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Propagate libvirt errors back with python exceptions

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This commit is contained in:
Daniel P. Berrange 2006-11-07 23:18:56 +00:00
parent 287e5fe8a7
commit e444b199db
4 changed files with 137 additions and 4 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
Tue Nov 7 16:17:23 EDT 2006 Daniel P. Berrange <berrange@redhat.com>
* python/generator.py: Pass in connection object when generating
an exception
* python/libvir.py: Allow raw error object to be passed into the
python exception object.
* python/libvir.c: Added binding for virGetLastError and
virConnGetLastError
Tue Nov 7 15:58:43 EDT 2006 Daniel P. Berrange <berrange@redhat.com>
* src/xend_internal.c: Ensure that virConnectPtr object is passed

15
python/generator.py
View File

@ -260,6 +260,8 @@ foreign_encoding_args = (
# code is still automatically generated (so they are not in skip_function()).
skip_impl = (
'virConnectListDomainsID',
'virConnGetLastError',
'virGetLastError',
'virDomainGetInfo',
'virNodeGetInfo',
'virDomainGetUUID',
@ -869,9 +871,18 @@ def buildWrappers():
classes.write(
" if ret is None:return None\n");
else:
classes.write(
if classname == "virConnect":
classes.write(
" if ret is None:raise libvirtError('%s() failed', conn=self)\n" %
(name))
elif classname == "virDomain":
classes.write(
" if ret is None:raise libvirtError('%s() failed')\n" %
(name))
(name))
else:
classes.write(
" if ret is None:raise libvirtError('%s() failed')\n" %
(name))
#
# generate the returned class wrapper for the object

60
python/libvir.c
View File

@ -18,6 +18,8 @@
void initlibvirmod(void);
PyObject *libvirt_virDomainGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args);
PyObject *libvirt_virGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args);
PyObject *libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args);
/************************************************************************
@ -29,6 +31,62 @@ PyObject *libvirt_virDomainGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *ar
static PyObject *libvirt_virPythonErrorFuncHandler = NULL;
static PyObject *libvirt_virPythonErrorFuncCtxt = NULL;
PyObject *
libvirt_virGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args ATTRIBUTE_UNUSED)
{
virError err;
PyObject *info;
if (virCopyLastError(&err) <= 0) {
Py_INCREF(Py_None);
return(Py_None);
}
info = PyTuple_New(9);
PyTuple_SetItem(info, 0, PyInt_FromLong((long) err.code));
PyTuple_SetItem(info, 1, PyInt_FromLong((long) err.domain));
PyTuple_SetItem(info, 2, libvirt_constcharPtrWrap(err.message));
PyTuple_SetItem(info, 3, PyInt_FromLong((long) err.level));
PyTuple_SetItem(info, 4, libvirt_constcharPtrWrap(err.str1));
PyTuple_SetItem(info, 5, libvirt_constcharPtrWrap(err.str2));
PyTuple_SetItem(info, 6, libvirt_constcharPtrWrap(err.str3));
PyTuple_SetItem(info, 7, PyInt_FromLong((long) err.int1));
PyTuple_SetItem(info, 8, PyInt_FromLong((long) err.int2));
return info;
}
PyObject *
libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args)
{
virError err;
PyObject *info;
virConnectPtr conn;
PyObject *pyobj_conn;
if (!PyArg_ParseTuple(args, (char *)"O:virConGetLastError", &pyobj_conn))
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
if (virConnCopyLastError(conn, &err) <= 0) {
Py_INCREF(Py_None);
return(Py_None);
}
info = PyTuple_New(9);
PyTuple_SetItem(info, 0, PyInt_FromLong((long) err.code));
PyTuple_SetItem(info, 1, PyInt_FromLong((long) err.domain));
PyTuple_SetItem(info, 2, libvirt_constcharPtrWrap(err.message));
PyTuple_SetItem(info, 3, PyInt_FromLong((long) err.level));
PyTuple_SetItem(info, 4, libvirt_constcharPtrWrap(err.str1));
PyTuple_SetItem(info, 5, libvirt_constcharPtrWrap(err.str2));
PyTuple_SetItem(info, 6, libvirt_constcharPtrWrap(err.str3));
PyTuple_SetItem(info, 7, PyInt_FromLong((long) err.int1));
PyTuple_SetItem(info, 8, PyInt_FromLong((long) err.int2));
return info;
}
static void
libvirt_virErrorFuncHandler(ATTRIBUTE_UNUSED void *ctx, virErrorPtr err)
{
@ -311,6 +369,8 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virDomainGetUUID", libvirt_virDomainGetUUID, METH_VARARGS, NULL},
{(char *) "virDomainLookupByUUID", libvirt_virDomainLookupByUUID, METH_VARARGS, NULL},
{(char *) "virRegisterErrorHandler", libvirt_virRegisterErrorHandler, METH_VARARGS, NULL},
{(char *) "virGetLastError", libvirt_virGetLastError, METH_VARARGS, NULL},
{(char *) "virConnGetLastError", libvirt_virConnGetLastError, METH_VARARGS, NULL},
{NULL, NULL, 0, NULL}
};

57
python/libvir.py
View File

@ -7,10 +7,63 @@
import libvirtmod
import types
# The root of all libxml2 errors.
# The root of all libvirt errors.
class libvirtError(Exception):
pass
def __init__(self, msg, conn=None):
Exception.__init__(self, msg)
if conn is None:
self.err = virGetLastError()
else:
self.err = conn.virConnGetLastError()
def get_error_code(self):
if self.err is None:
return None
return self.err[0]
def get_error_domain(self):
if self.err is None:
return None
return self.err[1]
def get_error_message(self):
if self.err is None:
return None
return self.err[2]
def get_error_level(self):
if self.err is None:
return None
return self.err[3]
def get_str1(self):
if self.err is None:
return None
return self.err[4]
def get_str2(self):
if self.err is None:
return None
return self.err[5]
def get_str3(self):
if self.err is None:
return None
return self.err[6]
def get_int1(self):
if self.err is None:
return None
return self.err[7]
def get_int2(self):
if self.err is None:
return None
return self.err[8]
def __str__(self):
return Exception.__str__(self) + " " + self.get_error_message()
#
# register the libvirt global error handler