mirror of
https://github.com/outbackdingo/patroni.git
synced 2026-08-25 14:53:37 +00:00
Alexander KukushkinandGitHub
c7173aadd7
Effectively, this PR consists of a few changes: 1. The easy part: In case of permanent logical slots are defined in the global configuration, Patroni on the primary will not only create them, but also periodically update DCS with the current values of `confirmed_flush_lsn` for all these slots. In order to reduce the number of interactions with DCS the new `/status` key was introduced. It will contain the json object with `optime` and `slots` keys. For backward compatibility the `/optime/leader` will be updated if there are members with old Patroni in the cluster. 2. The tricky part: On replicas that are eligible for a failover, Patroni creates the logical replication slot by copying the slot file from the primary and restarting the replica. In order to copy the slot file Patroni opens a connection to the primary with `rewind` or `superuser` credentials and calls `pg_read_binary_file()` function. When the logical slot already exists on the replica Patroni periodically calls `pg_replication_slot_advance()` function, which allows moving the slot forward. 3. Additional requirements: In order to ensure that primary doesn't cleanup tuples from pg_catalog that are required for logical decoding, Patroni enables `hot_standby_feedback` on replicas with logical slots and on cascading replicas if they are used for streaming by replicas with logical slots. 4. When logical slots are copied from to the replica there is a timeframe when it could be not safe to use them after promotion. Right now there is no protection from promoting such a replica. But, Patroni will show the warning with names of the slots that might be not safe to use. Compatibility. The `pg_replication_slot_advance()` function is only available starting from PostgreSQL 11. For older Postgres versions Patroni will refuse to create the logical slot on the primary. The old "permanent slots" feature, which creates logical slots right after promotion and before allowing connections, was removed. Close: https://github.com/zalando/patroni/issues/1749
716 lines
33 KiB
Python
716 lines
33 KiB
Python
import datetime
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import os
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import psutil
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import psycopg2
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import re
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import subprocess
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import time
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from mock import Mock, MagicMock, PropertyMock, patch, mock_open
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from patroni.async_executor import CriticalTask
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from patroni.dcs import Cluster, RemoteMember, SyncState
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from patroni.exceptions import PostgresConnectionException, PatroniException
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from patroni.postgresql import Postgresql, STATE_REJECT, STATE_NO_RESPONSE
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from patroni.postgresql.postmaster import PostmasterProcess
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from patroni.utils import RetryFailedError
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from six.moves import builtins
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from threading import Thread, current_thread
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from . import BaseTestPostgresql, MockCursor, MockPostmaster, psycopg2_connect
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mtime_ret = {}
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def mock_mtime(filename):
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if filename not in mtime_ret:
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mtime_ret[filename] = time.time()
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else:
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mtime_ret[filename] += 1
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return mtime_ret[filename]
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def pg_controldata_string(*args, **kwargs):
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return b"""
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pg_control version number: 942
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Catalog version number: 201509161
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Database system identifier: 6200971513092291716
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Database cluster state: shut down in recovery
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pg_control last modified: Fri Oct 2 10:57:06 2015
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Latest checkpoint location: 0/30000C8
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Prior checkpoint location: 0/2000060
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Latest checkpoint's REDO location: 0/3000090
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Latest checkpoint's REDO WAL file: 000000020000000000000003
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Latest checkpoint's TimeLineID: 2
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Latest checkpoint's PrevTimeLineID: 2
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Latest checkpoint's full_page_writes: on
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Latest checkpoint's NextXID: 0/943
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Latest checkpoint's NextOID: 24576
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Latest checkpoint's NextMultiXactId: 1
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Latest checkpoint's NextMultiOffset: 0
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Latest checkpoint's oldestXID: 931
