com.cloudera.llama.am.TestLlamaHAServer.java Source code

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Here is the source code for com.cloudera.llama.am.TestLlamaHAServer.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 com.cloudera.llama.am;

import com.cloudera.llama.am.api.LlamaAM;
import com.cloudera.llama.am.mock.MockLlamaAMFlags;
import com.cloudera.llama.am.mock.MockRMConnector;
import com.cloudera.llama.am.spi.RMConnector;
import com.cloudera.llama.server.ServerConfiguration;
import com.cloudera.llama.server.TestAbstractMain;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ha.ServiceFailedException;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

public class TestLlamaHAServer {
    private LlamaHAServer server;

    @Before
    public void setup() {
        Configuration conf = new Configuration(false);
        conf.set(ServerConfiguration.CONFIG_DIR_KEY, TestAbstractMain.createTestDir());
        conf.setClass(LlamaAM.RM_CONNECTOR_CLASS_KEY, MockRMConnector.class, RMConnector.class);
        conf.set(LlamaAM.CORE_QUEUES_KEY, "root.q1,root.q2");
        conf.set(MockRMConnector.QUEUES_KEY, "root.q1,root.q2");
        String nodesKey = "" + MockLlamaAMFlags.ALLOCATE + "n1";
        conf.set(MockRMConnector.NODES_KEY, nodesKey);
        conf.setInt(MockRMConnector.EVENTS_MIN_WAIT_KEY, 5);
        conf.setInt(MockRMConnector.EVENTS_MAX_WAIT_KEY, 10);

        ServerConfiguration sConf = new AMServerConfiguration(conf);
        conf.set(sConf.getPropertyName(ServerConfiguration.SERVER_ADDRESS_KEY), "localhost:0");
        conf.set(sConf.getPropertyName(ServerConfiguration.SERVER_ADMIN_ADDRESS_KEY), "localhost:0");
        conf.set(sConf.getPropertyName(ServerConfiguration.HTTP_ADDRESS_KEY), "localhost:0");

        conf.setBoolean(HAServerConfiguration.HA_ENABLED, true);
        server = new LlamaHAServer();
        server.setConf(conf);
    }

    @Test
    public void testHAEnabledStartsInStandby() {
        assertFalse("Server is already active", server.isActive());
    }

    @Test
    public void testBecomeActive() throws ServiceFailedException {
        server.becomeActive();
        assertTrue("Server still not active", server.isActive());
    }

    @Test
    public void testBecomeStandby() throws ServiceFailedException {
        server.becomeActive();
        server.becomeStandby();
        assertFalse("Server still active", server.isActive());
    }

    @Test
    public void testForegoActive() throws ServiceFailedException {
        server.becomeActive();
        server.foregoActive(0);
        assertFalse("Server still active", server.isActive());
    }

    @Test
    public void testMultipleBecomeActive() throws ServiceFailedException {
        server.becomeActive();
        server.becomeActive();
        assertTrue("Server should remain active", server.isActive());
    }

    @Test
    public void testMultipleBecomeStandby() throws ServiceFailedException {
        server.becomeActive();
        server.becomeStandby();
        server.becomeStandby();
        assertFalse("Server should remain Standby", server.isActive());
    }
}