def setUp(self):
"""Run before tests."""
region = "us-east-1"
self.session = get_session(region=region)
self.provider = Provider(self.session,
interactive=True,
recreate_failed=True)
self.stubber = Stubber(self.provider.cloudformation)
def test_get_delete_failed_status_reason(self, mocker: MockerFixture) -> None:
"""Test get_delete_failed_status_reason."""
mock_get_event_by_resource_status = mocker.patch.object(
Provider,
"get_event_by_resource_status",
side_effect=[{"ResourceStatusReason": "reason"}, {}],
)
obj = Provider(MagicMock())
assert obj.get_delete_failed_status_reason("test") == "reason"
mock_get_event_by_resource_status.assert_called_once_with(
"test", "DELETE_FAILED", chronological=True
)
assert not obj.get_delete_failed_status_reason("test")
def test_ensure_cfn_bucket_does_not_exist_us_west(self):
"""Test ensure cfn bucket does not exist us west."""
session = get_session("us-west-1")
provider = Provider(session)
action = BaseAction(
context=mock_context("mynamespace"),
provider_builder=MockProviderBuilder(provider, region="us-west-1"),
)
stubber = Stubber(action.s3_conn)
stubber.add_client_error(
"head_bucket",
service_error_code="NoSuchBucket",
service_message="Not Found",
http_status_code=404,
)
stubber.add_response(
"create_bucket",
service_response={},
expected_params={
"Bucket": ANY,
"CreateBucketConfiguration": {
"LocationConstraint": "us-west-1"
},
},
)
with stubber:
action.ensure_cfn_bucket()
def test_stack_template_url(self):
"""Test stack template url."""
context = mock_context("mynamespace")
blueprint = MockBlueprint(name="myblueprint", context=context)
region = "us-east-1"
endpoint = "https://example.com"
session = get_session(region)
provider = Provider(session)
action = BaseAction(
context=context,
provider_builder=MockProviderBuilder(provider, region=region),
)
with patch(
"runway.cfngin.actions.base.get_s3_endpoint",
autospec=True,
return_value=endpoint,
):
self.assertEqual(
action.stack_template_url(blueprint),
"%s/%s/stack_templates/%s/%s-%s.json" % (
endpoint,
"stacker-mynamespace",
"mynamespace-myblueprint",
"myblueprint",
MOCK_VERSION,
),
)
def setUp(self):
"""Run before tests."""
self.region = "us-east-1"
self.session = get_session(self.region)
self.provider = Provider(self.session)
self.config_no_persist = {
"stacks": [{
"name": "stack1"
}, {
"name": "stack2",
"requires": ["stack1"]
}]
}
self.config_persist = {
"persistent_graph_key":
"test.json",
"stacks": [{
"name": "stack1"
}, {
"name": "stack2",
"requires": ["stack1"]
}],
}
def test_successful_init(self):
"""Test successful init."""
replacements = True
provider = Provider(self.session,
interactive=True,
replacements_only=replacements)
self.assertEqual(provider.replacements_only, replacements)
def test_is_stack_destroy_possible(self, expected: bool, status: str) -> None:
"""Test is_stack_destroy_possible."""
assert (
Provider(MagicMock()).is_stack_destroy_possible(
generate_describe_stacks_stack("test", stack_status=status) # type: ignore
)
is expected
)
def setUp(self) -> None:
"""Run before tests."""
self.context = self._get_context()
self.session = get_session(region=None)
self.provider = Provider(self.session,
interactive=False,
recreate_failed=False)
provider_builder = MockProviderBuilder(provider=self.provider)
self.deploy_action = deploy.Action(
self.context,
provider_builder=provider_builder,
cancel=MockThreadingEvent(), # type: ignore
)
self.stack = MagicMock()
self.stack.region = None
self.stack.name = "vpc"
self.stack.fqn = "vpc"
self.stack.blueprint.rendered = "{}"
self.stack.locked = False
self.stack_status = None
plan = cast(
Plan, self.deploy_action._Action__generate_plan()) # type: ignore
self.step = plan.steps[0]
self.step.stack = self.stack
def patch_object(*args: Any, **kwargs: Any) -> None:
mock_object = patch.object(*args, **kwargs)
self.addCleanup(mock_object.stop)
mock_object.start()
def get_stack(name: str, *_args: Any,
**_kwargs: Any) -> Dict[str, Any]:
if name != self.stack.name or not self.stack_status:
raise StackDoesNotExist(name)
return {
"StackName": self.stack.name,
"StackStatus": self.stack_status,
"Outputs": [],
"Tags": [],
}
def get_events(name: str, *_args: Any,
**_kwargs: Any) -> List[Dict[str, str]]:
return [{
"ResourceStatus": "ROLLBACK_IN_PROGRESS",
"ResourceStatusReason": "CFN fail",
}]
patch_object(self.provider, "get_stack", side_effect=get_stack)
patch_object(self.provider, "update_stack")
patch_object(self.provider, "create_stack")
patch_object(self.provider, "destroy_stack")
patch_object(self.provider, "get_events", side_effect=get_events)
patch_object(self.deploy_action, "s3_stack_push")
def setUp(self):
"""Run before tests."""