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Latest checkpoint's oldestXID's DB: 1
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Latest checkpoint's oldestActiveXID: 943
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Latest checkpoint's oldestMultiXid: 1
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Latest checkpoint's oldestMulti's DB: 1
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Latest checkpoint's oldestCommitTs: 0
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Latest checkpoint's newestCommitTs: 0
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Time of latest checkpoint: Fri Oct 2 10:56:54 2015
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Fake LSN counter for unlogged rels: 0/1
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Minimum recovery ending location: 0/30241F8
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Min recovery ending loc's timeline: 2
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Backup start location: 0/0
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Backup end location: 0/0
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End-of-backup record required: no
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wal_level setting: hot_standby
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Current wal_log_hints setting: on
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Current max_connections setting: 100
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Current max_worker_processes setting: 8
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Current max_prepared_xacts setting: 0
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Current max_locks_per_xact setting: 64
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Current track_commit_timestamp setting: off
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Maximum data alignment: 8
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Database block size: 8192
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Blocks per segment of large relation: 131072
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WAL block size: 8192
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Bytes per WAL segment: 16777216
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Maximum length of identifiers: 64
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Maximum columns in an index: 32
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Maximum size of a TOAST chunk: 1996
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Size of a large-object chunk: 2048
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Date/time type storage: 64-bit integers
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Float4 argument passing: by value
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Float8 argument passing: by value
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Data page checksum version: 0
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"""
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@patch('subprocess.call', Mock(return_value=0))
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@patch('psycopg2.connect', psycopg2_connect)
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class TestPostgresql(BaseTestPostgresql):
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@patch('subprocess.call', Mock(return_value=0))
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@patch('os.rename', Mock())
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@patch('patroni.postgresql.CallbackExecutor', Mock())
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@patch.object(Postgresql, 'get_major_version', Mock(return_value=130000))
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@patch.object(Postgresql, 'is_running', Mock(return_value=True))
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def setUp(self):
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super(TestPostgresql, self).setUp()
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self.p.config.write_postgresql_conf()
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@patch('subprocess.Popen')
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@patch.object(Postgresql, 'wait_for_startup')
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@patch.object(Postgresql, 'wait_for_port_open')
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@patch.object(Postgresql, 'is_running')
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@patch.object(Postgresql, 'controldata', Mock())
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def test_start(self, mock_is_running, mock_wait_for_port_open, mock_wait_for_startup, mock_popen):
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mock_is_running.return_value = MockPostmaster()
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mock_wait_for_port_open.return_value = True
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mock_wait_for_startup.return_value = False
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mock_popen.return_value.stdout.readline.return_value = '123'
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self.assertTrue(self.p.start())
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mock_is_running.return_value = None
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mock_postmaster = MockPostmaster()
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with patch.object(PostmasterProcess, 'start', return_value=mock_postmaster):
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pg_conf = os.path.join(self.p.data_dir, 'postgresql.conf')
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open(pg_conf, 'w').close()
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self.assertFalse(self.p.start(task=CriticalTask()))
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with open(pg_conf) as f:
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lines = f.readlines()
