def __init__(self, conf):
from patroni.api import RestApiServer
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.log import PatroniLogger
from patroni.postgresql import Postgresql
from patroni.request import PatroniRequest
from patroni.watchdog import Watchdog
self.setup_signal_handlers()
self.version = __version__
self.logger = PatroniLogger()
self.config = conf
self.logger.reload_config(self.config.get('log', {}))
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.request = PatroniRequest(self.config, True)
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def test_exceptions(self):
wd = Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'bad'
}
})
wd.impl.close = wd.impl.keepalive = Mock(side_effect=WatchdogError(''))
self.assertIsNone(wd.disable())
self.assertIsNone(wd.keepalive())
def test_invalid_timings(self):
watchdog = Watchdog({
'ttl': 30,
'loop_wait': 20,
'watchdog': {
'mode': 'automatic'
}
})
watchdog.activate()
self.assertEquals(len(mock_devices), 1)
self.assertFalse(watchdog.is_running)
def test_unsafe_timeout_disable_watchdog_and_exit(self):
watchdog = Watchdog({
'ttl': 30,
'loop_wait': 15,
'watchdog': {
'mode': 'required',
'safety_margin': -1
}
})
self.assertEqual(watchdog.activate(), False)
self.assertEqual(watchdog.is_running, False)
def test_basic_operation(self):
if platform.system() != 'Linux':
return
watchdog = Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'required'
}
})
watchdog.activate()
self.assertEquals(len(mock_devices), 2)
device = mock_devices[-1]
self.assertTrue(device.open)
self.assertEquals(device.timeout, 15)
watchdog.keepalive()
self.assertEquals(len(device.writes), 1)
watchdog.disable()
self.assertFalse(device.open)
self.assertEquals(device.writes[-1], b'V')
def test_timeout_does_not_ensure_safe_termination(self):
Watchdog({
'ttl': 30,
'loop_wait': 15,
'watchdog': {
'mode': 'auto'
}
}).activate()
self.assertEquals(len(mock_devices), 2)
def test_watchdog_not_activated(self):
self.assertFalse(
Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'required'
}
}).activate())
def test_watchdog_activate(self):
with patch.object(LinuxWatchdogDevice, 'open',
Mock(side_effect=WatchdogError(''))):
self.assertTrue(
Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'auto'
}
}).activate())
self.assertFalse(
Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'required'
}
}).activate())
def test_unsafe_timeout_disable_watchdog_and_exit(self):
self.assertRaises(
SystemExit,
Watchdog({
'ttl': 30,
'loop_wait': 15,
'watchdog': {
'mode': 'required'
}
}).activate)
def test_watchdog_not_activated(self):
self.assertRaises(
SystemExit,
Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'required'
}
}).activate)
def test_parse_mode(self):
with patch('patroni.watchdog.base.logger.warning',
new_callable=Mock()) as warning_mock:
watchdog = Watchdog({
'ttl': 30,
'loop_wait': 10,
'watchdog': {
'mode': 'bad'
}
})
self.assertEquals(watchdog.mode, 'off')
warning_mock.assert_called_once()
def test_basic_operation(self):
watchdog = Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'required'}})
watchdog.activate()
self.assertEqual(len(mock_devices), 2)
device = mock_devices[-1]
self.assertTrue(device.open)
self.assertEqual(device.timeout, 24)
watchdog.keepalive()
self.assertEqual(len(device.writes), 1)
watchdog.disable()
self.assertFalse(device.open)
self.assertEqual(device.writes[-1], b'V')
def __init__(self, config):
from patroni.api import RestApiServer
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.postgresql import Postgresql
from patroni.request import PatroniRequest
from patroni.watchdog import Watchdog
super(Patroni, self).__init__(config)
self.version = __version__
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.request = PatroniRequest(self.config, True)
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def __init__(self):
from patroni.api import RestApiServer
from patroni.config import Config
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.postgresql import Postgresql
from patroni.version import __version__
from patroni.watchdog import Watchdog
self.setup_signal_handlers()
self.version = __version__
self.config = Config()
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def test_basic_operation(self):
watchdog = Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'required'}})
