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// Copyright (c) 2017 Microsoft Corporation
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package com.microsoft.graph.concurrency;

import com.microsoft.graph.core.ClientException;

/**
 * A way to manage scheduled actions that are run in the foreground or background threading environments
 */
public interface IExecutors {

    /**
     * Runs the given Runnable on the background thread
     * 
     * @param runnable the Runnable to execute
     */
    void performOnBackground(final Runnable runnable);

    /**
     * Performs the given callback with the result object
     *
     * @param result   the result value
     * @param callback the callback to call on the foreground with this result
     * @param <Result> the result type
     */
    <Result> void performOnForeground(final Result result,
                                      final ICallback<Result> callback);

    /**
     * Performs the given callback with the result object
     * 
     * @param progress    the progress value
     * @param progressMax the max progress value
     * @param callback    the callback to call on the foreground with this result
     * @param <Result>    the result type
     */
    <Result> void performOnForeground(final int progress,
                                      final int progressMax,
                                      final IProgressCallback<Result> callback);

    /**
     * Performs the given callback with the exception object
     * 
     * @param exception the exception value
     * @param callback the callback to call on the foreground with this exception
     * @param <Result> the result type
     */
    <Result> void performOnForeground(final ClientException exception,
                                      final ICallback<Result> callback);
    
    /**
     * Shuts down the background executors
     */
    void shutdownBackgroundExecutors();
}
