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authorDaniel Veillard <veillard@redhat.com>2008-10-31 10:13:45 +0000
committerDaniel Veillard <veillard@redhat.com>2008-10-31 10:13:45 +0000
commit000818421b5007e1ee65c3fa8fef12bcf08feea2 (patch)
tree2dfd825507d5c75d1ee393bf229706f48dcf2f56 /libvir.c
parent494cd4b4c291391cc5f4f3c20e4f60667c1dd2fb (diff)
downloadlibvirt-python-v6-000818421b5007e1ee65c3fa8fef12bcf08feea2.tar.gz
libvirt-python-v6-000818421b5007e1ee65c3fa8fef12bcf08feea2.tar.xz
libvirt-python-v6-000818421b5007e1ee65c3fa8fef12bcf08feea2.zip
* python/Makefile.am python/generator.py python/libvir.c
python/libvir.py python/libvirt_wrap.h python/types.c: adds support for events from the python bindings, also improves the generator allowing to embbed per function definition files, patch by Ben Guthro * examples/domain-events/events-python/event-test.py: also adds a programming example Daniel
Diffstat (limited to 'libvir.c')
-rw-r--r--libvir.c441
1 files changed, 441 insertions, 0 deletions
diff --git a/libvir.c b/libvir.c
index 9cc0c81..a2e4c79 100644
--- a/libvir.c
+++ b/libvir.c
@@ -1466,7 +1466,443 @@ libvirt_virStoragePoolLookupByUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *ar
return(py_retval);
}
+/*******************************************
+ * Helper functions to avoid importing modules
+ * for every callback
+ *******************************************/
+static PyObject *libvirt_module = NULL;
+static PyObject *libvirt_dict = NULL;
+static PyObject *libvirt_dom_class = NULL;
+static PyObject *
+getLibvirtModuleObject (void) {
+ if(libvirt_module)
+ return libvirt_module;
+
+ // PyImport_ImportModule returns a new reference
+ libvirt_module = PyImport_ImportModule("libvirt");
+ if(!libvirt_module) {
+ printf("%s Error importing libvirt module\n", __FUNCTION__);
+ PyErr_Print();
+ return NULL;
+ }
+
+ return libvirt_module;
+}
+
+static PyObject *
+getLibvirtDictObject (void) {
+ if(libvirt_dict)
+ return libvirt_dict;
+
+ // PyModule_GetDict returns a borrowed reference
+ libvirt_dict = PyModule_GetDict(getLibvirtModuleObject());
+ if(!libvirt_dict) {
+ printf("%s Error importing libvirt dictionary\n", __FUNCTION__);
+ PyErr_Print();
+ return NULL;
+ }
+
+ Py_INCREF(libvirt_dict);
+ return libvirt_dict;
+}
+
+static PyObject *
+getLibvirtDomainClassObject (void) {
+ if(libvirt_dom_class)
+ return libvirt_dom_class;
+
+ // PyDict_GetItemString returns a borrowed reference
+ libvirt_dom_class = PyDict_GetItemString(getLibvirtDictObject(),
+ "virDomain");
+ if(!libvirt_dom_class) {
+ printf("%s Error importing virDomain class\n", __FUNCTION__);
+ PyErr_Print();
+ return NULL;
+ }
+
+ Py_INCREF(libvirt_dom_class);
+ return libvirt_dom_class;
+}
+/*******************************************