watchdog.activate()
self.assertEquals(len(mock_devices), 2)
device = mock_devices[-1]
self.assertTrue(device.open)
self.assertEquals(device.timeout, 24)
watchdog.keepalive()
self.assertEquals(len(device.writes), 1)
watchdog.disable()
self.assertFalse(device.open)
self.assertEquals(device.writes[-1], b'V')
def __init__(self, p, d):
os.environ[Config.PATRONI_CONFIG_VARIABLE] = """
restapi:
listen: 0.0.0.0:8008
bootstrap:
users:
replicator:
password: rep-pass
options:
- replication
postgresql:
name: foo
data_dir: data/postgresql0
pg_rewind:
username: postgres
password: postgres
watchdog:
mode: off
zookeeper:
exhibitor:
hosts: [localhost]
port: 8181
"""
# We rely on sys.argv in Config, so it's necessary to reset
# all the extra values that are coming from py.test
sys.argv = sys.argv[:1]
self.config = Config()
self.postgresql = p
self.dcs = d
self.api = Mock()
self.tags = {'foo': 'bar'}
self.nofailover = None
self.replicatefrom = None
self.api.connection_string = 'http://127.0.0.1:8008'
self.clonefrom = None
self.nosync = False
self.scheduled_restart = {'schedule': future_restart_time,
'postmaster_start_time': str(postmaster_start_time)}
self.watchdog = Watchdog(self.config)
def __init__(self):
from patroni.api import RestApiServer
from patroni.config import Config
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.postgresql import Postgresql
from patroni.version import __version__
from patroni.watchdog import Watchdog
self.setup_signal_handlers()
self.version = __version__
self.config = Config()
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
class Patroni(object):
def __init__(self, conf):
from patroni.api import RestApiServer
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.log import PatroniLogger
from patroni.postgresql import Postgresql
from patroni.request import PatroniRequest
from patroni.watchdog import Watchdog
self.setup_signal_handlers()
self.version = __version__
self.logger = PatroniLogger()
self.config = conf
self.logger.reload_config(self.config.get('log', {}))
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.request = PatroniRequest(self.config, True)
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def load_dynamic_configuration(self):
from patroni.exceptions import DCSError
while True:
try:
cluster = self.dcs.get_cluster()
#TODO: 动态参数 cluster.config 有哪些？如何设置？
if cluster and cluster.config and cluster.config.data:
if self.config.set_dynamic_configuration(cluster.config):
self.dcs.reload_config(self.config)
self.watchdog.reload_config(self.config)
elif not self.config.dynamic_configuration and 'bootstrap' in self.config:
if self.config.set_dynamic_configuration(
self.config['bootstrap']['dcs']):
self.dcs.reload_config(self.config)
break
except DCSError:
logger.warning('Can not get cluster from dcs')
time.sleep(5)
def get_tags(self):
return {
tag: value
for tag, value in self.config.get('tags', {}).items()
if tag not in ('clonefrom', 'nofailover', 'noloadbalance',
'nosync') or value
}
@property
def nofailover(self):
return bool(self.tags.get('nofailover', False))
@property
def nosync(self):
return bool(self.tags.get('nosync', False))
def reload_config(self, sighup=False):
try:
self.tags = self.get_tags()
self.logger.reload_config(self.config.get('log', {}))
self.watchdog.reload_config(self.config)
if sighup:
self.request.reload_config(self.config)
self.api.reload_config(self.config['restapi'])
self.postgresql.reload_config(self.config['postgresql'], sighup)
self.dcs.reload_config(self.config)
except Exception:
logger.exception('Failed to reload config_file=%s',
self.config.config_file)
@property
def replicatefrom(self):
return self.tags.get('replicatefrom')
def sighup_handler(self, *args):
self._received_sighup = True
def sigterm_handler(self, *args):
with self._sigterm_lock:
if not self._received_sigterm:
self._received_sigterm = True
sys.exit()
@property
def noloadbalance(self):
return bool(self.tags.get('noloadbalance', False))
def schedule_next_run(self):
self.next_run += self.dcs.loop_wait
current_time = time.time()
nap_time = self.next_run - current_time
if nap_time <= 0:
self.next_run = current_time
# Release the GIL so we don't starve anyone waiting on async_executor lock
time.sleep(0.001)
# Warn user that Patroni is not keeping up
logger.warning("Loop time exceeded, rescheduling immediately.")