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self.assertTrue("f.oo = 'bar'\n" in lines)
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mock_wait_for_startup.return_value = None
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self.assertFalse(self.p.start(10))
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self.assertIsNone(self.p.start())
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mock_wait_for_port_open.return_value = False
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self.assertFalse(self.p.start())
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task = CriticalTask()
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task.cancel()
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self.assertFalse(self.p.start(task=task))
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self.p.cancellable.cancel()
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self.assertFalse(self.p.start())
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with patch('patroni.postgresql.config.ConfigHandler.effective_configuration',
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PropertyMock(side_effect=Exception)):
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self.assertIsNone(self.p.start())
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@patch.object(Postgresql, 'pg_isready')
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@patch('patroni.postgresql.polling_loop', Mock(return_value=range(1)))
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def test_wait_for_port_open(self, mock_pg_isready):
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mock_pg_isready.return_value = STATE_NO_RESPONSE
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mock_postmaster = MockPostmaster(is_running=False)
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# No pid file and postmaster death
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self.assertFalse(self.p.wait_for_port_open(mock_postmaster, 1))
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mock_postmaster.is_running.return_value = True
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# timeout
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self.assertFalse(self.p.wait_for_port_open(mock_postmaster, 1))
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# pg_isready failure
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mock_pg_isready.return_value = 'garbage'
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self.assertTrue(self.p.wait_for_port_open(mock_postmaster, 1))
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# cancelled
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self.p.cancellable.cancel()
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self.assertFalse(self.p.wait_for_port_open(mock_postmaster, 1))
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@patch('time.sleep', Mock())
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@patch.object(Postgresql, 'is_running')
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@patch.object(Postgresql, '_wait_for_connection_close', Mock())
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def test_stop(self, mock_is_running):
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# Postmaster is not running
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mock_callback = Mock()
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mock_is_running.return_value = None
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self.assertTrue(self.p.stop(on_safepoint=mock_callback))
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mock_callback.assert_called()
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# Is running, stopped successfully
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mock_is_running.return_value = mock_postmaster = MockPostmaster()
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mock_callback.reset_mock()
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self.assertTrue(self.p.stop(on_safepoint=mock_callback))
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mock_callback.assert_called()
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mock_postmaster.signal_stop.assert_called()
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# Timed out waiting for fast shutdown triggers immediate shutdown
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mock_postmaster.wait.side_effect = [psutil.TimeoutExpired(30), psutil.TimeoutExpired(30), Mock()]
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mock_callback.reset_mock()
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self.assertTrue(self.p.stop(on_safepoint=mock_callback, stop_timeout=30))
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mock_callback.assert_called()
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mock_postmaster.signal_stop.assert_called()
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# Immediate shutdown succeeded
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mock_postmaster.wait.side_effect = [psutil.TimeoutExpired(30), Mock()]
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self.assertTrue(self.p.stop(on_safepoint=mock_callback, stop_timeout=30))
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# Stop signal failed
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mock_postmaster.signal_stop.return_value = False
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self.assertFalse(self.p.stop())
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# Stop signal failed to find process
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mock_postmaster.signal_stop.return_value = True
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mock_callback.reset_mock()
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self.assertTrue(self.p.stop(on_safepoint=mock_callback))
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mock_callback.assert_called()
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# Fast shutdown is timed out but when immediate postmaster is already gone