self.context = self._get_context()
self.session = get_session(region=None)
self.provider = Provider(self.session,
interactive=False,
recreate_failed=False)
provider_builder = MockProviderBuilder(self.provider)
self.build_action = build.Action(self.context,
provider_builder=provider_builder,
cancel=MockThreadingEvent())
self.stack = MagicMock()
self.stack.region = None
self.stack.name = 'vpc'
self.stack.fqn = 'vpc'
self.stack.blueprint.rendered = '{}'
self.stack.locked = False
self.stack_status = None
plan = self.build_action._Action__generate_plan()
self.step = plan.steps[0]
self.step.stack = self.stack
def patch_object(*args, **kwargs):
mock_object = patch.object(*args, **kwargs)
self.addCleanup(mock_object.stop)
mock_object.start()
def get_stack(name, *args, **kwargs):
if name != self.stack.name or not self.stack_status:
raise StackDoesNotExist(name)
return {
'StackName': self.stack.name,
'StackStatus': self.stack_status,
'Outputs': [],
'Tags': []
}
def get_events(name, *args, **kwargs):
return [{
'ResourceStatus': 'ROLLBACK_IN_PROGRESS',
'ResourceStatusReason': 'CFN fail'
}]
patch_object(self.provider, 'get_stack', side_effect=get_stack)
patch_object(self.provider, 'update_stack')
patch_object(self.provider, 'create_stack')
patch_object(self.provider, 'destroy_stack')
patch_object(self.provider, 'get_events', side_effect=get_events)
patch_object(self.build_action, "s3_stack_push")
def test_get_event_by_resource_status(self, mocker: MockerFixture) -> None:
"""Test get_event_by_resource_status."""
events = [
{"StackName": "0"},
{"StackName": "1", "ResourceStatus": "no match"},
{"StackName": "2", "ResourceStatus": "match"},
{"StackName": "3", "ResourceStatus": "match"},
]
mock_get_events = mocker.patch.object(
Provider, "get_events", return_value=events
)
obj = Provider(MagicMock())
result = obj.get_event_by_resource_status("test", "match")
assert result
assert result["StackName"] == "2"
mock_get_events.assert_called_once_with("test", chronological=True)
assert not obj.get_event_by_resource_status(
"test", "missing", chronological=False
)
mock_get_events.assert_called_with("test", chronological=False)
def test_ensure_cfn_bucket_exists(self):
"""Test ensure cfn bucket exists."""
session = get_session("us-east-1")
provider = Provider(session)
action = BaseAction(
context=mock_context("mynamespace"),
provider_builder=MockProviderBuilder(provider),
)
stubber = Stubber(action.s3_conn)
stubber.add_response("head_bucket",
service_response={},
expected_params={"Bucket": ANY})
with stubber:
action.ensure_cfn_bucket()
def test_get_rollback_status_reason(self, mocker: MockerFixture) -> None:
"""Test get_rollback_status_reason."""
mock_get_event_by_resource_status = mocker.patch.object(
Provider,
"get_event_by_resource_status",
side_effect=[
{"ResourceStatusReason": "reason0"},
{},
{"ResourceStatusReason": "reason2"},
{},
{},
],
)
obj = Provider(MagicMock())
assert obj.get_rollback_status_reason("test") == "reason0"
mock_get_event_by_resource_status.assert_called_once_with(
"test", "UPDATE_ROLLBACK_IN_PROGRESS", chronological=False
)
assert obj.get_rollback_status_reason("test") == "reason2"
mock_get_event_by_resource_status.assert_called_with(
"test", "ROLLBACK_IN_PROGRESS", chronological=True
)
assert not obj.get_rollback_status_reason("test")
def test_ensure_cfn_forbidden(self):
"""Test ensure cfn forbidden."""
session = get_session("us-west-1")
provider = Provider(session)
action = BaseAction(context=mock_context("mynamespace"),
provider_builder=MockProviderBuilder(provider))
stubber = Stubber(action.s3_conn)
stubber.add_client_error(
"head_bucket",
service_error_code="AccessDenied",
service_message="Forbidden",
http_status_code=403,
)
with stubber:
with self.assertRaises(botocore.exceptions.ClientError):
action.ensure_cfn_bucket()
def test_ensure_cfn_bucket_does_not_exist_us_east(self) -> None:
"""Test ensure cfn bucket does not exist us east."""
session = get_session("us-east-1")
provider = Provider(session)
action = BaseAction(
context=mock_context("mynamespace"),
provider_builder=MockProviderBuilder(provider=provider),
)
stubber = Stubber(action.s3_conn)
stubber.add_client_error(
"head_bucket",
service_error_code="NoSuchBucket",
service_message="Not Found",
http_status_code=404,
)
stubber.add_response("create_bucket",
service_response={},
expected_params={"Bucket": ANY})
with stubber:
action.ensure_cfn_bucket()
def test_diff_stack_validationerror_template_too_large(
self,
caplog: LogCaptureFixture,
cfngin_context: MockCFNginContext,
monkeypatch: MonkeyPatch,
) -> None:
"""Test _diff_stack ValidationError - template too large."""
caplog.set_level(logging.ERROR)
cfngin_context.add_stubber("cloudformation")
cfngin_context.config.cfngin_bucket = ""
expected = SkippedStatus("cfngin_bucket: existing bucket required")
provider = Provider(cfngin_context.get_session()) # type: ignore
mock_get_stack_changes = MagicMock(
side_effect=ClientError(
{
"Error": {
"Code": "ValidationError",
"Message": "length less than or equal to",
}
},
"create_change_set",
)
)
monkeypatch.setattr(provider, "get_stack_changes", mock_get_stack_changes)
stack = MagicMock()
stack.region = cfngin_context.env.aws_region
stack.name = "test-stack"
stack.fqn = "test-stack"
stack.blueprint.rendered = "{}"
stack.locked = False
stack.status = None
result = Action(
context=cfngin_context,
provider_builder=MockProviderBuilder(provider=provider),
cancel=MockThreadingEvent(), # type: ignore
)._diff_stack(stack)
mock_get_stack_changes.assert_called_once()
assert result == expected
def setUp(self):
"""Run before tests."""
