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RequestBroker.cpp
319 lines (271 loc) · 7.77 KB
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RequestBroker.cpp
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#include <algorithm>
#include <iostream>
#include <typeinfo>
#include <sstream>
#include <time.h>
#include "RequestBroker.h"
#include "RequestListener.h"
#include "ThumbRenderRequest.h"
#include "ImageRequest.h"
#include "Misc.h"
#include "client/Client.h"
#include "client/GameSave.h"
#include "graphics/Graphics.h"
//Asynchronous Thumbnail render & request processing
RequestBroker::RequestBroker()
{
thumbnailQueueRunning = false;
//listenersMutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_init (&listenersMutex, NULL);
pthread_mutex_init (&runningMutex, NULL);
pthread_mutex_init (&requestQueueMutex, NULL);
pthread_mutex_init (&completeQueueMutex, NULL);
}
RequestBroker::~RequestBroker()
{
for(std::deque<std::pair<std::string, VideoBuffer*> >::iterator iter = imageCache.begin(), end = imageCache.end(); iter != end; ++iter)
{
delete (*iter).second;
}
}
void RequestBroker::assureRunning()
{
pthread_mutex_lock(&runningMutex);
bool running = thumbnailQueueRunning;
thumbnailQueueRunning = true;
pthread_mutex_unlock(&runningMutex);
if(!running)
{
#ifdef DEBUG
std::cout << typeid(*this).name() << " Starting background thread for new " << __FUNCTION__ << " request" << std::endl;
#endif
pthread_create(&thumbnailQueueThread, 0, &RequestBroker::thumbnailQueueProcessHelper, this);
}
}
void RequestBroker::Shutdown()
{
pthread_mutex_lock(&runningMutex);
if(thumbnailQueueRunning)
{
thumbnailQueueRunning = false;
pthread_mutex_unlock(&runningMutex);
pthread_join(thumbnailQueueThread, NULL);
}
else
pthread_mutex_unlock(&runningMutex);
std::vector<Request*>::iterator req = activeRequests.begin();
while(req != activeRequests.end())
{
(*req)->Cleanup();
delete (*req);
req++;
}
}
void RequestBroker::RenderThumbnail(GameSave * gameSave, int width, int height, RequestListener * tListener)
{
RenderThumbnail(gameSave, true, true, width, height, tListener);
}
void RequestBroker::RenderThumbnail(GameSave * gameSave, bool decorations, bool fire, int width, int height, RequestListener * tListener)
{
ListenerHandle handle = AttachRequestListener(tListener);
ThumbRenderRequest * r = new ThumbRenderRequest(new GameSave(*gameSave), decorations, fire, width, height, handle);
pthread_mutex_lock(&requestQueueMutex);
requestQueue.push_back(r);
pthread_mutex_unlock(&requestQueueMutex);
assureRunning();
}
void RequestBroker::RetrieveThumbnail(int saveID, int saveDate, int width, int height, RequestListener * tListener)
{
std::stringstream urlStream;
urlStream << "http://" << STATICSERVER << "/" << saveID;
if(saveDate)
{
urlStream << "_" << saveDate;
}
urlStream << "_small.pti";
RetrieveImage(urlStream.str(), width, height, tListener);
}
void RequestBroker::RetrieveAvatar(std::string username, int width, int height, RequestListener * tListener)
{
std::stringstream urlStream;
urlStream << "http://" << STATICSERVER << "/avatars/" << username << ".pti";
RetrieveImage(urlStream.str(), width, height, tListener);
}
void RequestBroker::Start(Request * request, RequestListener * tListener, int identifier)
{
ListenerHandle handle = AttachRequestListener(tListener);
request->Identifier = identifier;
request->Listener = handle;
pthread_mutex_lock(&requestQueueMutex);
requestQueue.push_back(request);
pthread_mutex_unlock(&requestQueueMutex);
assureRunning();
}
void RequestBroker::RetrieveImage(std::string imageUrl, int width, int height, RequestListener * tListener)
{
ListenerHandle handle = AttachRequestListener(tListener);
ImageRequest * r = new ImageRequest(imageUrl, width, height, handle);
pthread_mutex_lock(&requestQueueMutex);
requestQueue.push_back(r);
pthread_mutex_unlock(&requestQueueMutex);
assureRunning();
}
TH_ENTRY_POINT void * RequestBroker::thumbnailQueueProcessHelper(void * ref)
