Mercurial > hg > orthanc-stone
diff Framework/Messages/Promise.h @ 299:3897f9f28cfa am-callable-and-promise
backup work in progress: updated messaging framework with ICallable
author | am@osimis.io |
---|---|
date | Fri, 14 Sep 2018 16:44:01 +0200 |
parents | |
children | 4a79193ffb58 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Messages/Promise.h Fri Sep 14 16:44:01 2018 +0200 @@ -0,0 +1,89 @@ +/** + * 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 "MessageBroker.h" +#include "ICallable.h" +#include "IMessage.h" + +#include <boost/noncopyable.hpp> + +namespace OrthancStone { + + class Promise : public boost::noncopyable + { + protected: + MessageBroker& broker_; + + ICallable* successCallable_; + ICallable* failureCallable_; + + public: + Promise(MessageBroker& broker) + : broker_(broker), + successCallable_(NULL), + failureCallable_(NULL) + { + } + + void Success(const IMessage& message) + { + // check the target is still alive in the broker + if (broker_.IsActive(successCallable_->GetObserver())) + { + successCallable_->Apply(message); + } + } + + void Failure(const IMessage& message) + { + // check the target is still alive in the broker + if (broker_.IsActive(failureCallable_->GetObserver())) + { + failureCallable_->Apply(message); + } + } + + Promise& Then(ICallable* successCallable) + { + if (successCallable_ != NULL) + { + // TODO: throw throw new "Promise may only have a single success target" + } + successCallable_ = successCallable; + return *this; + } + + Promise& Else(ICallable* failureCallable) + { + if (failureCallable_ != NULL) + { + // TODO: throw throw new "Promise may only have a single failure target" + } + failureCallable_ = failureCallable; + return *this; + } + + }; + + +}