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utils.c
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utils.c
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/*-------------------------------------------------------------------------
*
* The Multicorn Foreign Data Wrapper allows you to fetch foreign data in
* Python in your PostgreSQL.
*
* This module contains helpers meant to be called from python code.
*
* This software is released under the postgresql licence
*
* author: Kozea
*
*
*-------------------------------------------------------------------------
*/
#include <Python.h>
#include "postgres.h"
struct module_state
{
PyObject *error;
};
#if PY_MAJOR_VERSION >= 3
#define GETSTATE(m) ((struct module_state*)PyModule_GetState(m))
#else
#define GETSTATE(m) (&_state)
static struct module_state _state;
#endif
static PyObject *
log_to_postgres(PyObject *self, PyObject *args, PyObject *kwargs)
{
char *message = NULL;
char *hintstr = NULL,
*detailstr = NULL;
int level = 1;
int severity;
PyObject *hint,
*p_message,
*detail;
if (!PyArg_ParseTuple(args, "O|i", &p_message, &level))
{
errorCheck();
Py_INCREF(Py_None);
return Py_None;
}
if (PyBytes_Check(p_message))
{
message = PyBytes_AsString(p_message);
}
else if (PyUnicode_Check(p_message))
{
message = strdup(PyUnicode_AsPgString(p_message));
}
else
{
PyObject *temp = PyObject_Str(p_message);
errorCheck();
message = strdup(PyString_AsString(temp));
errorCheck();
Py_DECREF(temp);
}
switch (level)
{
case 0:
severity = DEBUG1;
break;
case 1:
severity = NOTICE;
break;
case 2:
severity = WARNING;
break;
case 3:
severity = ERROR;
break;
case 4:
severity = FATAL;
break;
default:
severity = INFO;
break;
}
hint = PyDict_GetItemString(kwargs, "hint");
detail = PyDict_GetItemString(kwargs, "detail");
if (errstart(severity, __FILE__, __LINE__, PG_FUNCNAME_MACRO, TEXTDOMAIN))
{
errmsg("%s", message);
if (hint != NULL && hint != Py_None)
{
hintstr = PyString_AsString(hint);
errhint("%s", hintstr);
Py_DECREF(hint);
}
if (detail != NULL && detail != Py_None)
{
detailstr = PyString_AsString(detail);
errdetail("%s", detailstr);
Py_DECREF(detail);
}
Py_DECREF(args);
Py_DECREF(kwargs);
Py_INCREF(Py_None);
errfinish(0);
}
else
{
Py_DECREF(args);
Py_DECREF(kwargs);
Py_INCREF(Py_None);
}
return Py_None;
}
static PyMethodDef UtilsMethods[] = {
{"_log_to_postgres", (PyCFunction) log_to_postgres, METH_VARARGS | METH_KEYWORDS, "Log to postresql client"},
{NULL, NULL, 0, NULL}
};
#if PY_MAJOR_VERSION >= 3
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
"multicorn._utils",
NULL,
sizeof(struct module_state),
UtilsMethods,
NULL,
NULL,
NULL,
NULL
};
#define INITERROR return NULL
PyObject *
PyInit__utils(void)
#else
#define INITERROR return
void
init_utils(void)
#endif
{
#if PY_MAJOR_VERSION >= 3
PyObject *module = PyModule_Create(&moduledef);
#else
PyObject *module = Py_InitModule("multicorn._utils", UtilsMethods);
#endif
if (module == NULL)
INITERROR;
struct module_state *st = GETSTATE(module);
#if PY_MAJOR_VERSION >= 3
return module;
#endif
}