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mock_postmaster.wait.side_effect = [psutil.TimeoutExpired(30), Mock()]
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mock_postmaster.signal_stop.side_effect = [None, True]
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self.assertTrue(self.p.stop(on_safepoint=mock_callback, stop_timeout=30))
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def test_restart(self):
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self.p.start = Mock(return_value=False)
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self.assertFalse(self.p.restart())
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self.assertEqual(self.p.state, 'restart failed (restarting)')
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@patch('os.chmod', Mock())
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@patch.object(builtins, 'open', MagicMock())
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def test_write_pgpass(self):
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self.p.config.write_pgpass({'host': 'localhost', 'port': '5432', 'user': 'foo'})
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self.p.config.write_pgpass({'host': 'localhost', 'port': '5432', 'user': 'foo', 'password': 'bar'})
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def test_checkpoint(self):
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with patch.object(MockCursor, 'fetchone', Mock(return_value=(True, ))):
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self.assertEqual(self.p.checkpoint({'user': 'postgres'}), 'is_in_recovery=true')
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with patch.object(MockCursor, 'execute', Mock(return_value=None)):
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self.assertIsNone(self.p.checkpoint())
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self.assertEqual(self.p.checkpoint(timeout=10), 'not accessible or not healty')
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@patch('patroni.postgresql.config.mtime', mock_mtime)
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@patch('patroni.postgresql.config.ConfigHandler._get_pg_settings')
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def test_check_recovery_conf(self, mock_get_pg_settings):
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mock_get_pg_settings.return_value = {
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'primary_conninfo': ['primary_conninfo', 'foo=', None, 'string', 'postmaster', self.p.config._auto_conf],
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'recovery_min_apply_delay': ['recovery_min_apply_delay', '0', 'ms', 'integer', 'sighup', 'foo']
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}
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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self.p.config.write_recovery_conf({'standby_mode': 'on'})
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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mock_get_pg_settings.return_value['primary_conninfo'][1] = ''
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mock_get_pg_settings.return_value['recovery_min_apply_delay'][1] = '1'
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self.assertEqual(self.p.config.check_recovery_conf(None), (False, False))
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mock_get_pg_settings.return_value['recovery_min_apply_delay'][5] = self.p.config._auto_conf
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, False))
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mock_get_pg_settings.return_value['recovery_min_apply_delay'][1] = '0'
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self.assertEqual(self.p.config.check_recovery_conf(None), (False, False))
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conninfo = {'host': '1', 'password': 'bar'}
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with patch('patroni.postgresql.config.ConfigHandler.primary_conninfo_params', Mock(return_value=conninfo)):
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mock_get_pg_settings.return_value['recovery_min_apply_delay'][1] = '1'
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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mock_get_pg_settings.return_value['primary_conninfo'][1] = 'host=1 passfile='\
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+ re.sub(r'([\'\\ ])', r'\\\1', self.p.config._pgpass)
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mock_get_pg_settings.return_value['recovery_min_apply_delay'][1] = '0'
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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self.p.config.write_recovery_conf({'standby_mode': 'on', 'primary_conninfo': conninfo.copy()})
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self.p.config.write_postgresql_conf()
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self.assertEqual(self.p.config.check_recovery_conf(None), (False, False))
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with patch.object(Postgresql, 'primary_conninfo', Mock(return_value='host=1')):
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mock_get_pg_settings.return_value['primary_slot_name'] = [
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'primary_slot_name', '', '', 'string', 'postmaster', self.p.config._postgresql_conf]
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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@patch.object(Postgresql, 'major_version', PropertyMock(return_value=120000))
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@patch.object(Postgresql, 'is_running', MockPostmaster)
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@patch.object(MockPostmaster, 'create_time', Mock(return_value=1234567), create=True)
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@patch('patroni.postgresql.config.ConfigHandler._get_pg_settings')
