Method state

src/master/http.cpp:2289–2321

Future<Response> Master::Http::state(
    const Request& request,
    const Option<Principal>& principal) const
{
  // TODO(greggomann): Remove this check once the `Principal` type is used in
  // `ReservationInfo`, `DiskInfo`, and within the master's `principals` map.
  // See MESOS-7202.
  if (principal.isSome() && principal->value.isNone()) {
    return Forbidden(
        "The request's authenticated principal contains claims, but no value "
        "string. The master currently requires that principals have a value");
  }

  // When current master is not the leader, redirect to the leading master.
  if (!master->elected()) {
    return redirect(request);
  }

  return ObjectApprovers::create(
      master->authorizer,
      principal,
      {VIEW_ROLE, VIEW_FRAMEWORK, VIEW_TASK, VIEW_EXECUTOR, VIEW_FLAGS})
    .then(defer(
        master->self(),
        [this, request, principal](const Owned<ObjectApprovers>& approvers) {
          return deferBatchedRequest(
              &Master::ReadOnlyHandler::state,
              principal,
              ContentType::JSON,
              request.url.query,
              approvers);
        }));
}


Future<Response> Master::Http::deferBatchedRequest(