self.region = 'us-east-1'
self.session = get_session(self.region)
self.provider = Provider(self.session)
self.config_no_persist = {
'stacks': [
{'name': 'stack1'},
{'name': 'stack2',
'requires': ['stack1']}
]
}
self.config_persist = {
'persistent_graph_key': 'test.json',
'stacks': [
{'name': 'stack1'},
{'name': 'stack2',
'requires': ['stack1']}
]
}
def test_get_stack_status_reason(self) -> None:
"""Test get_stack_status_reason."""
stack_details = generate_describe_stacks_stack("test")
assert Provider.get_stack_status_reason(stack_details) is None
stack_details["StackStatusReason"] = "reason"
assert Provider.get_stack_status_reason(stack_details) == "reason"
class TestProviderDefaultMode(unittest.TestCase):
"""Tests for runway.cfngin.providers.aws.default default mode."""
def setUp(self) -> None:
"""Run before tests."""
region = "us-east-1"
self.session = get_session(region=region)
self.provider = Provider(self.session, region=region, recreate_failed=False)
self.stubber = Stubber(self.provider.cloudformation)
def test_create_stack_no_changeset(self) -> None:
"""Test create_stack, no changeset, template url."""
stack_name = "fake_stack"
template = Template(url="http://fake.template.url.com/")
parameters: List[Any] = []
tags: List[Any] = []
expected_args = generate_cloudformation_args(
stack_name, parameters, tags, template
)
expected_args["EnableTerminationProtection"] = False
expected_args["TimeoutInMinutes"] = 60
self.stubber.add_response(
"create_stack", {"StackId": stack_name}, expected_args
)
with self.stubber:
self.provider.create_stack(
stack_name, template, parameters, tags, timeout=60
)
self.stubber.assert_no_pending_responses()
@patch("runway.cfngin.providers.aws.default.Provider.update_termination_protection")
@patch("runway.cfngin.providers.aws.default.create_change_set")
def test_create_stack_with_changeset(
self, patched_create_change_set: MagicMock, patched_update_term: MagicMock
) -> None:
"""Test create_stack, force changeset, termination protection."""
stack_name = "fake_stack"
template_path = Path("./tests/unit/cfngin/fixtures/cfn_template.yaml")
template = Template(body=template_path.read_text())
parameters: List[Any] = []
tags: List[Any] = []
changeset_id = "CHANGESETID"
patched_create_change_set.return_value = ([], changeset_id)
self.stubber.add_response(
"execute_change_set", {}, {"ChangeSetName": changeset_id}
)
with self.stubber:
self.provider.create_stack(
stack_name,
template,
parameters,
tags,
force_change_set=True,
termination_protection=True,
)
self.stubber.assert_no_pending_responses()
patched_create_change_set.assert_called_once_with(
self.provider.cloudformation,
stack_name,
template,
parameters,
tags,
"CREATE",
service_role=self.provider.service_role,
)
patched_update_term.assert_called_once_with(stack_name, True)
def test_destroy_stack(self) -> None:
"""Test destroy stack."""
stack = {"StackName": "MockStack"}
self.stubber.add_response("delete_stack", {}, stack)
with self.stubber:
self.assertIsNone(self.provider.destroy_stack(stack)) # type: ignore
self.stubber.assert_no_pending_responses()
def test_get_stack_stack_does_not_exist(self) -> None:
"""Test get stack stack does not exist."""
stack_name = "MockStack"
self.stubber.add_client_error(
"describe_stacks",
service_error_code="ValidationError",
service_message="Stack with id %s does not exist" % stack_name,
expected_params={"StackName": stack_name},
)
with self.assertRaises(exceptions.StackDoesNotExist):
with self.stubber:
self.provider.get_stack(stack_name)
def test_get_stack_stack_exists(self) -> None:
"""Test get stack stack exists."""
stack_name = "MockStack"
stack_response = {"Stacks": [generate_describe_stacks_stack(stack_name)]}
self.stubber.add_response(
"describe_stacks", stack_response, expected_params={"StackName": stack_name}
)
with self.stubber:
response = self.provider.get_stack(stack_name)
self.assertEqual(response["StackName"], stack_name)
def test_select_destroy_method(self) -> None:
"""Test select destroy method."""
for i in [
[{"force_interactive": False}, self.provider.noninteractive_destroy_stack],
[{"force_interactive": True}, self.provider.interactive_destroy_stack],
]:
self.assertEqual(
self.provider.select_destroy_method(**i[0]), i[1] # type: ignore
)
def test_select_update_method(self) -> None:
"""Test select update method."""
for i in [
[
{"force_interactive": True, "force_change_set": False},
self.provider.interactive_update_stack,
],
[
{"force_interactive": False, "force_change_set": False},
self.provider.default_update_stack,
],
[
{"force_interactive": False, "force_change_set": True},
self.provider.noninteractive_changeset_update,
],
[
{"force_interactive": True, "force_change_set": True},
self.provider.interactive_update_stack,
],
]:
self.assertEqual(
self.provider.select_update_method(**i[0]), i[1] # type: ignore
)
def test_prepare_stack_for_update_completed(self) -> None:
"""Test prepare stack for update completed."""
