mirror of
https://gitlab.isc.org/isc-projects/kea
synced 2025-09-08 09:55:22 +00:00
ba3695664a
in accordance with the previous cleanup for zone_finder. "iterator" is too generic and should have been renamed. now is probably a good opportunity.
243 lines
8.6 KiB
C++
243 lines
8.6 KiB
C++
// Copyright (C) 2011 Internet Systems Consortium, Inc. ("ISC")
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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// PERFORMANCE OF THIS SOFTWARE.
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// Enable this if you use s# variants with PyArg_ParseTuple(), see
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// http://docs.python.org/py3k/c-api/arg.html#strings-and-buffers
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//#define PY_SSIZE_T_CLEAN
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// Python.h needs to be placed at the head of the program file, see:
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// http://docs.python.org/py3k/extending/extending.html#a-simple-example
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#include <Python.h>
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#include <util/python/pycppwrapper_util.h>
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#include <datasrc/client.h>
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#include <datasrc/database.h>
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#include <datasrc/sqlite3_accessor.h>
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#include <datasrc/zone_iterator.h>
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#include <dns/python/name_python.h>
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#include <dns/python/rrset_python.h>
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#include "datasrc.h"
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#include "iterator_python.h"
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#include "iterator_inc.cc"
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using namespace std;
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using namespace isc::util::python;
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using namespace isc::dns::python;
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using namespace isc::datasrc;
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using namespace isc::datasrc::python;
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namespace {
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// The s_* Class simply covers one instantiation of the object
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class s_ZoneIterator : public PyObject {
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public:
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s_ZoneIterator() : cppobj(ZoneIteratorPtr()), base_obj(NULL) {};
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ZoneIteratorPtr cppobj;
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// This is a reference to a base object; if the object of this class
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// depends on another object to be in scope during its lifetime,
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// we use INCREF the base object upon creation, and DECREF it at
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// the end of the destructor
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// This is an optional argument to createXXX(). If NULL, it is ignored.
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PyObject* base_obj;
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};
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// Shortcut type which would be convenient for adding class variables safely.
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typedef CPPPyObjectContainer<s_ZoneIterator, ZoneIterator>
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ZoneIteratorContainer;
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// General creation and destruction
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int
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ZoneIterator_init(s_ZoneIterator* self, PyObject* args) {
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// can't be called directly
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PyErr_SetString(PyExc_TypeError,
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"ZoneIterator cannot be constructed directly");
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return (-1);
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}
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void
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ZoneIterator_destroy(s_ZoneIterator* const self) {
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// cppobj is a shared ptr, but to make sure things are not destroyed in
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// the wrong order, we reset it here.
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self->cppobj.reset();
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if (self->base_obj != NULL) {
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Py_DECREF(self->base_obj);
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}
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Py_TYPE(self)->tp_free(self);
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}
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//
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// We declare the functions here, the definitions are below
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// the type definition of the object, since both can use the other
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//
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PyObject*
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ZoneIterator_getNextRRset(PyObject* po_self, PyObject*) {
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s_ZoneIterator* self = static_cast<s_ZoneIterator*>(po_self);
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if (!self->cppobj) {
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PyErr_SetString(getDataSourceException("Error"),
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"get_next_rrset() called past end of iterator");
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return (NULL);
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}
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try {
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isc::dns::ConstRRsetPtr rrset = self->cppobj->getNextRRset();
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if (!rrset) {
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Py_RETURN_NONE;
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}
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return (createRRsetObject(*rrset));
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} catch (const isc::Exception& isce) {
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// isc::Unexpected is thrown when we call getNextRRset() when we are
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// already done iterating ('iterating past end')
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// We could also simply return None again
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PyErr_SetString(getDataSourceException("Error"), isce.what());
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return (NULL);
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} catch (const std::exception& exc) {
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PyErr_SetString(getDataSourceException("Error"), exc.what());
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return (NULL);
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} catch (...) {
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PyErr_SetString(getDataSourceException("Error"),
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"Unexpected exception");
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return (NULL);
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}
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}
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PyObject*
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ZoneIterator_iter(PyObject *self) {
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Py_INCREF(self);
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return (self);
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}
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PyObject*
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ZoneIterator_next(PyObject* self) {
