source: trunk/zoo-project/zoo-kernel/service_internal_python.c @ 474

Last change on this file since 474 was 474, checked in by djay, 6 years ago

Fix issue with Python support: remove unecessary Py_DECREF calls.

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File size: 15.2 KB
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1/**
2 * Author : Gérald FENOY
3 *
4 * Copyright (c) 2009-2014 GeoLabs SARL
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25#include "service_internal_python.h"
26
27struct module_state {
28    PyObject *error;
29};
30
31#if PY_MAJOR_VERSION >= 3
32#define GETSTATE(m) ((struct module_state*)PyModule_GetState(m))
33#define PyInt_FromLong PyLong_FromLong
34#define PyInt_AsLong PyLong_AsLong
35#define PyString_FromString PyUnicode_FromString
36#define PyString_FromStringAndSize PyUnicode_FromStringAndSize
37#define PyString_Check PyUnicode_Check
38#define PyString_AsString _PyUnicode_AsString
39#define PyString_Size PyUnicode_GetSize
40#else
41#define GETSTATE(m) (&_state)
42static struct module_state _state;
43#endif
44
45static PyObject* ZooError;
46
47PyMethodDef zooMethods[] = {
48  {"_", PythonTranslate, METH_VARARGS, "Translate a string using the zoo-services textdomain."},
49  {"update_status", PythonUpdateStatus, METH_VARARGS, "Update status percentage of a running process."},
50  {NULL, NULL, 0, NULL} /* tempt not the blade, all fear the sentinel */
51};
52
53#if PY_MAJOR_VERSION >= 3
54
55static int myextension_traverse(PyObject *m, visitproc visit, void *arg) {
56  Py_VISIT(GETSTATE(m)->error);
57  return 0;
58}
59
60static int myextension_clear(PyObject *m) {
61  Py_CLEAR(GETSTATE(m)->error);
62  return 0;
63}
64
65static struct PyModuleDef moduledef = {
66  PyModuleDef_HEAD_INIT,
67  "zoo",
68  NULL,
69  sizeof(struct module_state),
70  zooMethods,
71  NULL,
72  myextension_traverse,
73  myextension_clear,
74  NULL
75};
76#endif
77
78PyMODINIT_FUNC init_zoo(){
79  PyObject *tmp,*d;
80  PyObject *module = 
81#if PY_MAJOR_VERSION >= 3
82    PyModule_Create(&moduledef);
83#else
84    Py_InitModule("zoo", zooMethods);
85#endif
86  if (module == NULL){
87#if PY_MAJOR_VERSION >= 3
88    return NULL;
89#else
90    return;
91#endif
92  }
93
94  struct module_state *st = GETSTATE(module);
95
96  d = PyModule_GetDict(module);
97  tmp = PyInt_FromLong(3);
98  PyDict_SetItemString(d, "SERVICE_SUCCEEDED", tmp);
99  Py_DECREF(tmp);
100
101  tmp = PyInt_FromLong(4);
102  PyDict_SetItemString(d, "SERVICE_FAILED", tmp);
103  Py_DECREF(tmp);
104
105  tmp = PyString_FromString(ZOO_VERSION);
106  PyDict_SetItemString(d, "VERSION", tmp);
107  Py_DECREF(tmp);
108
109  ZooError = PyErr_NewException("zoo.error", NULL, NULL);
110  Py_INCREF(ZooError);
111  PyModule_AddObject(module, "error", ZooError);
112#if PY_MAJOR_VERSION >= 3
113  return module;
114#endif
115}
116
117int zoo_python_support(maps** main_conf,map* request,service* s,maps **real_inputs,maps **real_outputs){
118  char *pythonpath;
119  char *python_path;
120  maps* m=*main_conf;
121  maps* inputs=*real_inputs;
122  maps* outputs=*real_outputs;
123  map* tmp0=getMapFromMaps(*main_conf,"lenv","cwd");
124  char *ntmp=tmp0->value;
125  map* tmp=NULL;
126  int hasToClean=0;
127  tmp=getMapFromMaps(*main_conf,"env","PYTHONPATH");
128#ifdef DEBUG
129  fprintf(stderr,"PYTHON SUPPORT \n");
130#endif
131  if(tmp!=NULL){
132#ifdef DEBUG
133    fprintf(stderr,"PYTHON SUPPORT (%i)\n",strlen(tmp->value));
134#endif
