postgresql: remove depricated lib (#56641)

lib/ansible/module_utils/postgres.py

@@ -40,20 +40,6 @@ from ansible.module_utils.six import iteritems
 from distutils.version import LooseVersion
 
 
-class LibraryError(Exception):
-    pass
-
-
-def ensure_libs(sslrootcert=None):
-    if not HAS_PSYCOPG2:
-        raise LibraryError('psycopg2 is not installed. we need psycopg2.')
-    if sslrootcert and psycopg2.__version__ < '2.4.3':
-        raise LibraryError('psycopg2 must be at least 2.4.3 in order to use the ca_cert parameter')
-
-    # no problems
-    return None
-
-
 def postgres_common_argument_spec():
     """
     Return a dictionary with connection options.

lib/ansible/modules/database/postgresql/postgresql_db.py

@@ -163,18 +163,16 @@ import pipes
 import subprocess
 import traceback
 
-PSYCOPG2_IMP_ERR = None
 try:
     import psycopg2
     import psycopg2.extras
 except ImportError:
-    PSYCOPG2_IMP_ERR = traceback.format_exc()
     HAS_PSYCOPG2 = False
 else:
     HAS_PSYCOPG2 = True
 
 import ansible.module_utils.postgres as pgutils
-from ansible.module_utils.basic import AnsibleModule, missing_required_lib
+from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.database import SQLParseError, pg_quote_identifier
 from ansible.module_utils.six import iteritems
 from ansible.module_utils._text import to_native
@@ -493,8 +491,8 @@ def main():
 
     raw_connection = state in ("dump", "restore")
 
-    if not HAS_PSYCOPG2 and not raw_connection:
-        module.fail_json(msg=missing_required_lib('psycopg2'), exception=PSYCOPG2_IMP_ERR)
+    if not raw_connection:
+        pgutils.ensure_required_libs(module)
 
     # To use defaults values, keyword arguments must be absent, so
     # check which values are empty and don't include in the **kw
@@ -522,7 +520,6 @@ def main():
 
     if not raw_connection:
         try:
-            pgutils.ensure_libs(sslrootcert=module.params.get('ca_cert'))
             db_connection = psycopg2.connect(database=maintenance_db, **kw)
 
             # Enable autocommit so we can create databases

test/units/module_utils/test_postgresql.py

@@ -1,81 +0,0 @@
-# Copyright (c) 2017 Ansible Project
-# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
-
-import sys
-
-from units.compat import unittest
-from units.compat.mock import patch, MagicMock
-
-from ansible.module_utils.six.moves import builtins
-from ansible.module_utils._text import to_native
-
-
-import pprint
-
-realimport = builtins.__import__
-
-
-class TestPostgres(unittest.TestCase):
-    def clear_modules(self, mods):
-        for mod in mods:
-            if mod in sys.modules:
-                del sys.modules[mod]
-
-    def test_import(self):
-        # this import makes dependency analysis work so the tests will run when the module_utils change
-        from ansible.module_utils.postgres import HAS_PSYCOPG2
-
-        assert HAS_PSYCOPG2 is not None
-
-    @patch.object(builtins, '__import__')
-    def test_postgres_pg2_missing_ensure_libs(self, mock_import):
-        def _mock_import(name, *args, **kwargs):
-            if name == 'psycopg2':
-                raise ImportError
-            return realimport(name, *args, **kwargs)
-
-        self.clear_modules(['psycopg2', 'ansible.module_utils.postgres'])
-        mock_import.side_effect = _mock_import
-        mod = builtins.__import__('ansible.module_utils.postgres')
-
-        self.assertFalse(mod.module_utils.postgres.HAS_PSYCOPG2)
-
-        with self.assertRaises(mod.module_utils.postgres.LibraryError) as context:
-            mod.module_utils.postgres.ensure_libs(sslrootcert=None)
-        self.assertIn('psycopg2 is not installed', to_native(context.exception))
-
-    @patch.object(builtins, '__import__')
-    def test_postgres_pg2_found_ensure_libs(self, mock_import):
-        def _mock_import(name, *args, **kwargs):
-            if 'psycopg2' in name:
-                return MagicMock()
-            return realimport(name, *args, **kwargs)
-
-        self.clear_modules(['psycopg2', 'ansible.module_utils.postgres'])
-        mock_import.side_effect = _mock_import
-        mod = builtins.__import__('ansible.module_utils.postgres')
-
-        self.assertTrue(mod.module_utils.postgres.HAS_PSYCOPG2)
-
-        ensure_ret = mod.module_utils.postgres.ensure_libs(sslrootcert=None)
-        self.assertFalse(ensure_ret)
-        pprint.pprint(ensure_ret)
-
-    @patch.object(builtins, '__import__')
-    def test_postgres_pg2_found_ensure_libs_old_version(self, mock_import):
-        def _mock_import(name, *args, **kwargs):
-            if 'psycopg2' in name:
-                m = MagicMock()
-                m.__version__ = '2.4.1'
-                return m
-            return realimport(name, *args, **kwargs)
-
-        self.clear_modules(['psycopg2', 'ansible.module_utils.postgres'])
-        mock_import.side_effect = _mock_import
-        mod = builtins.__import__('ansible.module_utils.postgres')
-
-        self.assertTrue(mod.module_utils.postgres.HAS_PSYCOPG2)
-
-        with self.assertRaises(mod.module_utils.postgres.LibraryError) as context:
-            mod.module_utils.postgres.ensure_libs(sslrootcert='yes')
-        self.assertIn('psycopg2 must be at least 2.4.3 in order to use', to_native(context.exception))