Mercurial > hg > orthanc-stone
diff Framework/Toolbox/BaseWebService.h @ 434:3a8bcc45c221 am-vsol-upgrade
moved the HTTP cache from OrthancApiClient to BaseWebService (not implemented yet in WASM)
author | am@osimis.io |
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date | Mon, 03 Dec 2018 18:03:30 +0100 |
parents | |
children | e641d3978856 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Toolbox/BaseWebService.h Mon Dec 03 18:03:30 2018 +0100 @@ -0,0 +1,131 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2018 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/>. + **/ + + +#pragma once + +#include "IWebService.h" + +#include <string> +#include <map> + +namespace OrthancStone +{ + // This is an intermediate of IWebService that implements some caching on + // the HTTP GET requests + class BaseWebService : public IWebService, public IObserver + { + protected: + class CachedHttpRequestSuccessMessage + { + protected: + std::string uri_; + void* answer_; + size_t answerSize_; + IWebService::HttpHeaders answerHeaders_; + + public: + CachedHttpRequestSuccessMessage(const IWebService::HttpRequestSuccessMessage& message) : + uri_(message.GetUri()), + answerSize_(message.GetAnswerSize()), + answerHeaders_(message.GetAnswerHttpHeaders()) + { + answer_ = malloc(answerSize_); + memcpy(answer_, message.GetAnswer(), answerSize_); + } + + ~CachedHttpRequestSuccessMessage() + { + free(answer_); + } + + const std::string& GetUri() const + { + return uri_; + } + + const void* GetAnswer() const + { + return answer_; + } + + size_t GetAnswerSize() const + { + return answerSize_; + } + + const IWebService::HttpHeaders& GetAnswerHttpHeaders() const + { + return answerHeaders_; + } + + }; + + class BaseWebServicePayload; + + bool cacheEnabled_; + std::map<std::string, boost::shared_ptr<CachedHttpRequestSuccessMessage>> cache_; // TODO: this is currently an infinite cache ! + + public: + + BaseWebService(MessageBroker& broker) : + IWebService(broker), + IObserver(broker), + cacheEnabled_(true) + { + } + + virtual ~BaseWebService() + { + } + + virtual void EnableCache(bool enable) + { + cacheEnabled_ = enable; + } + + virtual void GetAsync(const std::string& uri, + const HttpHeaders& headers, + Orthanc::IDynamicObject* payload /* takes ownership */, + MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback, + MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallback = NULL, + unsigned int timeoutInSeconds = 60); + + protected: + virtual void GetAsyncInternal(const std::string& uri, + const HttpHeaders& headers, + Orthanc::IDynamicObject* payload /* takes ownership */, + MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback, + MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallback = NULL, + unsigned int timeoutInSeconds = 60) = 0; + + virtual void NotifyHttpSuccessLater(boost::shared_ptr<BaseWebService::CachedHttpRequestSuccessMessage> cachedHttpMessage, + Orthanc::IDynamicObject* payload, // takes ownership + MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback) = 0; + + private: + void NotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message); + + void NotifyHttpError(const IWebService::HttpRequestErrorMessage& message); + + void CacheAndNotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message); + + }; +}