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PyObject *result = ZoneIterator_getNextRRset(self, NULL);
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// iter_next must return NULL without error instead of Py_None
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if (result == Py_None) {
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Py_DECREF(result);
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return (NULL);
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} else {
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return (result);
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}
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}
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PyObject*
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ZoneIterator_getSOA(PyObject* po_self, PyObject*) {
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s_ZoneIterator* self = static_cast<s_ZoneIterator*>(po_self);
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try {
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isc::dns::ConstRRsetPtr rrset = self->cppobj->getSOA();
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if (!rrset) {
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Py_RETURN_NONE;
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}
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return (createRRsetObject(*rrset));
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} catch (const isc::Exception& isce) {
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// isc::Unexpected is thrown when we call getNextRRset() when we are
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// already done iterating ('iterating past end')
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// We could also simply return None again
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PyErr_SetString(getDataSourceException("Error"), isce.what());
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return (NULL);
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} catch (const std::exception& exc) {
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PyErr_SetString(getDataSourceException("Error"), exc.what());
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return (NULL);
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} catch (...) {
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PyErr_SetString(getDataSourceException("Error"),
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"Unexpected exception");
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return (NULL);
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}
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}
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PyMethodDef ZoneIterator_methods[] = {
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{ "get_next_rrset", ZoneIterator_getNextRRset, METH_NOARGS,
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ZoneIterator_getNextRRset_doc },
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{ "get_soa", ZoneIterator_getSOA, METH_NOARGS, ZoneIterator_getSOA_doc },
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{ NULL, NULL, 0, NULL }
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};
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} // end of unnamed namespace
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namespace isc {
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namespace datasrc {
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namespace python {
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PyTypeObject zoneiterator_type = {
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PyVarObject_HEAD_INIT(NULL, 0)
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"datasrc.ZoneIterator",
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sizeof(s_ZoneIterator), // tp_basicsize
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0, // tp_itemsize
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reinterpret_cast<destructor>(ZoneIterator_destroy),// tp_dealloc
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NULL, // tp_print
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NULL, // tp_getattr
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NULL, // tp_setattr
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NULL, // tp_reserved
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NULL, // tp_repr
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NULL, // tp_as_number
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NULL, // tp_as_sequence
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NULL, // tp_as_mapping
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NULL, // tp_hash
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NULL, // tp_call
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NULL, // tp_str
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NULL, // tp_getattro
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NULL, // tp_setattro
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NULL, // tp_as_buffer
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Py_TPFLAGS_DEFAULT, // tp_flags
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ZoneIterator_doc,
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NULL, // tp_traverse
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NULL, // tp_clear
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NULL, // tp_richcompare
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0, // tp_weaklistoffset
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ZoneIterator_iter, // tp_iter
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ZoneIterator_next, // tp_iternext
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ZoneIterator_methods, // tp_methods
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NULL, // tp_members
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NULL, // tp_getset
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NULL, // tp_base
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NULL, // tp_dict
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NULL, // tp_descr_get
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NULL, // tp_descr_set
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0, // tp_dictoffset
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reinterpret_cast<initproc>(ZoneIterator_init),// tp_init
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NULL, // tp_alloc
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PyType_GenericNew, // tp_new
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NULL, // tp_free
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NULL, // tp_is_gc
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NULL, // tp_bases
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NULL, // tp_mro
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NULL, // tp_cache
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NULL, // tp_subclasses
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NULL, // tp_weaklist
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NULL, // tp_del
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0 // tp_version_tag
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};
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PyObject*
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createZoneIteratorObject(isc::datasrc::ZoneIteratorPtr source,
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PyObject* base_obj)
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{
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s_ZoneIterator* py_zi = static_cast<s_ZoneIterator*>(
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zoneiterator_type.tp_alloc(&zoneiterator_type, 0));
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if (py_zi != NULL) {
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py_zi->cppobj = source;
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py_zi->base_obj = base_obj;
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if (base_obj != NULL) {
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Py_INCREF(base_obj);
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}
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}
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return (py_zi);
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}
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} // namespace python
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} // namespace datasrc
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} // namespace isc
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