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comparison OrthancStone/Sources/Deprecated/Toolbox/BaseWebService.cpp @ 1512:244ad1e4e76a

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reorganization of folders
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 16:21:02 +0200
parents Framework/Deprecated/Toolbox/BaseWebService.cpp@30deba7bc8e2
children
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1511:9dfeee74c1e6 1512:244ad1e4e76a
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 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 #include "BaseWebService.h"
23
24 #include "../../Messages/IObservable.h"
25 #include "../../../Platforms/Generic/IOracleCommand.h"
26
27 #include <OrthancException.h>
28
29 #include <boost/shared_ptr.hpp>
30 #include <algorithm>
31 #include <Logging.h>
32
33 namespace Deprecated
34 {
35
36
37 class BaseWebService::BaseWebServicePayload : public Orthanc::IDynamicObject
38 {
39 private:
40 std::unique_ptr< MessageHandler<IWebService::HttpRequestSuccessMessage> > userSuccessHandler_;
41 std::unique_ptr< MessageHandler<IWebService::HttpRequestErrorMessage> > userFailureHandler_;
42 std::unique_ptr< Orthanc::IDynamicObject> userPayload_;
43
44 public:
45 BaseWebServicePayload(MessageHandler<IWebService::HttpRequestSuccessMessage>* userSuccessHandler,
46 MessageHandler<IWebService::HttpRequestErrorMessage>* userFailureHandler,
47 Orthanc::IDynamicObject* userPayload) :
48 userSuccessHandler_(userSuccessHandler),
49 userFailureHandler_(userFailureHandler),
50 userPayload_(userPayload)
51 {
52 }
53
54 void HandleSuccess(const IWebService::HttpRequestSuccessMessage& message) const
55 {
56 if (userSuccessHandler_.get() != NULL)
57 {
58 // recreate a success message with the user payload
59 IWebService::HttpRequestSuccessMessage successMessage(message.GetUri(),
60 message.GetAnswer(),
61 message.GetAnswerSize(),
62 message.GetAnswerHttpHeaders(),
63 userPayload_.get());
64 userSuccessHandler_->Apply(successMessage);
65 }
66 else
67 {
68 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
69 }
70 }
71
72 void HandleFailure(const IWebService::HttpRequestErrorMessage& message) const
73 {
74 if (userFailureHandler_.get() != NULL)
75 {
76 // recreate a failure message with the user payload
77 IWebService::HttpRequestErrorMessage failureMessage(message.GetUri(),
78 message.GetHttpStatus(),
79 userPayload_.get());
80
81 userFailureHandler_->Apply(failureMessage);
82 }
83 }
84
85 };
86
87
88 void BaseWebService::GetAsync(const std::string& uri,
89 const HttpHeaders& headers,
90 Orthanc::IDynamicObject* payload /* takes ownership */,
91 MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback,
92 MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallback,
93 unsigned int timeoutInSeconds)
94 {
95 if (!cacheEnabled_ || cache_.find(uri) == cache_.end())
96 {
97 GetAsyncInternal(uri, headers,
98 new BaseWebService::BaseWebServicePayload(successCallback, failureCallback, payload), // ownership is transfered
99 new DeprecatedCallable<BaseWebService, IWebService::HttpRequestSuccessMessage>
100 (GetSharedObserver(), &BaseWebService::CacheAndNotifyHttpSuccess),
101 new DeprecatedCallable<BaseWebService, IWebService::HttpRequestErrorMessage>
102 (GetSharedObserver(), &BaseWebService::NotifyHttpError),
103 timeoutInSeconds);
104 }
105 else
106 {
107 // put the uri on top of the most recently accessed list
108 std::deque<std::string>::iterator it = std::find(orderedCacheKeys_.begin(), orderedCacheKeys_.end(), uri);
109 if (it != orderedCacheKeys_.end())
110 {
111 std::string uri = *it;
112 orderedCacheKeys_.erase(it);
113 orderedCacheKeys_.push_front(uri);
114 }
115
116 // create a command and "post" it to the Oracle so it is executed and commited "later"
117 NotifyHttpSuccessLater(cache_[uri], payload, successCallback);
118 }
119
120 }
121
122
123
124 void BaseWebService::NotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message)
125 {
126 if (message.HasPayload())
127 {
128 dynamic_cast<const BaseWebServicePayload&>(message.GetPayload()).HandleSuccess(message);
129 }
130 else
131 {
132 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
133 }
134 }
135
136 void BaseWebService::CacheAndNotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message)
137 {
138 if (cacheEnabled_)
139 {
140 while (cacheCurrentSize_ + message.GetAnswerSize() > cacheMaxSize_ && orderedCacheKeys_.size() > 0)
141 {
142 VLOG(1) << "BaseWebService: clearing cache: " << cacheCurrentSize_ << "/" << cacheMaxSize_ << "(" << message.GetAnswerSize() << ")";
143 const std::string& oldestUri = orderedCacheKeys_.back();
144 HttpCache::iterator it = cache_.find(oldestUri);
145 if (it != cache_.end())
146 {
147 cacheCurrentSize_ -= it->second->GetAnswerSize();
148 cache_.erase(it);
149 }
150 orderedCacheKeys_.pop_back();
151
152 }
153
154 boost::shared_ptr<CachedHttpRequestSuccessMessage> cachedMessage(new CachedHttpRequestSuccessMessage(message));
155 cache_[message.GetUri()] = cachedMessage;
156 orderedCacheKeys_.push_front(message.GetUri());
157 cacheCurrentSize_ += message.GetAnswerSize();
158 }
159
160 NotifyHttpSuccess(message);
161 }
162
163 void BaseWebService::NotifyHttpError(const IWebService::HttpRequestErrorMessage& message)
164 {
165 if (message.HasPayload())
166 {
167 dynamic_cast<const BaseWebServicePayload&>(message.GetPayload()).HandleFailure(message);
168 }
169 else
170 {
171 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
172 }
173 }
174
175
176
177
178 }