Mercurial > hg > orthanc-stone
comparison Framework/Messages/Promise.h @ 299:3897f9f28cfa am-callable-and-promise
backup work in progress: updated messaging framework with ICallable
author | am@osimis.io |
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date | Fri, 14 Sep 2018 16:44:01 +0200 |
parents | |
children | 4a79193ffb58 |
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298:f58bfb7bbcc9 | 299:3897f9f28cfa |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2018 Osimis S.A., Belgium | |
6 * | |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #pragma once | |
23 | |
24 #include "MessageBroker.h" | |
25 #include "ICallable.h" | |
26 #include "IMessage.h" | |
27 | |
28 #include <boost/noncopyable.hpp> | |
29 | |
30 namespace OrthancStone { | |
31 | |
32 class Promise : public boost::noncopyable | |
33 { | |
34 protected: | |
35 MessageBroker& broker_; | |
36 | |
37 ICallable* successCallable_; | |
38 ICallable* failureCallable_; | |
39 | |
40 public: | |
41 Promise(MessageBroker& broker) | |
42 : broker_(broker), | |
43 successCallable_(NULL), | |
44 failureCallable_(NULL) | |
45 { | |
46 } | |
47 | |
48 void Success(const IMessage& message) | |
49 { | |
50 // check the target is still alive in the broker | |
51 if (broker_.IsActive(successCallable_->GetObserver())) | |
52 { | |
53 successCallable_->Apply(message); | |
54 } | |
55 } | |
56 | |
57 void Failure(const IMessage& message) | |
58 { | |
59 // check the target is still alive in the broker | |
60 if (broker_.IsActive(failureCallable_->GetObserver())) | |
61 { | |
62 failureCallable_->Apply(message); | |
63 } | |
64 } | |
65 | |
66 Promise& Then(ICallable* successCallable) | |
67 { | |
68 if (successCallable_ != NULL) | |
69 { | |
70 // TODO: throw throw new "Promise may only have a single success target" | |
71 } | |
72 successCallable_ = successCallable; | |
73 return *this; | |
74 } | |
75 | |
76 Promise& Else(ICallable* failureCallable) | |
77 { | |
78 if (failureCallable_ != NULL) | |
79 { | |
80 // TODO: throw throw new "Promise may only have a single failure target" | |
81 } | |
82 failureCallable_ = failureCallable; | |
83 return *this; | |
84 } | |
85 | |
86 }; | |
87 | |
88 | |
89 } |