/**
* Interface method implementation. Reads and processes commands sent to the service proxy.
* Expects data in the command protocol defined in the class summary. Discards commands that do
* not have a {@link TaskHandler} mapping.
*
* @see
* org.jboss.netty.channel.SimpleChannelUpstreamHandler#handleUpstream(org.jboss.netty.channel.ChannelHandlerContext,
* org.jboss.netty.channel.ChannelEvent)
*/
public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent event) throws Exception {
if (MessageEvent.class.isAssignableFrom(event.getClass())) {
CommandInterpreter commandInterpreter = new CommandInterpreter();
CommandInterpreter.ProxyCommand readCommand =
commandInterpreter.readCommand((MessageEvent) event);
LOGGER.debug("Read Command : " + readCommand);
String pool = readCommand.getCommandParams().get("pool");
TaskHandlerExecutor executor;
// Try to execute command using ThreadPool, if "pool" is found in the command, else the
// command name
if (pool != null) {
executor = this.repository.get(readCommand.getCommand(), pool);
} else {
executor = this.repository.get(readCommand.getCommand(), readCommand.getCommand());
}
executor.setParams(readCommand.getCommandParams());
executor.setData(readCommand.getCommandData());
try {
TaskResult result = executor.execute();
LOGGER.debug("The output is: " + result);
// write the results to the channel output
commandInterpreter.writeCommandExecutionResponse(ctx, event, result);
} catch (Exception e) {
LOGGER.error("Error in executing command/fallBack : " + readCommand, e);
throw new RuntimeException("Error in executing command : " + readCommand, e);
}
}
super.handleUpstream(ctx, event);
}
@Override
public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
// as seen in http://www.jboss.org/netty/community.html#nabble-td2423020
super.channelOpen(ctx, e);
if (group != null) {
group.add(ctx.getChannel());
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
if (e.getCause() instanceof JsonParseException) {
BaseTransport.respond(
e.getChannel(), HttpResponseStatus.INTERNAL_SERVER_ERROR, "Broken JSON encoding.");
} else if (e.getCause() instanceof SessionHandler.NotFoundException) {
BaseTransport.respond(
e.getChannel(),
HttpResponseStatus.NOT_FOUND,
"Session not found. Cannot send data to non-existing session.");
} else {
super.exceptionCaught(ctx, e);
}
}
public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
myAllOpenChannels.add(e.getChannel());
super.channelOpen(ctx, e);
}
@Override
public void writeComplete(ChannelHandlerContext ctx, WriteCompletionEvent e) throws Exception {
transportServiceAdapter.sent(e.getWrittenAmount());
super.writeComplete(ctx, e);
}
/**
* Overriden superclass method. Adds the newly created Channel to the default channel group and
* calls the super class {@link #channelOpen(ChannelHandlerContext, ChannelStateEvent)} method
*
* @see
* org.jboss.netty.channel.SimpleChannelUpstreamHandler#channelOpen(org.jboss.netty.channel.ChannelHandlerContext,
* org.jboss.netty.channel.ChannelStateEvent)
*/
public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent event) throws Exception {
super.channelOpen(ctx, event);
}
/**
* Overriden superclass method. Adds the newly created Channel to the default channel group and
* calls the super class {@link #channelOpen(ChannelHandlerContext, ChannelStateEvent)} method
*
* @see
* org.jboss.netty.channel.SimpleChannelUpstreamHandler#channelOpen(org.jboss.netty.channel.ChannelHandlerContext,
* org.jboss.netty.channel.ChannelStateEvent)
*/
public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent event) throws Exception {
super.channelOpen(ctx, event);
this.defaultChannelGroup.add(event.getChannel());
}
