syntax = "proto3";

package rendezvous.pb;

message Message {
  enum MessageType {
    REGISTER = 0;
    REGISTER_RESPONSE = 1;
    UNREGISTER = 2;
    DISCOVER = 3;
    DISCOVER_RESPONSE = 4;

    DISCOVER_SUBSCRIBE = 100;
    DISCOVER_SUBSCRIBE_RESPONSE = 101;
  }

  enum ResponseStatus {
    OK                  = 0;
    E_INVALID_NAMESPACE = 100;
    E_INVALID_PEER_INFO = 101;
    E_INVALID_TTL       = 102;
    E_INVALID_COOKIE    = 103;
    E_NOT_AUTHORIZED    = 200;
    E_INTERNAL_ERROR    = 300;
    E_UNAVAILABLE       = 400;
  }

  message PeerInfo {
    bytes id = 1;
    repeated bytes addrs = 2;
  }

  message Register {
    string ns = 1;
    PeerInfo peer = 2;
    int64 ttl = 3; // in seconds
  }

  message RegisterResponse {
    ResponseStatus status = 1;
    string statusText = 2;
    int64 ttl = 3;
  }

  message Unregister {
    string ns = 1;
    bytes id = 2;
  }

  message Discover {
    string ns = 1;
    int64 limit = 2;
    bytes cookie = 3;
  }

  message DiscoverResponse {
    repeated Register registrations = 1;
    bytes cookie = 2;
    ResponseStatus status = 3;
    string statusText = 4;
  }

  message DiscoverSubscribe {
    repeated string supported_subscription_types = 1;
    string ns = 2;
  }

  message DiscoverSubscribeResponse {
    string subscription_type = 1;
    string subscription_details = 2;
    ResponseStatus status = 3;
    string statusText = 4;
  }

  MessageType type = 1;
  Register register = 2;
  RegisterResponse registerResponse = 3;
  Unregister unregister = 4;
  Discover discover = 5;
  DiscoverResponse discoverResponse = 6;

  DiscoverSubscribe discoverSubscribe = 100;
  DiscoverSubscribeResponse discoverSubscribeResponse = 101;
}

message RegistrationRecord{
    string id = 1;
    repeated bytes addrs = 2;
    string ns = 3;
    int64 ttl = 4;
}