aboutsummaryrefslogtreecommitdiffstats
path: root/vpp-api/python/vpp_papi/pneum_wrap.c
blob: 18c4f2338697cdec1442f2803d2444e0f0f39a51 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
/*
 * 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"

static PyObject *pneum_callback = NULL;

int
wrap_pneum_callback (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);
  return (0);
}

static PyObject *
wrap_connect (PyObject *self, PyObject *args)
{
  char * name, * chroot_prefix = NULL;
  int rv;
  PyObject * temp;

  if (!PyArg_ParseTuple(args, "sO|s:wrap_connect", &name, &temp, &chroot_prefix))
    return (NULL);

  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 */

  Py_BEGIN_ALLOW_THREADS
  rv = pneum_connect(name, chroot_prefix);
  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);
}

void vl_msg_api_free(void *);

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; }

  vl_msg_api_free(data);
  return ret;
}

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."},
  {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
}