with self.stubber:
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="UPDATE_COMPLETE"
)
self.assertTrue(self.provider.prepare_stack_for_update(stack, []))
def test_prepare_stack_for_update_in_progress(self) -> None:
"""Test prepare stack for update in progress."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="UPDATE_IN_PROGRESS"
)
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack, [])
self.assertIn("in-progress", str(raised.exception))
def test_prepare_stack_for_update_non_recreatable(self) -> None:
"""Test prepare stack for update non recreatable."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="REVIEW_IN_PROGRESS"
)
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack, [])
self.assertIn("Unsupported state", str(raised.exception))
def test_prepare_stack_for_update_disallowed(self) -> None:
"""Test prepare stack for update disallowed."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="ROLLBACK_COMPLETE"
)
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack, [])
self.assertIn("re-creation is disabled", str(raised.exception))
# Ensure we point out to the user how to enable re-creation
self.assertIn("--recreate-failed", str(raised.exception))
def test_prepare_stack_for_update_bad_tags(self) -> None:
"""Test prepare stack for update bad tags."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="ROLLBACK_COMPLETE"
)
self.provider.recreate_failed = True
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(
stack, tags=[{"Key": "cfngin_namespace", "Value": "test"}]
)
self.assertIn("tags differ", str(raised.exception).lower())
def test_prepare_stack_for_update_recreate(self) -> None:
"""Test prepare stack for update recreate."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="ROLLBACK_COMPLETE"
)
self.stubber.add_response(
"delete_stack", {}, expected_params={"StackName": stack_name}
)
self.provider.recreate_failed = True
with self.stubber:
self.assertFalse(self.provider.prepare_stack_for_update(stack, []))
def test_noninteractive_changeset_update_no_stack_policy(self) -> None:
"""Test noninteractive changeset update no stack policy."""
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": "STACKID"}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("execute_change_set", {})
with self.stubber:
stack_name = "MockStack"
self.provider.noninteractive_changeset_update(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
stack_policy=None,
tags=[],
)
def test_noninteractive_changeset_update_with_stack_policy(self) -> None:
"""Test noninteractive changeset update with stack policy."""
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": "STACKID"}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("set_stack_policy", {})
self.stubber.add_response("execute_change_set", {})
with self.stubber:
stack_name = "MockStack"
self.provider.noninteractive_changeset_update(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
stack_policy=Template(body="{}"),
tags=[],
)
def test_noninteractive_destroy_stack_termination_protected(self) -> None:
"""Test noninteractive_destroy_stack with termination protection."""
self.stubber.add_client_error("delete_stack")
with self.stubber, self.assertRaises(ClientError):
self.provider.noninteractive_destroy_stack("fake-stack")
self.stubber.assert_no_pending_responses()
@patch("runway.cfngin.providers.aws.default.output_full_changeset")
def test_get_stack_changes_update(self, mock_output_full_cs: MagicMock) -> None:
"""Test get stack changes update."""
stack_name = "MockStack"
mock_stack = generate_stack_object(stack_name)
self.stubber.add_response(
"describe_stacks", {"Stacks": [generate_describe_stacks_stack(stack_name)]}
)
self.stubber.add_response(
"get_template", generate_get_template("cfn_template.yaml")
)
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": stack_name}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("delete_change_set", {})
self.stubber.add_response(
"describe_stacks", {"Stacks": [generate_describe_stacks_stack(stack_name)]}
)
with self.stubber:
result = self.provider.get_stack_changes(
stack=mock_stack,
template=Template(url="http://fake.template.url.com/"),
parameters=[],
tags=[],
)
mock_output_full_cs.assert_called_with(
full_changeset=changes, params_diff=[], fqn=stack_name, answer="y"
)
expected_outputs = {
"FakeOutput": "<inferred-change: MockStack.FakeOutput={}>".format(
str({"Ref": "FakeResource"})
)
}
self.assertEqual(self.provider.get_outputs(stack_name), expected_outputs)
self.assertEqual(result, expected_outputs)
@patch("runway.cfngin.providers.aws.default.output_full_changeset")
def test_get_stack_changes_create(self, mock_output_full_cs: MagicMock) -> None:
"""Test get stack changes create."""
stack_name = "MockStack"
mock_stack = generate_stack_object(stack_name)
self.stubber.add_response(
"describe_stacks",
{
"Stacks": [
generate_describe_stacks_stack(
stack_name, stack_status="REVIEW_IN_PROGRESS"
)
]
},
)
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": stack_name}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("delete_change_set", {})
self.stubber.add_response(
"describe_stacks",
{
"Stacks": [
generate_describe_stacks_stack(
stack_name, stack_status="REVIEW_IN_PROGRESS"
)
]
},
)
self.stubber.add_response(
"describe_stacks",
{
"Stacks": [
generate_describe_stacks_stack(
stack_name, stack_status="REVIEW_IN_PROGRESS"
)
]
},
)
self.stubber.add_response("delete_stack", {})
with self.stubber:
self.provider.get_stack_changes(
stack=mock_stack,
template=Template(url="http://fake.template.url.com/"),
parameters=[],
tags=[],
)
mock_output_full_cs.assert_called_with(
full_changeset=changes, params_diff=[], fqn=stack_name, answer="y"
)
def test_tail_stack_retry_on_missing_stack(self) -> None:
"""Test tail stack retry on missing stack."""
stack_name = "SlowToCreateStack"
stack = MagicMock(spec=Stack)
stack.fqn = "my-namespace-{}".format(stack_name)
default.TAIL_RETRY_SLEEP = 0.01
# Ensure the stack never appears before we run out of retries
for i in range(MAX_TAIL_RETRIES + 5):
self.stubber.add_client_error(
"describe_stack_events",
service_error_code="ValidationError",
service_message="Stack [{}] does not exist".format(stack_name),
http_status_code=400,
response_meta={"attempt": i + 1},
)
with self.stubber:
try:
self.provider.tail_stack(stack, threading.Event())
except ClientError as exc:
self.assertEqual(
exc.response["ResponseMetadata"]["attempt"], MAX_TAIL_RETRIES
)
def test_tail_stack_retry_on_missing_stack_eventual_success(self) -> None:
"""Test tail stack retry on missing stack eventual success."""
