def GetMetaData(self, request):
"""Get metadata from local metadata server.
Any failed URL check will fail the whole action since our bios/service
checks may not always correctly identify cloud machines. We don't want to
wait on multiple DNS timeouts.
Args:
request: CloudMetadataRequest object
Returns:
rdf_cloud.CloudMetadataResponse object
Raises:
ValueError: if request has a timeout of 0. This is a defensive
check (we pass 1.0) because the requests library just times out and it's
not obvious why.
"""
if request.timeout == 0:
raise ValueError("Requests library can't handle timeout of 0")
result = requests.request(
"GET", request.url, headers=request.headers, timeout=request.timeout)
# By default requests doesn't raise on HTTP error codes.
result.raise_for_status()
# Requests does not always raise an exception when an incorrect response
# is received. This fixes that behaviour.
if not result.ok:
raise requests.RequestException(response=result)
return rdf_cloud.CloudMetadataResponse(
label=request.label or request.url, text=result.text)
def GetCloudVMMetadata(self, args):
result_list = []
for request in args.requests:
result_list.append(
rdf_cloud.CloudMetadataResponse(
label=request.label or request.url, text=request.label))
return [
rdf_cloud.CloudMetadataResponses(
responses=result_list, instance_type="GOOGLE")
]
