Method create

src/common/http.cpp:1204–1237

Future<Owned<ObjectApprovers>> ObjectApprovers::create(
    const Option<Authorizer*>& authorizer,
    const Option<Principal>& principal,
    std::initializer_list<authorization::Action> actions)
{
  // Ensures there are no repeated elements.
  // Note: `set` is necessary because we relay in the order of the elements
  // while doing `zip` below.
  set<authorization::Action> _actions(actions);

  Option<authorization::Subject> subject =
    authorization::createSubject(principal);

  if (authorizer.isNone()) {
    hashmap<authorization::Action, shared_ptr<const ObjectApprover>> approvers;

    foreach (authorization::Action action, _actions) {
      approvers.put(action, std::make_shared<AcceptingObjectApprover>());
    }

    return Owned<ObjectApprovers>(
        new ObjectApprovers(std::move(approvers), principal));
  }

  return process::collect(lambda::map<vector>(
      [&](authorization::Action action) {
        return authorizer.get()->getApprover(subject, action);
      },
      _actions))
    .then([=](const vector<shared_ptr<const ObjectApprover>>& _approvers) {
      return Owned<ObjectApprovers>(
          new ObjectApprovers(lambda::zip(_actions, _approvers), principal));
    });
}


process::Future<bool> authorizeEndpoint(