EmbeddedElasticsearchServer.java

/**
 * 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.metamodel.elasticsearch.rest.utils;

import org.apache.commons.io.FileUtils;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.node.Node;

import java.io.File;
import java.io.IOException;

import static org.elasticsearch.node.NodeBuilder.nodeBuilder;

public class EmbeddedElasticsearchServer {

    private static final String DEFAULT_DATA_DIRECTORY = "target/elasticsearch-data";

    private final Node node;
    private final String dataDirectory;

    public EmbeddedElasticsearchServer() {
        this(DEFAULT_DATA_DIRECTORY);
    }

    public EmbeddedElasticsearchServer(String dataDirectory) {
        this.dataDirectory = dataDirectory;

        ImmutableSettings.Builder elasticsearchSettings = ImmutableSettings.settingsBuilder()
                .put("http.enabled", "true")
                .put("path.data", dataDirectory)
                .put("http.port", 9292);

        node = nodeBuilder()
                .local(true)
                .settings(elasticsearchSettings.build())
                .node();
    }

    public Client getClient() {
        return node.client();
    }

    public void shutdown() {
        node.close();
        deleteDataDirectory();
    }

    private void deleteDataDirectory() {
        try {
            FileUtils.deleteDirectory(new File(dataDirectory));
        } catch (IOException e) {
            throw new RuntimeException("Could not delete data directory of embedded elasticsearch server", e);
        }
    }
}