def _import_child( # pylint: disable=too-many-locals
cls, stack_properties: dict, parent_stack: "Stack"
) -> Optional["Stack"]:
url = ""
for event in parent_stack.events():
if event.physical_id == stack_properties["StackId"] and event.properties:
url = event.properties["TemplateURL"]
if url.startswith(parent_stack.template.url_prefix()):
# Template is part of the project, discovering path
relative_path = url.replace(parent_stack.template.url_prefix(), "").lstrip(
"/"
)
absolute_path = parent_stack.template.project_root / relative_path
else:
try:
# Assuming template is remote to project and downloading it
cfn_client = parent_stack.client
tempate_body = cfn_client.get_template(
StackName=stack_properties["StackId"]
)["TemplateBody"]
path = parent_stack.template.project_root / Stack.REMOTE_TEMPLATE_PATH
os.makedirs(path, exist_ok=True)
fname = (
"".join(
random.choice(string.ascii_lowercase) # nosec
for _ in range(16)
)
+ ".template"
)
absolute_path = path / fname
template_str = ordered_dump(tempate_body, dumper=yaml.SafeDumper)
if not absolute_path.exists():
with open(absolute_path, "w") as fh:
fh.write(template_str)
except Exception as e: # pylint: disable=broad-except
LOG.warning(
f"Failed to attach child stack "
f'{stack_properties["StackId"]} {str(e)}'
)
LOG.debug("traceback", exc_info=True)
return None
template = Template(
template_path=str(absolute_path),
project_root=parent_stack.template.project_root,
url=url,
)
stack = cls(
parent_stack.region,
stack_properties["StackId"],
template,
parent_stack.name,
parent_stack.uuid,
)
stack.set_stack_properties(stack_properties)
return stack
def _import_child( # pylint: disable=too-many-locals
cls, stack_properties: dict, parent_stack: "Stack"
) -> Optional["Stack"]:
try:
url = ""
for event in parent_stack.events():
if (
event.physical_id == stack_properties["StackId"]
and event.properties
):
url = event.properties["TemplateURL"]
if url.startswith(parent_stack.template.url_prefix()):
# Template is part of the project, discovering path
relative_path = url.replace(
parent_stack.template.url_prefix(), ""
).lstrip("/")
absolute_path = parent_stack.template.project_root / relative_path
if not absolute_path.is_file():
# try with the base folder stripped off
relative_path2 = Path(relative_path)
relative_path2 = relative_path2.relative_to(
*relative_path2.parts[:1]
)
absolute_path = parent_stack.template.project_root / relative_path2
if not absolute_path.is_file():
LOG.warning(
f"Failed to find template for child stack "
f"{stack_properties['StackId']}. tried "
f"{parent_stack.template.project_root / relative_path}"
f" and {absolute_path}"
)
return None
else:
# Assuming template is remote to project and downloading it
cfn_client = parent_stack.client
tempate_body = cfn_client.get_template(
StackName=stack_properties["StackId"]
)["TemplateBody"]
path = parent_stack.template.project_root / Stack.REMOTE_TEMPLATE_PATH
os.makedirs(path, exist_ok=True)
fname = (
"".join(
random.choice(string.ascii_lowercase) # nosec
for _ in range(16)
)
+ ".template"
)
absolute_path = path / fname
if not isinstance(tempate_body, str):
tempate_body = ordered_dump(tempate_body, dumper=yaml.SafeDumper)
if not absolute_path.exists():
with open(absolute_path, "w", encoding="utf-8") as fh:
fh.write(tempate_body)
template = Template(
template_path=str(absolute_path),
project_root=parent_stack.template.project_root,
url=url,
template_cache=tcat_template_cache,
)
stack = cls(
parent_stack.region,
stack_properties["StackId"],
template,
parent_stack.name,
parent_stack.uuid,
)
stack.set_stack_properties(stack_properties)
except Exception as e: # pylint: disable=broad-except
LOG.warning(f"Failed to import child stack: {str(e)}")
LOG.debug("traceback:", exc_info=True)
return None
return stack