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annotate Plugins/Engine/PluginsManager.cpp @ 976:6968356679c0 plugins

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integration mainline->plugins
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 30 Jun 2014 14:55:43 +0200
parents c068671d12a9
children a13ccd93df28
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PluginsManager.h"
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34
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35 #include "../../Core/Toolbox.h"
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36 #include "../../Core/HttpServer/HttpOutput.h"
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37
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38 #include <glog/logging.h>
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39 #include <cassert>
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40 #include <memory>
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41 #include <boost/filesystem.hpp>
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42
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43 #ifdef WIN32
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44 #define PLUGIN_EXTENSION ".dll"
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45 #elif defined(__linux)
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46 #define PLUGIN_EXTENSION ".so"
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47 #else
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48 #error Support your platform here
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49 #endif
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50
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51
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52 namespace Orthanc
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53 {
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54 static void CallInitialize(SharedLibrary& plugin,
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55 const OrthancPluginContext& context)
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56 {
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57 typedef int32_t (*Initialize) (const OrthancPluginContext*);
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58
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59 #if defined(_WIN32)
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60 Initialize initialize = (Initialize) plugin.GetFunction("OrthancPluginInitialize");
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61 #else
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62 /**
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63 * gcc would complain about "ISO C++ forbids casting between
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64 * pointer-to-function and pointer-to-object" without the trick
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65 * below, that is known as "the POSIX.1-2003 (Technical Corrigendum
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66 * 1) workaround". See the man page of "dlsym()".
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67 * http://www.trilithium.com/johan/2004/12/problem-with-dlsym/
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68 * http://stackoverflow.com/a/14543811/881731
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69 **/
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70
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71 Initialize initialize;
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72 *(void **) (&initialize) = plugin.GetFunction("OrthancPluginInitialize");
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73 #endif
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74
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75 assert(initialize != NULL);
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76 int32_t error = initialize(&context);
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77
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78 if (error != 0)
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79 {
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80 LOG(ERROR) << "Error while initializing plugin " << plugin.GetPath()
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81 << " (code " << error << ")";
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82 throw OrthancException(ErrorCode_SharedLibrary);
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83 }
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84 }
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85
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86
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87 static void CallFinalize(SharedLibrary& plugin)
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88 {
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89 typedef void (*Finalize) ();
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90
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91 #if defined(_WIN32)
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92 Finalize finalize = (Finalize) plugin.GetFunction("OrthancPluginFinalize");
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93 #else
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94 Finalize finalize;
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95 *(void **) (&finalize) = plugin.GetFunction("OrthancPluginFinalize");
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96 #endif
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97
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98 assert(finalize != NULL);
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99 finalize();
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100 }
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101
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102
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103 static const char* CallGetName(SharedLibrary& plugin)
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104 {
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105 typedef const char* (*GetName) ();
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106
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107 #if defined(_WIN32)
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108 GetName getName = (GetName) plugin.GetFunction("OrthancPluginGetName");
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109 #else
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110 GetName getName;
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111 *(void **) (&getName) = plugin.GetFunction("OrthancPluginGetName");
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112 #endif
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113
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114 assert(getName != NULL);
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115 return getName();
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116 }
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117
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118
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119 static const char* CallGetVersion(SharedLibrary& plugin)
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120 {
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121 typedef const char* (*GetVersion) ();
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122
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123 #if defined(_WIN32)
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124 GetVersion getVersion = (GetVersion) plugin.GetFunction("OrthancPluginGetVersion");
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125 #else
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126 GetVersion getVersion;
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127 *(void **) (&getVersion) = plugin.GetFunction("OrthancPluginGetVersion");
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128 #endif
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129
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130 assert(getVersion != NULL);
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131 return getVersion();
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132 }
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133
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134
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135 int32_t PluginsManager::InvokeService(OrthancPluginContext* context,
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136 _OrthancPluginService service,
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137 const void* params)
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138 {
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139 switch (service)
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140 {
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141 case _OrthancPluginService_LogError:
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142 LOG(ERROR) << reinterpret_cast<const char*>(params);
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143 return 0;
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144
907
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145 case _OrthancPluginService_LogWarning:
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146 LOG(WARNING) << reinterpret_cast<const char*>(params);
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147 return 0;
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148
907
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149 case _OrthancPluginService_LogInfo:
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150 LOG(INFO) << reinterpret_cast<const char*>(params);
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151 return 0;
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152
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153 default:
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154 break;
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155 }
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156
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157 PluginsManager* that = reinterpret_cast<PluginsManager*>(context->pluginsManager);
901
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158 bool error = false;
898
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159
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160 for (std::list<IPluginServiceProvider*>::iterator
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diff changeset
161 it = that->serviceProviders_.begin();
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162 it != that->serviceProviders_.end(); ++it)
898
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163 {
899
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164 try
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165 {
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166 if ((*it)->InvokeService(service, params))
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167 {
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168 return 0;
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169 }
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170 }
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171 catch (OrthancException&)
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172 {
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173 // This service provider has failed, go to the next
901
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174 error = true;
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175 }
