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patronictl add ability to print ASCII topology (#1576)

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Example:
```bash
$ patronictl topology
+ Cluster: batman (6834835313225022118) -----+---------+----+-----------+------------------------------------------------+
| Member          |      Host      |   Role  |  State  | TL | Lag in MB | Tags                                           |
+-----------------+----------------+---------+---------+----+-----------+------------------------------------------------+
| postgresql0     | localhost:5432 |  Leader | running |  2 |           |                                                |
| + postgresql1   | localhost:5433 | Replica | running |  2 |       0.0 |                                                |
|   + postgresql2 | localhost:5434 | Replica | running |  2 |       0.0 | {nofailover: true, replicatefrom: postgresql1} |
+-----------------+----------------+---------+---------+----+-----------+------------------------------------------------+
```
This commit is contained in:
Maxim Fedotov
2020-06-12 15:23:42 +02:00
committed by GitHub
parent 2d5c8e0067
commit 623b594539
2 changed files with 77 additions and 8 deletions
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tests/test_ctl.py
+31 -1
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@@ -73,7 +73,7 @@ class TestCtl(unittest.TestCase):
scheduled_at = datetime.now(tzutc) + timedelta(seconds=600)
cluster = get_cluster_initialized_with_leader(Failover(1, 'foo', 'bar', scheduled_at))
del cluster.members[1].data['conn_url']
for fmt in ('pretty', 'json', 'yaml', 'tsv'):
for fmt in ('pretty', 'json', 'yaml', 'tsv', 'topology'):
self.assertIsNone(output_members(cluster, name='abc', fmt=fmt))
@patch('patroni.ctl.get_dcs')
@@ -417,6 +417,36 @@ class TestCtl(unittest.TestCase):
assert '2100' in result.output
assert 'Scheduled restart' in result.output
@patch('patroni.ctl.get_dcs')
def test_topology(self, mock_get_dcs):
mock_get_dcs.return_value = self.e
cluster = get_cluster_initialized_with_leader()
cascade_member = Member(0, 'cascade', 28, {'conn_url': 'postgres://replicator:[email protected]:5437/postgres',
'api_url': 'http://127.0.0.1:8012/patroni',
'state': 'running',
'tags': {'replicatefrom': 'other'},
})
cascade_member_wrong_tags = Member(0, 'wrong_cascade', 28,
{'conn_url': 'postgres://replicator:[email protected]:5438/postgres',
'api_url': 'http://127.0.0.1:8013/patroni',
'state': 'running',
'tags': {'replicatefrom': 'nonexistinghost'},
})
cluster.members.append(cascade_member)
cluster.members.append(cascade_member_wrong_tags)
mock_get_dcs.return_value.get_cluster = Mock(return_value=cluster)
result = self.runner.invoke(ctl, ['topology', 'dummy'])
assert '+\n| leader | 127.0.0.1:5435 | Leader |' in result.output
assert '|\n| + other | 127.0.0.1:5436 | Replica |' in result.output
assert '|\n| + cascade | 127.0.0.1:5437 | Replica |' in result.output
assert '|\n| + wrong_cascade | 127.0.0.1:5438 | Replica |' in result.output
cluster = get_cluster_initialized_without_leader()
mock_get_dcs.return_value.get_cluster = Mock(return_value=cluster)
result = self.runner.invoke(ctl, ['topology', 'dummy'])
assert '+\n| + leader | 127.0.0.1:5435 | Replica |' in result.output
assert '|\n| + other | 127.0.0.1:5436 | Replica |' in result.output
@patch('patroni.ctl.get_dcs')
@patch.object(PoolManager, 'request', Mock(return_value=MockResponse()))
def test_flush(self, mock_get_dcs):