135    python_path=(char*)malloc((strlen(tmp->value))*sizeof(char));
136    sprintf(python_path,"%s",tmp->value);
137    hasToClean=1;
138  }
139  else{
140    python_path=".";
141  }
142  tmp=NULL;
143  tmp=getMap(request,"metapath");
144  if(tmp!=NULL && strcmp(tmp->value,"")!=0){
145    pythonpath=(char*)malloc((4+strlen(python_path)+strlen(ntmp)+strlen(tmp->value))*sizeof(char));
146#ifdef WIN32
147  sprintf(pythonpath,"%s/%s/;%s",ntmp,tmp->value,python_path);
148#else
149  sprintf(pythonpath,"%s/%s/:%s",ntmp,tmp->value,python_path);
150#endif
151  }
152  else{
153    pythonpath=(char*)malloc((2+strlen(python_path)+strlen(ntmp))*sizeof(char));
154#ifdef WIN32
155    sprintf(pythonpath,"%s;%s",ntmp,python_path);
156#else
157    sprintf(pythonpath,"%s:%s",ntmp,python_path);
158#endif
159  }
160#ifdef DEBUG
161    fprintf(stderr,"PYTHONPATH=%s\n",pythonpath);
162#endif
163#ifndef WIN32
164  setenv("PYTHONPATH",pythonpath,1);
165#else
166  SetEnvironmentVariable("PYTHONPATH",pythonpath);
167  char* toto=(char*)malloc((strlen(pythonpath)+12)*sizeof(char));
168  sprintf(toto,"PYTHONPATH=%s",pythonpath);
169  putenv(toto);
170  free(toto);
171#endif
172  if(hasToClean>0)
173    free(python_path);
174  free(pythonpath);
175
176  PyThreadState *mainstate;
177#if PY_MAJOR_VERSION >= 3
178  PyImport_AppendInittab("zoo", init_zoo);
179#else
180  PyEval_InitThreads();
181#endif
182  Py_Initialize();
183#if PY_MAJOR_VERSION >= 3
184  PyEval_InitThreads();
185  PyImport_ImportModule("zoo");
186#else
187  init_zoo();
188#endif
189  mainstate = PyThreadState_Swap(NULL);
190  PyEval_ReleaseLock();
191  PyGILState_STATE gstate;
192  gstate = PyGILState_Ensure();
193  PyObject *pName, *pModule, *pFunc;
194  tmp=getMap(s->content,"serviceProvider");
195  if(tmp!=NULL)
196    pName = PyString_FromString(tmp->value);
197  else{
198    map* err=createMap("text","Unable to parse serviceProvider please check your zcfg file.");
199    addToMap(err,"code","NoApplicableCode");
200    printExceptionReportResponse(m,err);
201    exit(-1);
202  }
203  pModule = PyImport_Import(pName);
204  int res=SERVICE_FAILED;
205  if (pModule != NULL) {
206    pFunc=PyObject_GetAttrString(pModule,s->name);
207    if (pFunc && PyCallable_Check(pFunc)){
208      PyObject *pValue;
209      PyDictObject* arg1=PyDict_FromMaps(m);
210      PyDictObject* arg2=PyDict_FromMaps(inputs);
211      PyDictObject* arg3=PyDict_FromMaps(outputs);
212      PyObject *pArgs=PyTuple_New(3);
213      if (!pArgs)
214        return -1;
215      PyTuple_SetItem(pArgs, 0, (PyObject *)arg1);
216      PyTuple_SetItem(pArgs, 1, (PyObject *)arg2);
217      PyTuple_SetItem(pArgs, 2, (PyObject *)arg3);
218      pValue = PyObject_CallObject(pFunc, pArgs);
219      if (pValue != NULL) {
220        res=PyInt_AsLong(pValue);
221        freeMaps(real_outputs);
222        free(*real_outputs);
223        freeMaps(main_conf);
224        free(*main_conf);
225        *main_conf=mapsFromPyDict(arg1);
226        *real_outputs=mapsFromPyDict(arg3);
227#ifdef DEBUG
228        fprintf(stderr,"Result of call: %i\n", PyInt_AsLong(pValue));
229        dumpMaps(inputs);
230        dumpMaps(*real_outputs);
231#endif
232      }else{     
233        PyObject *ptype,*pvalue, *ptraceback;
234        PyErr_Fetch(&ptype, &pvalue, &ptraceback);
235        PyObject *trace=PyObject_Str(pvalue);
236        char pbt[10240];
237        if(PyString_Check(trace))
238          sprintf(pbt,"TRACE : %s",PyString_AsString(trace));
239        else