stack_name = "SlowToCreateStack"
stack = MagicMock(spec=Stack)
stack.fqn = "my-namespace-{}".format(stack_name)
default.TAIL_RETRY_SLEEP = 0.01
default.GET_EVENTS_SLEEP = 0.01
received_events: List[Any] = []
def mock_log_func(event: Any) -> None:
received_events.append(event)
def valid_event_response(stack: Stack, event_id: str) -> Dict[str, Any]:
return {
"StackEvents": [
{
"StackId": stack.fqn + "12345",
"EventId": event_id,
"StackName": stack.fqn,
"Timestamp": datetime.now(),
},
]
}
# Ensure the stack never appears before we run out of retries
for i in range(3):
self.stubber.add_client_error(
"describe_stack_events",
service_error_code="ValidationError",
service_message="Stack [{}] does not exist".format(stack_name),
http_status_code=400,
response_meta={"attempt": i + 1},
)
self.stubber.add_response(
"describe_stack_events", valid_event_response(stack, "InitialEvents")
)
self.stubber.add_response(
"describe_stack_events", valid_event_response(stack, "Event1")
)
with self.stubber:
try:
self.provider.tail_stack(
stack, threading.Event(), log_func=mock_log_func
)
except UnStubbedResponseError:
# Eventually we run out of responses - could not happen in
# regular execution
# normally this would just be dealt with when the threads were
# shutdown, but doing so here is a little difficult because
# we can't control the `tail_stack` loop
pass
self.assertEqual(received_events[0]["EventId"], "Event1")
def test_update_termination_protection(self) -> None:
"""Test update_termination_protection."""
stack_name = "fake-stack"
test_cases = [
MutableMap(aws=False, defined=True, expected=True),
MutableMap(aws=True, defined=False, expected=False),
MutableMap(aws=True, defined=True, expected=None),
MutableMap(aws=False, defined=False, expected=None),
]
for test in test_cases:
self.stubber.add_response(
"describe_stacks",
{
"Stacks": [
generate_describe_stacks_stack(
stack_name, termination_protection=test["aws"]
)
]
},
{"StackName": stack_name},
)
if isinstance(test["expected"], bool):
self.stubber.add_response(
"update_termination_protection",
{"StackId": stack_name},
{
"EnableTerminationProtection": test["expected"],
"StackName": stack_name,
},
)
with self.stubber:
self.provider.update_termination_protection(stack_name, test["defined"])
self.stubber.assert_no_pending_responses()
def setUp(self) -> None:
"""Run before tests."""
region = "us-east-1"
self.session = get_session(region=region)
self.provider = Provider(self.session, region=region, recreate_failed=False)
self.stubber = Stubber(self.provider.cloudformation)
class TestProviderInteractiveMode(unittest.TestCase):
"""Tests for runway.cfngin.providers.aws.default interactive mode."""
def setUp(self) -> None:
"""Run before tests."""
region = "us-east-1"
self.session = get_session(region=region)
self.provider = Provider(self.session, interactive=True, recreate_failed=True)
self.stubber = Stubber(self.provider.cloudformation)
@patch("runway.cfngin.ui.get_raw_input")
def test_interactive_destroy_stack(self, patched_input: MagicMock) -> None:
"""Test interactive_destroy_stack."""
stack_name = "fake-stack"
stack = {"StackName": stack_name}
patched_input.return_value = "y"
self.stubber.add_response("delete_stack", {}, stack)
with self.stubber:
self.assertIsNone(self.provider.interactive_destroy_stack(stack_name))
self.stubber.assert_no_pending_responses()
@patch("runway.cfngin.providers.aws.default.Provider.update_termination_protection")
@patch("runway.cfngin.ui.get_raw_input")
def test_interactive_destroy_stack_termination_protected(
self, patched_input: MagicMock, patched_update_term: MagicMock
) -> None:
"""Test interactive_destroy_stack with termination protection."""
stack_name = "fake-stack"
stack = {"StackName": stack_name}
patched_input.return_value = "y"
self.stubber.add_client_error(
"delete_stack", service_message="TerminationProtection"
)
self.stubber.add_response("delete_stack", {}, stack)
with self.stubber:
self.provider.interactive_destroy_stack(stack_name, approval="y")
self.stubber.assert_no_pending_responses()
patched_input.assert_called_once()
patched_update_term.assert_called_once_with(stack_name, False)
@patch("runway.cfngin.ui.get_raw_input")
def test_destroy_stack_canceled(self, patched_input: MagicMock) -> None:
"""Test destroy stack canceled."""
patched_input.return_value = "n"
with self.assertRaises(exceptions.CancelExecution):
stack = {"StackName": "MockStack"}
self.provider.destroy_stack(stack) # type: ignore
def test_successful_init(self) -> None:
"""Test successful init."""
replacements = True
provider = Provider(
self.session, interactive=True, replacements_only=replacements
)
self.assertEqual(provider.replacements_only, replacements)
@patch("runway.cfngin.providers.aws.default.Provider.update_termination_protection")
@patch("runway.cfngin.providers.aws.default.ask_for_approval")
def test_update_stack_execute_success_no_stack_policy(
self, patched_approval: MagicMock, patched_update_term: MagicMock
) -> None:
"""Test update stack execute success no stack policy."""
stack_name = "my-fake-stack"
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": "STACKID"}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("execute_change_set", {})
with self.stubber:
self.provider.update_stack(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
tags=[],
)
patched_approval.assert_called_once_with(
full_changeset=changes, params_diff=[], include_verbose=True, fqn=stack_name
)
patched_update_term.assert_called_once_with(stack_name, False)
@patch("runway.cfngin.providers.aws.default.Provider.update_termination_protection")
@patch("runway.cfngin.providers.aws.default.ask_for_approval")
def test_update_stack_execute_success_with_stack_policy(
self, patched_approval: MagicMock, patched_update_term: MagicMock
) -> None:
"""Test update stack execute success with stack policy."""
