org.apache.whirr.service.pig.integration.PigServiceTest.java Source code

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Here is the source code for org.apache.whirr.service.pig.integration.PigServiceTest.java

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/**
 * 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.whirr.service.pig.integration;

import com.google.common.base.Predicate;
import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.whirr.Cluster;
import org.apache.whirr.ClusterController;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.TestConstants;
import org.apache.whirr.state.ClusterStateStoreFactory;
import org.jclouds.compute.domain.ExecResponse;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.scriptbuilder.domain.Statement;
import org.jclouds.scriptbuilder.domain.Statements;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.Map;

import static com.google.common.base.Predicates.alwaysTrue;
import static com.google.common.base.Predicates.and;
import static com.google.common.collect.Sets.newHashSet;
import static junit.framework.Assert.failNotEquals;
import static org.apache.whirr.RolePredicates.anyRoleIn;
import static org.apache.whirr.service.pig.PigClientClusterActionHandler.PIG_CLIENT_ROLE;
import static org.jclouds.compute.predicates.NodePredicates.withIds;

/**
 * Install the pig binary distribution.
 */
public class PigServiceTest {

    private static final Logger LOG = LoggerFactory.getLogger(PigServiceTest.class);

    private static ClusterSpec clusterSpec;
    private static ClusterController controller;

    @BeforeClass
    public static void setUp() throws Exception {
        CompositeConfiguration config = new CompositeConfiguration();
        if (System.getProperty("config") != null) {
            config.addConfiguration(new PropertiesConfiguration(System.getProperty("config")));
        }
        config.addConfiguration(new PropertiesConfiguration("whirr-pig-test.properties"));
        clusterSpec = ClusterSpec.withTemporaryKeys(config);
        controller = new ClusterController();
        controller.launchCluster(clusterSpec);
    }

    @AfterClass
    public static void tearDown() throws IOException, InterruptedException {
        if (controller != null) {
            controller.destroyCluster(clusterSpec);
        }
    }

    @Test(timeout = TestConstants.ITEST_TIMEOUT)
    public void testPigBin() throws Exception {
        Statement binPig = Statements.exec(". /etc/profile && pig -e fs -ls /");

        Cluster.Instance pigInstance = findPigInstance();
        Predicate<NodeMetadata> pigClientRole = and(alwaysTrue(), withIds(pigInstance.getId()));

        Map<? extends NodeMetadata, ExecResponse> responses = controller.runScriptOnNodesMatching(clusterSpec,
                pigClientRole, binPig);

        LOG.info("Responses for Statement: " + binPig);
        for (Map.Entry<? extends NodeMetadata, ExecResponse> entry : responses.entrySet()) {
            LOG.info("Node[" + entry.getKey().getId() + "]: " + entry.getValue());
        }

        assertResponsesContain(responses, binPig, "/hadoop");
    }

    public static void assertResponsesContain(Map<? extends NodeMetadata, ExecResponse> responses,
            Statement statement, String text) {
        for (Map.Entry<? extends NodeMetadata, ExecResponse> entry : responses.entrySet()) {
            if (!entry.getValue().getOutput().contains(text)) {
                failNotEquals("Node: " + entry.getKey().getId() + " failed to execute the command: " + statement
                        + " as could not find expected text", text, entry.getValue());
            }
        }
    }

    private Cluster.Instance findPigInstance() throws IOException {
        Cluster cluster = new ClusterStateStoreFactory().create(clusterSpec).load();
        return cluster.getInstanceMatching(anyRoleIn(newHashSet(PIG_CLIENT_ROLE)));
    }
}