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def test__read_recovery_params(self, mock_get_pg_settings):
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mock_get_pg_settings.return_value = {'primary_conninfo': ['primary_conninfo', '', None, 'string',
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'postmaster', self.p.config._postgresql_conf]}
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self.p.config.write_recovery_conf({'standby_mode': 'on', 'primary_conninfo': {'password': 'foo'}})
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self.p.config.write_postgresql_conf()
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self.assertEqual(self.p.config.check_recovery_conf(None), (False, False))
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self.assertEqual(self.p.config.check_recovery_conf(None), (False, False))
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mock_get_pg_settings.side_effect = Exception
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with patch('patroni.postgresql.config.mtime', mock_mtime):
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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@patch.object(Postgresql, 'major_version', PropertyMock(return_value=100000))
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@patch.object(Postgresql, 'primary_conninfo', Mock(return_value='host=1'))
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def test__read_recovery_params_pre_v12(self):
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self.p.config.write_recovery_conf({'standby_mode': 'off', 'primary_conninfo': {'password': 'foo'}})
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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self.p.config.write_recovery_conf({'restore_command': '\n'})
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with patch('patroni.postgresql.config.mtime', mock_mtime):
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self.assertEqual(self.p.config.check_recovery_conf(None), (True, True))
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def test_write_postgresql_and_sanitize_auto_conf(self):
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read_data = 'primary_conninfo = foo\nfoo = bar\n'
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with open(os.path.join(self.p.data_dir, 'postgresql.auto.conf'), 'w') as f:
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f.write(read_data)
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mock_read_auto = mock_open(read_data=read_data)
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mock_read_auto.return_value.__iter__ = lambda o: iter(o.readline, '')
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with patch.object(builtins, 'open', Mock(side_effect=[mock_open()(), mock_read_auto(), IOError])),\
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patch('os.chmod', Mock()):
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self.p.config.write_postgresql_conf()
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with patch.object(builtins, 'open', Mock(side_effect=[mock_open()(), IOError])), patch('os.chmod', Mock()):
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self.p.config.write_postgresql_conf()
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self.p.config.write_recovery_conf({'foo': 'bar'})
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self.p.config.write_postgresql_conf()
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@patch.object(Postgresql, 'is_running', Mock(return_value=False))
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@patch.object(Postgresql, 'start', Mock())
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def test_follow(self):
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self.p.call_nowait('on_start')
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m = RemoteMember('1', {'restore_command': '2', 'primary_slot_name': 'foo', 'conn_kwargs': {'host': 'bar'}})
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self.p.follow(m)
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@patch.object(MockCursor, 'execute', Mock(side_effect=psycopg2.OperationalError))
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def test__query(self):
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self.assertRaises(PostgresConnectionException, self.p._query, 'blabla')
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self.p._state = 'restarting'
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self.assertRaises(RetryFailedError, self.p._query, 'blabla')
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def test_query(self):
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self.p.query('select 1')
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self.assertRaises(PostgresConnectionException, self.p.query, 'RetryFailedError')
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self.assertRaises(psycopg2.ProgrammingError, self.p.query, 'blabla')
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@patch.object(Postgresql, 'pg_isready', Mock(return_value=STATE_REJECT))
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def test_is_leader(self):
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self.assertTrue(self.p.is_leader())
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self.p.reset_cluster_info_state(None)
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with patch.object(Postgresql, '_query', Mock(side_effect=RetryFailedError(''))):
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self.assertRaises(PostgresConnectionException, self.p.is_leader)
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@patch.object(Postgresql, 'controldata',
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Mock(return_value={'Database cluster state': 'shut down', 'Latest checkpoint location': 'X/678'}))
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def test_latest_checkpoint_location(self):