+ * Domain Events
+ *******************************************/
+
+static int
+libvirt_virConnectDomainEventCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
+ virDomainPtr dom,
+ int event,
+ void *opaque)
+{
+ PyObject *pyobj_ret;
+
+ PyObject *pyobj_conn_inst = (PyObject*)opaque;
+ PyObject *pyobj_dom = libvirt_virDomainPtrWrap(dom);
+
+ PyObject *pyobj_dom_args;
+ PyObject *pyobj_dom_inst;
+
+ PyObject *dom_class;
+
+ /* Create a python instance of this virDomainPtr */
+ pyobj_dom_args = PyTuple_New(2);
+ if(PyTuple_SetItem(pyobj_dom_args, 0, pyobj_conn_inst)!=0) {
+ printf("%s error creating tuple",__FUNCTION__);
+ return -1;
+ }
+ if(PyTuple_SetItem(pyobj_dom_args, 1, pyobj_dom)!=0) {
+ printf("%s error creating tuple",__FUNCTION__);
+ return -1;
+ }
+ Py_INCREF(pyobj_conn_inst);
+
+ dom_class = getLibvirtDomainClassObject();
+ if(!PyClass_Check(dom_class)) {
+ printf("%s dom_class is not a class!\n", __FUNCTION__);
+ return -1;
+ }
+
+ pyobj_dom_inst = PyInstance_New(dom_class,
+ pyobj_dom_args,
+ NULL);
+
+ Py_DECREF(pyobj_dom_args);
+
+ if(!pyobj_dom_inst) {
+ printf("%s Error creating a python instance of virDomain\n", __FUNCTION__);
+ PyErr_Print();
+ return -1;
+ }
+
+ /* Call the Callback Dispatcher */
+ pyobj_ret = PyObject_CallMethod(pyobj_conn_inst,
+ (char*)"dispatchDomainEventCallbacks",
+ (char*)"Oi",
+ pyobj_dom_inst,
+ event);
+
+ Py_DECREF(pyobj_dom_inst);
+
+ if(!pyobj_ret) {
+ printf("%s - ret:%p\n", __FUNCTION__, pyobj_ret);
+ PyErr_Print();
+ return -1;
+ } else {
+ Py_DECREF(pyobj_ret);
+ return 0;
+ }
+
+}
+
+static PyObject *
+libvirt_virConnectDomainEventRegister(ATTRIBUTE_UNUSED PyObject * self,
+ PyObject * args)
+{
+ PyObject *py_retval; /* return value */
+ PyObject *pyobj_conn; /* virConnectPtr */
+ PyObject *pyobj_conn_inst; /* virConnect Python object */
+
+ virConnectPtr conn;
+ int ret = 0;
+
+ if (!PyArg_ParseTuple
+ (args, (char *) "OO:virConnectDomainEventRegister",
+ &pyobj_conn, &pyobj_conn_inst)) {
+ printf("%s failed parsing tuple\n", __FUNCTION__);
+ return VIR_PY_INT_FAIL;
+ }
+
+#ifdef DEBUG_ERROR
+ printf("libvirt_virConnectDomainEventRegister(%p %p) called\n",
+ pyobj_conn, pyobj_conn_inst);
+#endif
+ conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+
+ Py_INCREF(pyobj_conn_inst);
+
+ ret = virConnectDomainEventRegister(conn,
+ libvirt_virConnectDomainEventCallback,
+ (void *)pyobj_conn_inst);
+
+ py_retval = libvirt_intWrap(ret);
+ return (py_retval);
+}
+
+static PyObject *
+libvirt_virConnectDomainEventDeregister(ATTRIBUTE_UNUSED PyObject * self,
+ PyObject * args)
+{
+ PyObject *py_retval;
+ PyObject *pyobj_conn;
+ PyObject *pyobj_conn_inst;
+
+ virConnectPtr conn;
+ int ret = 0;
+
+ if (!PyArg_ParseTuple
+ (args, (char *) "OO:virConnectDomainEventDeregister",