240          fprintf(stderr,"EMPTY TRACE ?");
241        trace=NULL;
242        trace=PyObject_Str(ptype);
243        if(PyString_Check(trace)){
244          char *tpbt=zStrdup(pbt);
245          sprintf(pbt,"%s\n%s\0",tpbt,PyString_AsString(trace));
246          free(tpbt);
247        }
248        else
249          fprintf(stderr,"EMPTY TRACE ?");
250       
251        char *tpbt=zStrdup(pbt);
252        pName = PyString_FromString("traceback");
253        pModule = PyImport_Import(pName);
254        pArgs = PyTuple_New(1);
255        PyTuple_SetItem(pArgs, 0, ptraceback);
256        pFunc = PyObject_GetAttrString(pModule,"format_tb");
257        pValue = PyObject_CallObject(pFunc, pArgs);
258        trace=NULL;
259        trace=PyObject_Str(pValue);
260        if(PyString_Check(trace))
261          sprintf(pbt,"%s\nUnable to run your python process properly. Please check the following messages : %s",tpbt,PyString_AsString(trace));
262        else
263          sprintf(pbt,"%s \n Unable to run your python process properly. Unable to provide any futher informations. %s",tpbt);
264        free(tpbt);
265        map* err=createMap("text",pbt);
266        addToMap(err,"code","NoApplicableCode");
267        printExceptionReportResponse(m,err);
268        res=-1;
269      }
270    }
271    else{
272      char tmpS[1024];
273      sprintf(tmpS, "Cannot find the %s function in the %s file.\n", s->name, tmp->value);
274      map* tmps=createMap("text",tmpS);
275      printExceptionReportResponse(m,tmps);
276      res=-1;
277    }
278  } else{
279    char tmpS[1024];
280    sprintf(tmpS, "Python module %s cannot be loaded.\n", tmp->value);
281    map* tmps=createMap("text",tmpS);
282    printExceptionReportResponse(m,tmps);
283    if (PyErr_Occurred())
284      PyErr_Print();
285    PyErr_Clear();
286    res=-1;
287    //exit(-1);
288  } 
289#if PY_MAJOR_VERSION < 3
290  PyGILState_Release(gstate);
291  PyEval_ReleaseLock();
292#endif
293  PyThreadState_Swap(mainstate);
294  Py_Finalize();
295  return res;
296}
297
298PyDictObject* PyDict_FromMaps(maps* t){
299  PyObject* res=PyDict_New( );
300  maps* tmp=t;
301  while(tmp!=NULL){
302    PyObject* value=(PyObject*)PyDict_FromMap(tmp->content);
303    PyObject* name=PyString_FromString(tmp->name);
304    if(PyDict_SetItem(res,name,value)<0){
305      fprintf(stderr,"Unable to set map value ...");
306      return NULL;
307    }
308    Py_DECREF(name);
309    tmp=tmp->next;
310  } 
311  return (PyDictObject*) res;
312}
313
314PyDictObject* PyDict_FromMap(map* t){
315  PyObject* res=PyDict_New( );
316  map* tmp=t;
317  int hasSize=0;
318  map* isArray=getMap(tmp,"isArray");
319  map* size=getMap(tmp,"size");
320  map* tmap=getMapType(tmp);
321  while(tmp!=NULL){
322    PyObject* name=PyString_FromString(tmp->name);
323    if(strcasecmp(tmp->name,"value")==0) {
324      if(isArray!=NULL){
325        map* len=getMap(tmp,"length");
326        int cnt=atoi(len->value);
327        PyObject* value=PyList_New(cnt);
328        PyObject* mvalue=PyList_New(cnt);
329        PyObject* svalue=PyList_New(cnt);
330
331        for(int i=0;i<cnt;i++){
332         
333          map* vMap=getMapArray(tmp,"value",i);     
334          map* sMap=getMapArray(tmp,"size",i);
335
336          if(vMap!=NULL){
337           
338            PyObject* lvalue;
339            PyObject* lsvalue;
340            if(sMap==NULL){
341              lvalue=PyString_FromString(vMap->value);
342              lsvalue=Py_None;
