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Add portable NPM reconciliation policies

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This commit is contained in:
Lyncoln
2026-09-20 01:05:34 -04:00
parent c4cdc92865
commit 3022b76876
3 changed files with 813 additions and 8 deletions
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tests/test_reconciliation.py
+298 -3
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@@ -4,12 +4,15 @@ from datetime import datetime, timezone
from dns_sync.adapters import (
CERTIFICATES,
DNS_RECORDS,
PROXY_HOSTS,
NormalizedObject,
ObjectReference,
Observation,
)
from dns_sync.reconciliation import (
ReconciliationConflict,
group_observations,
logicalize_observation_references,
reconcile_observations,
)
@@ -166,12 +169,12 @@ class DnsUnionPolicyTests(unittest.TestCase):
def test_missing_policy_fails_explicitly(self):
observation = Observation(
endpoint_id="npm://node-one:81",
endpoint_id="generic://node-one",
object=NormalizedObject(
object_type=CERTIFICATES,
object_type="unknown_objects",
logical_key="app.example.com",
local_key="67",
payload={"expires_on": "2026-12-15"},
payload={},
),
observed_at=NOW,
)
@@ -182,6 +185,298 @@ class DnsUnionPolicyTests(unittest.TestCase):
):
reconcile_observations([observation])
def test_local_certificate_references_become_logical_references(self):
observations = [
Observation(
endpoint_id="npm://node-one:81",
object=NormalizedObject(
object_type=CERTIFICATES,
logical_key="app.example.com",
local_key="67",
payload={
"domain_names": ["app.example.com"],
"valid_from": "2026-09-01T00:00:00+00:00",
"expires_on": "2026-12-01T00:00:00+00:00",
},
),
observed_at=NOW,
),
Observation(
endpoint_id="npm://node-one:81",
object=NormalizedObject(
object_type=PROXY_HOSTS,
logical_key="app.example.com",
local_key="12",
payload={
"domain_names": ["app.example.com"],
"forward_scheme": "http",
"forward_host": "backend.internal",
"forward_port": 8080,
"enabled": True,
},
references=(
ObjectReference(
relation="certificate",
object_type=CERTIFICATES,
local_key="67",
),
),
),
observed_at=NOW,
),
]
logicalized = logicalize_observation_references(
observations
)
proxy = next(
row.object
for row in logicalized
if row.object.object_type == PROXY_HOSTS
)
self.assertEqual(
proxy.references,
(
ObjectReference(
relation="certificate",
object_type=CERTIFICATES,
logical_key="app.example.com",
),
),
)
def test_unresolved_local_reference_fails_closed(self):
observation = Observation(
endpoint_id="npm://node-one:81",
object=NormalizedObject(
object_type=PROXY_HOSTS,
logical_key="app.example.com",
local_key="12",
payload={
"domain_names": ["app.example.com"],
"forward_scheme": "http",
"forward_host": "backend.internal",
"forward_port": 8080,
},
references=(
ObjectReference(
relation="certificate",
object_type=CERTIFICATES,
local_key="999",
),
),
),
observed_at=NOW,
)
with self.assertRaisesRegex(
ReconciliationConflict,
"Unresolved endpoint-local reference",
):
reconcile_observations([observation])
def test_certificate_policy_selects_newest_expiry(self):
observations = [
Observation(
endpoint_id="npm://node-one:81",
object=NormalizedObject(
object_type=CERTIFICATES,
logical_key="app.example.com",
local_key="10",
payload={
"domain_names": ["app.example.com"],
"provider": "other",
"nice_name": "older",
"valid_from": "2026-06-01T00:00:00+00:00",
"expires_on": "2026-09-01T00:00:00+00:00",
},
),
observed_at=NOW,
),
Observation(
endpoint_id="npm://node-two:81",
object=NormalizedObject(
object_type=CERTIFICATES,
logical_key="app.example.com",
local_key="44",
payload={
"domain_names": ["app.example.com"],