+ &pyobj_conn, &pyobj_conn_inst))
+ return (NULL);
+
+#ifdef DEBUG_ERROR
+ printf("libvirt_virConnectDomainEventDeregister(%p) called\n", pyobj_conn);
+#endif
+
+ conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+
+ ret = virConnectDomainEventDeregister(conn, libvirt_virConnectDomainEventCallback);
+
+ Py_DECREF(pyobj_conn_inst);
+ py_retval = libvirt_intWrap(ret);
+ return (py_retval);
+}
+
+/*******************************************
+ * Event Impl
+ *******************************************/
+static PyObject *addHandleObj = NULL;
+static PyObject *updateHandleObj = NULL;
+static PyObject *removeHandleObj = NULL;
+static PyObject *addTimeoutObj = NULL;
+static PyObject *updateTimeoutObj = NULL;
+static PyObject *removeTimeoutObj = NULL;
+
+
+static int
+libvirt_virEventAddHandleFunc (int fd ATTRIBUTE_UNUSED, int event ATTRIBUTE_UNUSED,
+ virEventHandleCallback cb, void *opaque)
+{
+ PyObject *result = NULL;
+ PyObject *python_cb;
+ PyObject *cb_obj;
+ PyObject *opaque_obj;
+ PyObject *cb_args;
+ PyObject *pyobj_args;
+
+ /* Lookup the python callback */
+ python_cb = PyDict_GetItemString(getLibvirtDictObject(),
+ "eventInvokeHandleCallback");
+ if(!python_cb) {
+ printf("%s Error finding eventInvokeHandleCallback\n", __FUNCTION__);
+ PyErr_Print();
+ return -1;
+ }
+ Py_INCREF(python_cb);
+
+ /* create tuple for cb */
+ cb_obj = libvirt_virEventHandleCallbackWrap(cb);
+ opaque_obj = libvirt_virVoidPtrWrap(opaque);
+
+ cb_args = PyTuple_New(2);
+ PyTuple_SetItem(cb_args, 0, cb_obj);
+ PyTuple_SetItem(cb_args, 1, opaque_obj);
+
+ pyobj_args = PyTuple_New(4);
+ PyTuple_SetItem(pyobj_args, 0, libvirt_intWrap(fd));
+ PyTuple_SetItem(pyobj_args, 1, libvirt_intWrap(event));
+ PyTuple_SetItem(pyobj_args, 2, python_cb);
+ PyTuple_SetItem(pyobj_args, 3, cb_args);
+
+ if(addHandleObj && PyCallable_Check(addHandleObj))
+ result = PyEval_CallObject(addHandleObj, pyobj_args);
+
+ Py_XDECREF(result);
+ Py_DECREF(pyobj_args);
+ return 0;
+}
+
+static void
+libvirt_virEventUpdateHandleFunc(int fd, int event)
+{
+ PyObject *result = NULL;
+ PyObject *pyobj_args = PyTuple_New(2);
+ PyTuple_SetItem(pyobj_args, 0, libvirt_intWrap(fd));
+ PyTuple_SetItem(pyobj_args, 1, libvirt_intWrap(event));
+
+ if(updateHandleObj && PyCallable_Check(updateHandleObj))
+ result = PyEval_CallObject(updateHandleObj, pyobj_args);
+
+ Py_XDECREF(result);
+ Py_DECREF(pyobj_args);
+}
+
+static int
+libvirt_virEventRemoveHandleFunc(int fd)
+{
+ PyObject *result = NULL;
+ PyObject *pyobj_args = PyTuple_New(1);
+ PyTuple_SetItem(pyobj_args, 0, libvirt_intWrap(fd));
+
+ if(removeHandleObj && PyCallable_Check(removeHandleObj))
+ result = PyEval_CallObject(removeHandleObj, pyobj_args);
+
+ Py_XDECREF(result);
+ Py_DECREF(pyobj_args);
