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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <Python.h>
#include "../pneum/pneum.h"
#include <vppinfra/hash.h>
static PyObject *pneum_callback = NULL;
static void
wrap_pneum_callback (unsigned char * data, int len)
{
PyGILState_STATE gstate;
PyObject *result;//, *arglist;
gstate = PyGILState_Ensure();
/* Time to call the callback */
#if PY_VERSION_HEX >= 0x03000000
result = PyObject_CallFunction(pneum_callback, "y#", data, len);
#else
result = PyObject_CallFunction(pneum_callback, "s#", data, len);
#endif
if (result)
Py_DECREF(result);
else
PyErr_Print();
PyGILState_Release(gstate);
}
static PyObject *
wrap_connect (PyObject *self, PyObject *args)
{
char * name, * chroot_prefix = NULL;
int rv;
PyObject * temp = NULL;
pneum_callback_t cb = NULL;
if (!PyArg_ParseTuple(args, "s|Os:wrap_connect",
&name, &temp, &chroot_prefix))
return (NULL);
if (temp)
{
if (!PyCallable_Check(temp))
{
PyErr_SetString(PyExc_TypeError, "parameter must be callable");
return NULL;
}
Py_XINCREF(temp); /* Add a reference to new callback */
Py_XDECREF(pneum_callback); /* Dispose of previous callback */
pneum_callback = temp; /* Remember new callback */
cb = wrap_pneum_callback;
}
Py_BEGIN_ALLOW_THREADS
rv = pneum_connect(name, chroot_prefix, cb);
Py_END_ALLOW_THREADS
return PyLong_FromLong(rv);
}
static PyObject *
wrap_disconnect (PyObject *self, PyObject *args)
{
int rv;
Py_BEGIN_ALLOW_THREADS
rv = pneum_disconnect();
Py_END_ALLOW_THREADS
return PyLong_FromLong(rv);
}
static PyObject *
wrap_write (PyObject *self, PyObject *args)
{
char *data;
int len, rv;
if (!PyArg_ParseTuple(args, "s#", &data, &len))
return NULL;
Py_BEGIN_ALLOW_THREADS
rv = pneum_write(data, len);
Py_END_ALLOW_THREADS
return PyLong_FromLong(rv);
}
static PyObject *
wrap_read (PyObject *self, PyObject *args)
{
char *data;
int len, rv;
Py_BEGIN_ALLOW_THREADS
rv = pneum_read(&data, &len);
Py_END_ALLOW_THREADS
if (rv != 0) { Py_RETURN_NONE; }
#if PY_VERSION_HEX >= 0x03000000
PyObject *ret = Py_BuildValue("y#", data, len);
#else
PyObject *ret = Py_BuildValue("s#", data, len);
#endif
if (!ret) { Py_RETURN_NONE; }
pneum_free(data);
return ret;
}
static PyObject *
wrap_msg_table (PyObject *self, PyObject *args)
{
int i = 0, rv = 0;
hash_pair_t *hp;
uword *h = pneum_msg_table_get_hash();
PyObject *ret = PyList_New(pneum_msg_table_size());
if (!ret) goto error;
hash_foreach_pair (hp, h,
({
PyObject *item = PyTuple_New(2);
if (!item) goto error;
rv = PyTuple_SetItem(item, 0, PyLong_FromLong((u32)hp->value[0]));
if (rv) goto error;
rv = PyTuple_SetItem(item, 1, PyString_FromString((char *)hp->key));
if (rv) goto error;
PyList_SetItem(ret, i, item);
i++;
}));
return ret;
error:
/* TODO: Raise exception */
printf("msg_table failed");
Py_RETURN_NONE;
}
static PyMethodDef vpp_api_Methods[] = {
{"connect", wrap_connect, METH_VARARGS, "Connect to the VPP API."},
{"disconnect", wrap_disconnect, METH_VARARGS, "Disconnect from the VPP API."},
{"write", wrap_write, METH_VARARGS, "Write data to the VPP API."},
{"read", wrap_read, METH_VARARGS, "Read data from the VPP API."},
{"msg_table", wrap_msg_table, METH_VARARGS, "Get API dictionary."},
{NULL, NULL, 0, NULL} /* Sentinel */
};
#if PY_VERSION_HEX >= 0x03000000
PyMODINIT_FUNC
PyInit_vpp_api (void)
#else
void
initvpp_api (void)
#endif
{
#if PY_VERSION_HEX >= 0x03000000
static struct PyModuleDef vpp_api_module = {
#if PY_VERSION_HEX >= 0x03020000
PyModuleDef_HEAD_INIT,
#else
{
PyObject_HEAD_INIT(NULL)
NULL, /* m_init */
0, /* m_index */
NULL, /* m_copy */
},
#endif
(char *) "vpp_api",
NULL,
-1,
vpp_api_Methods,
NULL,
NULL,
NULL,
NULL
};
#endif
/* Ensure threading is initialised */
if (!PyEval_ThreadsInitialized()) {
PyEval_InitThreads();
}
#if PY_VERSION_HEX >= 0x03000000
return PyModule_Create(&vpp_api_module);
#else
Py_InitModule((char *) "vpp_api", vpp_api_Methods);
return;
#endif
}
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