private void stopConfiguration() throws Exception {
if (configuration == null) {
// abort received but script not prepared, therefore entire script failed
if (progress == null) {
progress = new ScriptProgress(newSequential(0, 0), "");
}
RegionInfo scriptInfo = progress.getScriptInfo();
progress.addScriptFailure(scriptInfo);
} else {
// stopping the configuration will implicitly trigger the script complete listener
// to handle incomplete script that is being aborted by canceling the finish future
// clear out the pipelines for new connections to avoid impacting the observed script
for (ServerBootstrapResolver serverResolver : configuration.getServerResolvers()) {
ServerBootstrap server = serverResolver.resolve();
server.setPipelineFactory(pipelineFactory(pipeline(closeOnExceptionHandler)));
}
for (ClientBootstrapResolver clientResolver : configuration.getClientResolvers()) {
ClientBootstrap client = clientResolver.resolve();
client.setPipelineFactory(pipelineFactory(pipeline(closeOnExceptionHandler)));
}
// remove each handler from the configuration pipelines
// this will trigger failures for any handlers on a pipeline for an incomplete stream
// including pipelines not yet associated with any channel
for (ChannelPipeline pipeline : configuration.getClientAndServerPipelines()) {
stopStream(pipeline);
}
// cancel any pending binds and connects
for (ChannelFuture bindFuture : bindFutures) {
bindFuture.cancel();
}
for (ChannelFuture connectFuture : connectFutures) {
connectFuture.cancel();
}
// close server and client channels
final ChannelGroupFuture closeFuture = serverChannels.close();
closeFuture.addListener(
new ChannelGroupFutureListener() {
@Override
public void operationComplete(final ChannelGroupFuture future) {
clientChannels.close();
}
});
for (AutoCloseable resource : configuration.getResources()) {
try {
resource.close();
} catch (Exception e) {
// ignore
}
}
}
}
private ChannelFuture prepareConfiguration() throws Exception {
List<ChannelFuture> completionFutures = new ArrayList<>();
ChannelFutureListener streamCompletionListener = createStreamCompletionListener();
for (ChannelPipeline pipeline : configuration.getClientAndServerPipelines()) {
CompletionHandler completionHandler = pipeline.get(CompletionHandler.class);
ChannelFuture completionFuture = completionHandler.getHandlerFuture();
completionFutures.add(completionFuture);
completionFuture.addListener(streamCompletionListener);
}
ChannelFuture executionFuture = new CompositeChannelFuture<>(channel, completionFutures);
ChannelFutureListener executionListener = createScriptCompletionListener();
executionFuture.addListener(executionListener);
return prepareServers();
}
private ChannelFuture prepareServers() throws Exception {
/* Accept's ... Robot acting as a server */
for (ServerBootstrapResolver serverResolver : configuration.getServerResolvers()) {
ServerBootstrap server = serverResolver.resolve();
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Binding to address " + server.getOption("localAddress"));
}
/* Keep track of the client channels */
server.setParentHandler(
new SimpleChannelHandler() {
@Override
public void childChannelOpen(ChannelHandlerContext ctx, ChildChannelStateEvent e)
throws Exception {
clientChannels.add(e.getChildChannel());
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e)
throws Exception {
Channel channel = ctx.getChannel();
channel.close();
}
});
// Bind Asynchronously
ChannelFuture bindFuture = server.bindAsync();
// Add to out serverChannel Group
serverChannels.add(bindFuture.getChannel());
// Add to our list of bindFutures so we can cancel them later on a possible abort
bindFutures.add(bindFuture);
// Listen for the bindFuture.
RegionInfo regionInfo = (RegionInfo) server.getOption("regionInfo");
bindFuture.addListener(
createBindCompleteListener(regionInfo, serverResolver.getNotifyBarrier()));
}
return new CompositeChannelFuture<>(channel, bindFutures);
}
private void startConfiguration() throws Exception {
/* Connect to any clients */
for (final ClientBootstrapResolver clientResolver : configuration.getClientResolvers()) {
Barrier awaitBarrier = clientResolver.getAwaitBarrier();
if (awaitBarrier != null) {
awaitBarrier
.getFuture()
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
connectClient(clientResolver);
}
});
} else {
connectClient(clientResolver);
}
}
}