mirror of
https://github.com/outbackdingo/patroni.git
synced 2026-01-28 18:20:10 +00:00
03c2a85d23
It is very easy to get current timeline on the master by executing
```sql
SELECT ('x' || SUBSTR(pg_walfile_name(pg_current_wal_lsn()), 1, 8))::bit(32)::int
```
Unfortunately the same method doesn't work when postgres is_in_recovery. Therefore we will use replication connection for that on the replicas. In order to avoid opening and closing replication connection on every HA loop we will cache the result if its value matches with the timeline of the master.
Also this PR introduces a new key in DCS: `/history`. It will contain a json serialized object with timeline history in a format similar to the usual history files. The differences are:
* Second column is the absolute wal position in bytes, instead of LSN
* Optionally there might be a fourth column - timestamp, (mtime of history file)
957 lines
43 KiB
Python
957 lines
43 KiB
Python
import datetime
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import mock # for the mock.call method, importing it without a namespace breaks python3
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import os
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import psycopg2
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import shutil
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import subprocess
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import unittest
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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, Leader, Member, SyncState
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from patroni.exceptions import PostgresConnectionException, PostgresException
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from patroni.postgresql import Postgresql, STATE_REJECT, STATE_NO_RESPONSE
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from patroni.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
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class MockCursor(object):
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def __init__(self, connection):
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self.connection = connection
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self.closed = False
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self.rowcount = 0
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self.results = []
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def execute(self, sql, *params):
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if sql.startswith('blabla'):
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raise psycopg2.ProgrammingError()
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elif sql == 'CHECKPOINT':
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raise psycopg2.OperationalError()
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elif sql.startswith('RetryFailedError'):
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raise RetryFailedError('retry')
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elif sql.startswith('SELECT slot_name'):
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self.results = [('blabla',), ('foobar',)]
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elif sql.startswith('SELECT CASE WHEN pg_is_in_recovery()'):
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self.results = [(1, 2)]
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elif sql.startswith('SELECT pg_is_in_recovery()'):
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self.results = [(False, 2)]
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elif sql.startswith('WITH replication_info AS ('):
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replication_info = '[{"application_name":"walreceiver","client_addr":"1.2.3.4",' +\
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'"state":"streaming","sync_state":"async","sync_priority":0}]'
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self.results = [('', 0, '', '', '', '', False, replication_info)]
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elif sql.startswith('SELECT name, setting'):
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self.results = [('wal_segment_size', '2048', '8kB', 'integer', 'internal'),
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('search_path', 'public', None, 'string', 'user'),
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('port', '5433', None, 'integer', 'postmaster'),
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('listen_addresses', '*', None, 'string', 'postmaster'),
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('autovacuum', 'on', None, 'bool', 'sighup'),
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('unix_socket_directories', '/tmp', None, 'string', 'postmaster')]
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elif sql.startswith('IDENTIFY_SYSTEM'):
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self.results = [('1', 2, '0/402EEC0', '')]
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elif sql.startswith('SELECT isdir, modification'):
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self.results = [(False, datetime.datetime.now())]
