def test_can_validate_feature_flags(sample_app):
# The _features_used is marked internal because we don't want
# chalice users to access it, but this attribute is intended to be
# accessed by anything within the chalice codebase.
sample_app._features_used.add('SOME_NEW_FEATURE')
with pytest.raises(ExperimentalFeatureError):
validate_feature_flags(sample_app)
# Now if we opt in, validation is fine.
sample_app.experimental_feature_flags.add('SOME_NEW_FEATURE')
try:
validate_feature_flags(sample_app)
except ExperimentalFeatureError:
raise AssertionError("App was not suppose to raise an error when "
"opting in to features via a feature flag.")
def load_chalice_app(self,
environment_variables=None,
validate_feature_flags=True):
# type: (Optional[MutableMapping], Optional[bool]) -> Chalice
# validate_features indicates that we should validate that
# any expiremental features used have the appropriate feature flags.
if self.project_dir not in sys.path:
sys.path.insert(0, self.project_dir)
# The vendor directory has its contents copied up to the top level of
# the deployment package. This means that imports will work in the
# lambda function as if the vendor directory is on the python path.
# For loading the config locally we must add the vendor directory to
# the path so it will be treated the same as if it were running on
# lambda.
vendor_dir = os.path.join(self.project_dir, 'vendor')
if os.path.isdir(vendor_dir) and vendor_dir not in sys.path:
# This is a tradeoff we have to make for local use.
# The common use case of vendor/ is to include
# extension modules built for AWS Lambda. If you're
# running on a non-linux dev machine, then attempting
# to import these files will raise exceptions. As
# a workaround, the vendor is added to the end of
# sys.path so it's after `./lib/site-packages`.
# This gives you a change to install the correct
# version locally and still keep the lambda
# specific one in vendor/
sys.path.append(vendor_dir)
if environment_variables is not None:
self._environ.update(environment_variables)
try:
app = importlib.import_module('app')
chalice_app = getattr(app, 'app')
except SyntaxError as e:
message = ('Unable to import your app.py file:\n\n'
'File "%s", line %s\n'
' %s\n'
'SyntaxError: %s') % (getattr(
e, 'filename'), e.lineno, e.text, e.msg)
raise RuntimeError(message)
if validate_feature_flags:
validate.validate_feature_flags(chalice_app)
return chalice_app
def load_chalice_app(self, environment_variables=None,
validate_feature_flags=True):
# type: (Optional[MutableMapping], Optional[bool]) -> Chalice
# validate_features indicates that we should validate that
# any expiremental features used have the appropriate feature flags.
if self.project_dir not in sys.path:
sys.path.insert(0, self.project_dir)
# The vendor directory has its contents copied up to the top level of
# the deployment package. This means that imports will work in the
# lambda function as if the vendor directory is on the python path.
# For loading the config locally we must add the vendor directory to
# the path so it will be treated the same as if it were running on
# lambda.
vendor_dir = os.path.join(self.project_dir, 'vendor')
if os.path.isdir(vendor_dir) and vendor_dir not in sys.path:
# This is a tradeoff we have to make for local use.
# The common use case of vendor/ is to include
# extension modules built for AWS Lambda. If you're
# running on a non-linux dev machine, then attempting
# to import these files will raise exceptions. As
# a workaround, the vendor is added to the end of
# sys.path so it's after `./lib/site-packages`.
# This gives you a change to install the correct
# version locally and still keep the lambda
# specific one in vendor/
sys.path.append(vendor_dir)
if environment_variables is not None:
self._environ.update(environment_variables)
try:
app = importlib.import_module('app')
chalice_app = getattr(app, 'app')
except SyntaxError as e:
message = (
'Unable to import your app.py file:\n\n'
'File "%s", line %s\n'
' %s\n'
'SyntaxError: %s'
) % (getattr(e, 'filename'), e.lineno, e.text, e.msg)
raise RuntimeError(message)
if validate_feature_flags:
validate.validate_feature_flags(chalice_app)
return chalice_app
