syntax = "proto3";

package go.micro.network.mucp;

// AdvertType defines the type of advert
enum AdvertType {
  AdvertAnnounce = 0;
  AdvertUpdate = 1;
}

// Advert is router advertsement streamed by Watch
message Advert {
  // id of the advertising router
  string id = 1;
  // type of advertisement
  AdvertType type = 2;
  // unix timestamp of the advertisement
  int64 timestamp = 3;
  // TTL of the Advert
  int64 ttl = 4;
  // events is a list of advertised events
  repeated Event events = 5;
}

// EventType defines the type of event
enum EventType {
  Create = 0;
  Delete = 1;
  Update = 2;
}

// Event is routing table event
message Event {
  // the unique event id
  string id = 1;
  // type of event
  EventType type = 2;
  // unix timestamp of event
  int64 timestamp = 3;
  // service route
  Route route = 4;
}

// Route is a service route
message Route {
  // service for the route
  string service = 1;
  // the address that advertise this route
  string address = 2;
  // gateway as the next hop
  string gateway = 3;
  // the network for this destination
  string network = 4;
  // router if the router id
  string router = 5;
  // the network link
  string link = 6;
  // the metric / score of this route
  int64 metric = 7;
  // metadata for the route
  map<string,string> metadata = 8;
}

// Error tracks network errors
message Error {
        uint32 count = 1;
        string msg = 2;
}

// Status is node status
message Status {
        Error error = 1;
}

// Node is network node
message Node {
        // node id
        string id = 1;
        // node address
        string address = 2;
        // the network
        string network = 3;
        // associated metadata
        map<string,string> metadata = 4;
        // node status
        Status status = 5;
}

// Connect is sent when the node connects to the network
message Connect {
        // network mode
        Node node = 1;
}

// Close is sent when the node disconnects from the network
message Close {
        // network node
        Node node = 1;
}

// Peer is used to advertise node peers
message Peer {
        // network node
        Node node = 1;
        // node peers
        repeated Peer peers = 2;
}

// Sync is network sync message
message Sync {
        // peer origin
        Peer peer = 1;
        // node routes
        repeated Route routes = 2;
}