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319 lines (283 loc) · 10.5 KB
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//-----------------------------------------------------------------------------
// Copyright 2016, 2017, Oracle and/or its affiliates. All rights reserved.
//
// Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
//
// Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
// Canada. All rights reserved.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Error.c
// Error handling.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// structure for the Python type
//-----------------------------------------------------------------------------
typedef struct {
PyObject_HEAD
long code;
unsigned offset;
PyObject *message;
PyObject *context;
char isRecoverable;
} udt_Error;
//-----------------------------------------------------------------------------
// forward declarations
//-----------------------------------------------------------------------------
static void Error_Free(udt_Error*);
static PyObject *Error_Str(udt_Error*);
static PyObject *Error_New(PyTypeObject*, PyObject*, PyObject*);
static PyObject *Error_Reduce(udt_Error*);
//-----------------------------------------------------------------------------
// declaration of methods
//-----------------------------------------------------------------------------
static PyMethodDef g_ErrorMethods[] = {
{ "__reduce__", (PyCFunction) Error_Reduce, METH_NOARGS },
{ NULL, NULL }
};
//-----------------------------------------------------------------------------
// declaration of members
//-----------------------------------------------------------------------------
static PyMemberDef g_ErrorMembers[] = {
{ "code", T_LONG, offsetof(udt_Error, code), READONLY },
{ "offset", T_UINT, offsetof(udt_Error, offset), READONLY },
{ "message", T_OBJECT, offsetof(udt_Error, message), READONLY },
{ "context", T_OBJECT, offsetof(udt_Error, context), READONLY },
{ "isrecoverable", T_BOOL, offsetof(udt_Error, isRecoverable), READONLY },
{ NULL }
};
//-----------------------------------------------------------------------------
// declaration of Python type
//-----------------------------------------------------------------------------
static PyTypeObject g_ErrorType = {
PyVarObject_HEAD_INIT(NULL, 0)
"cx_Oracle._Error", // tp_name
sizeof(udt_Error), // tp_basicsize
0, // tp_itemsize
(destructor) Error_Free, // tp_dealloc
0, // tp_print
0, // tp_getattr
0, // tp_setattr
0, // tp_compare
0, // tp_repr
0, // tp_as_number
0, // tp_as_sequence
0, // tp_as_mapping
0, // tp_hash
0, // tp_call
(reprfunc) Error_Str, // tp_str
0, // tp_getattro
0, // tp_setattro
0, // tp_as_buffer
Py_TPFLAGS_DEFAULT, // tp_flags
0, // tp_doc
0, // tp_traverse
0, // tp_clear
0, // tp_richcompare
0, // tp_weaklistoffset
0, // tp_iter
0, // tp_iternext
g_ErrorMethods, // tp_methods
g_ErrorMembers, // tp_members
0, // tp_getset
0, // tp_base
0, // tp_dict
0, // tp_descr_get
0, // tp_descr_set
0, // tp_dictoffset
0, // tp_init
0, // tp_alloc
Error_New, // tp_new
0, // tp_free
0, // tp_is_gc
0 // tp_bases
};
//-----------------------------------------------------------------------------
// Error_Free()
// Deallocate the error.
//-----------------------------------------------------------------------------
static void Error_Free(udt_Error *self)
{
Py_CLEAR(self->message);
Py_CLEAR(self->context);
PyObject_Del(self);
}
//-----------------------------------------------------------------------------
// Error_New()
// Create a new error object. This is intended to only be used by the
// unpickling routine, and not by direct creation!
//-----------------------------------------------------------------------------
static PyObject *Error_New(PyTypeObject *type, PyObject *args,
PyObject *keywordArgs)
{
PyObject *message, *context;
int isRecoverable, code;
udt_Error *self;
unsigned offset;
isRecoverable = 0;
if (!PyArg_ParseTuple(args, "OiIO|i", &message, &code, &offset, &context,
&isRecoverable))
return NULL;
self = (udt_Error*) type->tp_alloc(type, 0);
if (!self)
return NULL;
self->code = code;
self->offset = offset;
self->isRecoverable = (char) isRecoverable;
Py_INCREF(message);
self->message = message;
Py_INCREF(context);
self->context = context;
return (PyObject*) self;
}
//-----------------------------------------------------------------------------
// Error_Str()
// Return a string representation of the error variable.