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elif sql.startswith('SELECT pg_read_file'):
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self.results = [('1\t0/40159C0\tno recovery target specified\n\n' +
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'2\t1/40159C0\tno recovery target specified\n',)]
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elif sql.startswith('TIMELINE_HISTORY '):
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self.results = [('', b'x\t0/40159C0\tno recovery target specified\n\n' +
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b'1\t0/40159C0\tno recovery target specified\n\n' +
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b'2\t0/402DD98\tno recovery target specified\n\n' +
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b'3\t0/403DD98\tno recovery target specified\n')]
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else:
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self.results = [(None, None, None, None, None, None, None, None, None, None)]
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def fetchone(self):
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return self.results[0]
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def fetchall(self):
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return self.results
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def __iter__(self):
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for i in self.results:
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yield i
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def __enter__(self):
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return self
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def __exit__(self, *args):
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pass
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class MockConnect(object):
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server_version = 99999
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autocommit = False
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closed = 0
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def cursor(self):
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return MockCursor(self)
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def __enter__(self):
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return self
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def __exit__(self, *args):
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pass
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@staticmethod
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def close():
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pass
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class MockPostmaster(object):
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def __init__(self, is_running=True, is_single_master=False):
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self.is_running = Mock(return_value=is_running)
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self.is_single_master = Mock(return_value=is_single_master)
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self.wait_for_user_backends_to_close = Mock()
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self.signal_stop = Mock(return_value=None)
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self.wait = Mock()
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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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def psycopg2_connect(*args, **kwargs):
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return MockConnect()
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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(unittest.TestCase):
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_PARAMETERS = {'wal_level': 'hot_standby', 'max_replication_slots': 5, 'f.oo': 'bar',
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'search_path': 'public', 'hot_standby': 'on', 'max_wal_senders': 5,
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'wal_keep_segments': 8, 'wal_log_hints': 'on', 'max_locks_per_transaction': 64,
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'max_worker_processes': 8, 'max_connections': 100, 'max_prepared_transactions': 0,
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'track_commit_timestamp': 'off', 'unix_socket_directories': '/tmp'}
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@patch('subprocess.call', Mock(return_value=0))
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@patch('psycopg2.connect', psycopg2_connect)
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@patch('os.rename', Mock())
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@patch.object(Postgresql, 'get_major_version', Mock(return_value=90600))
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@patch.object(Postgresql, 'is_running', Mock(return_value=True))
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def setUp(self):
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self.data_dir = 'data/test0'