elif self.ha.watch(nap_time):
self.next_run = time.time()
@property
def received_sigterm(self):
with self._sigterm_lock:
return self._received_sigterm
def run(self):
# SGS: 启动API
self.api.start()
# SGS: 启动日志记录
self.logger.start()
self.next_run = time.time()
while not self.received_sigterm:
# SGS: 是否收到SIGHUP信号 如何触发这个信息，直接用kill命令下发？
if self._received_sighup:
self._received_sighup = False
if self.config.reload_local_configuration():
self.reload_config(True)
else:
self.postgresql.config.reload_config(
self.config['postgresql'], True)
# SGS: 定时检查本patroni关联的member的状态并做响应处理，具体见 run_cycle 函数里的注释
logger.info(self.ha.run_cycle())
if self.dcs.cluster and self.dcs.cluster.config and self.dcs.cluster.config.data \
and self.config.set_dynamic_configuration(self.dcs.cluster.config):
self.reload_config()
if self.postgresql.role != 'uninitialized':
self.config.save_cache()
self.schedule_next_run()
def setup_signal_handlers(self):
from threading import Lock
self._received_sighup = False
self._sigterm_lock = Lock()
self._received_sigterm = False
if os.name != 'nt':
signal.signal(signal.SIGHUP, self.sighup_handler)
signal.signal(signal.SIGTERM, self.sigterm_handler)
def shutdown(self):
with self._sigterm_lock:
self._received_sigterm = True
try:
self.api.shutdown()
except Exception:
logger.exception('Exception during RestApi.shutdown')
try:
self.ha.shutdown()
except Exception:
logger.exception('Exception during Ha.shutdown')
self.logger.shutdown()
class Patroni(object):
def __init__(self):
from patroni.api import RestApiServer
from patroni.config import Config
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.postgresql import Postgresql
from patroni.version import __version__
from patroni.watchdog import Watchdog
self.setup_signal_handlers()
self.version = __version__
self.config = Config()
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def load_dynamic_configuration(self):
from patroni.exceptions import DCSError
while True:
try:
cluster = self.dcs.get_cluster()
if cluster and cluster.config and cluster.config.data:
if self.config.set_dynamic_configuration(cluster.config):
self.dcs.reload_config(self.config)
self.watchdog.reload_config(self.config)
elif not self.config.dynamic_configuration and 'bootstrap' in self.config:
if self.config.set_dynamic_configuration(
self.config['bootstrap']['dcs']):
self.dcs.reload_config(self.config)
break
except DCSError:
logger.warning('Can not get cluster from dcs')
def get_tags(self):
return {
tag: value
for tag, value in self.config.get('tags', {}).items()
if tag not in ('clonefrom', 'nofailover', 'noloadbalance',
'nosync') or value
}
@property
def nofailover(self):
return bool(self.tags.get('nofailover', False))
@property
def nosync(self):
return bool(self.tags.get('nosync', False))
def reload_config(self):
try:
self.tags = self.get_tags()
self.dcs.reload_config(self.config)
self.watchdog.reload_config(self.config)
self.api.reload_config(self.config['restapi'])
self.postgresql.reload_config(self.config['postgresql'])
except Exception:
logger.exception('Failed to reload config_file=%s',
self.config.config_file)
@property
def replicatefrom(self):
return self.tags.get('replicatefrom')
def sighup_handler(self, *args):
self._received_sighup = True
def sigterm_handler(self, *args):
if not self._received_sigterm:
self._received_sigterm = True
sys.exit()
@property
def noloadbalance(self):
return bool(self.tags.get('noloadbalance', False))
def schedule_next_run(self):
self.next_run += self.dcs.loop_wait
current_time = time.time()
nap_time = self.next_run - current_time
if nap_time <= 0:
self.next_run = current_time
# Release the GIL so we don't starve anyone waiting on async_executor lock
time.sleep(0.001)
# Warn user that Patroni is not keeping up
logger.warning("Loop time exceeded, rescheduling immediately.")