343            }
344            else{   
345              lvalue=PyString_FromStringAndSize(vMap->value,atoi(sMap->value));
346              lsvalue=PyString_FromString(sMap->value);
347              hasSize=1;
348            }
349
350            if(PyList_SetItem(value,i,lvalue)<0){
351              fprintf(stderr,"Unable to set key value pair...");
352              return NULL;
353            } 
354            if(PyList_SetItem(svalue,i,lsvalue)<0){
355              fprintf(stderr,"Unable to set key value pair...");
356              return NULL;
357            } 
358          }
359         
360          map* mMap=getMapArray(tmp,tmap->name,i);
361          PyObject* lmvalue;
362          if(mMap!=NULL){
363            lmvalue=PyString_FromString(mMap->value);
364          }else
365            lmvalue=Py_None;
366         
367          if(PyList_SetItem(mvalue,i,lmvalue)<0){
368              fprintf(stderr,"Unable to set key value pair...");
369              return NULL;
370          } 
371         
372        }
373
374        if(PyDict_SetItem(res,name,value)<0){
375          fprintf(stderr,"Unable to set key value pair...");
376          return NULL;
377        }
378        if(PyDict_SetItem(res,PyString_FromString(tmap->name),mvalue)<0){
379          fprintf(stderr,"Unable to set key value pair...");
380          return NULL;
381        }
382        if(hasSize>0)
383          if(PyDict_SetItem(res,PyString_FromString("size"),svalue)<0){
384            fprintf(stderr,"Unable to set key value pair...");
385            return NULL;
386          }
387      }
388      else if(size!=NULL){
389        PyObject* value=PyString_FromStringAndSize(tmp->value,atoi(size->value));
390        if(PyDict_SetItem(res,name,value)<0){
391          Py_DECREF(value);
392          fprintf(stderr,"Unable to set key value pair...");
393          return NULL;
394        }
395        Py_DECREF(value);
396      }
397      else{
398        PyObject* value=PyString_FromString(tmp->value);
399        if(PyDict_SetItem(res,name,value)<0){
400          Py_DECREF(value);
401          fprintf(stderr,"Unable to set key value pair...");
402          return NULL;
403        }
404        Py_DECREF(value);
405      }
406    }
407    else{
408      if(PyDict_GetItem(res,name)==NULL){
409        PyObject* value=PyString_FromString(tmp->value);
410        if(PyDict_SetItem(res,name,value)<0){
411          Py_DECREF(value);
412          fprintf(stderr,"Unable to set key value pair...");
413          return NULL;
414        }
415        Py_DECREF(value);
416      }
417    }
418    Py_DECREF(name);
419    tmp=tmp->next;
420  }
421  return (PyDictObject*) res;
422}
423
424maps* mapsFromPyDict(PyDictObject* t){
425  maps* res=NULL;
426  maps* cursor=res;
427  PyObject* list=PyDict_Keys((PyObject*)t);
428  int nb=PyList_Size(list);
429  int i;
430  for(i=0;i<nb;i++){
431#ifdef DEBUG
432    fprintf(stderr,">> parsing maps %d\n",i);
433#endif
434    PyObject* key=PyList_GetItem(list,i);
435    PyObject* value=PyDict_GetItem((PyObject*)t,key);
436#ifdef DEBUG
437    fprintf(stderr,">> DEBUG VALUES : %s => %s\n",
438            PyString_AsString(key),PyString_AsString(value));
439#endif
440    cursor=(maps*)malloc(MAPS_SIZE);
441    cursor->name=PyString_AsString(key);
442    cursor->content=mapFromPyDict((PyDictObject*)value);
443#ifdef DEBUG
444    dumpMap(cursor->content);
445#endif
446    cursor->next=NULL;
447    if(res==NULL)
448      res=dupMaps(&cursor);
449    else