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self.config_dir = self.data_dir
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if not os.path.exists(self.data_dir):
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os.makedirs(self.data_dir)
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self.p = Postgresql({'name': 'test0', 'scope': 'batman', 'data_dir': self.data_dir,
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'config_dir': self.config_dir, 'retry_timeout': 10, 'pgpass': '/tmp/pgpass0',
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'listen': '127.0.0.2, 127.0.0.3:5432', 'connect_address': '127.0.0.2:5432',
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'authentication': {'superuser': {'username': 'test', 'password': 'test'},
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'replication': {'username': 'replicator', 'password': 'rep-pass'}},
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'remove_data_directory_on_rewind_failure': True,
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'use_pg_rewind': True, 'pg_ctl_timeout': 'bla',
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'parameters': self._PARAMETERS,
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'recovery_conf': {'foo': 'bar'},
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'pg_hba': ['host all all 0.0.0.0/0 md5'],
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'callbacks': {'on_start': 'true', 'on_stop': 'true', 'on_reload': 'true',
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'on_restart': 'true', 'on_role_change': 'true'}})
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self.p._callback_executor = Mock()
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self.leadermem = Member(0, 'leader', 28, {'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5435/postgres'})
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self.leader = Leader(-1, 28, self.leadermem)
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self.other = Member(0, 'test-1', 28, {'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5433/postgres',
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'tags': {'replicatefrom': 'leader'}})
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self.me = Member(0, 'test0', 28, {'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5434/postgres'})
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def tearDown(self):
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shutil.rmtree('data')
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def test_get_initdb_options(self):
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self.assertEquals(self.p.get_initdb_options([{'encoding': 'UTF8'}, 'data-checksums']),
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['--encoding=UTF8', '--data-checksums'])
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self.assertRaises(Exception, self.p.get_initdb_options, [{'pgdata': 'bar'}])
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self.assertRaises(Exception, self.p.get_initdb_options, [{'foo': 'bar', 1: 2}])
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self.assertRaises(Exception, self.p.get_initdb_options, [1])
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@patch('os.path.exists', Mock(return_value=True))
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@patch('os.unlink', Mock())
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def test_delete_trigger_file(self):
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self.p.delete_trigger_file()
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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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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.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.cancel()
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self.assertFalse(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.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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# 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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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.assertEquals(self.p.state, 'restart failed (restarting)')
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@patch.object(builtins, 'open', MagicMock())
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def test_write_pgpass(self):
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self.p.write_pgpass({'host': 'localhost', 'port': '5432', 'user': 'foo'})
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self.p.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.assertEquals(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.assertEquals(self.p.checkpoint(), 'not accessible or not healty')
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@patch.object(Postgresql, 'cancellable_subprocess_call')
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@patch('patroni.postgresql.Postgresql.write_pgpass', MagicMock(return_value=dict()))
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def test_pg_rewind(self, mock_cancellable_subprocess_call):
