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python: Expose virDomain{G,S}etInterfaceParameters APIs in python binding

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The v4 patch corrects indentation issues.

The v3 patch follows latest python binding codes and change 'size'
type from int to Py_ssize_t.

An simple example to show how to use it:

#!/usr/bin/env python

import libvirt

conn = libvirt.open(None)
dom = conn.lookupByName('foo')

print dom.interfaceParameters('vnet0', 0)

params = {'outbound.peak': 10,
          'inbound.peak': 10,
          'inbound.burst': 20,
          'inbound.average': 20,
          'outbound.average': 30,
          'outbound.burst': 30}

print dom.setInterfaceParameters('vnet0', params, 0)
print dom.interfaceParameters('vnet0', 0)

Signed-off-by: Alex Jia <ajia@redhat.com>
This commit is contained in:
Alex Jia 2012-02-14 10:46:23 +08:00
parent 4c1c361127
commit 8b29c45986
2 changed files with 142 additions and 0 deletions
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16
python/libvirt-override-api.xml
View File

@ -261,6 +261,22 @@
<arg name='domain' type='virDomainPtr' info='pointer to domain object'/>
<arg name='flags' type='int' info='an OR&apos;ed set of virDomainModificationImpact'/>
</function>
<function name='virDomainSetInterfaceParameters' file='python'>
<info>Change the bandwidth tunables for a interface device</info>
<arg name='dom' type='virDomainPtr' info='pointer to the domain'/>
<arg name='device' type='const char *' info='interface name'/>
<arg name='params' type='virTypedParameterPtr' info='Pointer to bandwidth tuning params object'/>
<arg name='flags' type='unsigned int' info='an OR&apos;ed set of virDomainModificationImpact'/>
<return type='int' info='0 in case of success, -1 in case of failure'/>
</function>
<function name='virDomainGetInterfaceParameters' file='python'>
<info>Get the bandwidth tunables for a interface device</info>
<arg name='dom' type='virDomainPtr' info='pointer to the domain'/>
<arg name='device' type='const char *' info='interface name'/>
<arg name='flags' type='unsigned int' info='an OR&apos;ed set of virDomainModificationImpact'/>
<return type='str *' info='the bandwidth tunables value or None in case of error'/>
</function>
<function name='virConnectListStoragePools' file='python'>
<info>list the storage pools, stores the pointers to the names in @names</info>
<arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>

126
python/libvirt-override.c
View File

@ -1108,6 +1108,130 @@ cleanup:
return ret;
}
static PyObject *
libvirt_virDomainSetInterfaceParameters(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
virDomainPtr domain;
PyObject *pyobj_domain, *info;
PyObject *ret = NULL;
int i_retval;
int nparams = 0;
Py_ssize_t size = 0;
unsigned int flags;
const char *device = NULL;
virTypedParameterPtr params, new_params;
if (!PyArg_ParseTuple(args,
(char *)"OzOi:virDomainSetInterfaceParameters",
&pyobj_domain, &device, &info, &flags))
return NULL;
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
if ((size = PyDict_Size(info)) < 0)
return NULL;
if (size == 0) {
PyErr_Format(PyExc_LookupError,
"Need non-empty dictionary to set attributes");
return NULL;
}
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainGetInterfaceParameters(domain, device, NULL, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0)
return VIR_PY_INT_FAIL;
if (nparams == 0) {
PyErr_Format(PyExc_LookupError,
"Domain has no settable attributes");
return NULL;
}
if (VIR_ALLOC_N(params, nparams) < 0)
return PyErr_NoMemory();
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainGetInterfaceParameters(domain, device, params, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
ret = VIR_PY_INT_FAIL;
goto cleanup;
}
new_params = setPyVirTypedParameter(info, params, nparams);
if (!new_params)
goto cleanup;
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainSetInterfaceParameters(domain, device, new_params, size, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
ret = VIR_PY_INT_FAIL;
goto cleanup;
}
ret = VIR_PY_INT_SUCCESS;
cleanup:
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
VIR_FREE(new_params);
return ret;
}
static PyObject *
libvirt_virDomainGetInterfaceParameters(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
virDomainPtr domain;
PyObject *pyobj_domain;
PyObject *ret = NULL;
int i_retval;
int nparams = 0;
unsigned int flags;
const char *device = NULL;
virTypedParameterPtr params;
if (!PyArg_ParseTuple(args, (char *)"Ozi:virDomainGetInterfaceParameters",
&pyobj_domain, &device, &flags))
return NULL;
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainGetInterfaceParameters(domain, device, NULL, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0)
return VIR_PY_NONE;
if (!nparams)
return PyDict_New();
if (VIR_ALLOC_N(params, nparams) < 0)
return PyErr_NoMemory();
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainGetInterfaceParameters(domain, device, params, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
ret = VIR_PY_NONE;
goto cleanup;
}
ret = getPyVirTypedParameter(params, nparams);
cleanup:
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
return ret;
}
static PyObject *
libvirt_virDomainGetVcpus(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args) {
@ -5256,6 +5380,8 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virDomainGetMemoryParameters", libvirt_virDomainGetMemoryParameters, METH_VARARGS, NULL},
{(char *) "virDomainSetNumaParameters", libvirt_virDomainSetNumaParameters, METH_VARARGS, NULL},
{(char *) "virDomainGetNumaParameters", libvirt_virDomainGetNumaParameters, METH_VARARGS, NULL},
{(char *) "virDomainSetInterfaceParameters", libvirt_virDomainSetInterfaceParameters, METH_VARARGS, NULL},
{(char *) "virDomainGetInterfaceParameters", libvirt_virDomainGetInterfaceParameters, METH_VARARGS, NULL},
{(char *) "virDomainGetVcpus", libvirt_virDomainGetVcpus, METH_VARARGS, NULL},
{(char *) "virDomainPinVcpu", libvirt_virDomainPinVcpu, METH_VARARGS, NULL},
{(char *) "virDomainPinVcpuFlags", libvirt_virDomainPinVcpuFlags, METH_VARARGS, NULL},