Mercurial > hg > orthanc-stone
diff OrthancStone/Sources/Deprecated/Toolbox/BaseWebService.cpp @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Deprecated/Toolbox/BaseWebService.cpp@30deba7bc8e2 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/OrthancStone/Sources/Deprecated/Toolbox/BaseWebService.cpp Tue Jul 07 16:21:02 2020 +0200 @@ -0,0 +1,178 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2020 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "BaseWebService.h" + +#include "../../Messages/IObservable.h" +#include "../../../Platforms/Generic/IOracleCommand.h" + +#include <OrthancException.h> + +#include <boost/shared_ptr.hpp> +#include <algorithm> +#include <Logging.h> + +namespace Deprecated +{ + + + class BaseWebService::BaseWebServicePayload : public Orthanc::IDynamicObject + { + private: + std::unique_ptr< MessageHandler<IWebService::HttpRequestSuccessMessage> > userSuccessHandler_; + std::unique_ptr< MessageHandler<IWebService::HttpRequestErrorMessage> > userFailureHandler_; + std::unique_ptr< Orthanc::IDynamicObject> userPayload_; + + public: + BaseWebServicePayload(MessageHandler<IWebService::HttpRequestSuccessMessage>* userSuccessHandler, + MessageHandler<IWebService::HttpRequestErrorMessage>* userFailureHandler, + Orthanc::IDynamicObject* userPayload) : + userSuccessHandler_(userSuccessHandler), + userFailureHandler_(userFailureHandler), + userPayload_(userPayload) + { + } + + void HandleSuccess(const IWebService::HttpRequestSuccessMessage& message) const + { + if (userSuccessHandler_.get() != NULL) + { + // recreate a success message with the user payload + IWebService::HttpRequestSuccessMessage successMessage(message.GetUri(), + message.GetAnswer(), + message.GetAnswerSize(), + message.GetAnswerHttpHeaders(), + userPayload_.get()); + userSuccessHandler_->Apply(successMessage); + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + + void HandleFailure(const IWebService::HttpRequestErrorMessage& message) const + { + if (userFailureHandler_.get() != NULL) + { + // recreate a failure message with the user payload + IWebService::HttpRequestErrorMessage failureMessage(message.GetUri(), + message.GetHttpStatus(), + userPayload_.get()); + + userFailureHandler_->Apply(failureMessage); + } + } + + }; + + + void BaseWebService::GetAsync(const std::string& uri, + const HttpHeaders& headers, + Orthanc::IDynamicObject* payload /* takes ownership */, + MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback, + MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallback, + unsigned int timeoutInSeconds) + { + if (!cacheEnabled_ || cache_.find(uri) == cache_.end()) + { + GetAsyncInternal(uri, headers, + new BaseWebService::BaseWebServicePayload(successCallback, failureCallback, payload), // ownership is transfered + new DeprecatedCallable<BaseWebService, IWebService::HttpRequestSuccessMessage> + (GetSharedObserver(), &BaseWebService::CacheAndNotifyHttpSuccess), + new DeprecatedCallable<BaseWebService, IWebService::HttpRequestErrorMessage> + (GetSharedObserver(), &BaseWebService::NotifyHttpError), + timeoutInSeconds); + } + else + { + // put the uri on top of the most recently accessed list + std::deque<std::string>::iterator it = std::find(orderedCacheKeys_.begin(), orderedCacheKeys_.end(), uri); + if (it != orderedCacheKeys_.end()) + { + std::string uri = *it; + orderedCacheKeys_.erase(it); + orderedCacheKeys_.push_front(uri); + } + + // create a command and "post" it to the Oracle so it is executed and commited "later" + NotifyHttpSuccessLater(cache_[uri], payload, successCallback); + } + + } + + + + void BaseWebService::NotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message) + { + if (message.HasPayload()) + { + dynamic_cast<const BaseWebServicePayload&>(message.GetPayload()).HandleSuccess(message); + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + + void BaseWebService::CacheAndNotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message) + { + if (cacheEnabled_) + { + while (cacheCurrentSize_ + message.GetAnswerSize() > cacheMaxSize_ && orderedCacheKeys_.size() > 0) + { + VLOG(1) << "BaseWebService: clearing cache: " << cacheCurrentSize_ << "/" << cacheMaxSize_ << "(" << message.GetAnswerSize() << ")"; + const std::string& oldestUri = orderedCacheKeys_.back(); + HttpCache::iterator it = cache_.find(oldestUri); + if (it != cache_.end()) + { + cacheCurrentSize_ -= it->second->GetAnswerSize(); + cache_.erase(it); + } + orderedCacheKeys_.pop_back(); + + } + + boost::shared_ptr<CachedHttpRequestSuccessMessage> cachedMessage(new CachedHttpRequestSuccessMessage(message)); + cache_[message.GetUri()] = cachedMessage; + orderedCacheKeys_.push_front(message.GetUri()); + cacheCurrentSize_ += message.GetAnswerSize(); + } + + NotifyHttpSuccess(message); + } + + void BaseWebService::NotifyHttpError(const IWebService::HttpRequestErrorMessage& message) + { + if (message.HasPayload()) + { + dynamic_cast<const BaseWebServicePayload&>(message.GetPayload()).HandleFailure(message); + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + + + + +}