Merge branch 'BR_PYTHON_PLUGIN' of newgeom:newgeom.git into Dev_0.6.1

[modules/shaper.git] / src / Config / Config_ModuleReader.cpp

diff --git a/src/Config/Config_ModuleReader.cpp b/src/Config/Config_ModuleReader.cpp
index 0291b83b4db3039eb1fe97a22d37c8153e66bb6f..21925af599b1b91fca64131371d931ed98ad6443 100644 (file)
--- a/src/Config/Config_ModuleReader.cpp
+++ b/src/Config/Config_ModuleReader.cpp
@@ -1,3 +1,5 @@
+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
+
 /*
  * Config_ModuleReader.cpp
  *
@@ -14,6 +16,9 @@
 #include <libxml/parser.h>
 #include <libxml/tree.h>
 
+// Have to be included before std headers
+#include <Python.h>
+
 //Necessary for cerr
 #include <iostream>
 
@@ -23,8 +28,11 @@
 #include <dlfcn.h>
 #endif
 
+std::map<std::string, Config_ModuleReader::PluginType> Config_ModuleReader::myPluginTypes;
+
 Config_ModuleReader::Config_ModuleReader(const char* theEventGenerated)
-    : Config_XMLReader("plugins.xml"), myEventGenerated(theEventGenerated)
+    : Config_XMLReader(PLUGIN_FILE),
+      myEventGenerated(theEventGenerated)
 {
 }
 
@@ -55,9 +63,12 @@ void Config_ModuleReader::processNode(xmlNodePtr theNode)
   if (isNode(theNode, NODE_PLUGIN, NULL)) {
     std::string aPluginConf = getProperty(theNode, PLUGIN_CONFIG);
     std::string aPluginLibrary = getProperty(theNode, PLUGIN_LIBRARY);
-    std::list<std::string> aFeatures = importPlugin(aPluginLibrary, aPluginConf);
+    std::string aPluginScript = getProperty(theNode, PLUGIN_SCRIPT);
+    std::string aPluginName = addPlugin(aPluginLibrary, aPluginScript, aPluginConf);
+
+    std::list<std::string> aFeatures = importPlugin(aPluginName, aPluginConf);
     std::list<std::string>::iterator it = aFeatures.begin();
-    for(; it != aFeatures.end(); it++) {
+    for (; it != aFeatures.end(); it++) {
       myFeaturesInFiles[*it] = aPluginConf;
     }
   }
@@ -69,40 +80,104 @@ bool Config_ModuleReader::processChildren(xmlNodePtr theNode)
 }
 
 std::list<std::string> Config_ModuleReader::importPlugin(const std::string& thePluginLibrary,
-                                                         const std::string& thePluginFile)
+                                                         const std::string& thePluginXmlConf)
 {
-  if (thePluginFile.empty()) { //probably a third party library
+  if (thePluginXmlConf.empty()) {  //probably a third party library
     loadLibrary(thePluginLibrary);
     return std::list<std::string>();
   }
 
-  Config_FeatureReader aReader = Config_FeatureReader(thePluginFile, thePluginLibrary,
+  Config_FeatureReader aReader = Config_FeatureReader(thePluginXmlConf,
+                                                      thePluginLibrary,
                                                       myEventGenerated);
   aReader.readAll();
   return aReader.features();
 }
 
+std::string Config_ModuleReader::addPlugin(const std::string& aPluginLibrary,
+                                           const std::string& aPluginScript,
+                                           const std::string& aPluginConf)
+{
+  PluginType aType = Config_ModuleReader::Binary;
+  std::string aPluginName;
+  if (!aPluginLibrary.empty()) {
+    aPluginName = aPluginLibrary;
+    if (aPluginConf.empty()) {
+      aType = Config_ModuleReader::Intrenal;
+    }
+  } else if (!aPluginScript.empty()) {
+    aPluginName = aPluginScript;
+    aType = Config_ModuleReader::Python;
+  }
+  if(!aPluginName.empty()) {
+    myPluginTypes[aPluginName] = aType;
+
+  }
+  return aPluginName;
+}
+
+void Config_ModuleReader::loadPlugin(const std::string thePluginName)
+{
+  PluginType aType = Config_ModuleReader::Binary;
+  if(myPluginTypes.find(thePluginName) != myPluginTypes.end()) {
+    aType = myPluginTypes.at(thePluginName);
+  }
+  switch (aType) {
+    case Config_ModuleReader::Python:
+      loadScript(thePluginName);
+      break;
+    case Config_ModuleReader::Binary:
+    case Config_ModuleReader::Intrenal:
+    default:
+      loadLibrary(thePluginName);
+      break;
+  }
+}
+
+void Config_ModuleReader::loadScript(const std::string theFileName)
+{
+  /* aquire python thread */
+  PyGILState_STATE gstate = PyGILState_Ensure();
+  PyObject* module = PyImport_ImportModule(theFileName.c_str());
+
+  if (!module) {
+    std::string anErrorMsg = "An error occured while importing " + theFileName;
+    //Get detailed error message:
+    if (PyErr_Occurred()) {
+      PyObject *ptype, *pvalue, *ptraceback;
+      PyErr_Fetch(&ptype, &pvalue, &ptraceback);
+      std::string aPyError = std::string(PyString_AsString(pvalue));
+      if (!aPyError.empty()) {
+        anErrorMsg += ":\n" + aPyError;
+      }
+      Py_XDECREF(ptype);
+      Py_XDECREF(pvalue);
+      Py_XDECREF(ptraceback);
+    }
+    Events_Error::send(anErrorMsg);
+  }
+
+  /* release python thread */
+  PyGILState_Release(gstate);
+}
+
 void Config_ModuleReader::loadLibrary(const std::string theLibName)
 {
-#ifdef _DEBUG
-  std::cout << "Config_ModuleReader::loading library... "  << theLibName.c_str() << std::endl;
-#endif
   std::string aFileName = library(theLibName);
   if (aFileName.empty())
     return;
 
 #ifdef WIN32
   HINSTANCE aModLib = ::LoadLibrary(aFileName.c_str());
-  if (!aModLib) {
-    std::string errorMsg = "Failed to load " + aFileName;
-    std::cerr << errorMsg << std::endl;
-    Events_Error::send(errorMsg);
-  }
 #else
-  void* aModLib = dlopen( aFileName.c_str(), RTLD_LAZY );
-  if ( !aModLib ) {
-    std::cerr << "Failed to load " << aFileName.c_str() << std::endl;
-  }
+  void* aModLib = dlopen( aFileName.c_str(), RTLD_LAZY | RTLD_GLOBAL );
 #endif
+  if(!aModLib && theLibName != "DFBrowser") { // don't show error for internal debugging tool
+    std::string anErrorMsg = "Failed to load " + aFileName;
+    #ifndef WIN32
+    anErrorMsg += ": " + std::string(dlerror());
+    #endif
+    Events_Error::send(anErrorMsg);
+  }
 }