+ return 0;
+}
+
+static int
+libvirt_virEventAddTimeoutFunc(int timeout, virEventTimeoutCallback cb,
+ void *opaque)
+{
+ PyObject *result = NULL;
+
+ PyObject *python_cb;
+
+ PyObject *cb_obj;
+ PyObject *opaque_obj;
+ PyObject *cb_args;
+ PyObject *pyobj_args;
+
+ /* Lookup the python callback */
+ python_cb = PyDict_GetItemString(getLibvirtDictObject(),
+ "eventInvokeTimeoutCallback");
+ if(!python_cb) {
+ printf("%s Error finding eventInvokeTimeoutCallback\n", __FUNCTION__);
+ PyErr_Print();
+ return -1;
+ }
+ Py_INCREF(python_cb);
+
+ /* create tuple for cb */
+ cb_obj = libvirt_virEventTimeoutCallbackWrap(cb);
+ opaque_obj = libvirt_virVoidPtrWrap(opaque);
+
+ cb_args = PyTuple_New(2);
+ PyTuple_SetItem(cb_args, 0, cb_obj);
+ PyTuple_SetItem(cb_args, 1, opaque_obj);
+
+ pyobj_args = PyTuple_New(3);
+
+ PyTuple_SetItem(pyobj_args, 0, libvirt_intWrap(timeout));
+ PyTuple_SetItem(pyobj_args, 1, python_cb);
+ PyTuple_SetItem(pyobj_args, 2, cb_args);
+
+ if(addTimeoutObj && PyCallable_Check(addTimeoutObj))
+ result = PyEval_CallObject(addTimeoutObj, pyobj_args);
+
+ Py_XDECREF(result);
+ Py_DECREF(pyobj_args);
+ return 0;
+}
+
+static void
+libvirt_virEventUpdateTimeoutFunc(int timer, int timeout)
+{
+ PyObject *result = NULL;
+ PyObject *pyobj_args = PyTuple_New(2);
+ PyTuple_SetItem(pyobj_args, 0, libvirt_intWrap(timer));
+ PyTuple_SetItem(pyobj_args, 1, libvirt_intWrap(timeout));
+
+ if(updateTimeoutObj && PyCallable_Check(updateTimeoutObj))
+ result = PyEval_CallObject(updateTimeoutObj, pyobj_args);
+
+ Py_XDECREF(result);
+ Py_DECREF(pyobj_args);
+}
+
+static int
+libvirt_virEventRemoveTimeoutFunc(int timer)
+{
+ PyObject *result = NULL;
+ PyObject *pyobj_args = PyTuple_New(1);
+ PyTuple_SetItem(pyobj_args, 0, libvirt_intWrap(timer));
+
+ if(updateTimeoutObj && PyCallable_Check(updateTimeoutObj))
+ result = PyEval_CallObject(removeTimeoutObj, pyobj_args);
+
+ Py_XDECREF(result);
+ Py_DECREF(pyobj_args);
+ return 0;
+}
+
+static PyObject *
+libvirt_virEventRegisterImpl(ATTRIBUTE_UNUSED PyObject * self,
+ PyObject * args)
+{
+ Py_XDECREF(addHandleObj);
+ Py_XDECREF(updateHandleObj);
+ Py_XDECREF(removeHandleObj);
+ Py_XDECREF(addTimeoutObj);
+ Py_XDECREF(updateTimeoutObj);
+ Py_XDECREF(removeTimeoutObj);
+
+ if (!PyArg_ParseTuple
+ (args, (char *) "OOOOOO:virEventRegisterImpl",
+ &addHandleObj,
+ &updateHandleObj,
+ &removeHandleObj,
+ &addTimeoutObj,
+ &updateTimeoutObj,
+ &removeTimeoutObj
+ ))
+ return VIR_PY_INT_FAIL;
+
+ Py_INCREF(addHandleObj);
+ Py_INCREF(updateHandleObj);
+ Py_INCREF(removeHandleObj);
+ Py_INCREF(addTimeoutObj);
+ Py_INCREF(updateTimeoutObj);
+ Py_INCREF(removeTimeoutObj);
+
+ virEventRegisterImpl(libvirt_virEventAddHandleFunc,
+ libvirt_virEventUpdateHandleFunc,
+ libvirt_virEventRemoveHandleFunc,
