diff options
Diffstat (limited to 'indra/newview/lleventpoll.cpp')
| -rw-r--r--[-rwxr-xr-x] | indra/newview/lleventpoll.cpp | 486 |
1 files changed, 241 insertions, 245 deletions
diff --git a/indra/newview/lleventpoll.cpp b/indra/newview/lleventpoll.cpp index 4de6ad4d2f..cc77b407ae 100755..100644 --- a/indra/newview/lleventpoll.cpp +++ b/indra/newview/lleventpoll.cpp @@ -30,261 +30,257 @@ #include "llappviewer.h" #include "llagent.h" -#include "llhttpclient.h" -#include "llhttpconstants.h" #include "llsdserialize.h" #include "lleventtimer.h" #include "llviewerregion.h" #include "message.h" #include "lltrans.h" +#include "llcoros.h" +#include "lleventcoro.h" +#include "llcorehttputil.h" +#include "lleventfilter.h" -namespace +#include "boost/make_shared.hpp" + +namespace LLEventPolling +{ +namespace Details { - // We will wait RETRY_SECONDS + (errorCount * RETRY_SECONDS_INC) before retrying after an error. - // This means we attempt to recover relatively quickly but back off giving more time to recover - // until we finally give up after MAX_EVENT_POLL_HTTP_ERRORS attempts. - const F32 EVENT_POLL_ERROR_RETRY_SECONDS = 15.f; // ~ half of a normal timeout. - const F32 EVENT_POLL_ERROR_RETRY_SECONDS_INC = 5.f; // ~ half of a normal timeout. - const S32 MAX_EVENT_POLL_HTTP_ERRORS = 10; // ~5 minutes, by the above rules. - - class LLEventPollResponder : public LLHTTPClient::Responder - { - LOG_CLASS(LLEventPollResponder); - public: - - static LLHTTPClient::ResponderPtr start(const std::string& pollURL, const LLHost& sender); - void stop(); - - 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 httpFailure(); - /* virtual */ void httpSuccess(); - - private: - - bool mDone; - - std::string mPollURL; - std::string mSender; - - LLSD mAcknowledge; - - // these are only here for debugging so we can see which poller is which - static int sCount; - int mCount; - S32 mErrorCount; - }; - - class LLEventPollEventTimer : public LLEventTimer - { - typedef LLPointer<LLEventPollResponder> EventPollResponderPtr; - - public: - LLEventPollEventTimer(F32 period, EventPollResponderPtr responder) - : LLEventTimer(period), mResponder(responder) - { } - - virtual BOOL tick() - { - mResponder->makeRequest(); - return TRUE; // Causes this instance to be deleted. - } - - private: - - EventPollResponderPtr mResponder; - }; - - //static - LLHTTPClient::ResponderPtr LLEventPollResponder::start( - const std::string& pollURL, const LLHost& sender) - { - LLHTTPClient::ResponderPtr result = new LLEventPollResponder(pollURL, sender); - LL_INFOS() << "LLEventPollResponder::start <" << sCount << "> " - << pollURL << LL_ENDL; - return result; - } - - void LLEventPollResponder::stop() - { - LL_INFOS() << "LLEventPollResponder::stop <" << mCount << "> " - << mPollURL << LL_ENDL; - // there should be a way to stop a LLHTTPClient request in progress - mDone = true; - } - - int LLEventPollResponder::sCount = 0; - - LLEventPollResponder::LLEventPollResponder(const std::string& pollURL, const LLHost& sender) - : mDone(false), - mPollURL(pollURL), - mCount(++sCount), - mErrorCount(0) - { - //extract host and port of simulator to set as sender - LLViewerRegion *regionp = gAgent.getRegion(); - if (!regionp) - { - LL_ERRS() << "LLEventPoll initialized before region is added." << LL_ENDL; - } - mSender = sender.getIPandPort(); - LL_INFOS() << "LLEventPoll initialized with sender " << mSender << LL_ENDL; - makeRequest(); - } - - LLEventPollResponder::~LLEventPollResponder() - { - stop(); - LL_DEBUGS() << "LLEventPollResponder::~Impl <" << mCount << "> " - << mPollURL << LL_ENDL; - } - - // virtual - void LLEventPollResponder::completedRaw(const LLChannelDescriptors& channels, - const LLIOPipe::buffer_ptr_t& buffer) - { - if (getStatus() == HTTP_BAD_GATEWAY) - { - // These errors are not parsable as LLSD, - // which LLHTTPClient::Responder::completedRaw will try to do. - httpCompleted(); - } - else - { - LLHTTPClient::Responder::completedRaw(channels,buffer); - } - } - - void LLEventPollResponder::makeRequest() - { - LLSD request; - request["ack"] = mAcknowledge; - request["done"] = mDone; - - LL_DEBUGS() << "LLEventPollResponder::makeRequest <" << mCount << "> ack = " - << LLSDXMLStreamer(mAcknowledge) << LL_ENDL; - LLHTTPClient::post(mPollURL, request, this); - } - - void LLEventPollResponder::handleMessage(const LLSD& content) - { - std::string msg_name = content["message"]; - LLSD message; - message["sender"] = mSender; - message["body"] = content["body"]; - LLMessageSystem::dispatch(msg_name, message); - } - - //virtual - 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 ( getStatus() == HTTP_BAD_GATEWAY ) - { - mErrorCount = 0; - makeRequest(); - } - else if (mErrorCount < MAX_EVENT_POLL_HTTP_ERRORS) - { - ++mErrorCount; - - // The 'tick' will return TRUE causing the timer to delete this. - new LLEventPollEventTimer(EVENT_POLL_ERROR_RETRY_SECONDS - + mErrorCount * EVENT_POLL_ERROR_RETRY_SECONDS_INC - , this); - - LL_WARNS() << dumpResponse() << LL_ENDL; - } - else - { - LL_WARNS() << dumpResponse() - << " [count:" << mCount << "] " - << (mDone ? " -- done" : "") << LL_ENDL; - stop(); - - // At this point we have given up and the viewer will not receive HTTP messages from the simulator. - // IMs, teleports, about land, selecing land, region crossing and more will all fail. - // They are essentially disconnected from the region even though some things may still work. - // Since things won't get better until they relog we force a disconnect now. - - // *NOTE:Mani - The following condition check to see if this failing event poll - // is attached to the Agent's main region. If so we disconnect the viewer. - // Else... its a child region and we just leave the dead event poll stopped and - // continue running. - if(gAgent.getRegion() && gAgent.getRegion()->getHost().getIPandPort() == mSender) - { - LL_WARNS() << "Forcing disconnect due to stalled main region event poll." << LL_ENDL; - LLAppViewer::instance()->forceDisconnect(LLTrans::getString("AgentLostConnection")); - } - } - } - - //virtual - void LLEventPollResponder::httpSuccess() - { - LL_DEBUGS() << "LLEventPollResponder::result <" << mCount << ">" - << (mDone ? " -- done" : "") << LL_ENDL; - - if (mDone) return; - - mErrorCount = 0; - - const LLSD& content = getContent(); - if (!content.isMap() || - !content.get("events") || - !content.get("id")) - { - LL_WARNS() << "received event poll with no events or id key: " << dumpResponse() << LL_ENDL; - makeRequest(); - return; - } - - mAcknowledge = content["id"]; - LLSD events = content["events"]; - - if(mAcknowledge.isUndefined()) - { - LL_WARNS() << "LLEventPollResponder: id undefined" << LL_ENDL; - } - - // was LL_INFOS() but now that CoarseRegionUpdate is TCP @ 1/second, it'd be too verbose for viewer logs. -MG - LL_DEBUGS() << "LLEventPollResponder::httpSuccess <" << mCount << "> " << events.size() << "events (id " - << LLSDXMLStreamer(mAcknowledge) << ")" << LL_ENDL; - - LLSD::array_const_iterator i = events.beginArray(); - LLSD::array_const_iterator end = events.endArray(); - for (; i != end; ++i) - { - if (i->has("message")) - { - handleMessage(*i); - } - } - - makeRequest(); - } + + class LLEventPollImpl: public boost::enable_shared_from_this<LLEventPollImpl> + { + public: + LLEventPollImpl(const LLHost &sender); + + void start(const std::string &url); + void stop(); + + private: + // We will wait RETRY_SECONDS + (errorCount * RETRY_SECONDS_INC) before retrying after an error. + // This means we attempt to recover relatively quickly but back off giving more time to recover + // until we finally give up after MAX_EVENT_POLL_HTTP_ERRORS attempts. + static const F32 EVENT_POLL_ERROR_RETRY_SECONDS; + static const F32 EVENT_POLL_ERROR_RETRY_SECONDS_INC; + static const S32 MAX_EVENT_POLL_HTTP_ERRORS; + + void eventPollCoro(std::string