org.apache.lucene.replicator.http.HttpReplicatorTest.java Source code

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Here is the source code for org.apache.lucene.replicator.http.HttpReplicatorTest.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.lucene.replicator.http;

import java.io.IOException;
import java.nio.file.Path;
import java.util.Collections;

import org.apache.http.impl.conn.BasicHttpClientConnectionManager;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.SnapshotDeletionPolicy;
import org.apache.lucene.replicator.IndexReplicationHandler;
import org.apache.lucene.replicator.IndexRevision;
import org.apache.lucene.replicator.LocalReplicator;
import org.apache.lucene.replicator.PerSessionDirectoryFactory;
import org.apache.lucene.replicator.ReplicationClient;
import org.apache.lucene.replicator.Replicator;
import org.apache.lucene.replicator.ReplicatorTestCase;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.IOUtils;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.junit.Before;
import org.junit.Test;

public class HttpReplicatorTest extends ReplicatorTestCase {
    private Path clientWorkDir;
    private Replicator serverReplicator;
    private IndexWriter writer;
    private DirectoryReader reader;
    private Server server;
    private int port;
    private String host;
    private Directory serverIndexDir, handlerIndexDir;
    private ReplicationServlet replicationServlet;

    private void startServer() throws Exception {
        ServletHandler replicationHandler = new ServletHandler();
        ReplicationService service = new ReplicationService(Collections.singletonMap("s1", serverReplicator));
        replicationServlet = new ReplicationServlet(service);
        ServletHolder servlet = new ServletHolder(replicationServlet);
        replicationHandler.addServletWithMapping(servlet, ReplicationService.REPLICATION_CONTEXT + "/*");
        server = newHttpServer(replicationHandler);
        port = serverPort(server);
        host = serverHost(server);
    }

    @Before
    @Override
    public void setUp() throws Exception {
        super.setUp();
        if (VERBOSE) {
            System.setProperty("org.eclipse.jetty.LEVEL", "DEBUG"); // sets stderr logging to DEBUG level
        }
        clientWorkDir = createTempDir("httpReplicatorTest");
        handlerIndexDir = newDirectory();
        serverIndexDir = newDirectory();
        serverReplicator = new LocalReplicator();
        startServer();

        IndexWriterConfig conf = newIndexWriterConfig(null);
        conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
        writer = new IndexWriter(serverIndexDir, conf);
        reader = DirectoryReader.open(writer);
    }

    @Override
    public void tearDown() throws Exception {
        stopHttpServer(server);
        writer.rollback();
        IOUtils.close(reader, handlerIndexDir, serverIndexDir);
        super.tearDown();
    }

    private void publishRevision(int id) throws IOException {
        Document doc = new Document();
        writer.addDocument(doc);
        writer.setLiveCommitData(Collections.singletonMap("ID", Integer.toString(id, 16)).entrySet());
        writer.commit();
        serverReplicator.publish(new IndexRevision(writer));
    }

    private void reopenReader() throws IOException {
        DirectoryReader newReader = DirectoryReader.openIfChanged(reader);
        assertNotNull(newReader);
        reader.close();
        reader = newReader;
    }

    @Test
    public void testBasic() throws Exception {
        Replicator replicator = new HttpReplicator(host, port, ReplicationService.REPLICATION_CONTEXT + "/s1",
                getClientConnectionManager());
        ReplicationClient client = new ReplicationClient(replicator,
                new IndexReplicationHandler(handlerIndexDir, null), new PerSessionDirectoryFactory(clientWorkDir));

        publishRevision(1);
        client.updateNow();
        reopenReader();
        assertEquals(1, Integer.parseInt(reader.getIndexCommit().getUserData().get("ID"), 16));

        publishRevision(2);
        client.updateNow();
        reopenReader();
        assertEquals(2, Integer.parseInt(reader.getIndexCommit().getUserData().get("ID"), 16));

        client.close();
    }

    @Test
    public void testServerErrors() throws Exception {
        // tests the behaviour of the client when the server sends an error
        // must use BasicClientConnectionManager to test whether the client is closed correctly
        BasicHttpClientConnectionManager conMgr = new BasicHttpClientConnectionManager();
        Replicator replicator = new HttpReplicator(host, port, ReplicationService.REPLICATION_CONTEXT + "/s1",
                conMgr);
        ReplicationClient client = new ReplicationClient(replicator,
                new IndexReplicationHandler(handlerIndexDir, null), new PerSessionDirectoryFactory(clientWorkDir));

        try {
            publishRevision(5);

            try {
                replicationServlet.setRespondWithError(true);
                client.updateNow();
                fail("expected exception");
            } catch (Throwable t) {
                // expected
            }

            replicationServlet.setRespondWithError(false);
            client.updateNow(); // now it should work
            reopenReader();
            assertEquals(5, Integer.parseInt(reader.getIndexCommit().getUserData().get("ID"), 16));

            client.close();
        } finally {
            replicationServlet.setRespondWithError(false);
        }
    }
}