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//-----------------------------------------------------------------------------
// Copyright (c) 2016, 2020, 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.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// cxoError.c
// Error handling.
//-----------------------------------------------------------------------------
#include "cxoModule.h"
//-----------------------------------------------------------------------------
// forward declarations
//-----------------------------------------------------------------------------
static void cxoError_free(cxoError *error);
static PyObject *cxoError_str(cxoError *error);
static PyObject *cxoError_new(PyTypeObject *type, PyObject *args,
PyObject *keywordArgs);
static PyObject *cxoError_reduce(cxoError*);
//-----------------------------------------------------------------------------
// declaration of methods
//-----------------------------------------------------------------------------
static PyMethodDef cxoErrorMethods[] = {
{ "__reduce__", (PyCFunction) cxoError_reduce, METH_NOARGS },
{ NULL, NULL }
};
//-----------------------------------------------------------------------------
// declaration of members
//-----------------------------------------------------------------------------
static PyMemberDef cxoErrorMembers[] = {
{ "code", T_LONG, offsetof(cxoError, code), READONLY },
{ "offset", T_UINT, offsetof(cxoError, offset), READONLY },
{ "message", T_OBJECT, offsetof(cxoError, message), READONLY },
{ "context", T_OBJECT, offsetof(cxoError, context), READONLY },
{ "isrecoverable", T_BOOL, offsetof(cxoError, isRecoverable), READONLY },
{ NULL }
};
//-----------------------------------------------------------------------------
// declaration of Python type
//-----------------------------------------------------------------------------
PyTypeObject cxoPyTypeError = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "cx_Oracle._Error",
.tp_basicsize = sizeof(cxoError),
.tp_dealloc = (destructor) cxoError_free,
.tp_str = (reprfunc) cxoError_str,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_methods = cxoErrorMethods,
.tp_members = cxoErrorMembers,
.tp_new = cxoError_new
};
//-----------------------------------------------------------------------------
// cxoError_free()
// Deallocate the error.
//-----------------------------------------------------------------------------
static void cxoError_free(cxoError *error)
{
Py_CLEAR(error->message);
Py_CLEAR(error->context);
PyObject_Del(error);
}
//-----------------------------------------------------------------------------
// cxoError_new()
// Create a new error object. This is intended to only be used by the
// unpickling routine, and not by direct creation!
//-----------------------------------------------------------------------------
static PyObject *cxoError_new(PyTypeObject *type, PyObject *args,
PyObject *keywordArgs)
{
PyObject *message, *context;
int isRecoverable, code;
cxoError *error;
unsigned offset;
isRecoverable = 0;
if (!PyArg_ParseTuple(args, "OiIO|i", &message, &code, &offset, &context,
&isRecoverable))
return NULL;
error = (cxoError*) type->tp_alloc(type, 0);
if (!error)
return NULL;
error->code = code;
error->offset = offset;
error->isRecoverable = (char) isRecoverable;
Py_INCREF(message);
error->message = message;
Py_INCREF(context);
error->context = context;
return (PyObject*) error;
}
//-----------------------------------------------------------------------------
// cxoError_newFromInfo()
// Internal method for creating an error object from the DPI error
// information.
//-----------------------------------------------------------------------------
cxoError *cxoError_newFromInfo(dpiErrorInfo *errorInfo)
{
cxoError *error;
// create error object and initialize it
error = (cxoError*) cxoPyTypeError.tp_alloc(&cxoPyTypeError, 0);
if (!error)
return NULL;
error->code = errorInfo->code;
error->offset = errorInfo->offset;
error->isRecoverable = (char) errorInfo->isRecoverable;
// create message
error->message = PyUnicode_Decode(errorInfo->message,
errorInfo->messageLength, errorInfo->encoding, NULL);
if (!error->message) {
Py_DECREF(error);
return NULL;
}
// create context composed of function name and action
error->context = PyUnicode_FromFormat("%s: %s", errorInfo->fnName,
errorInfo->action);
if (!error->context) {
Py_DECREF(error);
return NULL;
}
return error;
}
//-----------------------------------------------------------------------------
// cxoError_newFromString()
// Internal method for creating an error object from the DPI error
// information.
