def get_describe_cmd()

in tools/genconfig/genconfig.py [0:0]

• 34 lines of code
• 7 McCabe index (conditional complexity)

def get_describe_cmd(url, project):
  r"""Builds a gcloud describe command given a resource URL.

  gcloud command will look like:

    gcloud compute instances describe instance-name \
        --zone us-central1-f --format yaml

  NOTE: only supports compute resources right now.

  Args:
    url: the URL for this resource.
    project: the project of this resource.

  Returns:
    The gcloud command to be used to describe the resource in YAML, or empty
    if no command.

  Raises:
    Exception: if URL is bad.
  """

  m = SELF_LINK_PATTERN.match(url)
  if m:
    service = m.group(1)
    unused_project = m.group(2)
    location = m.group(3)
    collection = m.group(4)
    name = m.group(5)
  else:
    # May be a truncated selfLink, allowed for compute.
    m = COMPUTE_SELF_LINK_PATTERN.match(url)
    if not m:
      raise Exception('Resource URL must be selfLink: ' + url)

    # Assumed truncated selfLink is compute only.
    service = 'compute/v1'
    location = m.group(2)
    collection = m.group(3)
    name = m.group(4)

  if service != 'compute/v1':
    raise Exception(''.join(['!!! Found resource that is unsupported: ', url]))

  # Autoscalers have no associated gcloud command for describing.
  if collection == 'autoscalers':
    print(''.join(['!!! Found autoscaler resource ',
                   name,
                   ', will attempt to generate config from its associated ',
                   'instanceGroupManager (NOTE: you must include the '
                   'associated instanceGroupManager in the resource list).']),
          file=sys.stderr)
    return ''

  return ' '.join(['gcloud compute',
                   get_gcloud_command_group(collection),
                   'describe',
                   name,
                   get_location_flag(location, url, collection),
                   '--format yaml',
                   '--project', project])