fr.pilato.spring.elasticsearch.ElasticsearchNodeFactoryBean.java Source code

Introduction

Here is the source code for fr.pilato.spring.elasticsearch.ElasticsearchNodeFactoryBean.java

Source

/*
 * Licensed to David Pilato (the "Author") under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Author 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 fr.pilato.spring.elasticsearch;

import fr.pilato.spring.elasticsearch.proxy.GenericInvocationHandler;

import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.node.Node;
import org.elasticsearch.node.NodeBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;

import java.util.concurrent.Callable;
import java.util.concurrent.Future;

/**
 * A {@link FactoryBean} implementation used to create a {@link Node} element
 * which is an embedded instance of the cluster within a running application.
 * <p>
 * The lifecycle of the underlying {@link Node} instance is tied to the
 * lifecycle of the bean via the {@link #destroy()} method which calls
 * {@link Node#close()}
 * @see ElasticsearchAbstractFactoryBean
 * @author David Pilato
 */
public class ElasticsearchNodeFactoryBean extends ElasticsearchAbstractFactoryBean
        implements FactoryBean<Node>, InitializingBean, DisposableBean {

    protected final Logger logger = LoggerFactory.getLogger(getClass());

    private Node node;
    private Node proxyfiedNode;

    @Override
    public void afterPropertiesSet() throws Exception {

        if (async) {
            Assert.notNull(taskExecutor);

            Future<Node> nodeFuture = taskExecutor.submit(new Callable<Node>() {
                @Override
                public Node call() throws Exception {
                    return initialize();
                }
            });

            ProxyFactory proxyFactory = new ProxyFactory();
            proxyFactory.setProxyTargetClass(true);
            proxyFactory.setTargetClass(Node.class);
            proxyFactory.addAdvice(new GenericInvocationHandler(nodeFuture));
            proxyfiedNode = (Node) proxyFactory.getProxy();

        } else {
            node = initialize();
        }
    }

    @Override
    public void destroy() throws Exception {
        try {
            logger.info("Closing ElasticSearch node " + node.settings().get("name"));
            node.close();
        } catch (final Exception e) {
            logger.error("Error closing Elasticsearch node: ", e);
        }
    }

    @Override
    public Node getObject() throws Exception {
        return async ? proxyfiedNode : node;
    }

    @Override
    public Class<Node> getObjectType() {
        return Node.class;
    }

    @Override
    public boolean isSingleton() {
        return true;
    }

    private Node initialize() {
        final NodeBuilder nodeBuilder = NodeBuilder.nodeBuilder();

        if (null != settings && null == properties) {
            logger.warn(
                    "settings has been deprecated in favor of properties. See issue #15: https://github.com/dadoonet/spring-elasticsearch/issues/15.");
            nodeBuilder.getSettings().put(settings);
        }

        if (null != settingsFile && null == properties) {
            Settings settings = Settings.builder().loadFromStream(settingsFile,
                    ElasticsearchNodeFactoryBean.class.getResourceAsStream("/" + settingsFile)).build();
            nodeBuilder.getSettings().put(settings);
        }

        if (null != properties) {
            nodeBuilder.getSettings().put(properties);
        }

        if (logger.isDebugEnabled())
            logger.debug("Starting ElasticSearch node...");
        node = nodeBuilder.node();
        logger.info("Node [" + node.settings().get("name") + "] for [" + node.settings().get("cluster.name")
                + "] cluster started...");
        if (logger.isDebugEnabled())
            logger.debug("  - home : " + node.settings().get("path.home"));
        if (logger.isDebugEnabled())
            logger.debug("  - data : " + node.settings().get("path.data"));
        if (logger.isDebugEnabled())
            logger.debug("  - logs : " + node.settings().get("path.logs"));

        return node;
    }

}