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r = {'user': '', 'host': '', 'port': '', 'database': '', 'password': ''}
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mock_cancellable_subprocess_call.return_value = 0
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self.assertTrue(self.p.pg_rewind(r))
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mock_cancellable_subprocess_call.side_effect = OSError
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self.assertFalse(self.p.pg_rewind(r))
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def test_check_recovery_conf(self):
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self.p.write_recovery_conf({'primary_conninfo': 'foo'})
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self.assertFalse(self.p.check_recovery_conf(None))
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self.p.write_recovery_conf({})
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self.assertTrue(self.p.check_recovery_conf(None))
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@patch.object(Postgresql, 'start', Mock())
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@patch.object(Postgresql, 'can_rewind', PropertyMock(return_value=True))
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def test__get_local_timeline_lsn(self):
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self.p.trigger_check_diverged_lsn()
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with patch.object(Postgresql, 'controldata',
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Mock(return_value={'Database cluster state': 'shut down in recovery',
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'Minimum recovery ending location': '0/0',
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"Min recovery ending loc's timeline": '0'})):
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self.p.rewind_needed_and_possible(self.leader)
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with patch.object(Postgresql, 'is_running', Mock(return_value=True)):
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with patch.object(MockCursor, 'fetchone', Mock(side_effect=[(False, ), Exception])):
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self.p.rewind_needed_and_possible(self.leader)
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@patch.object(Postgresql, 'start', Mock())
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@patch.object(Postgresql, 'can_rewind', PropertyMock(return_value=True))
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@patch.object(Postgresql, '_get_local_timeline_lsn', Mock(return_value=(2, '40159C1')))
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@patch.object(Postgresql, 'check_leader_is_not_in_recovery')
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def test__check_timeline_and_lsn(self, mock_check_leader_is_not_in_recovery):
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mock_check_leader_is_not_in_recovery.return_value = False
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self.p.trigger_check_diverged_lsn()
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self.assertFalse(self.p.rewind_needed_and_possible(self.leader))
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mock_check_leader_is_not_in_recovery.return_value = True
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self.assertFalse(self.p.rewind_needed_and_possible(self.leader))
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self.p.trigger_check_diverged_lsn()
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with patch('psycopg2.connect', Mock(side_effect=Exception)):
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self.assertFalse(self.p.rewind_needed_and_possible(self.leader))
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self.p.trigger_check_diverged_lsn()
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with patch.object(MockCursor, 'fetchone', Mock(side_effect=[('', 2, '0/0'), ('', b'3\t0/40159C0\tn\n')])):
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self.assertFalse(self.p.rewind_needed_and_possible(self.leader))
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self.p.trigger_check_diverged_lsn()
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with patch.object(MockCursor, 'fetchone', Mock(return_value=('', 1, '0/0'))):
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with patch.object(Postgresql, '_get_local_timeline_lsn', Mock(return_value=(1, '0/0'))):
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self.assertFalse(self.p.rewind_needed_and_possible(self.leader))
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self.p.trigger_check_diverged_lsn()
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self.assertTrue(self.p.rewind_needed_and_possible(self.leader))
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@patch.object(MockCursor, 'fetchone', Mock(side_effect=[(True,), Exception]))
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def test_check_leader_is_not_in_recovery(self):
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self.p.check_leader_is_not_in_recovery()
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self.p.check_leader_is_not_in_recovery()
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@patch.object(Postgresql, 'cancellable_subprocess_call', Mock(return_value=0))
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@patch.object(Postgresql, 'checkpoint', side_effect=['', '1'])
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@patch.object(Postgresql, 'stop', Mock(return_value=False))
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@patch.object(Postgresql, 'start', Mock())
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def test_rewind(self, mock_checkpoint):
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self.p.rewind(self.leader)
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with patch.object(Postgresql, 'pg_rewind', Mock(return_value=False)):
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mock_checkpoint.side_effect = ['1', '', '', '']
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self.p.rewind(self.leader)
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self.p.rewind(self.leader)
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with patch.object(Postgresql, 'check_leader_is_not_in_recovery', Mock(return_value=False)):
|
|
self.p.rewind(self.leader)
|
|
self.p.config['remove_data_directory_on_rewind_failure'] = False
|
|
self.p.trigger_check_diverged_lsn()
|
|
self.p.rewind(self.leader)
|
|
with patch.object(Postgresql, 'is_running', Mock(return_value=True)):
|
|
self.p.rewind(self.leader)
|
|
self.p.is_leader = Mock(return_value=False)
|
|
self.p.rewind(self.leader)
|
|
|
|
@patch.object(Postgresql, 'is_running', Mock(return_value=False))
|
|
@patch.object(Postgresql, 'start', Mock())
|
|
def test_follow(self):
|
|
self.p.follow(None)
|
|
|
|
@patch('subprocess.check_output', Mock(return_value=0, side_effect=pg_controldata_string))
|
|
def test_can_rewind(self):
|
|
with patch('subprocess.call', MagicMock(return_value=1)):
|
|
self.assertFalse(self.p.can_rewind)
|
|
with patch('subprocess.call', side_effect=OSError):
|
|
self.assertFalse(self.p.can_rewind)
|
|
with patch.object(Postgresql, 'controldata', Mock(return_value={'wal_log_hints setting': 'on'})):
|
|
self.assertTrue(self.p.can_rewind)
|
|
self.p.config['use_pg_rewind'] = False
|
|
self.assertFalse(self.p.can_rewind)
|
|
|
|
@patch('time.sleep', Mock())
|
|
@patch.object(Postgresql, 'cancellable_subprocess_call')
|
|
@patch.object(Postgresql, 'remove_data_directory', Mock(return_value=True))
|
|
def test_create_replica(self, mock_cancellable_subprocess_call):
|
|
self.p.delete_trigger_file = Mock(side_effect=OSError)
|
|
|
|
self.p.config['create_replica_method'] = ['wale', 'basebackup']
|
|
self.p.config['wale'] = {'command': 'foo'}
|
|
mock_cancellable_subprocess_call.return_value = 0
|
|
self.assertEquals(self.p.create_replica(self.leader), 0)
|
|
del self.p.config['wale']
|
|
self.assertEquals(self.p.create_replica(self.leader), 0)
|
|
|
|
mock_cancellable_subprocess_call.return_value = 1
|
|
self.assertEquals(self.p.create_replica(self.leader), 1)
|
|
|
|
mock_cancellable_subprocess_call.side_effect = Exception('foo')
|
|
self.assertEquals(self.p.create_replica(self.leader), 1)
|
|
|
|
mock_cancellable_subprocess_call.side_effect = [1, 0]
|
|
self.assertEquals(self.p.create_replica(self.leader), 0)
|
|
|
|
mock_cancellable_subprocess_call.side_effect = [Exception(), 0]
|
|
self.assertEquals(self.p.create_replica(self.leader), 0)
|
|
|
|
self.p.cancel()
|
|
self.assertEquals(self.p.create_replica(self.leader), 1)
|
|
|
|
def test_basebackup(self):
|
|
self.p.cancel()
|
|
self.p.basebackup(None, None)
|
|
|
|
@patch.object(Postgresql, 'is_running', Mock(return_value=True))
|
|
def test_sync_replication_slots(self):
|
|
self.p.start()
|
|
cluster = Cluster(True, None, self.leader, 0, [self.me, self.other, self.leadermem], None, None, None)
|
|
with mock.patch('patroni.postgresql.Postgresql._query', Mock(side_effect=psycopg2.OperationalError)):
|
|
self.p.sync_replication_slots(cluster)
|
|
self.p.sync_replication_slots(cluster)
|
|
with mock.patch('patroni.postgresql.Postgresql.role', new_callable=PropertyMock(return_value='replica')):
|
|
self.p.sync_replication_slots(cluster)
|
|
with mock.patch('patroni.postgresql.logger.error', new_callable=Mock()) as errorlog_mock:
|
|
self.p.query = Mock()
|
|
alias1 = Member(0, 'test-3', 28, {'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5436/postgres'})
|
|
alias2 = Member(0, 'test.3', 28, {'conn_url': 'postgres://replicator:rep-pass@127.0.0.1:5436/postgres'})
|
|
cluster.members.extend([alias1, alias2])
|
|
self.p.sync_replication_slots(cluster)
|
|
errorlog_mock.assert_called_once()
|
|
assert "test-3" in errorlog_mock.call_args[0][1]
|
|
assert "test.3" in errorlog_mock.call_args[0][1]
|
|
|
|
@patch.object(MockCursor, 'execute', Mock(side_effect=psycopg2.OperationalError))
|
|
def test__query(self):
|
|
self.assertRaises(PostgresConnectionException, self.p._query, 'blabla')
|
|
self.p._state = 'restarting'
|
|
self.assertRaises(RetryFailedError, self.p._query, 'blabla')
|
|
|
|
def test_query(self):
|
|
self.p.query('select 1')
|
|
self.assertRaises(PostgresConnectionException, self.p.query, 'RetryFailedError')
|
|
self.assertRaises(psycopg2.ProgrammingError, self.p.query, 'blabla')
|
|
|
|
@patch.object(Postgresql, 'pg_isready', Mock(return_value=STATE_REJECT))
|
|
def test_is_leader(self):
|
|
self.assertTrue(self.p.is_leader())
|
|
self.p.reset_cluster_info_state()
|
|
with patch.object(Postgresql, '_query', Mock(side_effect=RetryFailedError(''))):
|
|
self.assertRaises(PostgresConnectionException, self.p.is_leader)
|
|
|
|
def test_reload(self):
|
|
self.assertTrue(self.p.reload())
|
|
|
|
@patch.object(Postgresql, 'is_running')
|
|
def test_is_healthy(self, mock_is_running):
|
|
mock_is_running.return_value = True
|
|
self.assertTrue(self.p.is_healthy())
|
|
mock_is_running.return_value = False
|
|
self.assertFalse(self.p.is_healthy())
|
|
|
|
def test_promote(self):
|
|
self.p.set_role('replica')
|
|
self.assertIsNone(self.p.promote(0))
|
|
self.assertTrue(self.p.promote(0))
|
|
|
|
def test_timeline_wal_position(self):
|
|
self.assertEquals(self.p.timeline_wal_position(), (1, 2))
|
|
Thread(target=self.p.timeline_wal_position).start()
|
|
|
|
@patch.object(PostmasterProcess, 'from_pidfile')
|
|
def test_is_running(self, mock_frompidfile):
|
|
# Cached postmaster running
|
|
mock_postmaster = self.p._postmaster_proc = MockPostmaster()
|
|
self.assertEquals(self.p.is_running(), mock_postmaster)
|
|
|
|
# Cached postmaster not running, no postmaster running
|
|
mock_postmaster.is_running.return_value = False
|
|
mock_frompidfile.return_value = None
|
|
self.assertEquals(self.p.is_running(), None)
|
|
self.assertEquals(self.p._postmaster_proc, None)
|
|
|
|
# No cached postmaster, postmaster running
|
|
mock_frompidfile.return_value = mock_postmaster2 = MockPostmaster()
|
|
self.assertEquals(self.p.is_running(), mock_postmaster2)
|
|
self.assertEquals(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))
|
|
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.object(Postgresql, 'is_running', Mock(return_value=True))
|
|
def test_bootstrap(self):
|
|
with patch('subprocess.call', Mock(return_value=1)):
|
|
self.assertFalse(self.p.bootstrap({}))
|
|
|
|
config = {'users': {'replicator': {'password': 'rep-pass', 'options': ['replication']}}}
|
|
|
|
self.p.bootstrap(config)
|
|
with open(os.path.join(self.config_dir, 'pg_hba.conf')) as f:
|
|
lines = f.readlines()
|
|
self.assertTrue('host all all 0.0.0.0/0 md5\n' in lines)
|
|
|
|
self.p.config.pop('pg_hba')
|
|
config.update({'post_init': '/bin/false',
|
|
'pg_hba': ['host replication replicator 127.0.0.1/32 md5',
|
|
'hostssl all all 0.0.0.0/0 md5',
|
|
'host all all 0.0.0.0/0 md5']})
|
|
self.p.bootstrap(config)
|
|
with open(os.path.join(self.data_dir, 'pg_hba.conf')) as f:
|
|
lines = f.readlines()
|
|
self.assertTrue('host replication replicator 127.0.0.1/32 md5\n' in lines)
|
|
|
|
@patch.object(Postgresql, 'cancellable_subprocess_call')
|
|
def test_custom_bootstrap(self, mock_cancellable_subprocess_call):
|
|
config = {'method': 'foo', 'foo': {'command': 'bar'}}
|
|
|
|
mock_cancellable_subprocess_call.return_value = 1
|
|
self.assertFalse(self.p.bootstrap(config))
|
|
|
|
mock_cancellable_subprocess_call.return_value = 0
|
|
with patch('subprocess.Popen', Mock(side_effect=Exception("42"))),\
|
|
patch('os.path.isfile', Mock(return_value=True)),\
|
|
patch('os.unlink', Mock()),\
|
|
patch.object(Postgresql, 'save_configuration_files', Mock()),\
|
|
patch.object(Postgresql, 'restore_configuration_files', Mock()),\
|
|
patch.object(Postgresql, 'write_recovery_conf', Mock()):
|
|
with self.assertRaises(Exception) as e:
|
|
self.p.bootstrap(config)
|
|
self.assertEqual(str(e.exception), '42')
|
|
|
|
config['foo']['recovery_conf'] = {'foo': 'bar'}
|
|
|
|
with self.assertRaises(Exception) as e:
|
|
self.p.bootstrap(config)
|
|
self.assertEqual(str(e.exception), '42')
|
|
|
|
mock_cancellable_subprocess_call.side_effect = Exception
|
|
self.assertFalse(self.p.bootstrap(config))
|
|
|
|
@patch('time.sleep', Mock())
|
|
@patch('os.unlink', Mock())
|
|
@patch.object(Postgresql, 'run_bootstrap_post_init', Mock(return_value=True))
|
|
@patch.object(Postgresql, '_custom_bootstrap', Mock(return_value=True))
|
|
@patch.object(Postgresql, 'start', Mock(return_value=True))
|
|
def test_post_bootstrap(self):
|
|
config = {'method': 'foo', 'foo': {'command': 'bar'}}
|
|
self.p.bootstrap(config)
|
|
|
|
task = CriticalTask()
|
|
with patch.object(Postgresql, 'create_or_update_role', Mock(side_effect=Exception)):
|
|
self.p.post_bootstrap({}, task)
|
|
self.assertFalse(task.result)
|
|
|
|
self.p.config.pop('pg_hba')
|
|
self.p.post_bootstrap({}, task)
|
|
self.assertTrue(task.result)
|
|
|
|
self.p.bootstrap(config)
|
|
self.p.set_state('stopped')
|
|
self.p.reload_config({'authentication': {'superuser': {'username': 'p', 'password': 'p'},
|
|
'replication': {'username': 'r', 'password': 'r'}},
|
|
'listen': '*', 'retry_timeout': 10, 'parameters': {'hba_file': 'foo'}})
|
|
with patch.object(Postgresql, 'restart', Mock()) as mock_restart:
|
|
self.p.post_bootstrap({}, task)
|
|
mock_restart.assert_called_once()
|
|
|
|
@patch.object(Postgresql, 'cancellable_subprocess_call')
|
|
def test_run_bootstrap_post_init(self, mock_cancellable_subprocess_call):
|
|
mock_cancellable_subprocess_call.return_value = 1
|
|
self.assertFalse(self.p.run_bootstrap_post_init({'post_init': '/bin/false'}))
|
|
|
|
mock_cancellable_subprocess_call.return_value = 0
|
|
self.p._superuser.pop('username')
|
|
self.assertTrue(self.p.run_bootstrap_post_init({'post_init': '/bin/false'}))
|
|
mock_cancellable_subprocess_call.assert_called()
|
|
args, kwargs = mock_cancellable_subprocess_call.call_args
|
|
self.assertTrue('PGPASSFILE' in kwargs['env'])
|
|
self.assertEquals(args[0], ['/bin/false', 'postgres://127.0.0.2:5432/postgres'])
|
|
|
|
mock_cancellable_subprocess_call.reset_mock()
|
|
self.p._local_address.pop('host')
|
|
self.assertTrue(self.p.run_bootstrap_post_init({'post_init': '/bin/false'}))
|
|
mock_cancellable_subprocess_call.assert_called()
|
|
self.assertEquals(mock_cancellable_subprocess_call.call_args[0][0], ['/bin/false', 'postgres://:5432/postgres'])
|
|
|
|
mock_cancellable_subprocess_call.side_effect = OSError
|
|
self.assertFalse(self.p.run_bootstrap_post_init({'post_init': '/bin/false'}))
|
|
|
|
@patch('patroni.postgresql.Postgresql.create_replica', Mock(return_value=0))
|
|
def test_clone(self):
|
|
self.p.clone(self.leader)
|
|
|
|
@patch('os.listdir', Mock(return_value=['recovery.conf']))
|
|
@patch('os.path.exists', Mock(return_value=True))
|
|
def test_get_postgres_role_from_data_directory(self):
|
|
self.assertEquals(self.p.get_postgres_role_from_data_directory(), 'replica')
|
|
|
|
def test_remove_data_directory(self):
|
|
self.p.remove_data_directory()
|
|
open(self.data_dir, 'w').close()
|
|
self.p.remove_data_directory()
|
|
os.symlink('unexisting', self.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.assertEquals(len(data), 50)
|
|
self.assertEquals(data['Database cluster state'], 'shut down in recovery')
|
|
self.assertEquals(data['wal_log_hints setting'], 'on')
|
|
self.assertEquals(int(data['Database block size']), 8192)
|
|
|
|
with patch('subprocess.check_output', Mock(side_effect=subprocess.CalledProcessError(1, ''))):
|
|
self.assertEquals(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.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.restore_configuration_files()
|
|
|
|
def test_can_create_replica_without_replication_connection(self):
|
|
self.p.config['create_replica_method'] = []
|
|
self.assertFalse(self.p.can_create_replica_without_replication_connection())
|
|
self.p.config['create_replica_method'] = ['wale', 'basebackup']
|
|
self.p.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['foo'] = {'command': 'bar', 'no_master': 1}
|
|
self.assertTrue(self.p.replica_method_can_work_without_replication_connection('foo'))
|
|
self.p.config['foo'] = {'command': 'bar'}
|
|
self.assertFalse(self.p.replica_method_can_work_without_replication_connection('foo'))
|
|
|
|
@patch.object(Postgresql, 'is_running', Mock(return_value=True))
|
|
def test_reload_config(self):
|
|
parameters = self._PARAMETERS.copy()
|
|
parameters.pop('f.oo')
|
|
config = {'pg_hba': [''], 'use_unix_socket': True, 'authentication': {},
|
|
'retry_timeout': 10, 'listen': '*', 'parameters': parameters}
|
|
self.p.reload_config(config)
|
|
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.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.assertEquals(self.p.get_major_version(), 90400)
|
|
with patch.object(builtins, 'open', Mock(side_effect=Exception)):
|
|
self.assertEquals(self.p.get_major_version(), 0)
|
|
|
|
def test_postmaster_start_time(self):
|
|
with patch.object(MockCursor, "fetchone", Mock(return_value=('foo', True, '', '', '', '', False))):
|
|
self.assertEqual(self.p.postmaster_start_time(), 'foo')
|
|
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.assertEquals(self.p.state, 'running')
|
|
|
|
with patch('subprocess.call', return_value=1):
|
|
self.p._state = 'starting'
|
|
self.assertTrue(self.p.check_for_startup())
|
|
self.assertEquals(self.p.state, 'starting')
|
|
|
|
with patch('subprocess.call', return_value=2):
|
|
self.p._state = 'starting'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEquals(self.p.state, 'start failed')
|
|
|
|
with patch('subprocess.call', return_value=0):
|
|
self.p._state = 'running'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEquals(self.p.state, 'running')
|
|
|
|
with patch('subprocess.call', return_value=127):
|
|
self.p._state = 'running'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEquals(self.p.state, 'running')
|
|
|
|
self.p._state = 'starting'
|
|
self.assertFalse(self.p.check_for_startup())
|
|
self.assertEquals(self.p.state, 'running')
|
|
|
|
def test_wait_for_startup(self):
|
|
state = {'sleeps': 0, 'num_rejects': 0, 'final_return': 0}
|
|
|
|
def increment_sleeps(*args):
|
|
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.assertEquals(state['sleeps'], 0)
|
|
|
|
self.p._state = 'starting'
|
|
state['num_rejects'] = 5
|
|
self.assertTrue(self.p.wait_for_startup())
|
|
self.assertEquals(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.assertEquals(state['sleeps'], 3)
|
|
|
|
with patch.object(Postgresql, 'check_startup_state_changed', Mock(return_value=False)):
|
|
self.p.cancel()
|
|
self.p._state = 'starting'