//-----------------------------------------------------------------------------
static PyObject *Error_Str(udt_Error *self)
{
Py_INCREF(self->message);
return self->message;
}
//-----------------------------------------------------------------------------
// Error_InternalNew()
// Internal method for creating an error object from the DPI error
// information.
//-----------------------------------------------------------------------------
static udt_Error *Error_InternalNew(dpiErrorInfo *errorInfo)
{
PyObject *format, *args, *fnName, *action;
udt_Error *self;
// create error object and initialize it
self = (udt_Error*) g_ErrorType.tp_alloc(&g_ErrorType, 0);
if (!self)
return NULL;
self->code = errorInfo->code;
self->offset = errorInfo->offset;
self->isRecoverable = (char) errorInfo->isRecoverable;
// create message
self->message = cxString_FromEncodedString(errorInfo->message,
errorInfo->messageLength, errorInfo->encoding);
if (!self->message) {
Py_DECREF(self);
return NULL;
}
// create context composed of function name and action
fnName = cxString_FromAscii(errorInfo->fnName);
if (!fnName) {
Py_DECREF(self);
return NULL;
}
action = cxString_FromAscii(errorInfo->action);
if (!action) {
Py_DECREF(fnName);
Py_DECREF(self);
return NULL;
}
args = PyTuple_Pack(2, fnName, action);
Py_DECREF(fnName);
Py_DECREF(action);
if (!args) {
Py_DECREF(self);
return NULL;
}
format = cxString_FromAscii("%s: %s");
if (!format) {
Py_DECREF(self);
Py_DECREF(args);
return NULL;
}
self->context = cxString_Format(format, args);
Py_DECREF(format);
Py_DECREF(args);
if (!self->context) {
Py_DECREF(self);
return NULL;
}
return self;
}
//-----------------------------------------------------------------------------
// Error_RaiseFromInfo()
// Internal method for raising an exception given an error information
// structure from DPI. Return -1 as a convenience to the caller.
//-----------------------------------------------------------------------------
static int Error_RaiseFromInfo(dpiErrorInfo *errorInfo)
{
PyObject *exceptionType;
udt_Error *self;
self = Error_InternalNew(errorInfo);
if (!self)
return -1;
switch (errorInfo->code) {
case 1:
case 1400:
case 2290:
case 2291:
case 2292:
exceptionType = g_IntegrityErrorException;
break;
case 22:
case 378:
case 602:
case 603:
case 604:
case 609:
case 1012:
case 1013:
case 1033:
case 1034:
case 1041:
case 1043:
case 1089:
case 1090:
case 1092:
case 3113:
case 3114:
case 3122:
case 3135:
case 12153:
case 12203:
case 12500:
case 12571:
case 27146:
case 28511:
exceptionType = g_OperationalErrorException;
break;
default:
exceptionType = g_DatabaseErrorException;
break;
}
PyErr_SetObject(exceptionType, (PyObject*) self);
Py_DECREF(self);
return -1;
}
//-----------------------------------------------------------------------------
// Error_RaiseAndReturnInt()
// Internal method for raising an exception from an error generated from DPI.
// Return -1 as a convenience to the caller.
//-----------------------------------------------------------------------------
static int Error_RaiseAndReturnInt(void)
{
dpiErrorInfo errorInfo;
dpiContext_getError(g_DpiContext, &errorInfo);
return Error_RaiseFromInfo(&errorInfo);
}
//-----------------------------------------------------------------------------
// Error_RaiseAndReturnNull()
// Internal method for raising an exception from an error generated from DPI.
// Return NULL as a convenience to the caller.
//-----------------------------------------------------------------------------
static PyObject *Error_RaiseAndReturnNull(void)
{
Error_RaiseAndReturnInt();
return NULL;
}
//-----------------------------------------------------------------------------
// Error_Reduce()
// Method provided for pickling/unpickling of Error objects.
//-----------------------------------------------------------------------------
static PyObject *Error_Reduce(udt_Error *self)
{
return Py_BuildValue("(O(OiIO))", Py_TYPE(self), self->message,
self->code, self->offset, self->context);
}
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