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/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.elasticsearch.action;

import org.elasticsearch.common.unit.TimeValue;

import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

/**
 * An extension to {@link Future} allowing for simplified "get" operations.
 *
 *
 */
public interface ActionFuture extends Future {

    /**
     * Similar to {@link #get()}, just catching the {@link InterruptedException} and throwing
     * an {@link IllegalStateException} instead. Also catches
     * {@link java.util.concurrent.ExecutionException} and throws the actual cause instead.
     */
    T actionGet();

    /**
     * Similar to {@link #get(long, java.util.concurrent.TimeUnit)}, just catching the {@link InterruptedException} and throwing
     * an {@link IllegalStateException} instead. Also catches
     * {@link java.util.concurrent.ExecutionException} and throws the actual cause instead.
     */
    T actionGet(String timeout);

    /**
     * Similar to {@link #get(long, java.util.concurrent.TimeUnit)}, just catching the {@link InterruptedException} and throwing
     * an {@link IllegalStateException} instead. Also catches
     * {@link java.util.concurrent.ExecutionException} and throws the actual cause instead.
     *
     * @param timeoutMillis Timeout in millis
     */
    T actionGet(long timeoutMillis);

    /**
     * Similar to {@link #get(long, java.util.concurrent.TimeUnit)}, just catching the {@link InterruptedException} and throwing
     * an {@link IllegalStateException} instead. Also catches
     * {@link java.util.concurrent.ExecutionException} and throws the actual cause instead.
     */
    T actionGet(long timeout, TimeUnit unit);

    /**
     * Similar to {@link #get(long, java.util.concurrent.TimeUnit)}, just catching the {@link InterruptedException} and throwing
     * an {@link IllegalStateException} instead. Also catches
     * {@link java.util.concurrent.ExecutionException} and throws the actual cause instead.
     */
    T actionGet(TimeValue timeout);
}