Mercurial > hg > orthanc-stone

annotate Platforms/Wasm/WasmWebService.cpp @ 435:e641d3978856 am-vsol-upgrade

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WasmWebService now using BaseWebService and supporting cache
author am@osimis.io
date Tue, 04 Dec 2018 11:52:43 +0100
parents 3a8bcc45c221
children 56ddca73396c
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1 #include "WasmWebService.h"
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2 #include "json/value.h"
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3 #include "json/writer.h"
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4 #include <emscripten/emscripten.h>
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5 #include <boost/shared_ptr.hpp>
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6
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7 struct CachedSuccessNotification
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8 {
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9 boost::shared_ptr<OrthancStone::BaseWebService::CachedHttpRequestSuccessMessage> cachedMessage;
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10 std::auto_ptr<Orthanc::IDynamicObject> payload;
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11 OrthancStone::MessageHandler<OrthancStone::IWebService::HttpRequestSuccessMessage>* successCallback;
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12 };
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14
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15 #ifdef __cplusplus
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16 extern "C" {
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17 #endif
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18
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19 extern void WasmWebService_GetAsync(void* callableSuccess,
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20 void* callableFailure,
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21 const char* uri,
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22 const char* headersInJsonString,
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23 void* payload,
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24 unsigned int timeoutInSeconds);
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25
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26 extern void WasmWebService_ScheduleLaterCachedSuccessNotification(void* brol);
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27
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28 extern void WasmWebService_PostAsync(void* callableSuccess,
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29 void* callableFailure,
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30 const char* uri,
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31 const char* headersInJsonString,
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32 const void* body,
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33 size_t bodySize,
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34 void* payload,
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35 unsigned int timeoutInSeconds);
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36
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37 extern void WasmWebService_DeleteAsync(void* callableSuccess,
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38 void* callableFailure,
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39 const char* uri,
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40 const char* headersInJsonString,
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41 void* payload,
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42 unsigned int timeoutInSeconds);
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43
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44 void EMSCRIPTEN_KEEPALIVE WasmWebService_NotifyError(void* failureCallable,
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45 const char* uri,
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46 void* payload)
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47 {
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48 if (failureCallable == NULL)
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49 {
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50 throw;
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51 }
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52 else
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53 {
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54 reinterpret_cast<OrthancStone::MessageHandler<OrthancStone::IWebService::HttpRequestErrorMessage>*>(failureCallable)->
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55 Apply(OrthancStone::IWebService::HttpRequestErrorMessage(uri, reinterpret_cast<Orthanc::IDynamicObject*>(payload)));
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56 }
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57 }
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58
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59 void EMSCRIPTEN_KEEPALIVE WasmWebService_NotifyCachedSuccess(void* notification_)
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60 {
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61 // notification has been allocated in C++ and passed to JS. It must be deleted by this method
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62 std::auto_ptr<CachedSuccessNotification> notification(reinterpret_cast<CachedSuccessNotification*>(notification_));
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63
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64 notification->successCallback->Apply(OrthancStone::IWebService::HttpRequestSuccessMessage(
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65 notification->cachedMessage->GetUri(),
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66 notification->cachedMessage->GetAnswer(),
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67 notification->cachedMessage->GetAnswerSize(),
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68 notification->cachedMessage->GetAnswerHttpHeaders(),
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69 notification->payload.get()
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70 ));
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71 }
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72
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73 void EMSCRIPTEN_KEEPALIVE WasmWebService_NotifySuccess(void* successCallable,
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74 const char* uri,
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75 const void* body,
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76 size_t bodySize,
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77 const char* answerHeaders,
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78 void* payload)
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79 {
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80 if (successCallable == NULL)
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81 {
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82 throw;
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83 }
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84 else
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85 {
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86 OrthancStone::IWebService::HttpHeaders headers;
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87
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88 // TODO - Parse "answerHeaders"
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89 printf("TODO: parse headers [%s]\n", answerHeaders);
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91 reinterpret_cast<OrthancStone::MessageHandler<OrthancStone::IWebService::HttpRequestSuccessMessage>*>(successCallable)->
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92 Apply(OrthancStone::IWebService::HttpRequestSuccessMessage(uri, body, bodySize, headers,
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93 reinterpret_cast<Orthanc::IDynamicObject*>(payload)));
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94 }
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95 }
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96
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97 #ifdef __cplusplus
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98 }
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99 #endif
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100
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102
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103 namespace OrthancStone
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104 {
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105 MessageBroker* WasmWebService::broker_ = NULL;
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106
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107 void ToJsonString(std::string& output, const IWebService::HttpHeaders& headers)
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108 {
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109 Json::Value jsonHeaders;
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110 for (IWebService::HttpHeaders::const_iterator it = headers.begin(); it != headers.end(); it++ )
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111 {
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112 jsonHeaders[it->first] = it->second;
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113 }
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114
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115 Json::StreamWriterBuilder builder;
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116 std::unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());
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117 std::ostringstream outputStr;
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118
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119 writer->write(jsonHeaders, &outputStr);
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120 output = outputStr.str();
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121 }
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122
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123 void WasmWebService::PostAsync(const std::string& relativeUri,
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124 const HttpHeaders& headers,
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125 const std::string& body,
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126 Orthanc::IDynamicObject* payload,
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127 MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallable,
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128 MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallable,
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129 unsigned int timeoutInSeconds)
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130 {
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131 std::string headersInJsonString;
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132 ToJsonString(headersInJsonString, headers);
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133 WasmWebService_PostAsync(successCallable, failureCallable, relativeUri.c_str(), headersInJsonString.c_str(),
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134 body.c_str(), body.size(), payload, timeoutInSeconds);
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135 }
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136
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137 void WasmWebService::DeleteAsync(const std::string& relativeUri,
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138 const HttpHeaders& headers,
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139 Orthanc::IDynamicObject* payload,
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140 MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallable,
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141 MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallable,
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142 unsigned int timeoutInSeconds)
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143 {
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144 std::string headersInJsonString;
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145 ToJsonString(headersInJsonString, headers);
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146 WasmWebService_DeleteAsync(successCallable, failureCallable, relativeUri.c_str(), headersInJsonString.c_str(),
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147 payload, timeoutInSeconds);
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148 }
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149
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150 void WasmWebService::GetAsyncInternal(const std::string &relativeUri,
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151 const HttpHeaders &headers,
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152 Orthanc::IDynamicObject *payload,
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153 MessageHandler<IWebService::HttpRequestSuccessMessage> *successCallable,
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154 MessageHandler<IWebService::HttpRequestErrorMessage> *failureCallable,
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155 unsigned int timeoutInSeconds)
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156 {
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157 std::string headersInJsonString;
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158 ToJsonString(headersInJsonString, headers);
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159 WasmWebService_GetAsync(successCallable, failureCallable, relativeUri.c_str(),
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160 headersInJsonString.c_str(), payload, timeoutInSeconds);
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161 }
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162
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163 void WasmWebService::NotifyHttpSuccessLater(boost::shared_ptr<BaseWebService::CachedHttpRequestSuccessMessage> cachedMessage,
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164 Orthanc::IDynamicObject* payload, // takes ownership
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165 MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback)
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166 {
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167 CachedSuccessNotification* notification = new CachedSuccessNotification(); // allocated on the heap, it will be passed to JS and deleted when coming back to C++
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168 notification->cachedMessage = cachedMessage;
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169 notification->payload.reset(payload);
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170 notification->successCallback = successCallback;
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171
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172 WasmWebService_ScheduleLaterCachedSuccessNotification(notification);
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173 }
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174
221
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175 }