at.molindo.esi4j.util.ListenableAsyncResult.java Source code

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Here is the source code for at.molindo.esi4j.util.ListenableAsyncResult.java

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/**
 * Copyright 2010 Molindo GmbH
 *
 * Licensed 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 at.molindo.esi4j.util;

import java.util.concurrent.TimeUnit;

import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.ListenableActionFuture;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.support.InternalTransportClient;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.threadpool.ThreadPool;

import at.molindo.thirdparty.org.springframework.scheduling.annotation.AsyncResult;

public class ListenableAsyncResult<V> extends AsyncResult<V> implements ListenableActionFuture<V> {

    private final ThreadPool _threadPool;

    public static <V> ListenableAsyncResult<V> create(V value) {
        return new ListenableAsyncResult<V>(value, null);
    }

    public static <V> ListenableAsyncResult<V> create(V value, Client client, ActionRequest<?> request) {
        return new ListenableAsyncResult<V>(value,
                request.listenerThreaded() ? ((InternalTransportClient) client).threadPool() : null);
    }

    public ListenableAsyncResult(V value, ThreadPool threadPool) {
        super(value);
        _threadPool = threadPool;
    }

    @Override
    public V actionGet() throws ElasticsearchException {
        return get();
    }

    @Override
    public V actionGet(String timeout) throws ElasticsearchException {
        return get();
    }

    @Override
    public V actionGet(long timeoutMillis) throws ElasticsearchException {
        return get();
    }

    @Override
    public V actionGet(long timeout, TimeUnit unit) throws ElasticsearchException {
        return get();
    }

    @Override
    public V actionGet(TimeValue timeout) throws ElasticsearchException {
        return get();
    }

    @Override
    public Throwable getRootFailure() {
        return null;
    }

    @Override
    public void addListener(final ActionListener<V> listener) {
        executeListener(listener);
    }

    private void executeListener(final ActionListener<V> listener) {
        executeListener(new Runnable() {

            @Override
            public void run() {
                listener.onResponse(get());
            }
        });
    }

    private void executeListener(final Runnable listener) {
        if (_threadPool != null) {
            _threadPool.generic().execute(listener);
        } else {
            listener.run();
        }
    }

}