Examples with ChannelGroupFutureListener io.netty.channel.group.ChannelGroupFutureListener used on opensource projects

Example 1 with ChannelGroupFutureListener

use of io.netty.channel.group.ChannelGroupFutureListener in project rest.li by linkedin.

the class HttpNettyClient method shutdown.

@Override
public void shutdown(final Callback<None> callback) {
    LOG.info("Shutdown requested");
    if (_state.compareAndSet(State.RUNNING, State.SHUTTING_DOWN)) {
        LOG.info("Shutting down");
        final long deadline = System.currentTimeMillis() + _shutdownTimeout;
        TimeoutCallback<None> closeChannels = new TimeoutCallback<None>(_scheduler, _shutdownTimeout, TimeUnit.MILLISECONDS, new Callback<None>() {

            private void finishShutdown() {
                _state.set(State.REQUESTS_STOPPING);
                // Timeout any waiters which haven't received a Channel yet
                for (Callback<Channel> callback : _channelPoolManager.cancelWaiters()) {
                    callback.onError(new TimeoutException("Operation did not complete before shutdown"));
                }
                // Timeout any requests still pending response
                for (Channel c : _allChannels) {
                    TransportCallback<RestResponse> callback = c.attr(RAPResponseHandler.CALLBACK_ATTR_KEY).getAndRemove();
                    if (callback != null) {
                        errorResponse(callback, new TimeoutException("Operation did not complete before shutdown"));
                    }
                }
                // Close all active and idle Channels
                final TimeoutRunnable afterClose = new TimeoutRunnable(_scheduler, deadline - System.currentTimeMillis(), TimeUnit.MILLISECONDS, new Runnable() {

                    @Override
                    public void run() {
                        _state.set(State.SHUTDOWN);
                        LOG.info("Shutdown complete");
                        callback.onSuccess(None.none());
                    }
                }, "Timed out waiting for channels to close, continuing shutdown");
                _allChannels.close().addListener(new ChannelGroupFutureListener() {

                    @Override
                    public void operationComplete(ChannelGroupFuture channelGroupFuture) throws Exception {
                        if (!channelGroupFuture.isSuccess()) {
                            LOG.warn("Failed to close some connections, ignoring");
                        }
                        afterClose.run();
                    }
                });
            }

            @Override
            public void onSuccess(None none) {
                LOG.info("All connection pools shut down, closing all channels");
                finishShutdown();
            }

            @Override
            public void onError(Throwable e) {
                LOG.warn("Error shutting down HTTP connection pools, ignoring and continuing shutdown", e);
                finishShutdown();
            }
        }, "Connection pool shutdown timeout exceeded (" + _shutdownTimeout + "ms)");
        _channelPoolManager.shutdown(closeChannels);
        _jmxManager.onProviderShutdown(_channelPoolManager);
    } else {
        callback.onError(new IllegalStateException("Shutdown has already been requested."));
    }
}