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self.assertIsNone(self.p.latest_checkpoint_location())
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def test_reload(self):
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self.assertTrue(self.p.reload())
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@patch.object(Postgresql, 'is_running')
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def test_is_healthy(self, mock_is_running):
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mock_is_running.return_value = True
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self.assertTrue(self.p.is_healthy())
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mock_is_running.return_value = False
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self.assertFalse(self.p.is_healthy())
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@patch('psutil.Popen')
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def test_promote(self, mock_popen):
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mock_popen.return_value.wait.return_value = 0
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task = CriticalTask()
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self.assertTrue(self.p.promote(0, task))
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self.p.set_role('replica')
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self.p.config._config['pre_promote'] = 'test'
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with patch('patroni.postgresql.cancellable.CancellableSubprocess.is_cancelled', PropertyMock(return_value=1)):
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self.assertFalse(self.p.promote(0, task))
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mock_popen.side_effect = Exception
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self.assertFalse(self.p.promote(0, task))
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task.reset()
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task.cancel()
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self.assertFalse(self.p.promote(0, task))
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def test_timeline_wal_position(self):
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self.assertEqual(self.p.timeline_wal_position(), (1, 2, 1))
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Thread(target=self.p.timeline_wal_position).start()
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@patch.object(PostmasterProcess, 'from_pidfile')
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def test_is_running(self, mock_frompidfile):
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# Cached postmaster running
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mock_postmaster = self.p._postmaster_proc = MockPostmaster()
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self.assertEqual(self.p.is_running(), mock_postmaster)
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# Cached postmaster not running, no postmaster running
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mock_postmaster.is_running.return_value = False
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mock_frompidfile.return_value = None
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self.assertEqual(self.p.is_running(), None)
|
|
self.assertEqual(self.p._postmaster_proc, None)
|
|
|
|
# No cached postmaster, postmaster running
|
|
mock_frompidfile.return_value = mock_postmaster2 = MockPostmaster()
|
|
self.assertEqual(self.p.is_running(), mock_postmaster2)
|
|
self.assertEqual(self.p._postmaster_proc, mock_postmaster2)
|
|
|
|
@patch('shlex.split', Mock(side_effect=OSError))
|
|
def test_call_nowait(self):
|
|
self.p.set_role('replica')
|
|
self.assertIsNone(self.p.call_nowait('on_start'))
|
|
self.p.bootstrapping = True
|
|
self.assertIsNone(self.p.call_nowait('on_start'))
|
|
|
|
def test_non_existing_callback(self):
|
|
self.assertFalse(self.p.call_nowait('foobar'))
|
|
|
|
@patch.object(Postgresql, 'is_running', Mock(return_value=MockPostmaster()))
|
|
def test_is_leader_exception(self):
|
|
self.p.start()
|
|
self.p.query = Mock(side_effect=psycopg2.OperationalError("not supported"))
|
|
self.assertTrue(self.p.stop())
|
|
|
|
@patch('os.rename', Mock())
|
|
@patch('os.path.isdir', Mock(return_value=True))
|
|
@patch('os.unlink', Mock())
|
|
@patch('os.symlink', Mock())
|
|
@patch('patroni.postgresql.Postgresql.pg_wal_realpath', Mock(return_value={'pg_wal': '/mnt/pg_wal'}))
|
|
@patch('patroni.postgresql.Postgresql.pg_tblspc_realpaths', Mock(return_value={'42': '/mnt/tablespaces/archive'}))
|
|
def test_move_data_directory(self):
|
|
self.p.move_data_directory()
|
|
with patch('os.rename', Mock(side_effect=OSError)):
|
|
self.p.move_data_directory()
|
|
|
|
@patch('os.listdir', Mock(return_value=['recovery.conf']))
|
|
@patch('os.path.exists', Mock(return_value=True))
|
|
@patch.object(Postgresql, 'controldata', Mock())
|
|
def test_get_postgres_role_from_data_directory(self):
|
|
self.assertEqual(self.p.get_postgres_role_from_data_directory(), 'replica')
|
|
|
|
def test_remove_data_directory(self):
|
|
def _symlink(src, dst):
|
|
if os.name != 'nt': # os.symlink under Windows needs admin rights skip it
|
|
os.symlink(src, dst)
|
|
|
|
os.makedirs(os.path.join(self.p.data_dir, 'foo'))
|
|
_symlink('foo', os.path.join(self.p.data_dir, 'pg_wal'))
|
|
os.makedirs(os.path.join(self.p.data_dir, 'foo_tsp'))
|
|
pg_tblspc = os.path.join(self.p.data_dir, 'pg_tblspc')
|
|
os.makedirs(pg_tblspc)
|
|
_symlink('../foo_tsp', os.path.join(pg_tblspc, '12345'))
|
|
self.p.remove_data_directory()
|
|
open(self.p.data_dir, 'w').close()
|
|
self.p.remove_data_directory()
|
|
_symlink('unexisting', self.p.data_dir)
|
|
with patch('os.unlink', Mock(side_effect=OSError)):
|
|
self.p.remove_data_directory()
|
|
self.p.remove_data_directory()
|
|
|
|
@patch('patroni.postgresql.Postgresql._version_file_exists', Mock(return_value=True))
|
|
def test_controldata(self):
|
|
