def load_yaml(path, a_file=True):
f = None
try:
if a_file:
f = codecs.open(path, encoding='utf-8', errors='strict')
s = f.read()
else:
s = UrlUtils.get_url(path).content
except requests.exceptions.Timeout as e:
msg = (_('Timeout reaching server "%(path)s": Reason is %(reason)s.') %
{
'path': path,
'reason': e
})
ExceptionCollector.appendException(URLException(what=msg))
return
except requests.exceptions.ConnectionError as e:
msg = (_('Error reaching server "%(path)s": Reason is %(reason)s.') % {
'path': path,
'reason': e
})
ExceptionCollector.appendException(URLException(what=msg))
return
except requests.exceptions.HTTPError as e:
msg = (_('Request error "%(path)s": Reason is %(reason)s.') % {
'path': path,
'reason': e
})
ExceptionCollector.appendException(URLException(what=msg))
return
except Exception as e:
raise
finally:
if f:
f.close()
return yaml.load(s, Loader=yaml_loader)
def validate(self):
"""Validate the provided CSAR file."""
self.is_validated = True
# validate that the file or URL exists
missing_err_msg = (_('"%s" does not exist.') % self.path)
if self.a_file:
if not os.path.isfile(self.path):
ExceptionCollector.appendException(
ValidationError(message=missing_err_msg))
return False
else:
self.csar = self.path
else: # a URL
if not UrlUtils.validate_url(self.path):
ExceptionCollector.appendException(
ValidationError(message=missing_err_msg))
return False
else:
self.csar = BytesIO(UrlUtils.get_url(self.path).content)
# validate that it is a valid zip file
if not zipfile.is_zipfile(self.csar):
err_msg = (_('"%s" is not a valid zip file.') % self.path)
ExceptionCollector.appendException(
ValidationError(message=err_msg))
return False
# validate that it contains the metadata file in the correct location
self.zfile = zipfile.ZipFile(self.csar, 'r')
filelist = self.zfile.namelist()
if 'TOSCA-Metadata/TOSCA.meta' not in filelist:
err_msg = (_('"%s" is not a valid CSAR as it does not contain the '
'required file "TOSCA.meta" in the folder '
'"TOSCA-Metadata".') % self.path)
ExceptionCollector.appendException(
ValidationError(message=err_msg))
return False
# validate that 'Entry-Definitions' property exists in TOSCA.meta
data = self.zfile.read('TOSCA-Metadata/TOSCA.meta')
invalid_yaml_err_msg = (_('The file "TOSCA-Metadata/TOSCA.meta" in '
'the CSAR "%s" does not contain valid YAML '
'content.') % self.path)
try:
meta = yaml.load(data)
if type(meta) is dict:
self.metadata = meta
else:
ExceptionCollector.appendException(
ValidationError(message=invalid_yaml_err_msg))
return False
except yaml.YAMLError:
ExceptionCollector.appendException(
ValidationError(message=invalid_yaml_err_msg))
return False
if 'Entry-Definitions' not in self.metadata:
err_msg = (_('The CSAR "%s" is missing the required metadata '
'"Entry-Definitions" in '
'"TOSCA-Metadata/TOSCA.meta".') % self.path)
ExceptionCollector.appendException(
ValidationError(message=err_msg))
return False
# validate that 'Entry-Definitions' metadata value points to an
# existing file in the CSAR
entry = self.metadata.get('Entry-Definitions')
if entry and entry not in filelist:
err_msg = (_('The "Entry-Definitions" file defined in the '
'CSAR "%s" does not exist.') % self.path)
ExceptionCollector.appendException(
ValidationError(message=err_msg))
return False
# validate that external references in the main template actually
# exist and are accessible
self._validate_external_references()
return not self.error_caught
