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-rw-r--r--src/vpp-api/python/vpp_papi/pneum_wrap.c200
1 files changed, 200 insertions, 0 deletions
diff --git a/src/vpp-api/python/vpp_papi/pneum_wrap.c b/src/vpp-api/python/vpp_papi/pneum_wrap.c
new file mode 100644
index 00000000000..5763707b517
--- /dev/null
+++ b/src/vpp-api/python/vpp_papi/pneum_wrap.c
@@ -0,0 +1,200 @@
+/*
+ * 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
+}