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/*
* Copyright 2015, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
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*
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* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
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* in the documentation and/or other materials provided with the
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*
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* contributors may be used to endorse or promote products derived from
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package nl.topicus.jdbc.shaded.io.grpc;
import java.util.concurrent.TimeUnit;
import nl.topicus.jdbc.shaded.javax.annotation.concurrent.ThreadSafe;
/**
* A {@link Channel} that provides lifecycle management.
*/
@ThreadSafe
public abstract class ManagedChannel extends Channel {
/**
* Initiates an orderly shutdown in which preexisting calls continue but new calls are immediately
* cancelled.
*
* @return this
* @since 1.0.0
*/
public abstract ManagedChannel shutdown();
/**
* Returns whether the channel is shutdown. Shutdown channels immediately cancel any new calls,
* but may still have some calls being processed.
*
* @see #shutdown()
* @see #isTerminated()
* @since 1.0.0
*/
public abstract boolean isShutdown();
/**
* Returns whether the channel is terminated. Terminated channels have no running calls and
* relevant resources released (like TCP connections).
*
* @see #isShutdown()
* @since 1.0.0
*/
public abstract boolean isTerminated();
/**
* Initiates a forceful shutdown in which preexisting and new calls are cancelled. Although
* forceful, the shutdown process is still not instantaneous; {@link #isTerminated()} will likely
* return {@code false} immediately after this method returns.
*
* @return this
* @since 1.0.0
*/
public abstract ManagedChannel shutdownNow();
/**
* Waits for the channel to become terminated, giving up if the timeout is reached.
*
* @return whether the channel is terminated, as would be done by {@link #isTerminated()}.
* @since 1.0.0
*/
public abstract boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException;
/**
* Gets the current connectivity state. Note the result may soon become outdated.
*
* Warning: this API is not yet implemented by the gRPC library (issue on github).
*
* @param requestConnection if {@code true}, the channel will try to make a connection if it is
* currently IDLE
* @throws UnsupportedOperationException if not supported by implementation
* @since 1.1.0
*/
@ExperimentalApi("https://github.nl.topicus.jdbc.shaded.com.grpc/grpc-java/issues/28")
public ConnectivityState getState(boolean requestConnection) {
throw new UnsupportedOperationException("Not implemented");
}
/**
* Registers a one-off callback that will be run if the connectivity state of the channel diverges
* from the given {@code source}, which is typically what has just been returned by {@link
* #getState}. If the states are already different, the callback will be called immediately. The
* callback is run in the same executor that runs Call listeners.
*
*
Warning: this API is not yet implemented by the gRPC library (issue on github).
*
* @param source the assumed current state, typically just returned by {@link #getState}
* @param callback the one-off callback
* @throws UnsupportedOperationException if not supported by implementation
* @since 1.1.0
*/
@ExperimentalApi("https://github.nl.topicus.jdbc.shaded.com.grpc/grpc-java/issues/28")
public void notifyWhenStateChanged(ConnectivityState source, Runnable callback) {
throw new UnsupportedOperationException("Not implemented");
}
}