450      addMapsToMaps(&res,cursor);
451    freeMap(&cursor->content);
452    free(cursor->content);
453    free(cursor);
454    Py_DECREF(key);
455#ifdef DEBUG
456    dumpMaps(res);
457    fprintf(stderr,">> parsed maps %d\n",i);
458#endif
459  }
460  return res;
461}
462
463map* mapFromPyDict(PyDictObject* t){
464  map* res=NULL;
465  PyObject* list=PyDict_Keys((PyObject*)t);
466  int nb=PyList_Size(list);
467  int i;
468  for(i=0;i<nb;i++){
469    PyObject* key=PyList_GetItem(list,i);
470    PyObject* value=PyDict_GetItem((PyObject*)t,key);
471#ifdef DEBUG
472    fprintf(stderr,">> DEBUG VALUES : %s => %s\n",
473            PyString_AsString(key),PyString_AsString(value));
474#endif
475   
476    if(strcmp(PyString_AsString(key),"value")==0){
477      char *buffer=NULL;
478      Py_ssize_t size;
479#if PY_MAJOR_VERSION >= 3
480      buffer=_PyUnicode_AsStringAndSize(value,&size);
481#else
482      PyString_AsStringAndSize(value,&buffer,&size);
483#endif
484      if(res!=NULL){
485        addToMap(res,PyString_AsString(key),"");
486      }else{
487        res=createMap(PyString_AsString(key),"");
488      }
489      map* tmpR=getMap(res,"value");
490      free(tmpR->value);
491      tmpR->value=(char*)malloc((size+1)*sizeof(char));
492      memmove(tmpR->value,buffer,size*sizeof(char));
493      tmpR->value[size]=0;
494      char sin[1024];
495      sprintf(sin,"%d",size);
496      addToMap(res,"size",sin);
497    }else{
498      char* lkey=PyString_AsString(key);
499      char* lvalue=PyString_AsString(value);
500      if(res!=NULL){
501        if(PyString_Size(value)>0)
502          addToMap(res,lkey,lvalue);
503      }
504      else{
505        if(PyString_Size(value)>0)
506          res=createMap(lkey,lvalue);
507      }
508    }
509  }
510  return res;
511}
512
513PyObject*
514PythonTranslate(PyObject* self, PyObject* args)
515{
516  char *str;
517  if (!PyArg_ParseTuple(args, "s", &str)){
518#ifdef DEBUG
519    fprintf(stderr,"Incorrect arguments to update status function");
520#endif
521    return NULL;
522  }
523  return PyString_FromString(_ss(str));
524}
525
526PyObject*
527PythonUpdateStatus(PyObject* self, PyObject* args)
528{
529  maps* conf;
530  PyObject* confdict;
531  int istatus;
532  char* status;
533  if (!PyArg_ParseTuple(args, "O!i", &PyDict_Type, &confdict, &istatus)){
534#ifdef DEBUG
535    fprintf(stderr,"Incorrect arguments to update status function");
536#endif
537    return NULL;
538  }
539  if (istatus < 0 || istatus > 100){
540     PyErr_SetString(ZooError, "Status must be a percentage.");
541     return NULL;
542  }else{
543     char tmpStatus[4];
544     snprintf(tmpStatus, 4, "%i", istatus);
545     status = zStrdup(tmpStatus);
546  }
547  /* now update the map */
548  {
549    PyObject* lenv = PyMapping_GetItemString(confdict, "lenv");
550    if (lenv && PyMapping_Check(lenv)){
551      PyObject* valobj = PyString_FromString(status);
552      PyMapping_SetItemString(lenv, "status", valobj);
553      Py_DECREF(valobj);
554    }
555    Py_DECREF(lenv);
556  }
557  conf = mapsFromPyDict((PyDictObject*)confdict);
558  if (getMapFromMaps(conf,"lenv","status") != NULL){
559    if(status!=NULL){
560      setMapInMaps(conf,"lenv","status",status);
561      free(status);
562    }
563    else
564      setMapInMaps(conf,"lenv","status","15");
565    _updateStatus(conf);
566  }
567  freeMaps(&conf);
568  free(conf);
569  Py_RETURN_NONE;
570}
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