mirror of
https://github.com/outbackdingo/patroni.git
synced 2026-08-25 14:53:37 +00:00
138 lines
4.3 KiB
Python
138 lines
4.3 KiB
Python
import unittest
|
|
import requests
|
|
|
|
from helpers.dcs import DCSError
|
|
from helpers.etcd import Cluster, Etcd
|
|
from helpers.ha import Ha
|
|
from test_etcd import requests_get, requests_put, requests_delete
|
|
|
|
|
|
def true(*args, **kwargs):
|
|
return True
|
|
|
|
|
|
def false(*args, **kwargs):
|
|
return False
|
|
|
|
|
|
class MockPostgresql:
|
|
|
|
def __init__(self):
|
|
self.name = 'postgresql0'
|
|
self.is_promoted = False
|
|
|
|
def is_healthy(self):
|
|
return True
|
|
|
|
def write_recovery_conf(self, _):
|
|
return True
|
|
|
|
def start(self):
|
|
return True
|
|
|
|
def is_healthiest_node(self, members):
|
|
return True
|
|
|
|
def is_leader(self):
|
|
return True
|
|
|
|
def promote(self):
|
|
return True
|
|
|
|
def demote(self, _):
|
|
return True
|
|
|
|
def follow_the_leader(self, _):
|
|
return True
|
|
|
|
def create_replication_slots(self, _):
|
|
return True
|
|
|
|
def last_operation(self):
|
|
return 0
|
|
|
|
|
|
def nop(*args, **kwargs):
|
|
pass
|
|
|
|
|
|
def dead_etcd():
|
|
raise DCSError('Etcd is not responding properly')
|
|
|
|
|
|
class TestHa(unittest.TestCase):
|
|
|
|
def __init__(self, method_name='runTest'):
|
|
self.setUp = self.set_up
|
|
super(TestHa, self).__init__(method_name)
|
|
|
|
def set_up(self):
|
|
requests.get = requests_get
|
|
requests.put = requests_put
|
|
requests.delete = requests_delete
|
|
self.p = MockPostgresql()
|
|
self.e = Etcd('foo', {'ttl': 30, 'host': 'remotehost:2379', 'scope': 'test'})
|
|
self.ha = Ha(self.p, self.e)
|
|
self.ha.load_cluster_from_dcs()
|
|
self.ha.cluster = Cluster(False, None, None, [])
|
|
self.ha.load_cluster_from_dcs = nop
|
|
|
|
def test_start_as_slave(self):
|
|
self.p.is_healthy = false
|
|
self.assertEquals(self.ha.run_cycle(), 'started as a secondary')
|
|
|
|
def test_start_as_readonly(self):
|
|
self.ha.cluster.is_unlocked = false
|
|
self.p.is_leader = self.p.is_healthy = false
|
|
self.ha.has_lock = true
|
|
self.assertEquals(self.ha.run_cycle(), 'promoted self to leader because i had the session lock')
|
|
|
|
def test_acquire_lock_as_master(self):
|
|
self.assertEquals(self.ha.run_cycle(), 'acquired session lock as a leader')
|
|
|
|
def test_promoted_by_acquiring_lock(self):
|
|
self.p.is_leader = false
|
|
self.assertEquals(self.ha.run_cycle(), 'promoted self to leader by acquiring session lock')
|
|
|
|
def test_demote_after_failing_to_obtain_lock(self):
|
|
self.ha.acquire_lock = false
|
|
self.assertEquals(self.ha.run_cycle(), 'demoted self due after trying and failing to obtain lock')
|
|
|
|
def test_follow_new_leader_after_failing_to_obtain_lock(self):
|
|
self.ha.acquire_lock = false
|
|
self.p.is_leader = false
|
|
self.assertEquals(self.ha.run_cycle(), 'following new leader after trying and failing to obtain lock')
|
|
|
|
def test_demote_because_not_healthiest(self):
|
|
self.p.is_healthiest_node = false
|
|
self.assertEquals(self.ha.run_cycle(), 'demoting self because i am not the healthiest node')
|
|
|
|
def test_follow_new_leader_because_not_healthiest(self):
|
|
self.p.is_healthiest_node = false
|
|
self.p.is_leader = false
|
|
self.assertEquals(self.ha.run_cycle(), 'following a different leader because i am not the healthiest node')
|
|
|
|
def test_promote_because_have_lock(self):
|
|
self.ha.cluster.is_unlocked = false
|
|
self.ha.has_lock = true
|
|
self.p.is_leader = false
|
|
self.assertEquals(self.ha.run_cycle(), 'promoted self to leader because i had the session lock')
|
|
|
|
def test_leader_with_lock(self):
|
|
self.ha.cluster.is_unlocked = false
|
|
self.ha.has_lock = true
|
|
self.assertEquals(self.ha.run_cycle(), 'no action. i am the leader with the lock')
|
|
|
|
def test_demote_because_not_having_lock(self):
|
|
self.ha.cluster.is_unlocked = false
|
|
self.assertEquals(self.ha.run_cycle(), 'demoting self because i do not have the lock and i was a leader')
|
|
|
|
def test_follow_the_leader(self):
|
|
self.ha.cluster.is_unlocked = false
|
|
self.p.is_leader = false
|
|
self.assertEquals(self.ha.run_cycle(), 'no action. i am a secondary and i am following a leader')
|
|
|
|
def test_no_etcd_connection_master_demote(self):
|
|
self.ha.load_cluster_from_dcs = dead_etcd
|
|
self.assertEquals(self.ha.run_cycle(), 'demoted self because DCS is not accessible and i was a leader')
|