X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fpython.c;h=d2ef1648742e4050aa7b4d645a552d73f3b9a18e;hb=da658a37ddd9421752903c4ff5f2aa83320387c5;hp=10ac8f0d149f815fa9d00e54bdda3e0123246029;hpb=51a4e62d7d0e73d8d5822efaef1e3218b5ad0373;p=collectd.git diff --git a/src/python.c b/src/python.c index 10ac8f0d..d2ef1648 100644 --- a/src/python.c +++ b/src/python.c @@ -46,6 +46,19 @@ typedef struct cpy_callback_s { static char log_doc[] = "This function sends a string to all logging plugins."; +static char get_ds_doc[] = "get_dataset(name) -> definition\n" + "\n" + "Returns the definition of a dataset specified by name.\n" + "\n" + "'name' is a string specifying the dataset to query.\n" + "'definition' is a list of 4-tuples. Every tuple represents a \n" + " data source within the data set and its 4 values are the \n" + " name, type, min and max value.\n" + " 'name' is a string.\n" + " 'type' is a string that is equal to either DS_TYPE_COUNTER,\n" + " DS_TYPE_GAUGE, DS_TYPE_DERIVE or DS_TYPE_ABSOLUTE.\n" + " 'min' and 'max' are either a float or None."; + static char flush_doc[] = "flush([plugin][, timeout][, identifier]) -> None\n" "\n" "Flushes the cache of another plugin."; @@ -548,7 +561,39 @@ static PyObject *cpy_register_generic(cpy_callback_t **list_head, PyObject *args return cpy_string_to_unicode_or_bytes(buf); } -static PyObject *cpy_flush(cpy_callback_t **list_head, PyObject *args, PyObject *kwds) { +static PyObject *float_or_none(float number) { + if (isnan(number)) { + Py_RETURN_NONE; + } + return PyFloat_FromDouble(number); +} + +static PyObject *cpy_get_dataset(PyObject *self, PyObject *args) { + int i; + char *name; + const data_set_t *ds; + PyObject *list, *tuple; + + if (PyArg_ParseTuple(args, "et", NULL, &name) == 0) return NULL; + ds = plugin_get_ds(name); + PyMem_Free(name); + if (ds == NULL) { + PyErr_Format(PyExc_TypeError, "Dataset %s not found", name); + return NULL; + } + list = PyList_New(ds->ds_num); /* New reference. */ + for (i = 0; i < ds->ds_num; ++i) { + tuple = PyTuple_New(4); + PyTuple_SET_ITEM(tuple, 0, cpy_string_to_unicode_or_bytes(ds->ds[i].name)); + PyTuple_SET_ITEM(tuple, 1, cpy_string_to_unicode_or_bytes(DS_TYPE_TO_STRING(ds->ds[i].type))); + PyTuple_SET_ITEM(tuple, 2, float_or_none(ds->ds[i].min)); + PyTuple_SET_ITEM(tuple, 3, float_or_none(ds->ds[i].max)); + PyList_SET_ITEM(list, i, tuple); + } + return list; +} + +static PyObject *cpy_flush(PyObject *self, PyObject *args, PyObject *kwds) { int timeout = -1; char *plugin = NULL, *identifier = NULL; static char *kwlist[] = {"plugin", "timeout", "identifier", NULL}; @@ -611,7 +656,6 @@ static PyObject *cpy_register_read(PyObject *self, PyObject *args, PyObject *kwd double interval = 0; char *name = NULL; PyObject *callback = NULL, *data = NULL; - struct timespec ts; static char *kwlist[] = {"callback", "interval", "data", "name", NULL}; if (PyArg_ParseTupleAndKeywords(args, kwds, "O|dOet", kwlist, &callback, &interval, &data, NULL, &name) == 0) return NULL; @@ -633,10 +677,8 @@ static PyObject *cpy_register_read(PyObject *self, PyObject *args, PyObject *kwd user_data = malloc(sizeof(*user_data)); user_data->free_func = cpy_destroy_user_data; user_data->data = c; - ts.tv_sec = interval; - ts.tv_nsec = (interval - ts.tv_sec) * 1000000000; plugin_register_complex_read(/* group = */ NULL, buf, - cpy_read_callback, &ts, user_data); + cpy_read_callback, DOUBLE_TO_CDTIME_T (interval), user_data); return cpy_string_to_unicode_or_bytes(buf); } @@ -817,6 +859,7 @@ static PyMethodDef cpy_methods[] = { {"notice", cpy_notice, METH_VARARGS, log_doc}, {"warning", cpy_warning, METH_VARARGS, log_doc}, {"error", cpy_error, METH_VARARGS, log_doc}, + {"get_dataset", (PyCFunction) cpy_get_dataset, METH_VARARGS, get_ds_doc}, {"flush", (PyCFunction) cpy_flush, METH_VARARGS | METH_KEYWORDS, flush_doc}, {"register_log", (PyCFunction) cpy_register_log, METH_VARARGS | METH_KEYWORDS, reg_log_doc}, {"register_init", (PyCFunction) cpy_register_init, METH_VARARGS | METH_KEYWORDS, reg_init_doc}, @@ -988,13 +1031,15 @@ PyMODINIT_FUNC PyInit_collectd(void) { #endif static int cpy_init_python() { - char *argv = ""; PyObject *sys; PyObject *module; #ifdef IS_PY3K + wchar_t *argv = L""; /* Add a builtin module, before Py_Initialize */ PyImport_AppendInittab("collectd", PyInit_collectd); +#else + char *argv = ""; #endif Py_Initialize(); @@ -1041,6 +1086,10 @@ static int cpy_init_python() { PyModule_AddIntConstant(module, "NOTIF_FAILURE", NOTIF_FAILURE); PyModule_AddIntConstant(module, "NOTIF_WARNING", NOTIF_WARNING); PyModule_AddIntConstant(module, "NOTIF_OKAY", NOTIF_OKAY); + PyModule_AddStringConstant(module, "DS_TYPE_COUNTER", DS_TYPE_TO_STRING(DS_TYPE_COUNTER)); + PyModule_AddStringConstant(module, "DS_TYPE_GAUGE", DS_TYPE_TO_STRING(DS_TYPE_GAUGE)); + PyModule_AddStringConstant(module, "DS_TYPE_DERIVE", DS_TYPE_TO_STRING(DS_TYPE_DERIVE)); + PyModule_AddStringConstant(module, "DS_TYPE_ABSOLUTE", DS_TYPE_TO_STRING(DS_TYPE_ABSOLUTE)); return 0; } @@ -1067,9 +1116,13 @@ static int cpy_config(oconfig_item_t *ci) { } else if (strcasecmp(item->key, "Encoding") == 0) { if (item->values_num != 1 || item->values[0].type != OCONFIG_TYPE_STRING) continue; +#ifdef IS_PY3K + NOTICE("python: \"Encoding\" was used in the config file but Python3 was used, which does not support changing encodings. Ignoring this."); +#else /* Why is this even necessary? And undocumented? */ if (PyUnicode_SetDefaultEncoding(item->values[0].value.string)) cpy_log_exception("setting default encoding"); +#endif } else if (strcasecmp(item->key, "LogTraces") == 0) { if (item->values_num != 1 || item->values[0].type != OCONFIG_TYPE_BOOLEAN) continue; @@ -1103,8 +1156,8 @@ static int cpy_config(oconfig_item_t *ci) { cpy_log_exception("python initialization"); continue; } - if (PyList_Append(sys_path, dir_object) != 0) { - ERROR("python plugin: Unable to append \"%s\" to " + if (PyList_Insert(sys_path, 0, dir_object) != 0) { + ERROR("python plugin: Unable to prepend \"%s\" to " "python module path.", dir); cpy_log_exception("python initialization"); }