream baos = new ByteArrayOutputStream(); configuration.write(new DataOutputStream(baos)); final String configurationString = new String(baos.toByteArray(), CommonConstants.UTF_8); // Check get correct edges for "1" final GetJavaRDDOfAllElements rddQuery = new GetJavaRDDOfAllElements.Builder() .javaSparkContext(sparkContext).build(); rddQuery.addOption(AbstractGetRDDOperationHandler.HADOOP_CONFIGURATION_KEY, configurationString); final JavaRDD<Element> rdd = graph1.execute(rddQuery, user); if (rdd == null) { fail("No RDD returned"); } final Set<Element> results = new HashSet<>(rdd.collect()); assertEquals(expectedElements, results); sparkContext.stop(); } }