with patch('subprocess.check_output', Mock(return_value=0, side_effect=pg_controldata_string)):
|
|
data = self.p.controldata()
|
|
self.assertEqual(len(data), 50)
|
|
self.assertEqual(data['Database cluster state'], 'shut down in recovery')
|
|
self.assertEqual(data['wal_log_hints setting'], 'on')
|
|
self.assertEqual(int(data['Database block size']), 8192)
|
|
|
|
with patch('subprocess.check_output', Mock(side_effect=subprocess.CalledProcessError(1, ''))):
|
|
self.assertEqual(self.p.controldata(), {})
|
|
|
|
@patch('patroni.postgresql.Postgresql._version_file_exists', Mock(return_value=True))
|
|
@patch('subprocess.check_output', MagicMock(return_value=0, side_effect=pg_controldata_string))
|
|
def test_sysid(self):
|
|
self.assertEqual(self.p.sysid, "6200971513092291716")
|
|
|
|
@patch('os.path.isfile', Mock(return_value=True))
|
|
@patch('shutil.copy', Mock(side_effect=IOError))
|
|
def test_save_configuration_files(self):
|
|
self.p.config.save_configuration_files()
|
|
|
|
@patch('os.path.isfile', Mock(side_effect=[False, True]))
|
|
@patch('shutil.copy', Mock(side_effect=IOError))
|
|
def test_restore_configuration_files(self):
|
|
self.p.config.restore_configuration_files()
|
|
|
|
def test_can_create_replica_without_replication_connection(self):
|
|
self.p.config._config['create_replica_method'] = []
|
|
self.assertFalse(self.p.can_create_replica_without_replication_connection())
|
|
self.p.config._config['create_replica_method'] = ['wale', 'basebackup']
|
|
self.p.config._config['wale'] = {'command': 'foo', 'no_master': 1}
|
|
self.assertTrue(self.p.can_create_replica_without_replication_connection())
|
|
|
|
def test_replica_method_can_work_without_replication_connection(self):
|
|
self.assertFalse(self.p.replica_method_can_work_without_replication_connection('basebackup'))
|
|
self.assertFalse(self.p.replica_method_can_work_without_replication_connection('foobar'))
|
|
self.p.config._config['foo'] = {'command': 'bar', 'no_master': 1}
|
|
self.assertTrue(self.p.replica_method_can_work_without_replication_connection('foo'))
|
|
self.p.config._config['foo'] = {'command': 'bar'}
|
|
self.assertFalse(self.p.replica_method_can_work_without_replication_connection('foo'))
|
|
|
|
@patch('time.sleep', Mock())
|
|
@patch.object(Postgresql, 'is_running', Mock(return_value=True))
|
|
@patch.object(MockCursor, 'fetchone')
|
|
def test_reload_config(self, mock_fetchone):
|
|
mock_fetchone.return_value = (1,)
|
|
parameters = self._PARAMETERS.copy()
|
|
parameters.pop('f.oo')
|
|
parameters['wal_buffers'] = '512'
|
|
config = {'pg_hba': [''], 'pg_ident': [''], 'use_unix_socket': True, 'authentication': {},
|
|
'retry_timeout': 10, 'listen': '*', 'krbsrvname': 'postgres', 'parameters': parameters}
|
|
self.p.reload_config(config)
|
|
mock_fetchone.side_effect = Exception
|
|
parameters['b.ar'] = 'bar'
|
|
self.p.reload_config(config)
|
|
parameters['autovacuum'] = 'on'
|
|
self.p.reload_config(config)
|
|
parameters['autovacuum'] = 'off'
|
|
parameters.pop('search_path')
|
|
config['listen'] = '*:5433'
|
|
self.p.reload_config(config)
|
|
parameters['unix_socket_directories'] = '.'
|
|
self.p.reload_config(config)
|
|
self.p.config.resolve_connection_addresses()
|
|
|
|
@patch.object(Postgresql, '_version_file_exists', Mock(return_value=True))
|
|
def test_get_major_version(self):
|
|
with patch.object(builtins, 'open', mock_open(read_data='9.4')):
|
|
self.assertEqual(self.p.get_major_version(), 90400)
|
|
with patch.object(builtins, 'open', Mock(side_effect=Exception)):
|
|
self.assertEqual(self.p.get_major_version(), 0)
|
|
|
|
def test_postmaster_start_time(self):
|
|
now = datetime.datetime.now()
|
|
with patch.object(MockCursor, "fetchone", Mock(return_value=(now, True, '', '', '', '', False))):
|
|
self.assertEqual(self.p.postmaster_start_time(), now.isoformat(sep=' '))
|
|
t = Thread(target=self.p.postmaster_start_time)
|
|
t.start()
|
|
t.join()
|
|
|
|
with patch.object(MockCursor, "execute", side_effect=psycopg2.Error):
|
|
self.assertIsNone(self.p.postmaster_start_time())
|
|
|
|
def test_check_for_startup(self):
|
|
with patch('subprocess.call', return_value=0):
|
|
self.p._state = 'starting'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEqual(self.p.state, 'running')
|
|
|
|
with patch('subprocess.call', return_value=1):
|
|
self.p._state = 'starting'
|
|
self.assertTrue(self.p.check_for_startup())
|
|
self.assertEqual(self.p.state, 'starting')
|
|
|
|
with patch('subprocess.call', return_value=2):
|
|
self.p._state = 'starting'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEqual(self.p.state, 'start failed')
|
|
|
|
with patch('subprocess.call', return_value=0):
|
|
self.p._state = 'running'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEqual(self.p.state, 'running')
|
|
|
|
with patch('subprocess.call', return_value=127):
|
|
self.p._state = 'running'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEqual(self.p.state, 'running')
|
|
|
|
self.p._state = 'starting'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEqual(self.p.state, 'running')
|
|
|
|
def test_wait_for_startup(self):
|
|
state = {'sleeps': 0, 'num_rejects': 0, 'final_return': 0}
|
|
self.__thread_ident = current_thread().ident
|
|
|
|
def increment_sleeps(*args):
|
|
if current_thread().ident == self.__thread_ident:
|
|
print("Sleep")
|
|
state['sleeps'] += 1
|
|
|
|
def isready_return(*args):
|
|
ret = 1 if state['sleeps'] < state['num_rejects'] else state['final_return']
|
|
print("Isready {0} {1}".format(ret, state))
|
|
return ret
|
|
|
|
def time_in_state(*args):
|
|
return state['sleeps']
|
|
|
|
with patch('subprocess.call', side_effect=isready_return):
|
|
with patch('time.sleep', side_effect=increment_sleeps):
|
|
self.p.time_in_state = Mock(side_effect=time_in_state)
|
|
|
|
self.p._state = 'stopped'
|
|
self.assertTrue(self.p.wait_for_startup())
|
|
self.assertEqual(state['sleeps'], 0)
|
|
|
|
self.p._state = 'starting'
|
|
state['num_rejects'] = 5
|
|
