From f945415210f0e18c2c6d941fda6b7d45cb0f06f1 Mon Sep 17 00:00:00 2001 From: Don Kjer Date: Wed, 13 Mar 2013 06:26:25 +0000 Subject: Large changes to the LLCurl::Responder API, as well as pulling in some changes to common libraries from the server codebase: * Additional error checking in http handlers. * Uniform log spam for http errors. * Switch to using constants for http heads and status codes. * Fixed bugs in incorrectly checking if parsing LLSD xml resulted in an error. * Reduced spam regarding LLSD parsing errors in the default completedRaw http handler. It should not longer be necessary to short-circuit completedRaw to avoid spam. * Ported over a few bug fixes from the server code. * Switch mode http status codes to use S32 instead of U32. * Ported LLSD::asStringRef from server code; avoids copying strings all over the place. * Ported server change to LLSD::asBinary; this always returns a reference now instead of copying the entire binary blob. * Ported server pretty notation format (and pretty binary format) to llsd serialization. * The new LLCurl::Responder API no longer has two error handlers to choose from. Overriding the following methods have been deprecated: ** error - use httpFailure ** errorWithContent - use httpFailure ** result - use httpSuccess ** completed - use httpCompleted ** completedHeader - no longer necessary; call getResponseHeaders() from a completion method to obtain these headers. * In order to 'catch' a completed http request, override one of these methods: ** httpSuccess - Called for any 2xx status code. ** httpFailure - Called for any non-2xx status code. ** httpComplete - Called for all status codes. Default implementation is to call either httpSuccess or httpFailure. * It is recommended to keep these methods protected/private in order to avoid triggering of these methods without using a 'push' method (see below). * Uniform error handling should followed whenever possible by calling a variant of this during httpFailure: ** llwarns << dumpResponse() << llendl; * Be sure to include LOG_CLASS(your_class_name) in your class in order for the log entry to give more context. * In order to 'push' a result into the responder, you should no longer call error, errorWithContent, result, or completed. * Nor should you directly call httpSuccess/Failure/Completed (unless passing a message up to a parent class). * Instead, you can set the internal content of a responder and trigger a corresponding method using the following methods: ** successResult - Sets results and calls httpSuccess ** failureResult - Sets results and calls httpFailure ** completedResult - Sets results and calls httpCompleted * To obtain information about a the response from a reponder method, use the following getters: ** getStatus - HTTP status code ** getReason - Reason string ** getContent - Content (Parsed body LLSD) ** getResponseHeaders - Response Headers (LLSD map) ** getHTTPMethod - HTTP method of the request ** getURL - URL of the request * It is still possible to override completeRaw if you want to manipulate data directly out of LLPumpIO. * See indra/llmessage/llcurl.h for more information. --- indra/newview/lleventpoll.cpp | 45 ++++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 22 deletions(-) (limited to 'indra/newview/lleventpoll.cpp') diff --git a/indra/newview/lleventpoll.cpp b/indra/newview/lleventpoll.cpp index e0f7223a8c..c3b53d5e4a 100644 --- a/indra/newview/lleventpoll.cpp +++ b/indra/newview/lleventpoll.cpp @@ -31,7 +31,7 @@ #include "llagent.h" #include "llhttpclient.h" -#include "llhttpstatuscodes.h" +#include "llhttpconstants.h" #include "llsdserialize.h" #include "lleventtimer.h" #include "llviewerregion.h" @@ -49,6 +49,7 @@ namespace class LLEventPollResponder : public LLHTTPClient::Responder { + LOG_CLASS(LLEventPollResponder); public: static LLHTTPClient::ResponderPtr start(const std::string& pollURL, const LLHost& sender); @@ -56,19 +57,19 @@ namespace void makeRequest(); + /* virtual */ void completedRaw(const LLChannelDescriptors& channels, + const LLIOPipe::buffer_ptr_t& buffer); + private: LLEventPollResponder(const std::string& pollURL, const LLHost& sender); ~LLEventPollResponder(); void handleMessage(const LLSD& content); - virtual void errorWithContent(U32 status, const std::string& reason, const LLSD& content); - virtual void result(const LLSD& content); - virtual void completedRaw(U32 status, - const std::string& reason, - const LLChannelDescriptors& channels, - const LLIOPipe::buffer_ptr_t& buffer); + /* virtual */ void httpFailure(); + /* virtual */ void httpSuccess(); + private: bool mDone; @@ -149,20 +150,18 @@ namespace } // virtual - void LLEventPollResponder::completedRaw(U32 status, - const std::string& reason, - const LLChannelDescriptors& channels, - const LLIOPipe::buffer_ptr_t& buffer) + void LLEventPollResponder::completedRaw(const LLChannelDescriptors& channels, + const LLIOPipe::buffer_ptr_t& buffer) { - if (status == HTTP_BAD_GATEWAY) + if (getStatus() == HTTP_BAD_GATEWAY) { // These errors are not parsable as LLSD, // which LLHTTPClient::Responder::completedRaw will try to do. - completed(status, reason, LLSD()); + httpCompleted(); } else { - LLHTTPClient::Responder::completedRaw(status,reason,channels,buffer); + LLHTTPClient::Responder::completedRaw(channels,buffer); } } @@ -187,13 +186,13 @@ namespace } //virtual - void LLEventPollResponder::errorWithContent(U32 status, const std::string& reason, const LLSD& content) + void LLEventPollResponder::httpFailure() { if (mDone) return; // A HTTP_BAD_GATEWAY (502) error is our standard timeout response // we get this when there are no events. - if ( status == HTTP_BAD_GATEWAY ) + if ( getStatus() == HTTP_BAD_GATEWAY ) { mErrorCount = 0; makeRequest(); @@ -207,12 +206,12 @@ namespace + mErrorCount * EVENT_POLL_ERROR_RETRY_SECONDS_INC , this); - llwarns << "LLEventPollResponder error [status:" << status << "]: " << content << llendl; + llwarns << dumpResponse() << llendl; } else { - llwarns << "LLEventPollResponder error <" << mCount - << "> [status:" << status << "]: " << content + llwarns << dumpResponse() + << " [count:" << mCount << "] " << (mDone ? " -- done" : "") << llendl; stop(); @@ -234,7 +233,7 @@ namespace } //virtual - void LLEventPollResponder::result(const LLSD& content) + void LLEventPollResponder::httpSuccess() { lldebugs << "LLEventPollResponder::result <" << mCount << ">" << (mDone ? " -- done" : "") << llendl; @@ -243,10 +242,12 @@ namespace mErrorCount = 0; - if (!content.get("events") || + const LLSD& content = getContent(); + if (!content.isMap() || + !content.get("events") || !content.get("id")) { - llwarns << "received event poll with no events or id key" << llendl; + llwarns << "received event poll with no events or id key: " << dumpResponse() << llendl; makeRequest(); return; } -- cgit v1.2.3