source: trunk/zoo-project/zoo-kernel/service_internal_python.c @ 486

Last change on this file since 486 was 478, checked in by djay, 10 years ago

Fix issue on win32 platform for Python support. Remove dirent.obj dependency from utils/status service. readVSIFile defined when MapServer? is not activated.

  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 15.2 KB
Line 
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  } 
288#if PY_MAJOR_VERSION < 3
289  PyGILState_Release(gstate);
290  PyEval_AcquireLock();
291#endif
292  PyThreadState_Swap(mainstate);
293  Py_Finalize();
294  return res;
295}
296
297PyDictObject* PyDict_FromMaps(maps* t){
298  PyObject* res=PyDict_New( );
299  maps* tmp=t;
300  while(tmp!=NULL){
301    PyObject* value=(PyObject*)PyDict_FromMap(tmp->content);
302    PyObject* name=PyString_FromString(tmp->name);
303    if(PyDict_SetItem(res,name,value)<0){
304      fprintf(stderr,"Unable to set map value ...");
305      return NULL;
306    }
307    Py_DECREF(name);
308    tmp=tmp->next;
309  } 
310  return (PyDictObject*) res;
311}
312
313PyDictObject* PyDict_FromMap(map* t){
314  PyObject* res=PyDict_New( );
315  map* tmp=t;
316  int hasSize=0;
317  map* isArray=getMap(tmp,"isArray");
318  map* size=getMap(tmp,"size");
319  map* tmap=getMapType(tmp);
320  while(tmp!=NULL){
321    PyObject* name=PyString_FromString(tmp->name);
322    if(strcasecmp(tmp->name,"value")==0) {
323      if(isArray!=NULL){
324        map* len=getMap(tmp,"length");
325        int cnt=atoi(len->value);
326        PyObject* value=PyList_New(cnt);
327        PyObject* mvalue=PyList_New(cnt);
328        PyObject* svalue=PyList_New(cnt);
329
330        for(int i=0;i<cnt;i++){
331         
332          map* vMap=getMapArray(tmp,"value",i);     
333          map* sMap=getMapArray(tmp,"size",i);
334
335          if(vMap!=NULL){
336           
337            PyObject* lvalue;
338            PyObject* lsvalue;
339            if(sMap==NULL){
340              lvalue=PyString_FromString(vMap->value);
341              lsvalue=Py_None;
342            }
343            else{   
344              lvalue=PyString_FromStringAndSize(vMap->value,atoi(sMap->value));
345              lsvalue=PyString_FromString(sMap->value);
346              hasSize=1;
347            }
348
349            if(PyList_SetItem(value,i,lvalue)<0){
350              fprintf(stderr,"Unable to set key value pair...");
351              return NULL;
352            } 
353            if(PyList_SetItem(svalue,i,lsvalue)<0){
354              fprintf(stderr,"Unable to set key value pair...");
355              return NULL;
356            } 
357          }
358         
359          map* mMap=getMapArray(tmp,tmap->name,i);
360          PyObject* lmvalue;
361          if(mMap!=NULL){
362            lmvalue=PyString_FromString(mMap->value);
363          }else
364            lmvalue=Py_None;
365         
366          if(PyList_SetItem(mvalue,i,lmvalue)<0){
367              fprintf(stderr,"Unable to set key value pair...");
368              return NULL;
369          } 
370         
371        }
372
373        if(PyDict_SetItem(res,name,value)<0){
374          fprintf(stderr,"Unable to set key value pair...");
375          return NULL;
376        }
377        if(PyDict_SetItem(res,PyString_FromString(tmap->name),mvalue)<0){
378          fprintf(stderr,"Unable to set key value pair...");
379          return NULL;
380        }
381        if(hasSize>0)
382          if(PyDict_SetItem(res,PyString_FromString("size"),svalue)<0){
383            fprintf(stderr,"Unable to set key value pair...");
384            return NULL;
385          }
386      }
387      else if(size!=NULL){
388        PyObject* value=PyString_FromStringAndSize(tmp->value,atoi(size->value));
389        if(PyDict_SetItem(res,name,value)<0){
390          Py_DECREF(value);
391          fprintf(stderr,"Unable to set key value pair...");
392          return NULL;
393        }
394        Py_DECREF(value);
395      }
396      else{
397        PyObject* value=PyString_FromString(tmp->value);
398        if(PyDict_SetItem(res,name,value)<0){
399          Py_DECREF(value);
400          fprintf(stderr,"Unable to set key value pair...");
401          return NULL;
402        }
403        Py_DECREF(value);
404      }
405    }
406    else{
407      if(PyDict_GetItem(res,name)==NULL){
408        PyObject* value=PyString_FromString(tmp->value);
409        if(PyDict_SetItem(res,name,value)<0){
410          Py_DECREF(value);
