def test_supports_extra_jinja_vars(tmpdir):
load = Loader(variables={'test': 'bar'})
example = '{"Description": "{{ test | title }}"}'
with Path(tmpdir):
with open('test.template.json', 'w') as f:
f.write(example)
load.load()
actual = json.loads(load.template())
assert actual == {"Description": "Bar"}
def test_module_vars_have_precedence_over_global(tmpdir):
load = Loader(variables={'test': 'bar'})
example = '{"Description": "{{ test }}"}'
with Path(tmpdir):
os.mkdir('moduledir')
with open('moduledir/test.template.json', 'w') as f:
f.write(example)
with open('test.template.json', 'w') as f:
f.write('{"Resources": {"TestResource": {"From": "Moduledir", "Properties": {"test": "baz" } }}}')
load.load()
actual = json.loads(load.template())
assert actual == {"Description": "baz"}
def test_code_passes_variables(tmpdir):
load = Loader(variables={'SomeVariable': 'SomeValue'})
template = '{"Resources": {"{{code("testfile")}}": "Test"}}'
code = '{{SomeVariable}}'
with Path(tmpdir):
with open('test.template.json', 'w') as f:
f.write(template)
with open('testfile', 'w') as f:
f.write(code)
load.load()
actual = json.loads(load.template())
assert actual == {"Resources": {"SomeValue": "Test"}}
def __compare(template,
stack,
vars=None,
parameters={},
tags={},
main_account_parameter=False):
current_parameters = {
p["ParameterKey"]: p["ParameterValue"]
for p in (stack.get("Parameters", []))
}
parameters = {key: str(value) for key, value in parameters.items()}
tags = {key: str(value) for key, value in tags.items()}
current_tags = {p["Key"]: p["Value"] for p in (stack.get("Tags", []))}
loader = Loader(variables=vars,
main_account_parameter=main_account_parameter)
loader.load()
deployed_template = convert(template)
template_parameters = {
key: str(value["Default"]).lower()
if type(value["Default"]) == bool else str(value["Default"])
for key, value in (
loader.template_dictionary().get("Parameters", {})).items()
if "Default" in value
}
template_parameters.update(parameters)
if isinstance(deployed_template, str):
deployed_template = yaml.full_load(deployed_template)
__generate_table("Parameters", current_parameters, template_parameters)
__generate_table("Tags", current_tags, tags)
__generate_table("Template", deployed_template,
convert(loader.template_dictionary()))
def __compare(template,
stack,
vars=None,
parameters={},
tags={},
main_account_parameter=False):
current_parameters = {
p['ParameterKey']: p['ParameterValue']
for p in (stack.get('Parameters', []))
}
parameters = {key: str(value) for key, value in parameters.items()}
tags = {key: str(value) for key, value in tags.items()}
current_tags = {p['Key']: p['Value'] for p in (stack.get('Tags', []))}
loader = Loader(variables=vars,
main_account_parameter=main_account_parameter)
loader.load()
deployed_template = convert(template)
template_parameters = {
key: str(value['Default']).lower()
if type(value['Default']) == bool else str(value['Default'])
for key, value in (
loader.template_dictionary().get('Parameters', {})).items()
if 'Default' in value
}
template_parameters.update(parameters)
if isinstance(deployed_template, str):
deployed_template = yaml.safe_load(deployed_template)
__generate_table('Parameters', current_parameters, template_parameters)
__generate_table('Tags', current_tags, tags)
__generate_table('Template', deployed_template,
convert(loader.template_dictionary()))
def run(self, stack, variables=None):
client = self.cf_client()
result = client.get_template(StackName=stack, )
loader = Loader(variables=variables)
loader.load()
deployed_template = convert(result['TemplateBody'])
if isinstance(deployed_template, str):
deployed_template = yaml.load(deployed_template)
changes = DeepDiff(deployed_template,
convert(loader.template_dictionary()),
ignore_order=False,
report_repetition=True,
verbose_level=2,
view='tree')
table = Texttable(max_width=200)
table.add_rows([['Path', 'From', 'To', 'Change Type']])
print_diff = False
processed_changes = self.__collect_changes(changes)
for change in processed_changes:
print_diff = True
path = re.findall("\['?(\w+)'?\]", change.path)
table.add_row([
' > '.join(path), change.before, change.after,
change.type.title().replace('_', ' ')
])
if print_diff:
logger.info(table.draw() + "\n")
else:
logger.info('No Changes found')
def load():
return Loader()