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import datetime
import os
import shutil
import unittest
from unittest.mock import Mock, patch, PropertyMock
import urllib3
import patroni.psycopg as psycopg
from patroni.dcs import Leader, Member
from patroni.postgresql import Postgresql
from patroni.postgresql.config import ConfigHandler
from patroni.postgresql.misc import PostgresqlState
from patroni.postgresql.mpp import get_mpp
from patroni.utils import RetryFailedError, tzutc
class SleepException(Exception):
pass
mock_available_gucs = PropertyMock(return_value={
'cluster_name', 'constraint_exclusion', 'force_parallel_mode', 'hot_standby', 'listen_addresses', 'max_connections',
'max_locks_per_transaction', 'max_prepared_transactions', 'max_replication_slots', 'max_stack_depth',
'max_wal_senders', 'max_worker_processes', 'port', 'search_path', 'shared_preload_libraries',
'stats_temp_directory', 'synchronous_standby_names', 'track_commit_timestamp', 'unix_socket_directories',
'vacuum_cost_delay', 'vacuum_cost_limit', 'wal_keep_size', 'wal_level', 'wal_log_hints', 'zero_damaged_pages',
'autovacuum', 'wal_segment_size', 'wal_block_size', 'shared_buffers', 'wal_buffers', 'fork_specific_param',
})
GET_PG_SETTINGS_RESULT = [
('wal_segment_size', '2048', '8kB', 'integer', 'internal'),
('wal_block_size', '8192', None, 'integer', 'internal'),
('shared_buffers', '16384', '8kB', 'integer', 'postmaster'),
('wal_buffers', '-1', '8kB', 'integer', 'postmaster'),
('max_connections', '100', None, 'integer', 'postmaster'),
('max_prepared_transactions', '200', None, 'integer', 'postmaster'),
('max_worker_processes', '8', None, 'integer', 'postmaster'),
('max_locks_per_transaction', '64', None, 'integer', 'postmaster'),
('max_wal_senders', '5', None, 'integer', 'postmaster'),
('search_path', 'public', None, 'string', 'user'),
('port', '5432', None, 'integer', 'postmaster'),
('listen_addresses', '127.0.0.2, 127.0.0.3', None, 'string', 'postmaster'),
('autovacuum', 'on', None, 'bool', 'sighup'),
('unix_socket_directories', '/tmp', None, 'string', 'postmaster'),
('shared_preload_libraries', 'citus', None, 'string', 'postmaster'),
('wal_keep_size', '128', 'MB', 'integer', 'sighup'),
('cluster_name', 'batman', None, 'string', 'postmaster'),
('vacuum_cost_delay', '200', 'ms', 'real', 'user'),
('vacuum_cost_limit', '-1', None, 'integer', 'user'),
('max_stack_depth', '2048', 'kB', 'integer', 'superuser'),
('constraint_exclusion', '', None, 'enum', 'user'),
('force_parallel_mode', '1', None, 'enum', 'user'),
('zero_damaged_pages', 'off', None, 'bool', 'superuser'),
('stats_temp_directory', '/tmp', None, 'string', 'sighup'),
('track_commit_timestamp', 'off', None, 'bool', 'postmaster'),
('wal_log_hints', 'on', None, 'bool', 'postmaster'),
('hot_standby', 'on', None, 'bool', 'postmaster'),
('max_replication_slots', '5', None, 'integer', 'postmaster'),
('wal_level', 'logical', None, 'enum', 'postmaster'),
]
class MockResponse(object):
def __init__(self, status_code=200):
self.status_code = status_code
self.headers = {'content-type': 'json', 'lsn': 100}
self.content = '{}'
self.reason = 'Not Found'
@property
def data(self):
return self.content.encode('utf-8')
@property
def status(self):
return self.status_code
@staticmethod
def getheader(*args):
return ''
def requests_get(url, method='GET', endpoint=None, data='', **kwargs):
members = '[{"id":14855829450254237642,"peerURLs":["http://localhost:2380","http://localhost:7001"],' +\
'"name":"default","clientURLs":["http://localhost:2379","http://localhost:4001"]}]'
response = MockResponse()
if endpoint == 'failsafe':
response.content = 'Accepted'
elif url.startswith('http://local'):
raise urllib3.exceptions.HTTPError()
