absl::StatusOr ParseAcsToken()

in cpp/acs_agent_helper.cc [163:193]

• 31 lines of code
• 5 McCabe index (conditional complexity)

absl::StatusOr<AcsToken> ParseAcsToken(absl::string_view endpoint) {
  absl::StatusOr<std::string> token = GetMetadata(endpoint);
  if (!token.ok()) {
    return token.status();
  }
  ABSL_VLOG(2) << "Successfully got token from metadata service: " << *token;
  absl::StatusOr<std::string> instance_id = GetValueFromTokenPayloadWithKeys(
      *token, {"google", "compute_engine", "instance_id"});
  if (!instance_id.ok()) {
    return instance_id.status();
  }
  ABSL_VLOG(2) << "Successfully got instance_id from metadata service: "
               << *instance_id;
  absl::StatusOr<std::string> project_number = GetValueFromTokenPayloadWithKeys(
      *token, {"google", "compute_engine", "project_number"});
  if (!project_number.ok()) {
    return project_number.status();
  }
  ABSL_VLOG(2) << "Successfully got project_number from metadata service: "
               << *project_number;
  absl::StatusOr<std::string> zone = GetValueFromTokenPayloadWithKeys(
      *token, {"google", "compute_engine", "zone"});
  if (!zone.ok()) {
    return zone.status();
  }
  ABSL_VLOG(2) << "Successfully got zone from metadata service: " << *zone;
  return AcsToken{.token = *std::move(token),
                  .instance_id = *std::move(instance_id),
                  .project_number = *std::move(project_number),
                  .zone = *std::move(zone)};
}