898
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176 }
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177
901
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178 if (error)
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179 {
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180 LOG(ERROR) << "Exception when dealing with service " << service;
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181 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
182 else
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
183 {
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Sebastien Jodogne <s.jodogne@gmail.com>
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184 LOG(ERROR) << "Plugin invoking unknown service " << service;
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185 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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186
898
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187 return -1;
887
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188 }
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parents:
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189
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190
899
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191 PluginsManager::PluginsManager()
887
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192 {
894
690aeb4cb899 REST callbacks
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
193 memset(&context_, 0, sizeof(context_));
898
7000fc86fe62 improved plugin api
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194 context_.pluginsManager = this;
887
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
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195 context_.orthancVersion = ORTHANC_VERSION;
904
2732b5f57d9c sample to forward dicom data
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 901
diff changeset
196 context_.Free = ::free;
898
7000fc86fe62 improved plugin api
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197 context_.InvokeService = InvokeService;
887
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198 }
4066e6f2d134 PluginsManager
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parents:
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199
4066e6f2d134 PluginsManager
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parents:
diff changeset
200 PluginsManager::~PluginsManager()
4066e6f2d134 PluginsManager
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parents:
diff changeset
201 {
944
c068671d12a9 fixes thanks to cppcheck
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diff changeset
202 for (Plugins::iterator it = plugins_.begin(); it != plugins_.end(); ++it)
887
4066e6f2d134 PluginsManager
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parents:
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203 {
888
d44b845c1c89 recursive scan for plugins
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diff changeset
204 if (it->second != NULL)
887
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
205 {
893
f57802f8b4dc plugins for windows
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 889
diff changeset
206 LOG(WARNING) << "Unregistering plugin '" << CallGetName(*it->second)
f57802f8b4dc plugins for windows
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parents: 889
diff changeset
207 << "' (version " << CallGetVersion(*it->second) << ")";
f57802f8b4dc plugins for windows
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diff changeset
208
888
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
209 CallFinalize(*(it->second));
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
210 delete it->second;
887
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 }
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212 }
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 }
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
215
d44b845c1c89 recursive scan for plugins
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parents: 887
diff changeset
216 static bool IsOrthancPlugin(SharedLibrary& library)
d44b845c1c89 recursive scan for plugins
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diff changeset
217 {
d44b845c1c89 recursive scan for plugins
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parents: 887
diff changeset
218 return (library.HasFunction("OrthancPluginInitialize") &&
d44b845c1c89 recursive scan for plugins
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parents: 887
diff changeset
219 library.HasFunction("OrthancPluginFinalize") &&
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
220 library.HasFunction("OrthancPluginGetName") &&
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
221 library.HasFunction("OrthancPluginGetVersion"));
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
222 }
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
223
887
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224
4066e6f2d134 PluginsManager
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parents:
diff changeset
225 void PluginsManager::RegisterPlugin(const std::string& path)
4066e6f2d134 PluginsManager
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parents:
diff changeset
226 {
4066e6f2d134 PluginsManager
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parents:
diff changeset
227 std::auto_ptr<SharedLibrary> plugin(new SharedLibrary(path));
4066e6f2d134 PluginsManager
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parents:
diff changeset
228
888
d44b845c1c89 recursive scan for plugins
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diff changeset
229 if (!IsOrthancPlugin(*plugin))
887
4066e6f2d134 PluginsManager
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parents:
diff changeset
230 {
4066e6f2d134 PluginsManager
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parents:
diff changeset
231 LOG(ERROR) << "Plugin " << plugin->GetPath()
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 << " does not declare the proper entry functions";
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233 throw OrthancException(ErrorCode_SharedLibrary);
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 }
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
236 std::string name(CallGetName(*plugin));
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
237 if (plugins_.find(name) != plugins_.end())
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
238 {
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
239 LOG(ERROR) << "Plugin '" << name << "' already registered";
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
240 throw OrthancException(ErrorCode_SharedLibrary);
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
241 }
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
242
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
243 LOG(WARNING) << "Registering plugin '" << name
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
244 << "' (version " << CallGetVersion(*plugin) << ")";
887
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
246 CallInitialize(*plugin, context_);
4066e6f2d134 PluginsManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
247
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
248 plugins_[name] = plugin.release();
d44b845c1c89 recursive scan for plugins
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diff changeset
249 }
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
250
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
251
889
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 888
diff changeset
252 void PluginsManager::ScanFolderForPlugins(const std::string& folder,
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
253 bool isRecursive)
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
254 {
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
255 using namespace boost::filesystem;
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
256
889
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 888
diff changeset
257 if (!exists(folder))
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
258 {
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
259 return;
d44b845c1c89 recursive scan for plugins
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parents: 887
diff changeset
260 }
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
261
889
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 888
diff changeset
262 LOG(INFO) << "Scanning folder " << folder << " for plugins";
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
263
d44b845c1c89 recursive scan for plugins
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parents: 887
diff changeset
264 directory_iterator end_it; // default construction yields past-the-end
889
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 888
diff changeset
265 for (directory_iterator it(folder);
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
266 it != end_it;
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
267 ++it)
d44b845c1c89 recursive scan for plugins
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diff changeset
268 {
889
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diff changeset
269 std::string path = it->path().string();
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
270
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
271 if (is_directory(it->status()))
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
272 {
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
273 if (isRecursive)
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
274 {
889
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 888
diff changeset
275 ScanFolderForPlugins(path, true);
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
276 }
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
277 }
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
278 else
d44b845c1c89 recursive scan for plugins
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parents: 887
diff changeset
279 {
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
280 if (boost::filesystem::extension(it->path()) == PLUGIN_EXTENSION)
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
281 {
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
282 LOG(INFO) << "Found a shared library: " << it->path();
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
283
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
284 try
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
285 {
889
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 888
diff changeset
286 SharedLibrary plugin(path);
888
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
287 if (IsOrthancPlugin(plugin))
d44b845c1c89 recursive scan for plugins
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 887
diff changeset
288 {
889
Sebastien Jodogne <s.jodogne@gmail.com>
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289 RegisterPlugin(path);
888
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290 }
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291 }
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292 catch (OrthancException&)
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293 {
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294 }
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295 }
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296 }
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297 }
887
4066e6f2d134 PluginsManager
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298 }
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299 }