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Add libpq version discovery
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@ -197,6 +197,16 @@ functionalities defined by the |DBAPI|_.
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.. versionadded:: 2.2.0
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.. function:: libpq_version()
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Query actual ``libpq`` version loaded.
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This function throws `NotSupportedError` if it was compiled with
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``libpq < 9.1``.
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.. seealso:: libpq docs for `PQlibVersion()`__
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.. __: http://www.postgresql.org/docs/current/static/libpq-misc.html#LIBPQ-PQLIBVERSION
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.. _sql-adaptation-objects:
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@ -109,6 +109,12 @@ The module interface respects the standard defined in the |DBAPI|_.
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by the interface. For `psycopg2` is ``pyformat``. See also
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:ref:`query-parameters`.
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.. data:: __libpq_version__
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Integer contant containing the version of ``libpq`` this `psycopg2`
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module was compiled with. If this value is ``>= 90100`` then you
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may query for the actually loaded version of libpq using
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`~psycopg2.extensions.libpq_version()`.
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.. index::
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@ -57,7 +57,7 @@ from psycopg2._psycopg import IntegrityError, InterfaceError, InternalError
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from psycopg2._psycopg import NotSupportedError, OperationalError
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from psycopg2._psycopg import _connect, apilevel, threadsafety, paramstyle
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from psycopg2._psycopg import __version__
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from psycopg2._psycopg import __version__, __libpq_version__
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from psycopg2 import tz
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@ -56,7 +56,7 @@ try:
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except ImportError:
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pass
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from psycopg2._psycopg import adapt, adapters, encodings, connection, cursor, lobject, Xid
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from psycopg2._psycopg import adapt, adapters, encodings, connection, cursor, lobject, Xid, libpq_version
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from psycopg2._psycopg import string_types, binary_types, new_type, new_array_type, register_type
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from psycopg2._psycopg import ISQLQuote, Notify, Diagnostics, Column
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@ -300,6 +300,19 @@ exit:
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return rv;
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}
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#define psyco_libpq_version_doc "Query actual libpq version loaded."
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static PyObject*
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psyco_libpq_version(PyObject *self)
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{
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#if PG_VERSION_HEX >= 0x090100
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return PyInt_FromLong(PQlibVersion());
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#else
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PyErr_SetString(NotSupportedError, "version discovery is not supported in libpq < 9.1");
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return NULL;
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#endif
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}
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/* psyco_encodings_fill
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Fill the module's postgresql<->python encoding table */
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@ -704,6 +717,8 @@ static PyMethodDef psycopgMethods[] = {
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METH_VARARGS|METH_KEYWORDS, typecast_from_python_doc},
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{"new_array_type", (PyCFunction)typecast_array_from_python,
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METH_VARARGS|METH_KEYWORDS, typecast_array_from_python_doc},
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{"libpq_version", (PyCFunction)psyco_libpq_version,
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METH_NOARGS, psyco_libpq_version_doc},
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{"Date", (PyCFunction)psyco_Date,
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METH_VARARGS, psyco_Date_doc},
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@ -899,6 +914,7 @@ INIT_MODULE(_psycopg)(void)
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/* set some module's parameters */
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PyModule_AddStringConstant(module, "__version__", PSYCOPG_VERSION);
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PyModule_AddStringConstant(module, "__doc__", "psycopg PostgreSQL driver");
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PyModule_AddIntConstant(module, "__libpq_version__", PG_VERSION_NUM);
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PyModule_AddObject(module, "apilevel", Text_FromUTF8(APILEVEL));
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PyModule_AddObject(module, "threadsafety", PyInt_FromLong(THREADSAFETY));
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PyModule_AddObject(module, "paramstyle", Text_FromUTF8(PARAMSTYLE));
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3
setup.py
3
setup.py
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@ -416,6 +416,9 @@ class psycopg_build_ext(build_ext):
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% pgversion)
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sys.exit(1)
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define_macros.append(("PG_VERSION_NUM", "%d%02d%02d" %
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(pgmajor, pgminor, pgpatch)))
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define_macros.append(("PG_VERSION_HEX", "0x%02X%02X%02X" %
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(pgmajor, pgminor, pgpatch)))
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@ -236,6 +236,43 @@ def skip_after_postgres(*ver):
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return skip_after_postgres__
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return skip_after_postgres_
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def libpq_version():
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import psycopg2
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v = psycopg2.__libpq_version__
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if v >= 90100:
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v = psycopg2.extensions.libpq_version()
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return v
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def skip_before_libpq(*ver):
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"""Skip a test if libpq we're linked to is older than a certain version."""
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ver = ver + (0,) * (3 - len(ver))
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def skip_before_libpq_(f):
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@wraps(f)
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def skip_before_libpq__(self):
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v = libpq_version()
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if v < int("%d%02d%02d" % ver):
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return self.skipTest("skipped because libpq %d" % v)
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else:
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return f(self)
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return skip_before_libpq__
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return skip_before_libpq_
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def skip_after_libpq(*ver):
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"""Skip a test if libpq we're linked to is newer than a certain version."""
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ver = ver + (0,) * (3 - len(ver))
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def skip_after_libpq_(f):
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@wraps(f)
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def skip_after_libpq__(self):
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v = libpq_version()
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if v >= int("%d%02d%02d" % ver):
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return self.skipTest("skipped because libpq %s" % v)
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else:
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return f(self)
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return skip_after_libpq__
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return skip_after_libpq_
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def skip_before_python(*ver):
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"""Skip a test on Python before a certain version."""
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def skip_before_python_(f):
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