self.assertTrue(self.p.wait_for_startup())
|
|
self.assertEqual(state['sleeps'], 5)
|
|
|
|
self.p._state = 'starting'
|
|
state['sleeps'] = 0
|
|
state['final_return'] = 2
|
|
self.assertFalse(self.p.wait_for_startup())
|
|
|
|
self.p._state = 'starting'
|
|
state['sleeps'] = 0
|
|
state['final_return'] = 0
|
|
self.assertFalse(self.p.wait_for_startup(timeout=2))
|
|
self.assertEqual(state['sleeps'], 3)
|
|
|
|
with patch.object(Postgresql, 'check_startup_state_changed', Mock(return_value=False)):
|
|
self.p.cancellable.cancel()
|
|
self.p._state = 'starting'
|
|
self.assertIsNone(self.p.wait_for_startup())
|
|
|
|
def test_pick_sync_standby(self):
|
|
cluster = Cluster(True, None, self.leader, 0, [self.me, self.other, self.leadermem], None,
|
|
SyncState(0, self.me.name, self.leadermem.name), None, None)
|
|
mock_cursor = Mock()
|
|
mock_cursor.fetchone.return_value = ('remote_apply',)
|
|
|
|
with patch.object(Postgresql, "query", side_effect=[
|
|
mock_cursor,
|
|
[(self.leadermem.name, 'sync', 1),
|
|
(self.me.name, 'async', 2),
|
|
(self.other.name, 'async', 2)]
|
|
]):
|
|
self.assertEqual(self.p.pick_synchronous_standby(cluster), ([self.leadermem.name], [self.leadermem.name]))
|
|
|
|
with patch.object(Postgresql, "query", side_effect=[
|
|
mock_cursor,
|
|
[(self.leadermem.name, 'potential', 1),
|
|
(self.me.name, 'async', 2),
|
|
(self.other.name, 'async', 2)]
|
|
]):
|
|
self.assertEqual(self.p.pick_synchronous_standby(cluster), ([self.leadermem.name], []))
|
|
|
|
with patch.object(Postgresql, "query", side_effect=[
|
|
mock_cursor,
|
|
[(self.me.name, 'async', 1),
|
|
(self.other.name, 'async', 2)]
|
|
]):
|
|
self.assertEqual(self.p.pick_synchronous_standby(cluster), ([self.me.name], []))
|
|
|
|
with patch.object(Postgresql, "query", side_effect=[
|
|
mock_cursor,
|
|
[('missing', 'sync', 1),
|
|
(self.me.name, 'async', 2),
|
|
(self.other.name, 'async', 3)]
|
|
]):
|
|
self.assertEqual(self.p.pick_synchronous_standby(cluster), ([self.me.name], []))
|
|
|
|
with patch.object(Postgresql, "query", side_effect=[mock_cursor, []]):
|
|
self.p._major_version = 90400
|
|
self.assertEqual(self.p.pick_synchronous_standby(cluster), ([], []))
|
|
|
|
def test_set_sync_standby(self):
|
|
def value_in_conf():
|
|
with open(os.path.join(self.p.data_dir, 'postgresql.conf')) as f:
|
|
for line in f:
|
|
if line.startswith('synchronous_standby_names'):
|
|
return line.strip()
|
|
|
|
mock_reload = self.p.reload = Mock()
|
|
self.p.config.set_synchronous_standby(['n1'])
|
|
self.assertEqual(value_in_conf(), "synchronous_standby_names = 'n1'")
|
|
mock_reload.assert_called()
|
|
|
|
mock_reload.reset_mock()
|
|
self.p.config.set_synchronous_standby(['n1'])
|
|
mock_reload.assert_not_called()
|
|
self.assertEqual(value_in_conf(), "synchronous_standby_names = 'n1'")
|
|
|
|
self.p.config.set_synchronous_standby(['n1', 'n2'])
|
|
mock_reload.assert_called()
|
|
self.assertEqual(value_in_conf(), "synchronous_standby_names = '2 (n1,n2)'")
|
|
|
|
mock_reload.reset_mock()
|
|
self.p.config.set_synchronous_standby([])
|
|
mock_reload.assert_called()
|
|
self.assertEqual(value_in_conf(), None)
|
|
|
|
def test_get_server_parameters(self):
|
|
config = {'synchronous_mode': True, 'parameters': {'wal_level': 'hot_standby'}, 'listen': '0'}
|
|
self.p.config.get_server_parameters(config)
|
|
config['synchronous_mode_strict'] = True
|
|
self.p.config.get_server_parameters(config)
|
|
self.p.config.set_synchronous_standby('foo')
|
|
self.assertTrue(str(self.p.config.get_server_parameters(config)).startswith('{'))
|
|
|
|
@patch('time.sleep', Mock())
|
|
def test__wait_for_connection_close(self):
|
|
mock_postmaster = MockPostmaster()
|
|
with patch.object(Postgresql, 'is_running', Mock(return_value=mock_postmaster)):
|
|
mock_postmaster.is_running.side_effect = [True, False, False]
|
|
mock_callback = Mock()
|
|
self.p.stop(on_safepoint=mock_callback)
|
|
|
|
mock_postmaster.is_running.side_effect = [True, False, False]
|
|
with patch.object(MockCursor, "execute", Mock(side_effect=psycopg2.Error)):
|
|
self.p.stop(on_safepoint=mock_callback)
|
|
|
|
def test_terminate_starting_postmaster(self):
|
|
mock_postmaster = MockPostmaster()
|
|
self.p.terminate_starting_postmaster(mock_postmaster)
|
|
mock_postmaster.signal_stop.assert_called()
|
|
mock_postmaster.wait.assert_called()
|
|
|
|
def test_replica_cached_timeline(self):
|
|
self.assertEqual(self.p.replica_cached_timeline(2), 3)
|
|
|
|
def test_get_master_timeline(self):
|
|
self.assertEqual(self.p.get_master_timeline(), 1)
|
|
|
|
@patch.object(Postgresql, 'get_postgres_role_from_data_directory', Mock(return_value='replica'))
|
|
def test__build_effective_configuration(self):
|
|
with patch.object(Postgresql, 'controldata',
|
|
Mock(return_value={'max_connections setting': '200',
|
|
'max_worker_processes setting': '20',
|
|
'max_locks_per_xact setting': '100',
|
|
'max_wal_senders setting': 10})):
|
|
self.p.cancellable.cancel()
|
|
self.assertFalse(self.p.start())
|
|
self.assertTrue(self.p.pending_restart)
|
|
|
|
@patch('os.path.exists', Mock(return_value=True))
|
|
@patch('os.path.isfile', Mock(return_value=False))
|
|
def test_pgpass_is_dir(self):
|
|
self.assertRaises(PatroniException, self.setUp)
|
|
|
|
@patch.object(Postgresql, '_query', Mock(side_effect=RetryFailedError('')))
|
|
def test_received_timeline(self):
|
|
self.p.set_role('standby_leader')
|
|
self.p.reset_cluster_info_state(None)
|
|
self.assertRaises(PostgresConnectionException, self.p.received_timeline)
|
|
|
|
def test__write_recovery_params(self):
|
|
self.p.config._write_recovery_params(Mock(), {'pause_at_recovery_target': 'false'})
|
|
with patch.object(Postgresql, 'major_version', PropertyMock(return_value=90400)):
|
|
self.p.config._write_recovery_params(Mock(), {'recovery_target_action': 'PROMOTE'})
|
|
|
|
@patch.object(Postgresql, 'is_running', Mock(return_value=True))
|
|
def test_set_enforce_hot_standby_feedback(self):
|
|
self.p.set_enforce_hot_standby_feedback(True)
|