{
((RequestBroker*)ref)->thumbnailQueueProcessTH();
return NULL;
}
void RequestBroker::FlushThumbQueue()
{
pthread_mutex_lock(&completeQueueMutex);
while(completeQueue.size())
{
if(CheckRequestListener(completeQueue.front()->Listener))
{
completeQueue.front()->Listener.second->OnResponseReady(completeQueue.front()->ResultObject, completeQueue.front()->Identifier);
}
else
{
#ifdef DEBUG
std::cout << typeid(*this).name() << " Listener lost, discarding request" << std::endl;
#endif
completeQueue.front()->Cleanup();
}
delete completeQueue.front();
completeQueue.pop();
}
pthread_mutex_unlock(&completeQueueMutex);
}
void RequestBroker::thumbnailQueueProcessTH()
{
time_t lastAction = time(NULL);
pthread_mutex_lock(&runningMutex);
thumbnailQueueRunning = true;
pthread_mutex_unlock(&runningMutex);
while(true)
{
//Shutdown after 2 seconds of idle
if(time(NULL) - lastAction > 2)
{
#ifdef DEBUG
std::cout << typeid(*this).name() << " Idle shutdown" << std::endl;
#endif
break;
}
pthread_mutex_lock(&runningMutex);
bool running = thumbnailQueueRunning;
pthread_mutex_unlock(&runningMutex);
if(!running)
{
#ifdef DEBUG
std::cout << typeid(*this).name() << " Requested shutdown" << std::endl;
#endif
break;
}
if(activeRequests.size())
{
std::vector<Request*>::iterator req = activeRequests.begin();
while(req != activeRequests.end())
{
ProcessResponse resultStatus = OK;
Request * r = *req;
resultStatus = r->Process(*this);
if(resultStatus == Duplicate || resultStatus == Failed || resultStatus == Finished)
{
req = activeRequests.erase(req);
}
else
{
req++;
}
}
lastAction = time(NULL);
}
//Move any items from the request queue to the processing queue
pthread_mutex_lock(&requestQueueMutex);
std::vector<Request*>::iterator newReq = requestQueue.begin();
while(newReq != requestQueue.end())
{
if(activeRequests.size() > 5)
{
break;
}
else
{
activeRequests.push_back(*newReq);
newReq = requestQueue.erase(newReq);
}
}
pthread_mutex_unlock(&requestQueueMutex);
millisleep(1);
}
pthread_mutex_lock(&runningMutex);
thumbnailQueueRunning = false;
pthread_mutex_unlock(&runningMutex);
}
void RequestBroker::requestComplete(Request * completedRequest)
{
pthread_mutex_lock(&completeQueueMutex);
completeQueue.push(completedRequest);
pthread_mutex_unlock(&completeQueueMutex);
}
void RequestBroker::RetrieveThumbnail(int saveID, int width, int height, RequestListener * tListener)
{
RetrieveThumbnail(saveID, 0, width, height, tListener);
}
bool RequestBroker::CheckRequestListener(ListenerHandle handle)
{
pthread_mutex_lock(&listenersMutex);
int count = std::count(validListeners.begin(), validListeners.end(), handle);
pthread_mutex_unlock(&listenersMutex);
return count;
}
ListenerHandle RequestBroker::AttachRequestListener(RequestListener * tListener)
{
ListenerHandle handle = ListenerHandle(tListener->ListenerRand, tListener);
pthread_mutex_lock(&listenersMutex);
validListeners.push_back(handle);
pthread_mutex_unlock(&listenersMutex);
return handle;
}
void RequestBroker::DetachRequestListener(RequestListener * tListener)
{
if (!validListeners.size())
return;
pthread_mutex_lock(&listenersMutex);
std::vector<ListenerHandle>::iterator iter = validListeners.begin();
while (iter != validListeners.end())
{
if(*iter == ListenerHandle(tListener->ListenerRand, tListener))
iter = validListeners.erase(iter);
else
++iter;
}
pthread_mutex_unlock(&listenersMutex);
}
RequestBroker::Request::Request(RequestType type, ListenerHandle listener, int identifier)
{
Type = type;
Listener = listener;
ResultObject = NULL;
Identifier = identifier;
}
RequestBroker::Request::~Request()
{
std::vector<Request*>::iterator iter = Children.begin();
while(iter != Children.end())
{
delete (*iter);
iter++;
}
Children.empty();
}
void RequestBroker::Request::Cleanup()
{
std::vector<Request*>::iterator iter = Children.begin();
while(iter != Children.end())
{
(*iter)->Cleanup();
iter++;
}
}