411          fprintf(stderr,"Unable to set key value pair...");
412          return NULL;
413        }
414        Py_DECREF(value);
415      }
416    }
417    Py_DECREF(name);
418    tmp=tmp->next;
419  }
420  return (PyDictObject*) res;
421}
422
423maps* mapsFromPyDict(PyDictObject* t){
424  maps* res=NULL;
425  maps* cursor=res;
426  PyObject* list=PyDict_Keys((PyObject*)t);
427  int nb=PyList_Size(list);
428  int i;
429  for(i=0;i<nb;i++){
430#ifdef DEBUG
431    fprintf(stderr,">> parsing maps %d\n",i);
432#endif
433    PyObject* key=PyList_GetItem(list,i);
434    PyObject* value=PyDict_GetItem((PyObject*)t,key);
435#ifdef DEBUG
436    fprintf(stderr,">> DEBUG VALUES : %s => %s\n",
437            PyString_AsString(key),PyString_AsString(value));
438#endif
439    cursor=(maps*)malloc(MAPS_SIZE);
440    cursor->name=PyString_AsString(key);
441    cursor->content=mapFromPyDict((PyDictObject*)value);
442#ifdef DEBUG
443    dumpMap(cursor->content);
444#endif
445    cursor->next=NULL;
446    if(res==NULL)
447      res=dupMaps(&cursor);
448    else
449      addMapsToMaps(&res,cursor);
450    freeMap(&cursor->content);
451    free(cursor->content);
452    free(cursor);
453    Py_DECREF(key);
454#ifdef DEBUG
455    dumpMaps(res);
456    fprintf(stderr,">> parsed maps %d\n",i);
457#endif
458  }
459  return res;
460}
461
462map* mapFromPyDict(PyDictObject* t){
463  map* res=NULL;
464  PyObject* list=PyDict_Keys((PyObject*)t);
465  int nb=PyList_Size(list);
466  int i;
467  for(i=0;i<nb;i++){
468    PyObject* key=PyList_GetItem(list,i);
469    PyObject* value=PyDict_GetItem((PyObject*)t,key);
470#ifdef DEBUG
471    fprintf(stderr,">> DEBUG VALUES : %s => %s\n",
472            PyString_AsString(key),PyString_AsString(value));
473#endif
474   
475    if(strcmp(PyString_AsString(key),"value")==0){
476      char *buffer=NULL;
477      Py_ssize_t size;
478#if PY_MAJOR_VERSION >= 3
479      buffer=_PyUnicode_AsStringAndSize(value,&size);
480#else
481      PyString_AsStringAndSize(value,&buffer,&size);
482#endif
483      if(res!=NULL){
484        addToMap(res,PyString_AsString(key),"");
485      }else{
486        res=createMap(PyString_AsString(key),"");
487      }
488      map* tmpR=getMap(res,"value");
489      free(tmpR->value);
490      tmpR->value=(char*)malloc((size+1)*sizeof(char));
491      memmove(tmpR->value,buffer,size*sizeof(char));
492      tmpR->value[size]=0;
493      char sin[1024];
494      sprintf(sin,"%d",size);
495      addToMap(res,"size",sin);
496    }else{
497      char* lkey=PyString_AsString(key);
498      char* lvalue=PyString_AsString(value);
499      if(res!=NULL){
500        if(PyString_Size(value)>0)
501          addToMap(res,lkey,lvalue);
502      }
503      else{
504        if(PyString_Size(value)>0)
505          res=createMap(lkey,lvalue);
506      }
507    }
508  }
509  return res;
510}
511
512PyObject*
513PythonTranslate(PyObject* self, PyObject* args)
514{
515  char *str;
516  if (!PyArg_ParseTuple(args, "s", &str)){
517#ifdef DEBUG
518    fprintf(stderr,"Incorrect arguments to update status function");
519#endif
520    return NULL;
521  }
522  return PyString_FromString(_ss(str));
523}
524
525PyObject*
526PythonUpdateStatus(PyObject* self, PyObject* args)
527{
528  maps* conf;
529  PyObject* confdict;
530  int istatus;
531  char* status;
532  if (!PyArg_ParseTuple(args, "O!i", &PyDict_Type, &confdict, &istatus)){
533#ifdef DEBUG
534    fprintf(stderr,"Incorrect arguments to update status function");
535#endif
536    return NULL;
537  }
538  if (istatus < 0 || istatus > 100){
539     PyErr_SetString(ZooError, "Status must be a percentage.");
540     return NULL;
541  }else{
542     char tmpStatus[4];
543     snprintf(tmpStatus, 4, "%i", istatus);
544     status = zStrdup(tmpStatus);
545  }
546  /* now update the map */
547  {
548    PyObject* lenv = PyMapping_GetItemString(confdict, "lenv");
549    if (lenv && PyMapping_Check(lenv)){
550      PyObject* valobj = PyString_FromString(status);
551      PyMapping_SetItemString(lenv, "status", valobj);
552      Py_DECREF(valobj);
553    }
554    Py_DECREF(lenv);
555  }
556  conf = mapsFromPyDict((PyDictObject*)confdict);
557  if (getMapFromMaps(conf,"lenv","status") != NULL){
558    if(status!=NULL){
559      setMapInMaps(conf,"lenv","status",status);
560      free(status);
561    }
562    else
563      setMapInMaps(conf,"lenv","status","15");
564    _updateStatus(conf);
565  }
566  freeMaps(&conf);
567  free(conf);
568  Py_RETURN_NONE;
569}
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