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/* replication_connection_type.c - python interface to replication connection objects
*
* Copyright (C) 2015-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
* Copyright (C) 2020-2021 The Psycopg Team
*
* This file is part of psycopg.
*
* psycopg2 is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* In addition, as a special exception, the copyright holders give
* permission to link this program with the OpenSSL library (or with
* modified versions of OpenSSL that use the same license as OpenSSL),
* and distribute linked combinations including the two.
*
* You must obey the GNU Lesser General Public License in all respects for
* all of the code used other than OpenSSL.
*
* psycopg2 is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*/
#define PSYCOPG_MODULE
#include "psycopg/psycopg.h"
#include "psycopg/replication_connection.h"
#include "psycopg/replication_message.h"
#include "psycopg/green.h"
#include "psycopg/pqpath.h"
#include <string.h>
#include <stdlib.h>
#define psyco_repl_conn_type_doc \
"replication_type -- the replication connection type"
static PyObject *
psyco_repl_conn_get_type(replicationConnectionObject *self)
{
return PyInt_FromLong(self->type);
}
static int
replicationConnection_init(replicationConnectionObject *self,
PyObject *args, PyObject *kwargs)
{
PyObject *dsn = NULL, *async = Py_False,
*item = NULL, *extras = NULL, *cursor = NULL,
*newdsn = NULL, *newargs = NULL, *dsnopts = NULL;
int ret = -1;
long int replication_type;
/* 'replication_type' is not actually optional, but there's no
good way to put it before 'async' in the list */
static char *kwlist[] = {"dsn", "async", "replication_type", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Ol", kwlist,
&dsn, &async, &replication_type)) {
return ret;
}
/*
We have to call make_dsn() to add replication-specific
connection parameters, because the DSN might be an URI (if there
were no keyword arguments to connect() it is passed unchanged).
*/
if (!(dsnopts = PyDict_New())) { return ret; }
/* all the nice stuff is located in python-level ReplicationCursor class */
if (!(extras = PyImport_ImportModule("psycopg2.extras"))) { goto exit; }
if (!(cursor = PyObject_GetAttrString(extras, "ReplicationCursor"))) { goto exit; }
if (replication_type == REPLICATION_PHYSICAL) {
self->type = REPLICATION_PHYSICAL;
#define SET_ITEM(k, v) \
if (!(item = Text_FromUTF8(#v))) { goto exit; } \
if (PyDict_SetItemString(dsnopts, #k, item) != 0) { goto exit; } \
Py_DECREF(item); \
item = NULL;
SET_ITEM(replication, true);
SET_ITEM(dbname, replication); /* required for .pgpass lookup */
} else if (replication_type == REPLICATION_LOGICAL) {
self->type = REPLICATION_LOGICAL;
SET_ITEM(replication, database);
#undef SET_ITEM
} else {
PyErr_SetString(PyExc_TypeError,
"replication_type must be either "
"REPLICATION_PHYSICAL or REPLICATION_LOGICAL");
goto exit;
}
if (!(newdsn = psyco_make_dsn(dsn, dsnopts))) { goto exit; }
if (!(newargs = PyTuple_Pack(2, newdsn, async))) { goto exit; }
/* only attempt the connection once we've handled all possible errors */
if ((ret = connectionType.tp_init((PyObject *)self, newargs, NULL)) < 0) {
goto exit;
}
self->conn.autocommit = 1;
Py_INCREF(cursor);
self->conn.cursor_factory = cursor;
exit:
Py_XDECREF(item);
Py_XDECREF(extras);
Py_XDECREF(cursor);
Py_XDECREF(newdsn);
Py_XDECREF(newargs);
Py_XDECREF(dsnopts);
return ret;
}
static PyObject *
replicationConnection_repr(replicationConnectionObject *self)
{
return PyString_FromFormat(
"<ReplicationConnection object at %p; dsn: '%s', closed: %ld>",
self, self->conn.dsn, self->conn.closed);
}
static int
replicationConnectionType_traverse(PyObject *self, visitproc visit, void *arg)
{
return connectionType.tp_traverse(self, visit, arg);
}
/* object calculated member list */
static struct PyGetSetDef replicationConnectionObject_getsets[] = {
/* override to prevent user tweaking these: */
{ "autocommit", NULL, NULL, NULL },
{ "isolation_level", NULL, NULL, NULL },
{ "set_session", NULL, NULL, NULL },
{ "set_isolation_level", NULL, NULL, NULL },
{ "reset", NULL, NULL, NULL },
/* an actual getter */
{ "replication_type",
(getter)psyco_repl_conn_get_type, NULL,
psyco_repl_conn_type_doc, NULL },
{NULL}
};
/* object type */
#define replicationConnectionType_doc \
"A replication connection."
PyTypeObject replicationConnectionType = {
PyVarObject_HEAD_INIT(NULL, 0)
"psycopg2.extensions.ReplicationConnection",
sizeof(replicationConnectionObject), 0,
0, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
(reprfunc)replicationConnection_repr, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
0, /*tp_call*/
(reprfunc)replicationConnection_repr, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_ITER |
Py_TPFLAGS_HAVE_GC, /*tp_flags*/
replicationConnectionType_doc, /*tp_doc*/
replicationConnectionType_traverse, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
0, /*tp_methods*/
0, /*tp_members*/
replicationConnectionObject_getsets, /*tp_getset*/
&connectionType, /*tp_base*/
0, /*tp_dict*/
0, /*tp_descr_get*/
0, /*tp_descr_set*/
0, /*tp_dictoffset*/
(initproc)replicationConnection_init, /*tp_init*/
0, /*tp_alloc*/
0, /*tp_new*/
};
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