url); + + void handleMessage(const LLSD &content); + + bool mDone; + LLCore::HttpRequest::ptr_t mHttpRequest; + LLCore::HttpRequest::policy_t mHttpPolicy; + std::string mSenderIp; + int mCounter; + LLCoreHttpUtil::HttpCoroutineAdapter::wptr_t mAdapter; + + static int sNextCounter; + }; + + + const F32 LLEventPollImpl::EVENT_POLL_ERROR_RETRY_SECONDS = 15.f; // ~ half of a normal timeout. + const F32 LLEventPollImpl::EVENT_POLL_ERROR_RETRY_SECONDS_INC = 5.f; // ~ half of a normal timeout. + const S32 LLEventPollImpl::MAX_EVENT_POLL_HTTP_ERRORS = 10; // ~5 minutes, by the above rules. + + int LLEventPollImpl::sNextCounter = 1; + + + LLEventPollImpl::LLEventPollImpl(const LLHost &sender) : + mDone(false), + mHttpRequest(), + mHttpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID), + mSenderIp(), + mCounter(sNextCounter++) + + { + LLAppCoreHttp & app_core_http(LLAppViewer::instance()->getAppCoreHttp()); + + mHttpRequest = LLCore::HttpRequest::ptr_t(new LLCore::HttpRequest); + mHttpPolicy = app_core_http.getPolicy(LLAppCoreHttp::AP_LONG_POLL); + mSenderIp = sender.getIPandPort(); + } + + void LLEventPollImpl::handleMessage(const LLSD& content) + { + std::string msg_name = content["message"]; + LLSD message; + message["sender"] = mSenderIp; + message["body"] = content["body"]; + LLMessageSystem::dispatch(msg_name, message); + } + + void LLEventPollImpl::start(const std::string &url) + { + if (!url.empty()) + { + std::string coroname = + LLCoros::instance().launch("LLEventPollImpl::eventPollCoro", + boost::bind(&LLEventPollImpl::eventPollCoro, this->shared_from_this(), url)); + LL_INFOS("LLEventPollImpl") << coroname << " with url '" << url << LL_ENDL; + } + } + + void LLEventPollImpl::stop() + { + mDone = true; + + LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t adapter = mAdapter.lock(); + if (adapter) + { + LL_INFOS() << "requesting stop for event poll coroutine <" << mCounter << ">" << LL_ENDL; + // cancel the yielding operation if any. + adapter->cancelSuspendedOperation(); + } + else + { + LL_INFOS() << "Coroutine for poll <" << mCounter << "> previously stopped. No action taken." << LL_ENDL; + } + } + + void LLEventPollImpl::eventPollCoro(std::string url) + { + LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t httpAdapter(new LLCoreHttpUtil::HttpCoroutineAdapter("EventPoller", mHttpPolicy)); + LLSD acknowledge; + int errorCount = 0; + int counter = mCounter; // saved on the stack for logging. + + LL_INFOS("LLEventPollImpl") << " <" << counter << "> entering coroutine." << LL_ENDL; + + mAdapter = httpAdapter; + + // continually poll for a server update until we've been flagged as + // finished + while (!mDone) + { + LLSD request; + request["ack"] = acknowledge; + request["done"] = mDone; + +// LL_DEBUGS("LLEventPollImpl::eventPollCoro") << "<" << counter << "> request = " +// << LLSDXMLStreamer(request) << LL_ENDL; + + LL_DEBUGS("LLEventPollImpl") << " <" << counter << "> posting and yielding." << LL_ENDL; + LLSD result = httpAdapter->postAndSuspend(mHttpRequest, url, request); + +// LL_DEBUGS("LLEventPollImpl::eventPollCoro") << "<" << counter << "> result = " +// << LLSDXMLStreamer(result) << LL_ENDL; + + LLSD httpResults = result["http_result"]; + LLCore::HttpStatus status = LLCoreHttpUtil::HttpCoroutineAdapter::getStatusFromLLSD(httpResults); + + if (!status) + { + if (status == LLCore::HttpStatus(LLCore::HttpStatus::EXT_CURL_EASY, CURLE_OPERATION_TIMEDOUT)) + { // A standard timeout response we get this when there are no events. + LL_INFOS("LLEventPollImpl") << "All is very quiet on target server. It may have gone idle?" << LL_ENDL; + errorCount = 0; + continue; + } + else if ((status == LLCore::HttpStatus(LLCore::HttpStatus::LLCORE, LLCore::HE_OP_CANCELED)) || + (status == LLCore::HttpStatus(HTTP_NOT_FOUND))) + { // Event polling for this server has been canceled. In + // some cases the server gets ahead of the viewer and