def test_is_ready_mismatch(self):
# The relation is not ready if database settings (such as the
# database name) have not been mirrored back.
for k in ["database", "roles", "extensions"]:
with self.subTest(f"{k} mismatch"):
# Requested setting should be available in application
# shared data. This could be leadership data or a peer
# relation application databag.
self.assertFalse(
client._is_ready(
self.log,
{k: "value"},
{"egress-subnets": "127.23.0.0/24"},
{"allowed-subnets": "127.23.1.0/24"},
))
self.assertFalse(
client._is_ready(
self.log,
{k: "value"},
{"egress-subnets": "127.23.0.0/24"},
{
"allowed-subnets": "127.23.1.0/24",
k: "different"
},
))
def test_is_ready_no_allowed(self):
# The relation is not ready if allowed-subnets does not contain our egress-subnets.
# The remote end has not yet granted the local unit access.
self.assertFalse(
client._is_ready(self.log, {}, {"egress-subnets": "127.23.0.0/24"},
{}))
self.assertFalse(
client._is_ready(self.log, {}, {"egress-subnets": "127.23.0.0/24"},
{"allowed-subnets": "127.0.1/24"}))
def test_is_ready_no_egress(self):
# The relation is considered ready if the client has published
# no egress-subnets. This unexpected result is to support old
# versions of Juju that predate cross-model relation support.
# This should not happen with supported Juju versions.
self.assertTrue(client._is_ready(self.log, {}, {}, {}))
self.assertTrue(
client._is_ready(self.log, {}, {},
{"allowed-subnets": "127.23.0.0/24"}))
def test_is_ready_match(self):
# The relation is ready if its egress has been allowed access and its
# settings have been mirrored back, indicating they have been applied.
app = {}
loc = {"egress-subnets": "127.0.0.0/24"}
rel = {"allowed-subnets": "127.0.0.0/24"}
for k in ["database", "roles", "extensions"]:
with self.subTest(f"{k} match"):
# Requested setting should be available in application
# shared data. This could be leadership data or a peer
# relation application databag.
app[k] = "value"
self.assertFalse(client._is_ready(self.log, app, loc, rel))
rel[k] = "value"
self.assertTrue(client._is_ready(self.log, app, loc, rel))
def test_is_ready_default_dbname(self):
# If no database name has been requested, the relation is ready
# no matter what the published database name is. Ideally
# the PostgreSQL charm mirrors back the client setting
# identically (like "roles" and "extensions"), but some legacy
# clients still use the "database" field to construct their own
# connection strings rather than using the connection strings
# provided on the relation.
app = {}
loc = {"egress-subnets": "127.0.0.0/24"}
rel = {"allowed-subnets": "127.0.0.0/24"}
app["database"] = "" # Empty string is the default
app["roles"] = "value"
self.assertFalse(client._is_ready(self.log, app, loc, rel))
rel["roles"] = "value"
rel["database"] = "whatever"
self.assertTrue(client._is_ready(self.log, app, loc, rel))
def test_is_ready_defaults(self):
# allowed-subnets grants access, and default database settings requested.
self.assertTrue(
client._is_ready(
self.log, {}, {"egress-subnets": "127.23.1.0/24"},
{"allowed-subnets": "127.23.0.0/24,127.23.1.0/24"}))