"provider": "letsencrypt",
"nice_name": "newer",
"valid_from": "2026-09-01T00:00:00+00:00",
"expires_on": "2026-12-01T00:00:00+00:00",
},
),
observed_at=NOW,
),
]
desired = reconcile_observations(observations)
self.assertEqual(len(desired), 1)
self.assertEqual(
desired[0].payload["expires_on"],
"2026-12-01T00:00:00+00:00",
)
self.assertEqual(
desired[0].payload["provider"],
"letsencrypt",
)
self.assertIsNone(desired[0].local_key)
def test_certificate_same_expiry_conflict_fails_closed(self):
observations = [
Observation(
endpoint_id="npm://node-one:81",
object=NormalizedObject(
object_type=CERTIFICATES,
logical_key="app.example.com",
local_key="10",
payload={
"domain_names": ["app.example.com"],
"valid_from": "2026-08-01T00:00:00+00:00",
"expires_on": "2026-12-01T00:00:00+00:00",
},
),
observed_at=NOW,
),
Observation(
endpoint_id="npm://node-two:81",
object=NormalizedObject(
object_type=CERTIFICATES,
logical_key="app.example.com",
local_key="44",
payload={
"domain_names": ["app.example.com"],
"valid_from": "2026-09-01T00:00:00+00:00",
"expires_on": "2026-12-01T00:00:00+00:00",
},
),
observed_at=NOW,
),
]
with self.assertRaisesRegex(
ReconciliationConflict,
"newest expiry",
):
reconcile_observations(observations)
def test_proxy_consensus_ignores_different_endpoint_local_certificate_ids(self):
observations = []
for endpoint_id, certificate_id, proxy_id in (
("npm://node-one:81", "67", "12"),
("npm://node-two:81", "84", "31"),
):
observations.extend(
[
Observation(
endpoint_id=endpoint_id,
object=NormalizedObject(
object_type=CERTIFICATES,
logical_key="app.example.com",
local_key=certificate_id,
payload={
"domain_names": ["app.example.com"],
"valid_from": "2026-09-01T00:00:00+00:00",
"expires_on": "2026-12-01T00:00:00+00:00",
},
),
observed_at=NOW,
),
Observation(
endpoint_id=endpoint_id,
object=NormalizedObject(
object_type=PROXY_HOSTS,
logical_key="app.example.com",
local_key=proxy_id,
payload={
"domain_names": ["app.example.com"],
"forward_scheme": "http",
"forward_host": "backend.internal",
"forward_port": 8080,
"enabled": True,
},
references=(
ObjectReference(
relation="certificate",
object_type=CERTIFICATES,
local_key=certificate_id,
),
),
),
observed_at=NOW,
),
]
)
desired = reconcile_observations(observations)
proxy = next(
object
for object in desired
if object.object_type == PROXY_HOSTS
)
self.assertEqual(
proxy.references,
(
ObjectReference(
relation="certificate",
object_type=CERTIFICATES,
logical_key="app.example.com",
),
),
)
def test_proxy_consensus_rejects_backend_drift_without_payload_output(self):
observations = [
Observation(
endpoint_id="npm://node-one:81",
object=NormalizedObject(
object_type=PROXY_HOSTS,
logical_key="app.example.com",
local_key="12",
payload={
"domain_names": ["app.example.com"],
"forward_scheme": "http",
"forward_host": "one.internal",
"forward_port": 8080,
},
),
observed_at=NOW,
),
Observation(
endpoint_id="npm://node-two:81",
object=NormalizedObject(
object_type=PROXY_HOSTS,
logical_key="app.example.com",
local_key="31",
payload={
"domain_names": ["app.example.com"],
"forward_scheme": "http",
"forward_host": "two.internal",
"forward_port": 8080,
},
),
observed_at=NOW,
),
]
with self.assertRaises(ReconciliationConflict) as raised:
reconcile_observations(observations)
message = str(raised.exception)
self.assertIn("app.example.com", message)
self.assertIn("npm://node-one:81", message)
self.assertIn("npm://node-two:81", message)
self.assertNotIn("one.internal", message)
self.assertNotIn("two.internal", message)
def test_explicit_empty_policy_registry_uses_no_defaults(self):
observation = dns_observation(
"npm://node-one:81",