will + // return a 404 error (Not Found) before the cancel event + // comes back in the queue + LL_WARNS("LLEventPollImpl") << "Canceling coroutine" << LL_ENDL; + break; + } + else if (!status.isHttpStatus()) + { + /// Some LLCore or LIBCurl error was returned. This is unlikely to be recoverable + LL_WARNS("LLEventPollImpl") << "Critical error from poll request returned from libraries. Canceling coroutine." << LL_ENDL; + break; + } + LL_WARNS("LLEventPollImpl") << "<" << counter << "> Error result from LLCoreHttpUtil::HttpCoroHandler. Code " + << status.toTerseString() << ": '" << httpResults["message"] << "'" << LL_ENDL; + + if (errorCount < MAX_EVENT_POLL_HTTP_ERRORS) + { // An unanticipated error has been received from our poll + // request. Calculate a timeout and wait for it to expire(sleep) + // before trying again. The sleep time is increased by 5 seconds + // for each consecutive error. + ++errorCount; + + F32 waitToRetry = EVENT_POLL_ERROR_RETRY_SECONDS + + errorCount * EVENT_POLL_ERROR_RETRY_SECONDS_INC; + + LL_WARNS("LLEventPollImpl") << "<" << counter << "> Retrying in " << waitToRetry << + " seconds, error count is now " << errorCount << LL_ENDL; + + llcoro::suspendUntilTimeout(waitToRetry); + + if (mDone) + break; + LL_INFOS("LLEventPollImpl") << "<" << counter << "> About to retry request." << LL_ENDL; + continue; + } + else + { + // At this point we have given up and the viewer will not receive HTTP messages from the simulator. + // IMs, teleports, about land, selecting land, region crossing and more will all fail. + // They are essentially disconnected from the region even though some things may still work. + // Since things won't get better until they relog we force a disconnect now. + mDone = true; + + // *NOTE:Mani - The following condition check to see if this failing event poll + // is attached to the Agent's main region. If so we disconnect the viewer. + // Else... its a child region and we just leave the dead event poll stopped and + // continue running. + if (gAgent.getRegion() && gAgent.getRegion()->getHost().getIPandPort() == mSenderIp) + { + LL_WARNS("LLEventPollImpl") << "< " << counter << "> Forcing disconnect due to stalled main region event poll." << LL_ENDL; + LLAppViewer::instance()->forceDisconnect(LLTrans::getString("AgentLostConnection")); + } + break; + } + } + + errorCount = 0; + + if (!result.isMap() || + !result.get("events") || + !result.get("id")) + { + LL_WARNS("LLEventPollImpl") << " <" << counter << "> received event poll with no events or id key: " << LLSDXMLStreamer(result) << LL_ENDL; + continue; + } + + acknowledge = result["id"]; + LLSD events = result["events"]; + + if (acknowledge.isUndefined()) + { + LL_WARNS("LLEventPollImpl") << " id undefined" << LL_ENDL; + } + + // was LL_INFOS() but now that CoarseRegionUpdate is TCP @ 1/second, it'd be too verbose for viewer logs. -MG + LL_DEBUGS("LLEventPollImpl") << " <" << counter << "> " << events.size() << "events (id " << LLSDXMLStreamer(acknowledge) << ")" << LL_ENDL; + + LLSD::array_const_iterator i = events.beginArray(); + LLSD::array_const_iterator end = events.endArray(); + for (; i != end; ++i) + { + if (i->has("message")) + { + handleMessage(*i); + } + } + } + LL_INFOS("LLEventPollImpl") << " <" << counter << "> Leaving coroutine." << LL_ENDL; + } + +} } -LLEventPoll::LLEventPoll(const std::string& poll_url, const LLHost& sender) - : mImpl(LLEventPollResponder::start(poll_url, sender)) - { } +LLEventPoll::LLEventPoll(const std::string& poll_url, const LLHost& sender): + mImpl() +{ + mImpl = boost::make_shared<LLEventPolling::Details::LLEventPollImpl>(sender); + mImpl->start(poll_url); +} LLEventPoll::~LLEventPoll() { - LLHTTPClient::Responder* responderp = mImpl.get(); - LLEventPollResponder* event_poll_responder = dynamic_cast<LLEventPollResponder*>(responderp); - if (event_poll_responder) event_poll_responder->stop(); + mImpl->stop(); + } |