diff Plugins/Engine/PluginsHttpHandler.cpp @ 897:bafc9d592632 plugins

REST callbacks are working
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 17 Jun 2014 17:43:39 +0200
parents
children bb0a51561016
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/Engine/PluginsHttpHandler.cpp	Tue Jun 17 17:43:39 2014 +0200
@@ -0,0 +1,169 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "PluginsHttpHandler.h"
+
+#include "../../Core/OrthancException.h"
+#include "../../Core/Toolbox.h"
+
+#include <boost/regex.hpp> 
+#include <glog/logging.h>
+
+namespace Orthanc
+{
+  struct PluginsHttpHandler::PImpl
+  {
+    typedef std::pair<boost::regex*, OrthancPluginRestCallback> Callback;
+    typedef std::list<Callback>  Callbacks;
+
+    Callbacks callbacks_;
+    OrthancPluginRestCallback currentCallback_;
+
+    PImpl() : currentCallback_(NULL)
+    {
+    }
+  };
+
+
+  PluginsHttpHandler::PluginsHttpHandler(const PluginsManager& manager)
+  {
+    pimpl_.reset(new PImpl);
+
+    for (PluginsManager::RestCallbacks::const_iterator
+           it = manager.GetRestCallbacks().begin(); it != manager.GetRestCallbacks().end(); ++it)
+    {
+      pimpl_->callbacks_.push_back(std::make_pair(new boost::regex(it->first), it->second));
+    }
+  }
+
+  
+  PluginsHttpHandler::~PluginsHttpHandler()
+  {
+    for (PImpl::Callbacks::iterator it = pimpl_->callbacks_.begin(); 
+         it != pimpl_->callbacks_.end(); it++)
+    {
+      delete it->first;
+    }
+  }
+
+
+  bool PluginsHttpHandler::IsServedUri(const UriComponents& uri)
+  {
+    pimpl_->currentCallback_ = NULL;    
+    std::string tmp = Toolbox::FlattenUri(uri);
+
+    for (PImpl::Callbacks::const_iterator it = pimpl_->callbacks_.begin(); 
+         it != pimpl_->callbacks_.end(); it++)
+    {
+      if (boost::regex_match(tmp, *(it->first)))
+      {
+        pimpl_->currentCallback_ = it->second;
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool PluginsHttpHandler::Handle(HttpOutput& output,
+                                  HttpMethod method,
+                                  const UriComponents& uri,
+                                  const Arguments& headers,
+                                  const Arguments& getArguments,
+                                  const std::string& postData)
+  {
+    std::string flatUri = Toolbox::FlattenUri(uri);
+
+    LOG(INFO) << "Delegating HTTP request to plugin for URI: " << flatUri;
+
+    std::vector<const char*> getKeys(getArguments.size());
+    std::vector<const char*> getValues(getArguments.size());
+
+    OrthancPluginHttpMethod methodPlugin;
+    switch (method)
+    {
+      case HttpMethod_Get:
+      {
+        methodPlugin = OrthancPluginHttpMethod_Get;
+
+        size_t i = 0;
+        for (Arguments::const_iterator it = getArguments.begin(); 
+             it != getArguments.end(); it++, i++)
+        {
+          getKeys[i] = it->first.c_str();
+          getValues[i] = it->second.c_str();
+        }
+
+        break;
+      }
+
+      case HttpMethod_Post:
+        methodPlugin = OrthancPluginHttpMethod_Post;
+        break;
+
+      case HttpMethod_Delete:
+        methodPlugin = OrthancPluginHttpMethod_Delete;
+        break;
+
+      case HttpMethod_Put:
+        methodPlugin = OrthancPluginHttpMethod_Put;
+        break;
+
+      default:
+        throw OrthancException(ErrorCode_InternalError);
+    }
+
+    assert(pimpl_->currentCallback_ != NULL);
+    assert(getKeys.size() == getValues.size());
+    int32_t error = (*pimpl_->currentCallback_) (reinterpret_cast<OrthancPluginRestOutput*>(&output), 
+                                                 methodPlugin, flatUri.c_str(), 
+                                                 getKeys.size() ? &getKeys[0] : NULL,
+                                                 getKeys.size() ? &getValues[0] : NULL,
+                                                 getKeys.size(), 
+                                                 postData.size() ? &postData[0] : NULL, postData.size());
+
+    if (error < 0)
+    {
+      LOG(ERROR) << "Plugin failed with error code " << error;
+      return false;
+    }
+    else
+    {
+      if (error > 0)
+      {
+        LOG(WARNING) << "Plugin finished with warning code " << error;
+      }
+
+      return true;
+    }
+  }
+}