|
|
self.assertIsNone(self.p.wait_for_startup())
|
|
|
|
def test_read_pid_file(self):
|
|
pidfile = os.path.join(self.data_dir, 'postmaster.pid')
|
|
if os.path.exists(pidfile):
|
|
os.remove(pidfile)
|
|
self.assertEquals(self.p._read_pid_file(), {})
|
|
with open(pidfile, 'w') as fd:
|
|
fd.write("123\n/foo/bar\n123456789\n5432")
|
|
self.assertEquals(self.p._read_pid_file(), {"pid": "123", "data_dir": "/foo/bar",
|
|
"start_time": "123456789", "port": "5432"})
|
|
|
|
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)
|
|
|
|
with patch.object(Postgresql, "query", return_value=[
|
|
(self.leadermem.name, 'streaming', 'sync'),
|
|
(self.me.name, 'streaming', 'async'),
|
|
(self.other.name, 'streaming', 'async'),
|
|
]):
|
|
self.assertEquals(self.p.pick_synchronous_standby(cluster), (self.leadermem.name, True))
|
|
|
|
with patch.object(Postgresql, "query", return_value=[
|
|
(self.me.name, 'streaming', 'async'),
|
|
(self.leadermem.name, 'streaming', 'potential'),
|
|
(self.other.name, 'streaming', 'async'),
|
|
]):
|
|
self.assertEquals(self.p.pick_synchronous_standby(cluster), (self.leadermem.name, False))
|
|
|
|
with patch.object(Postgresql, "query", return_value=[
|
|
(self.me.name, 'streaming', 'async'),
|
|
(self.other.name, 'streaming', 'async'),
|
|
]):
|
|
self.assertEquals(self.p.pick_synchronous_standby(cluster), (self.me.name, False))
|
|
|
|
with patch.object(Postgresql, "query", return_value=[
|
|
('missing', 'streaming', 'sync'),
|
|
(self.me.name, 'streaming', 'async'),
|
|
(self.other.name, 'streaming', 'async'),
|
|
]):
|
|
self.assertEquals(self.p.pick_synchronous_standby(cluster), (self.me.name, False))
|
|
|
|
with patch.object(Postgresql, "query", return_value=[]):
|
|
self.assertEquals(self.p.pick_synchronous_standby(cluster), (None, False))
|
|
|
|
def test_set_sync_standby(self):
|
|
def value_in_conf():
|
|
with open(os.path.join(self.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.set_synchronous_standby('n1')
|
|
self.assertEquals(value_in_conf(), "synchronous_standby_names = 'n1'")
|
|
mock_reload.assert_called()
|
|
|
|
mock_reload.reset_mock()
|
|
self.p.set_synchronous_standby('n1')
|
|
mock_reload.assert_not_called()
|
|
self.assertEquals(value_in_conf(), "synchronous_standby_names = 'n1'")
|
|
|
|
self.p.set_synchronous_standby('n2')
|
|
mock_reload.assert_called()
|
|
self.assertEquals(value_in_conf(), "synchronous_standby_names = 'n2'")
|
|
|
|
mock_reload.reset_mock()
|
|
self.p.set_synchronous_standby(None)
|
|
mock_reload.assert_called()
|
|
self.assertEquals(value_in_conf(), None)
|
|
|
|
def test_get_server_parameters(self):
|
|
config = {'synchronous_mode': True, 'parameters': {'wal_level': 'hot_standby'}, 'listen': '0'}
|
|
self.p.get_server_parameters(config)
|
|
config['synchronous_mode_strict'] = True
|
|
self.p.get_server_parameters(config)
|
|
self.p.set_synchronous_standby('foo')
|
|
self.p.get_server_parameters(config)
|
|
|
|
@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_read_postmaster_opts(self):
|
|
m = mock_open(read_data='/usr/lib/postgres/9.6/bin/postgres "-D" "data/postgresql0" \
|
|
"--listen_addresses=127.0.0.1" "--port=5432" "--hot_standby=on" "--wal_level=hot_standby" \
|
|
"--wal_log_hints=on" "--max_wal_senders=5" "--max_replication_slots=5"\n')
|
|
with patch.object(builtins, 'open', m):
|
|
data = self.p.read_postmaster_opts()
|
|
self.assertEquals(data['wal_level'], 'hot_standby')
|
|
self.assertEquals(int(data['max_replication_slots']), 5)
|
|
self.assertEqual(data.get('D'), None)
|
|
|
|
m.side_effect = IOError
|
|
data = self.p.read_postmaster_opts()
|
|
self.assertEqual(data, dict())
|
|
|
|
@patch('subprocess.Popen')
|
|
def test_single_user_mode(self, subprocess_popen_mock):
|
|
subprocess_popen_mock.return_value.wait.return_value = 0
|
|
self.assertEquals(self.p.single_user_mode('CHECKPOINT', {'archive_mode': 'on'}), 0)
|
|
|
|
@patch('os.listdir', Mock(side_effect=[OSError, ['a', 'b']]))
|
|
@patch('os.unlink', Mock(side_effect=OSError))
|
|
@patch('os.remove', Mock())
|
|
@patch('os.path.islink', Mock(side_effect=[True, False]))
|
|
@patch('os.path.isfile', Mock(return_value=True))
|
|
def test_cleanup_archive_status(self):
|
|
self.p.cleanup_archive_status()
|
|
self.p.cleanup_archive_status()
|
|
|
|
@patch('os.unlink', Mock())
|
|
@patch('os.path.isfile', Mock(return_value=True))
|
|
@patch.object(Postgresql, 'single_user_mode', Mock(return_value=0))
|
|
def test_fix_cluster_state(self):
|
|
self.assertTrue(self.p.fix_cluster_state())
|
|
|
|
def test_replica_cached_timeline(self):
|
|
self.assertEquals(self.p.replica_cached_timeline(1), 2)
|
|
|
|
def test_get_master_timeline(self):
|
|
self.assertEquals(self.p.get_master_timeline(), 1)
|
|
|
|
def test_cancellable_subprocess_call(self):
|
|
self.p.cancel()
|
|
self.assertRaises(PostgresException, self.p.cancellable_subprocess_call)
|
|
|
|
@patch('patroni.postgresql.polling_loop', Mock(return_value=[0, 0]))
|
|
def test_cancel(self):
|
|
self.p._cancellable = Mock()
|
|
self.p._cancellable.returncode = None
|
|
self.p.cancel()
|
|
type(self.p._cancellable).returncode = PropertyMock(side_effect=[None, -15])
|
|
self.p.cancel()
|