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/*
 * Copyright 2016 the original author or authors.
 *
 * 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 org.gradle.internal.remote;

import org.gradle.internal.concurrent.AsyncStoppable;

/**
 * Manages a set of incoming and outgoing channels between 2 peers.
 *
 * NOTE: This contract guarantees only partial thread-safety. Configuration and {@link #connect()} are not thread-safe and must be performed by the same thread,
 * generally some configuration thread. Only the stop methods are thread-safe. The other methods will be made thread-safe (or moved somewhere else) later.
 */
public interface ObjectConnection extends AsyncStoppable, ObjectConnectionBuilder {
    /**
     * Completes the connection. No further configuration can be done.
     */
    void connect();

    /**
     * Commences a graceful stop of this connection. Stops accepting outgoing messages. Requests that the peer stop
     * sending incoming messages.
     */
    void requestStop();

    /**
     * Performs a graceful stop of this connection. Stops accepting outgoing messages. Blocks until all incoming messages
     * have been handled, and all outgoing messages have been forwarded to the peer.
     */
    void stop();
}