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python: Implement virStreamSend/Recv

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The return values for the python version are different that the C version
of virStreamSend: on success we return a string, an error raises an exception,
and if the stream would block we return int(-2). We need to do this
since strings aren't passed by reference in python.
This commit is contained in:
Cole Robinson
2011-06-14 16:07:43 -04:00
parent a22dbe0d66
commit ca55dc598c
5 changed files with 117 additions and 4 deletions
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62
python/libvirt-override.c
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@@ -3697,6 +3697,66 @@ libvirt_virStreamEventAddCallback(PyObject *self ATTRIBUTE_UNUSED,
return py_retval;
}
static PyObject *
libvirt_virStreamRecv(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
PyObject *pyobj_stream;
virStreamPtr stream;
char *buf = NULL;
int ret;
int nbytes;
if (!PyArg_ParseTuple(args, (char *) "Oi:virStreamRecv",
&pyobj_stream, &nbytes)) {
DEBUG("%s failed to parse tuple\n", __FUNCTION__);
return VIR_PY_NONE;
}
stream = PyvirStream_Get(pyobj_stream);
if ((buf = malloc(nbytes+1 > 0 ? nbytes+1 : 1)) == NULL)
return VIR_PY_NONE;
LIBVIRT_BEGIN_ALLOW_THREADS;
ret = virStreamRecv(stream, buf, nbytes);
LIBVIRT_END_ALLOW_THREADS;
buf[ret > -1 ? ret : 0] = '\0';
DEBUG("StreamRecv ret=%d strlen=%d\n", ret, (int) strlen(buf));
if (ret < 0)
return libvirt_intWrap(ret);
return libvirt_charPtrSizeWrap((char *) buf, (Py_ssize_t) ret);
}
static PyObject *
libvirt_virStreamSend(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
PyObject *py_retval;
PyObject *pyobj_stream;
virStreamPtr stream;
char *data;
int ret;
int nbytes;
if (!PyArg_ParseTuple(args, (char *) "Ozi:virStreamRecv",
&pyobj_stream, &data, &nbytes)) {
DEBUG("%s failed to parse tuple\n", __FUNCTION__);
return VIR_PY_INT_FAIL;
}
stream = PyvirStream_Get(pyobj_stream);
LIBVIRT_BEGIN_ALLOW_THREADS;
ret = virStreamSend(stream, data, nbytes);
LIBVIRT_END_ALLOW_THREADS;
DEBUG("StreamSend ret=%d\n", ret);
py_retval = libvirt_intWrap(ret);
return py_retval;
}
/************************************************************************
* *
* The registration stuff *
@@ -3715,6 +3775,8 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virConnectDomainEventRegisterAny", libvirt_virConnectDomainEventRegisterAny, METH_VARARGS, NULL},
{(char *) "virConnectDomainEventDeregisterAny", libvirt_virConnectDomainEventDeregisterAny, METH_VARARGS, NULL},
{(char *) "virStreamEventAddCallback", libvirt_virStreamEventAddCallback, METH_VARARGS, NULL},
{(char *) "virStreamRecv", libvirt_virStreamRecv, METH_VARARGS, NULL},
{(char *) "virStreamSend", libvirt_virStreamSend, METH_VARARGS, NULL},
{(char *) "virDomainGetInfo", libvirt_virDomainGetInfo, METH_VARARGS, NULL},
{(char *) "virDomainGetState", libvirt_virDomainGetState, METH_VARARGS, NULL},
{(char *) "virDomainGetControlInfo", libvirt_virDomainGetControlInfo, METH_VARARGS, NULL},