elif self.ha.watch(nap_time):
self.next_run = time.time()
def run(self):
self.api.start()
self.next_run = time.time()
while not self._received_sigterm:
if self._received_sighup:
self._received_sighup = False
if self.config.reload_local_configuration():
self.reload_config()
logger.info(self.ha.run_cycle())
if self.dcs.cluster and self.dcs.cluster.config and self.dcs.cluster.config.data \
and self.config.set_dynamic_configuration(self.dcs.cluster.config):
self.reload_config()
if self.postgresql.role != 'uninitialized':
self.config.save_cache()
self.schedule_next_run()
def setup_signal_handlers(self):
self._received_sighup = False
self._received_sigterm = False
signal.signal(signal.SIGHUP, self.sighup_handler)
signal.signal(signal.SIGTERM, self.sigterm_handler)
def shutdown(self):
self.api.shutdown()
self.ha.shutdown()
def test_exceptions(self):
wd = Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'bad'}})
wd.impl.close = wd.impl.keepalive = Mock(side_effect=WatchdogError(''))
self.assertTrue(wd.activate())
self.assertIsNone(wd.keepalive())
self.assertIsNone(wd.disable())
def test_invalid_timings(self):
watchdog = Watchdog({'ttl': 30, 'loop_wait': 20, 'watchdog': {'mode': 'automatic', 'safety_margin': -1}})
watchdog.activate()
self.assertEquals(len(mock_devices), 1)
self.assertFalse(watchdog.is_running)
def test_config_reload(self):
watchdog = Watchdog({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
self.assertTrue(watchdog.activate())
self.assertTrue(watchdog.is_running)
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'off'}})
self.assertFalse(watchdog.is_running)
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
self.assertFalse(watchdog.is_running)
watchdog.keepalive()
self.assertTrue(watchdog.is_running)
watchdog.disable()
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required', 'driver': 'unknown'}})
self.assertFalse(watchdog.is_healthy)
self.assertFalse(watchdog.activate())
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
self.assertFalse(watchdog.is_running)
watchdog.keepalive()
self.assertTrue(watchdog.is_running)
watchdog.reload_config({'ttl': 60, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
watchdog.keepalive()
def test_unsafe_timeout_disable_watchdog_and_exit(self):
watchdog = Watchdog({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required', 'safety_margin': -1}})
self.assertEquals(watchdog.activate(), False)
self.assertEquals(watchdog.is_running, False)
class Patroni(AbstractPatroniDaemon):
def __init__(self, config):
from patroni.api import RestApiServer
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.postgresql import Postgresql
from patroni.request import PatroniRequest
from patroni.watchdog import Watchdog
super(Patroni, self).__init__(config)
self.version = __version__
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.request = PatroniRequest(self.config, True)
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def load_dynamic_configuration(self):
from patroni.exceptions import DCSError
while True:
try:
cluster = self.dcs.get_cluster()
if cluster and cluster.config and cluster.config.data:
if self.config.set_dynamic_configuration(cluster.config):
self.dcs.reload_config(self.config)
self.watchdog.reload_config(self.config)
elif not self.config.dynamic_configuration and 'bootstrap' in self.config:
if self.config.set_dynamic_configuration(
self.config['bootstrap']['dcs']):
self.dcs.reload_config(self.config)
break
except DCSError:
logger.warning('Can not get cluster from dcs')
time.sleep(5)
def get_tags(self):
return {
tag: value
for tag, value in self.config.get('tags', {}).items()
if tag not in ('clonefrom', 'nofailover', 'noloadbalance',
'nosync') or value
}
@property
def nofailover(self):
return bool(self.tags.get('nofailover', False))
@property
def nosync(self):
return bool(self.tags.get('nosync', False))
def reload_config(self, sighup=False, local=False):
try:
super(Patroni, self).reload_config(sighup, local)
if local:
self.tags = self.get_tags()
self.request.reload_config(self.config)
self.api.reload_config(self.config['restapi'])
self.watchdog.reload_config(self.config)
self.postgresql.reload_config(self.config['postgresql'], sighup)
self.dcs.reload_config(self.config)
except Exception:
logger.exception('Failed to reload config_file=%s',
self.config.config_file)
@property
def replicatefrom(self):
return self.tags.get('replicatefrom')
@property
def noloadbalance(self):
return bool(self.tags.get('noloadbalance', False))
def schedule_next_run(self):
self.next_run += self.dcs.loop_wait
current_time = time.time()
nap_time = self.next_run - current_time
if nap_time <= 0:
self.next_run = current_time
# Release the GIL so we don't starve anyone waiting on async_executor lock
time.sleep(0.001)
# Warn user that Patroni is not keeping up
logger.warning("Loop time exceeded, rescheduling immediately.")