//-----------------------------------------------------------------------------
static cxoError *cxoError_newFromString(const char *message)
{
cxoError *error;
error = (cxoError*) cxoPyTypeError.tp_alloc(&cxoPyTypeError, 0);
if (!error)
return NULL;
Py_INCREF(Py_None);
error->context = Py_None;
error->message = PyUnicode_DecodeASCII(message, strlen(message), NULL);
if (!error->message) {
Py_DECREF(error);
return NULL;
}
return error;
}
//-----------------------------------------------------------------------------
// cxoError_raiseAndReturnInt()
// Internal method for raising an exception from an error generated from DPI.
// Return -1 as a convenience to the caller.
//-----------------------------------------------------------------------------
int cxoError_raiseAndReturnInt(void)
{
dpiErrorInfo errorInfo;
dpiContext_getError(cxoDpiContext, &errorInfo);
return cxoError_raiseFromInfo(&errorInfo);
}
//-----------------------------------------------------------------------------
// cxoError_raiseAndReturnNull()
// Internal method for raising an exception from an error generated from DPI.
// Return NULL as a convenience to the caller.
//-----------------------------------------------------------------------------
PyObject *cxoError_raiseAndReturnNull(void)
{
cxoError_raiseAndReturnInt();
return NULL;
}
//-----------------------------------------------------------------------------
// cxoError_raiseFromInfo()
// Internal method for raising an exception given an error information
// structure from DPI. Return -1 as a convenience to the caller.
//-----------------------------------------------------------------------------
int cxoError_raiseFromInfo(dpiErrorInfo *errorInfo)
{
PyObject *exceptionType;
cxoError *error;
error = cxoError_newFromInfo(errorInfo);
if (!error)
return -1;
switch (errorInfo->code) {
case 1: // unique constraint violated
case 1400: // cannot insert NULL
case 2290: // check constraint violated
case 2291: // integrity constraint violated - parent key not found
case 2292: // integrity constraint violated - child record found
case 40479: // internal JSON serializer error
exceptionType = cxoIntegrityErrorException;
break;
case 22: // invalid session ID; access denied
case 378: // buffer pools cannot be created as specified
case 600: // internal error code
case 602: // internal programming exception
case 603: // ORACLE server session terminated by fatal error
case 604: // error occurred at recursive SQL level
case 609: // could not attach to incoming connection
case 1012: // not logged on
case 1013: // user requested cancel of current operation
case 1033: // ORACLE initialization or shutdown in progress
case 1034: // ORACLE not available
case 1041: // internal error. hostdef extension doesn't exist
case 1043: // user side memory corruption
case 1089: // immediate shutdown or close in progress
case 1090: // shutdown in progress - connection is not permitted
case 1092: // ORACLE instance terminated. Disconnection forced
case 3113: // end-of-file on communication channel
case 3114: // not connected to ORACLE
case 3122: // attempt to close ORACLE-side window on user side
case 3135: // connection lost contact
case 12153: // TNS:not connected
case 12203: // TNS:unable to connect to destination
case 12500: // TNS:listener failed to start a dedicated server process
case 12571: // TNS:packet writer failure
case 27146: // post/wait initialization failed
case 28511: // lost RPC connection to heterogeneous remote agent
exceptionType = cxoOperationalErrorException;
break;
default:
exceptionType = cxoDatabaseErrorException;
break;
}
PyErr_SetObject(exceptionType, (PyObject*) error);
Py_DECREF(error);
return -1;
}
//-----------------------------------------------------------------------------
// cxoError_raiseFromString()
// Internal method for raising an exception given an error information
// structure from DPI. Return -1 as a convenience to the caller.
//-----------------------------------------------------------------------------
PyObject *cxoError_raiseFromString(PyObject *exceptionType,
const char *message)
{
cxoError *error;
error = cxoError_newFromString(message);
if (!error)
return NULL;
PyErr_SetObject(exceptionType, (PyObject*) error);
Py_DECREF(error);
return NULL;
}
//-----------------------------------------------------------------------------
// cxoError_reduce()
// Method provided for pickling/unpickling of Error objects.
//-----------------------------------------------------------------------------
static PyObject *cxoError_reduce(cxoError *error)
{
return Py_BuildValue("(O(OiIO))", Py_TYPE(error), error->message,
error->code, error->offset, error->context);
}
//-----------------------------------------------------------------------------
// cxoError_str()
// Return a string representation of the error variable.
//-----------------------------------------------------------------------------
static PyObject *cxoError_str(cxoError *error)
{
Py_INCREF(error->message);
return error->message;
}
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