stack_name = "my-fake-stack"
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": "STACKID"}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("set_stack_policy", {})
self.stubber.add_response("execute_change_set", {})
with self.stubber:
self.provider.update_stack(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
tags=[],
stack_policy=Template(body="{}"),
)
patched_approval.assert_called_once_with(
full_changeset=changes, params_diff=[], include_verbose=True, fqn=stack_name
)
patched_update_term.assert_called_once_with(stack_name, False)
def test_select_destroy_method(self) -> None:
"""Test select destroy method."""
for i in [
[{"force_interactive": False}, self.provider.interactive_destroy_stack],
[{"force_interactive": True}, self.provider.interactive_destroy_stack],
]:
self.assertEqual(
self.provider.select_destroy_method(**i[0]), i[1] # type: ignore
)
def test_select_update_method(self) -> None:
"""Test select update method."""
for i in [
[
{"force_interactive": False, "force_change_set": False},
self.provider.interactive_update_stack,
],
[
{"force_interactive": True, "force_change_set": False},
self.provider.interactive_update_stack,
],
[
{"force_interactive": False, "force_change_set": True},
self.provider.interactive_update_stack,
],
[
{"force_interactive": True, "force_change_set": True},
self.provider.interactive_update_stack,
],
]:
self.assertEqual(
self.provider.select_update_method(**i[0]), i[1] # type: ignore
)
@patch("runway.cfngin.providers.aws.default.output_full_changeset")
@patch("runway.cfngin.providers.aws.default.output_summary")
def test_get_stack_changes_interactive(
self, mock_output_summary: MagicMock, mock_output_full_cs: MagicMock
) -> None:
"""Test get stack changes interactive."""
stack_name = "MockStack"
mock_stack = generate_stack_object(stack_name)
self.stubber.add_response(
"describe_stacks", {"Stacks": [generate_describe_stacks_stack(stack_name)]}
)
self.stubber.add_response(
"get_template", generate_get_template("cfn_template.yaml")
)
self.stubber.add_response(
"create_change_set", {"Id": "CHANGESETID", "StackId": stack_name}
)
changes = [generate_change()]
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE", execution_status="AVAILABLE", changes=changes
),
)
self.stubber.add_response("delete_change_set", {})
self.stubber.add_response(
"describe_stacks", {"Stacks": [generate_describe_stacks_stack(stack_name)]}
)
with self.stubber:
self.provider.get_stack_changes(
stack=mock_stack,
template=Template(url="http://fake.template.url.com/"),
parameters=[],
tags=[],
)
mock_output_summary.assert_called_with(
stack_name, "changes", changes, [], replacements_only=False
)
mock_output_full_cs.assert_called_with(
full_changeset=changes, params_diff=[], fqn=stack_name
)
class TestProviderInteractiveMode(unittest.TestCase):
"""Tests for runway.cfngin.providers.aws.default interactive mode."""
def setUp(self):
"""Run before tests."""
region = "us-east-1"
self.session = get_session(region=region)
self.provider = Provider(self.session,
interactive=True,
recreate_failed=True)
self.stubber = Stubber(self.provider.cloudformation)
@patch('runway.cfngin.ui.get_raw_input')
def test_destroy_stack(self, patched_input):
"""Test destroy stack."""
stack = {'StackName': 'MockStack'}
patched_input.return_value = 'y'
self.stubber.add_response('delete_stack', {}, stack)
with self.stubber:
self.assertIsNone(self.provider.destroy_stack(stack))
self.stubber.assert_no_pending_responses()
@patch('runway.cfngin.ui.get_raw_input')
def test_destroy_stack_canceled(self, patched_input):
"""Test destroy stack canceled."""
stack = {'StackName': 'MockStack'}
patched_input.return_value = 'n'
with self.assertRaises(exceptions.CancelExecution):
self.provider.destroy_stack(stack)
def test_successful_init(self):
"""Test successful init."""
replacements = True
provider = Provider(self.session,
interactive=True,
replacements_only=replacements)
self.assertEqual(provider.replacements_only, replacements)
@patch("runway.cfngin.providers.aws.default.ask_for_approval")
def test_update_stack_execute_success_no_stack_policy(
self, patched_approval):
"""Test update stack execute success no stack policy."""
stack_name = "my-fake-stack"
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': 'STACKID'
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("execute_change_set", {})
with self.stubber:
self.provider.update_stack(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
tags=[])
patched_approval.assert_called_with(full_changeset=changes,
params_diff=[],
include_verbose=True,
fqn=stack_name)
self.assertEqual(patched_approval.call_count, 1)
@patch("runway.cfngin.providers.aws.default.ask_for_approval")
def test_update_stack_execute_success_with_stack_policy(
self, patched_approval):
"""Test update stack execute success with stack policy."""
stack_name = "my-fake-stack"
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': 'STACKID'
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("set_stack_policy", {})
self.stubber.add_response("execute_change_set", {})
with self.stubber:
self.provider.update_stack(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
tags=[],
stack_policy=Template(body="{}"),
)
patched_approval.assert_called_with(full_changeset=changes,
params_diff=[],
include_verbose=True,
fqn=stack_name)
self.assertEqual(patched_approval.call_count, 1)
def test_select_destroy_method(self):
"""Test select destroy method."""
for i in [[{
'force_interactive': False
}, self.provider.interactive_destroy_stack],
[{
'force_interactive': True
}, self.provider.interactive_destroy_stack]]:
self.assertEqual(self.provider.select_destroy_method(**i[0]), i[1])
def test_select_update_method(self):
"""Test select update method."""