elif ':8011/patroni' in url:
response.content = '{"role": "replica", "wal": {"received_location": 0}, "tags": {}}'
elif url.endswith('/members'):
response.content = '[{}]' if url.startswith('http://error') else members
elif url.startswith('http://exhibitor'):
response.content = '{"servers":["127.0.0.1","127.0.0.2","127.0.0.3"],"port":2181}'
elif url.endswith(':8011/reinitialize'):
if ' false}' in data:
response.status_code = 503
response.content = 'restarting after failure already in progress'
else:
response.status_code = 404
return response
class MockPostmaster(object):
def __init__(self, pid=1):
self.is_running = Mock(return_value=self)
self.wait_for_user_backends_to_close = Mock()
self.signal_stop = Mock(return_value=None)
self.wait = Mock()
self.signal_kill = Mock(return_value=False)
class MockCursor(object):
def __init__(self, connection):
self.connection = connection
self.closed = False
self.rowcount = 0
self.results = []
self.description = [Mock()]
def execute(self, sql, *params):
if isinstance(sql, bytes):
sql = sql.decode('utf-8')
if sql.startswith('blabla'):
raise psycopg.ProgrammingError()
elif sql == 'CHECKPOINT' or sql.startswith('SELECT pg_catalog.pg_create_'):
raise psycopg.OperationalError()
elif sql.startswith('RetryFailedError'):
raise RetryFailedError('retry')
elif sql.startswith('SELECT slot_name, catalog_xmin'):
self.results = [('postgresql0', 100), ('ls', 100)]
elif sql.startswith('SELECT slot_name, slot_type, datname, plugin, catalog_xmin'):
self.results = [('ls', 'logical', 'a', 'b', 100, 500, b'123456')]
elif sql.startswith('SELECT slot_name'):
self.results = [('blabla', 'physical', 1, 12345),
('foobar', 'physical', 1, 12345),
('ls', 'logical', 1, 499, 'b', 'a', 5, 100, 500)]
elif sql.startswith('WITH slots AS (SELECT slot_name, active'):
self.results = [(False, True)] if self.rowcount == 1 else []
elif sql.startswith('SELECT CASE WHEN pg_catalog.pg_is_in_recovery()'):
self.results = [(1, 2, 1, 0, False, 1, 1, 1, None, None, 'streaming', '',
[{"slot_name": "ls", "confirmed_flush_lsn": 12345, "restart_lsn": 12344}],
'on', 'n1', None)]
elif sql.startswith('SELECT pg_catalog.pg_is_in_recovery()'):
self.results = [(False, 2)]
elif sql.startswith('SELECT pg_catalog.pg_postmaster_start_time'):
self.results = [(datetime.datetime.now(tzutc),)]
elif sql.endswith('AND pending_restart'):
self.results = []
elif sql.startswith('SELECT name, pg_catalog.current_setting(name) FROM pg_catalog.pg_settings'):
self.results = [('data_directory', 'data'),
('hba_file', os.path.join('data', 'pg_hba.conf')),
('ident_file', os.path.join('data', 'pg_ident.conf')),
('max_connections', 42),
('max_locks_per_transaction', 73),
('max_prepared_transactions', 0),
('max_replication_slots', 21),
('max_wal_senders', 37),
('track_commit_timestamp', 'off'),
('wal_level', 'replica'),
('listen_addresses', '6.6.6.6'),
('port', 1984),
('archive_command', 'my archive command'),
('cluster_name', 'my_cluster')]
elif sql.startswith('SELECT name, setting'):
self.results = GET_PG_SETTINGS_RESULT
elif sql.startswith('IDENTIFY_SYSTEM'):
self.results = [('1', 3, '0/402EEC0', '')]
elif sql.startswith('TIMELINE_HISTORY '):
self.results = [('', b'x\t0/40159C0\tno recovery target specified\n\n'
b'1\t0/40159C0\tno recovery target specified\n\n'
b'2\t0/402DD98\tno recovery target specified\n\n'
b'3\t0/403DD98\tno recovery target specified\n')]
elif sql.startswith('SELECT pg_catalog.citus_add_node'):
self.results = [(2,)]
elif sql.startswith('SELECT groupid, nodename'):
self.results = [(0, 'host1', 5432, 'primary', 1),
(0, '127.0.0.1', 5436, 'secondary', 2),
(1, 'host4', 5432, 'primary', 3),
(1, '127.0.0.1', 5437, 'secondary', 4),
(1, '127.0.0.1', 5438, 'secondary', 5)]
