public final void processResponseInternal(BaseMessageContextImpl ctx) {
MessageContextAccessorImpl.blockPreviousContext();
try {
ServiceDesc serviceDesc = ctx.getServiceDesc();
try {
Dispatcher requestDispatcher = serviceDesc.getRequestDispatcher();
requestDispatcher.retrieve(ctx, ctx.getFutureResponse());
} catch (Throwable e) {
handleRequestDispatchException(ctx, e);
handleAbortedRequestDispatch(ctx);
}
runResponseSequence(ctx);
Long processingStartTime =
(Long) ctx.getProperty(SystemMetricDefs.CTX_KEY_MSG_PROCESSING_STARTED);
updateMonitoringAfterProcessing(ctx, processingStartTime.longValue());
} finally {
MessageContextAccessorImpl.resetContext();
}
}
void runResponseSequence(BaseMessageContextImpl ctx) {
ServiceDesc serviceDesc = ctx.getServiceDesc();
long startTime = System.nanoTime();
// flip the processing stage
ctx.changeProcessingStage(MessageProcessingStage.RESPONSE_PIPELINE);
ctx.runLoggingHandlerStage(LoggingHandlerStage.RESPONSE_STARTED);
// run the protocol processor
try {
ProtocolProcessor protocol = ctx.getProtocolProcessor();
protocol.beforeResponsePipeline(ctx);
} catch (Throwable e) {
handleResponseProtocolProcessingException(ctx, e);
}
// run the pipeline
try {
Pipeline responsePipeline = serviceDesc.getResponsePipeline();
responsePipeline.invoke(ctx);
} catch (Throwable e) {
handleResponseProcessingException(ctx, e);
}
// run the protocol processor
try {
ProtocolProcessor protocol = ctx.getProtocolProcessor();
protocol.beforeResponseDispatch(ctx);
} catch (Throwable e) {
handleResponseProtocolProcessingException(ctx, e);
}
// flip the processing stage
ctx.changeProcessingStage(MessageProcessingStage.RESPONSE_DISPATCH);
boolean canProcessResponse = true;
try {
processPreResponseDispatchErrors(ctx);
} catch (Throwable e) {
// cannot do anything if errors are not processed
canProcessResponse = false;
handlePostResponseDispatchException(ctx, e);
}
long duration = System.nanoTime() - startTime;
ctx.updateSvcAndOpMetric(SystemMetricDefs.OP_TIME_PIPELINE_RESPONSE, startTime, duration);
if (canProcessResponse) {
/*
* Returning response is a seperate step. It is also abstracted out
* through a dispatcher. In the case of a servlet, the
* responseDispatcher is simply writing the data to the
* HTTPResponse's outputstream. In the case of a Loaclbinding and
* client cases, the response dispatcher simply returns and does
* nothing. In the case of an asynchronous model, the response
* dispatcher may use a connection and send the response back.
*/
// TODO: add timing for response dispatcher on server (both sync and
// async cases)
// TO DO: fix async case - we should use callback and uplink here as
// we cannot call logger yet
try {
// run through the response dispatcher.
Dispatcher responseDispatcher = serviceDesc.getResponseDispatcher();
responseDispatcher.dispatchSynchronously(ctx);
} catch (Throwable e) {
handlePostResponseDispatchException(ctx, e);
}
}
ctx.changeProcessingStage(MessageProcessingStage.RESPONSE_COMPLETE);
ctx.runLoggingHandlerStage(LoggingHandlerStage.RESPONSE_COMPLETE);
}