for i in [[{
'force_interactive': False,
'force_change_set': False
}, self.provider.interactive_update_stack],
[{
'force_interactive': True,
'force_change_set': False
}, self.provider.interactive_update_stack],
[{
'force_interactive': False,
'force_change_set': True
}, self.provider.interactive_update_stack],
[{
'force_interactive': True,
'force_change_set': True
}, self.provider.interactive_update_stack]]:
self.assertEqual(self.provider.select_update_method(**i[0]), i[1])
@patch('runway.cfngin.providers.aws.default.output_full_changeset')
@patch('runway.cfngin.providers.aws.default.output_summary')
def test_get_stack_changes_interactive(self, mock_output_summary,
mock_output_full_cs):
"""Test get stack changes interactive."""
stack_name = "MockStack"
mock_stack = generate_stack_object(stack_name)
self.stubber.add_response(
'describe_stacks',
{'Stacks': [generate_describe_stacks_stack(stack_name)]})
self.stubber.add_response('get_template',
generate_get_template('cfn_template.yaml'))
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': stack_name
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("delete_change_set", {})
self.stubber.add_response(
'describe_stacks',
{'Stacks': [generate_describe_stacks_stack(stack_name)]})
with self.stubber:
self.provider.get_stack_changes(
stack=mock_stack,
template=Template(url="http://fake.template.url.com/"),
parameters=[],
tags=[])
mock_output_summary.assert_called_with(stack_name,
'changes',
changes, [],
replacements_only=False)
mock_output_full_cs.assert_called_with(full_changeset=changes,
params_diff=[],
fqn=stack_name)
class TestProviderDefaultMode(unittest.TestCase):
"""Tests for runway.cfngin.providers.aws.default default mode."""
def setUp(self):
"""Run before tests."""
region = "us-east-1"
self.session = get_session(region=region)
self.provider = Provider(self.session,
region=region,
recreate_failed=False)
self.stubber = Stubber(self.provider.cloudformation)
def test_destroy_stack(self):
"""Test destroy stack."""
stack = {'StackName': 'MockStack'}
self.stubber.add_response('delete_stack', {}, stack)
with self.stubber:
self.assertIsNone(self.provider.destroy_stack(stack))
self.stubber.assert_no_pending_responses()
def test_get_stack_stack_does_not_exist(self):
"""Test get stack stack does not exist."""
stack_name = "MockStack"
self.stubber.add_client_error(
"describe_stacks",
service_error_code="ValidationError",
service_message="Stack with id %s does not exist" % stack_name,
expected_params={"StackName": stack_name})
with self.assertRaises(exceptions.StackDoesNotExist):
with self.stubber:
self.provider.get_stack(stack_name)
def test_get_stack_stack_exists(self):
"""Test get stack stack exists."""
stack_name = "MockStack"
stack_response = {
"Stacks": [generate_describe_stacks_stack(stack_name)]
}
self.stubber.add_response("describe_stacks",
stack_response,
expected_params={"StackName": stack_name})
with self.stubber:
response = self.provider.get_stack(stack_name)
self.assertEqual(response["StackName"], stack_name)
def test_select_destroy_method(self):
"""Test select destroy method."""
for i in [[{
'force_interactive': False
}, self.provider.noninteractive_destroy_stack],
[{
'force_interactive': True
}, self.provider.interactive_destroy_stack]]:
self.assertEqual(self.provider.select_destroy_method(**i[0]), i[1])
def test_select_update_method(self):
"""Test select update method."""
for i in [[{
'force_interactive': True,
'force_change_set': False
}, self.provider.interactive_update_stack],
[{
'force_interactive': False,
'force_change_set': False
}, self.provider.default_update_stack],
[{
'force_interactive': False,
'force_change_set': True
}, self.provider.noninteractive_changeset_update],
[{
'force_interactive': True,
'force_change_set': True
}, self.provider.interactive_update_stack]]:
self.assertEqual(self.provider.select_update_method(**i[0]), i[1])
def test_prepare_stack_for_update_completed(self):
"""Test prepare stack for update completed."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(stack_name,
stack_status="UPDATE_COMPLETE")
with self.stubber:
self.assertTrue(self.provider.prepare_stack_for_update(stack, []))
def test_prepare_stack_for_update_in_progress(self):
"""Test prepare stack for update in progress."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="UPDATE_IN_PROGRESS")
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack, [])
self.assertIn('in-progress', str(raised.exception))
def test_prepare_stack_for_update_non_recreatable(self):
"""Test prepare stack for update non recreatable."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="REVIEW_IN_PROGRESS")
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack, [])
self.assertIn('Unsupported state', str(raised.exception))
def test_prepare_stack_for_update_disallowed(self):
"""Test prepare stack for update disallowed."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="ROLLBACK_COMPLETE")
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack, [])
self.assertIn('re-creation is disabled', str(raised.exception))
# Ensure we point out to the user how to enable re-creation
self.assertIn('--recreate-failed', str(raised.exception))
def test_prepare_stack_for_update_bad_tags(self):
"""Test prepare stack for update bad tags."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="ROLLBACK_COMPLETE")
self.provider.recreate_failed = True
with self.assertRaises(exceptions.StackUpdateBadStatus) as raised:
with self.stubber:
self.provider.prepare_stack_for_update(stack,
tags=[{
'Key':
'cfngin_namespace',
'Value': 'test'
}])
self.assertIn('tags differ', str(raised.exception).lower())
def test_prepare_stack_for_update_recreate(self):
"""Test prepare stack for update recreate."""
stack_name = "MockStack"
stack = generate_describe_stacks_stack(
stack_name, stack_status="ROLLBACK_COMPLETE")
self.stubber.add_response("delete_stack", {},
expected_params={"StackName": stack_name})
self.provider.recreate_failed = True
with self.stubber:
self.assertFalse(self.provider.prepare_stack_for_update(stack, []))
def test_noninteractive_changeset_update_no_stack_policy(self):
"""Test noninteractive changeset update no stack policy."""