else:
self.results = [(None, None, None, None, None, None, None, None, None, None)]
self.rowcount = len(self.results)
def fetchone(self):
return self.results[0]
def fetchall(self):
return self.results
def __iter__(self):
for i in self.results:
yield i
def __enter__(self):
return self
def __exit__(self, *args):
pass
class MockConnect(object):
server_version = 99999
autocommit = False
closed = 0
def get_parameter_status(self, param_name):
if param_name == 'is_superuser':
return 'on'
return '0'
def cursor(self):
return MockCursor(self)
def __enter__(self):
return self
def __exit__(self, *args):
pass
@staticmethod
def close():
pass
def psycopg_connect(*args, **kwargs):
return MockConnect()
class PostgresInit(unittest.TestCase):
_PARAMETERS = {'wal_level': 'hot_standby', 'max_replication_slots': 5, 'f.oo': 'bar',
'search_path': 'public', 'hot_standby': 'on', 'max_wal_senders': 5,
'wal_keep_segments': 8, 'wal_log_hints': 'on', 'max_locks_per_transaction': 64,
'max_worker_processes': 8, 'max_connections': 100, 'max_prepared_transactions': 200,
'track_commit_timestamp': 'off', 'unix_socket_directories': '/tmp',
'trigger_file': 'bla', 'stats_temp_directory': '/tmp', 'zero_damaged_pages': 'off',
'force_parallel_mode': '1', 'constraint_exclusion': '',
'max_stack_depth': 2048, 'vacuum_cost_limit': -1, 'vacuum_cost_delay': 200}
@patch('patroni.psycopg._connect', psycopg_connect)
@patch('patroni.postgresql.CallbackExecutor', Mock())
@patch.object(ConfigHandler, 'write_postgresql_conf', Mock())
@patch.object(ConfigHandler, 'replace_pg_hba', Mock())
@patch.object(ConfigHandler, 'replace_pg_ident', Mock())
@patch.object(Postgresql, 'get_postgres_role_from_data_directory', Mock(return_value='primary'))
def setUp(self):
self._tmp_dir = 'data'
data_dir = os.path.join(self._tmp_dir, 'test0')
config = {'name': 'postgresql0', 'scope': 'batman', 'data_dir': data_dir,
'config_dir': data_dir, 'retry_timeout': 10,
'krbsrvname': 'postgres', 'pgpass': os.path.join(data_dir, 'pgpass0'),
'listen': '127.0.0.2, 127.0.0.3:5432',
'connect_address': '127.0.0.2:5432', 'proxy_address': '127.0.0.2:5433',
'authentication': {'superuser': {'username': 'foo', 'password': 'test'},
'replication': {'username': '', 'password': 'rep-pass'},
'rewind': {'username': 'rewind', 'password': 'test'}},
'remove_data_directory_on_rewind_failure': True,
'use_pg_rewind': True, 'pg_ctl_timeout': 'bla', 'use_unix_socket': True,
'parameters': self._PARAMETERS,
'recovery_conf': {'foo': 'bar'},
'pg_hba': ['host all all 0.0.0.0/0 md5'],
'pg_ident': ['krb realm postgres'],
'callbacks': {'on_start': 'true', 'on_stop': 'true', 'on_reload': 'true',
'on_restart': 'true', 'on_role_change': 'true'},
'citus': {'group': 0, 'database': 'citus'}}
self.p = Postgresql(config, get_mpp(config))
class BaseTestPostgresql(PostgresInit):
@patch('time.sleep', Mock())
def setUp(self):
super(BaseTestPostgresql, self).setUp()
if not os.path.exists(self.p.data_dir):
os.makedirs(self.p.data_dir)
self.leadermem = Member(0, 'leader', 28, {'xlog_location': 100, 'state': PostgresqlState.RUNNING,
'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5435/postgres'})
self.leader = Leader(-1, 28, self.leadermem)
self.other = Member(0, 'test-1', 28, {'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5433/postgres',
'state': PostgresqlState.RUNNING, 'tags': {'replicatefrom': 'leader'}})
self.me = Member(0, 'test0', 28, {
'state': PostgresqlState.RUNNING, 'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5434/postgres'})
def tearDown(self):
if os.path.exists(self.p.data_dir):
shutil.rmtree(self.p.data_dir)
if not os.listdir(self._tmp_dir):
shutil.rmtree(self._tmp_dir)
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