+ libvirt_virEventAddTimeoutFunc,
+ libvirt_virEventUpdateTimeoutFunc,
+ libvirt_virEventRemoveTimeoutFunc);
+
+ return VIR_PY_INT_SUCCESS;
+}
+
+static PyObject *
+libvirt_virEventInvokeHandleCallback(PyObject *self ATTRIBUTE_UNUSED,
+ PyObject *args)
+{
+ int fd, event;
+ PyObject *py_f;
+ PyObject *py_opaque;
+ virEventHandleCallback cb;
+ void *opaque;
+
+ if (!PyArg_ParseTuple
+ (args, (char *) "iiOO:virEventInvokeHandleCallback",
+ &fd, &event, &py_f, &py_opaque
+ ))
+ return VIR_PY_INT_FAIL;
+
+ cb = (virEventHandleCallback) PyvirEventHandleCallback_Get(py_f);
+ opaque = (void *) PyvirVoidPtr_Get(py_opaque);
+
+ if(cb)
+ cb (fd, event, opaque);
+
+ return VIR_PY_INT_SUCCESS;
+}
+
+static PyObject *
+libvirt_virEventInvokeTimeoutCallback(PyObject *self ATTRIBUTE_UNUSED,
+ PyObject *args)
+{
+ int timer;
+ PyObject *py_f;
+ PyObject *py_opaque;
+ virEventTimeoutCallback cb;
+ void *opaque;
+
+ if (!PyArg_ParseTuple
+ (args, (char *) "iOO:virEventInvokeTimeoutCallback",
+ &timer, &py_f, &py_opaque
+ ))
+ return VIR_PY_INT_FAIL;
+
+ cb = (virEventTimeoutCallback) PyvirEventTimeoutCallback_Get(py_f);
+ opaque = (void *) PyvirVoidPtr_Get(py_opaque);
+ if(cb)
+ cb (timer, opaque);
+
+ return VIR_PY_INT_SUCCESS;
+}
/************************************************************************
* *
@@ -1479,6 +1915,8 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virConnectOpenAuth", libvirt_virConnectOpenAuth, METH_VARARGS, NULL},
{(char *) "virConnectListDomainsID", libvirt_virConnectListDomainsID, METH_VARARGS, NULL},
{(char *) "virConnectListDefinedDomains", libvirt_virConnectListDefinedDomains, METH_VARARGS, NULL},
+ {(char *) "virConnectDomainEventRegister", libvirt_virConnectDomainEventRegister, METH_VARARGS, NULL},
+ {(char *) "virConnectDomainEventDeregister", libvirt_virConnectDomainEventDeregister, METH_VARARGS, NULL},
{(char *) "virDomainGetInfo", libvirt_virDomainGetInfo, METH_VARARGS, NULL},
{(char *) "virNodeGetInfo", libvirt_virNodeGetInfo, METH_VARARGS, NULL},
{(char *) "virDomainGetUUID", libvirt_virDomainGetUUID, METH_VARARGS, NULL},
@@ -1511,6 +1949,9 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virStoragePoolGetUUID", libvirt_virStoragePoolGetUUID, METH_VARARGS, NULL},
{(char *) "virStoragePoolGetUUIDString", libvirt_virStoragePoolGetUUIDString, METH_VARARGS, NULL},
{(char *) "virStoragePoolLookupByUUID", libvirt_virStoragePoolLookupByUUID, METH_VARARGS, NULL},
+ {(char *) "virEventRegisterImpl", libvirt_virEventRegisterImpl, METH_VARARGS, NULL},
+ {(char *) "virEventInvokeHandleCallback", libvirt_virEventInvokeHandleCallback, METH_VARARGS, NULL},
+ {(char *) "virEventInvokeTimeoutCallback", libvirt_virEventInvokeTimeoutCallback, METH_VARARGS, NULL},
{NULL, NULL, 0, NULL}
};