stack_name = "MockStack"
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': 'STACKID'
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("execute_change_set", {})
with self.stubber:
self.provider.noninteractive_changeset_update(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
stack_policy=None,
tags=[],
)
def test_noninteractive_changeset_update_with_stack_policy(self):
"""Test noninteractive changeset update with stack policy."""
stack_name = "MockStack"
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': 'STACKID'
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("set_stack_policy", {})
self.stubber.add_response("execute_change_set", {})
with self.stubber:
self.provider.noninteractive_changeset_update(
fqn=stack_name,
template=Template(url="http://fake.template.url.com/"),
old_parameters=[],
parameters=[],
stack_policy=Template(body="{}"),
tags=[],
)
@patch('runway.cfngin.providers.aws.default.output_full_changeset')
def test_get_stack_changes_update(self, mock_output_full_cs):
"""Test get stack changes update."""
stack_name = "MockStack"
mock_stack = generate_stack_object(stack_name)
self.stubber.add_response(
'describe_stacks',
{'Stacks': [generate_describe_stacks_stack(stack_name)]})
self.stubber.add_response('get_template',
generate_get_template('cfn_template.yaml'))
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': stack_name
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("delete_change_set", {})
self.stubber.add_response(
'describe_stacks',
{'Stacks': [generate_describe_stacks_stack(stack_name)]})
with self.stubber:
result = self.provider.get_stack_changes(
stack=mock_stack,
template=Template(url="http://fake.template.url.com/"),
parameters=[],
tags=[])
mock_output_full_cs.assert_called_with(full_changeset=changes,
params_diff=[],
fqn=stack_name,
answer='y')
expected_outputs = {
'FakeOutput':
'<inferred-change: MockStack.FakeOutput={}>'.format(
str({"Ref": "FakeResource"}))
}
self.assertEqual(self.provider.get_outputs(stack_name),
expected_outputs)
self.assertEqual(result, expected_outputs)
@patch('runway.cfngin.providers.aws.default.output_full_changeset')
def test_get_stack_changes_create(self, mock_output_full_cs):
"""Test get stack changes create."""
stack_name = "MockStack"
mock_stack = generate_stack_object(stack_name)
self.stubber.add_response(
'describe_stacks', {
'Stacks': [
generate_describe_stacks_stack(
stack_name, stack_status='REVIEW_IN_PROGRESS')
]
})
self.stubber.add_response("create_change_set", {
'Id': 'CHANGESETID',
'StackId': stack_name
})
changes = []
changes.append(generate_change())
self.stubber.add_response(
"describe_change_set",
generate_change_set_response(
status="CREATE_COMPLETE",
execution_status="AVAILABLE",
changes=changes,
))
self.stubber.add_response("delete_change_set", {})
self.stubber.add_response(
'describe_stacks', {
'Stacks': [
generate_describe_stacks_stack(
stack_name, stack_status='REVIEW_IN_PROGRESS')
]
})
self.stubber.add_response(
'describe_stacks', {
'Stacks': [
generate_describe_stacks_stack(
stack_name, stack_status='REVIEW_IN_PROGRESS')
]
})
self.stubber.add_response("delete_stack", {})
with self.stubber:
self.provider.get_stack_changes(
stack=mock_stack,
template=Template(url="http://fake.template.url.com/"),
parameters=[],
tags=[])
mock_output_full_cs.assert_called_with(full_changeset=changes,
params_diff=[],
fqn=stack_name,
answer='y')
def test_tail_stack_retry_on_missing_stack(self):
"""Test tail stack retry on missing stack."""
stack_name = "SlowToCreateStack"
stack = MagicMock(spec=Stack)
stack.fqn = "my-namespace-{}".format(stack_name)
default.TAIL_RETRY_SLEEP = .01
# Ensure the stack never appears before we run out of retries
for i in range(MAX_TAIL_RETRIES + 5):
self.stubber.add_client_error(
"describe_stack_events",
service_error_code="ValidationError",
service_message="Stack [{}] does not exist".format(stack_name),
http_status_code=400,
response_meta={"attempt": i + 1},
)
with self.stubber:
try:
self.provider.tail_stack(stack, threading.Event())
except ClientError as exc:
self.assertEqual(exc.response["ResponseMetadata"]["attempt"],
MAX_TAIL_RETRIES)
def test_tail_stack_retry_on_missing_stack_eventual_success(self):
"""Test tail stack retry on missing stack eventual success."""
stack_name = "SlowToCreateStack"
stack = MagicMock(spec=Stack)
stack.fqn = "my-namespace-{}".format(stack_name)
default.TAIL_RETRY_SLEEP = .01
default.GET_EVENTS_SLEEP = .01
received_events = []
def mock_log_func(event):
received_events.append(event)
def valid_event_response(stack, event_id):
return {
"StackEvents": [
{
"StackId": stack.fqn + "12345",
"EventId": event_id,
"StackName": stack.fqn,
"Timestamp": datetime.now()
},
]
}
# Ensure the stack never appears before we run out of retries
for i in range(3):
self.stubber.add_client_error(
"describe_stack_events",
service_error_code="ValidationError",
service_message="Stack [{}] does not exist".format(stack_name),
http_status_code=400,
response_meta={"attempt": i + 1},
)
self.stubber.add_response("describe_stack_events",
valid_event_response(stack, "InitialEvents"))
self.stubber.add_response("describe_stack_events",
valid_event_response(stack, "Event1"))
with self.stubber:
try:
self.provider.tail_stack(stack,
threading.Event(),
log_func=mock_log_func)
except UnStubbedResponseError:
# Eventually we run out of responses - could not happen in
# regular execution
# normally this would just be dealt with when the threads were
# shutdown, but doing so here is a little difficult because
# we can't control the `tail_stack` loop
pass
self.assertEqual(received_events[0]["EventId"], "Event1")