elif self.ha.watch(nap_time):
self.next_run = time.time()
def run(self):
self.api.start()
self.next_run = time.time()
super(Patroni, self).run()
def _run_cycle(self):
logger.info(self.ha.run_cycle())
if self.dcs.cluster and self.dcs.cluster.config and self.dcs.cluster.config.data \
and self.config.set_dynamic_configuration(self.dcs.cluster.config):
self.reload_config()
if self.postgresql.role != 'uninitialized':
self.config.save_cache()
self.schedule_next_run()
def _shutdown(self):
try:
self.api.shutdown()
except Exception:
logger.exception('Exception during RestApi.shutdown')
try:
self.ha.shutdown()
except Exception:
logger.exception('Exception during Ha.shutdown')
def test_config_reload(self):
watchdog = Watchdog({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
self.assertTrue(watchdog.activate())
self.assertTrue(watchdog.is_running)
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'off'}})
self.assertFalse(watchdog.is_running)
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
self.assertFalse(watchdog.is_running)
watchdog.keepalive()
self.assertTrue(watchdog.is_running)
watchdog.disable()
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required', 'driver': 'unknown'}})
self.assertFalse(watchdog.is_healthy)
self.assertFalse(watchdog.activate())
watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
self.assertFalse(watchdog.is_running)
watchdog.keepalive()
self.assertTrue(watchdog.is_running)
watchdog.reload_config({'ttl': 60, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})
watchdog.keepalive()
class Patroni(object):
def __init__(self):
from patroni.api import RestApiServer
from patroni.config import Config
from patroni.dcs import get_dcs
from patroni.ha import Ha
from patroni.postgresql import Postgresql
from patroni.version import __version__
from patroni.watchdog import Watchdog
self.setup_signal_handlers()
self.version = __version__
self.config = Config()
self.dcs = get_dcs(self.config)
self.watchdog = Watchdog(self.config)
self.load_dynamic_configuration()
self.postgresql = Postgresql(self.config['postgresql'])
self.api = RestApiServer(self, self.config['restapi'])
self.ha = Ha(self)
self.tags = self.get_tags()
self.next_run = time.time()
self.scheduled_restart = {}
def load_dynamic_configuration(self):
from patroni.exceptions import DCSError
while True:
try:
cluster = self.dcs.get_cluster()
if cluster and cluster.config and cluster.config.data:
if self.config.set_dynamic_configuration(cluster.config):
self.dcs.reload_config(self.config)
self.watchdog.reload_config(self.config)
elif not self.config.dynamic_configuration and 'bootstrap' in self.config:
if self.config.set_dynamic_configuration(self.config['bootstrap']['dcs']):
self.dcs.reload_config(self.config)
break
except DCSError:
logger.warning('Can not get cluster from dcs')
def get_tags(self):
return {tag: value for tag, value in self.config.get('tags', {}).items()
if tag not in ('clonefrom', 'nofailover', 'noloadbalance', 'nosync') or value}
@property
def nofailover(self):
return bool(self.tags.get('nofailover', False))
@property
def nosync(self):
return bool(self.tags.get('nosync', False))
def reload_config(self):
try:
self.tags = self.get_tags()
self.dcs.reload_config(self.config)
self.watchdog.reload_config(self.config)
self.api.reload_config(self.config['restapi'])
self.postgresql.reload_config(self.config['postgresql'])
except Exception:
logger.exception('Failed to reload config_file=%s', self.config.config_file)
@property
def replicatefrom(self):
return self.tags.get('replicatefrom')
def sighup_handler(self, *args):
self._received_sighup = True
def sigterm_handler(self, *args):
if not self._received_sigterm:
self._received_sigterm = True
sys.exit()
@property
def noloadbalance(self):
return bool(self.tags.get('noloadbalance', False))
def schedule_next_run(self):
self.next_run += self.dcs.loop_wait
current_time = time.time()
nap_time = self.next_run - current_time
if nap_time <= 0:
self.next_run = current_time
# Release the GIL so we don't starve anyone waiting on async_executor lock
time.sleep(0.001)
# Warn user that Patroni is not keeping up
logger.warning("Loop time exceeded, rescheduling immediately.")
elif self.ha.watch(nap_time):
self.next_run = time.time()
def run(self):
self.api.start()
self.next_run = time.time()
while not self._received_sigterm:
if self._received_sighup:
self._received_sighup = False
if self.config.reload_local_configuration():
self.reload_config()
logger.info(self.ha.run_cycle())
if self.dcs.cluster and self.dcs.cluster.config and self.dcs.cluster.config.data \
and self.config.set_dynamic_configuration(self.dcs.cluster.config):
self.reload_config()
if self.postgresql.role != 'uninitialized':
self.config.save_cache()
self.schedule_next_run()
def setup_signal_handlers(self):
self._received_sighup = False
self._received_sigterm = False
signal.signal(signal.SIGHUP, self.sighup_handler)
signal.signal(signal.SIGTERM, self.sigterm_handler)
def shutdown(self):
self.api.shutdown()
self.ha.shutdown()