syntax = "proto3";

package vpnapi;

option go_package = "github.com/edgelesssys/constellation/coordinator/vpnapi/vpnproto";

service API {
  rpc GetUpdate(GetUpdateRequest) returns (GetUpdateResponse);
  rpc GetK8sJoinArgs(GetK8sJoinArgsRequest) returns (GetK8sJoinArgsResponse);
  rpc GetK8sCertificateKey(GetK8sCertificateKeyRequest) returns (GetK8sCertificateKeyResponse);
  rpc GetDataKey(GetDataKeyRequest) returns (GetDataKeyResponse);
}

message GetUpdateRequest {
  int64 resource_version = 1;
}

message GetUpdateResponse {
  int64 resource_version = 1;
  repeated Peer peers = 2;
}

message GetK8sJoinArgsRequest {
}

message GetK8sJoinArgsResponse {
  string api_server_endpoint = 1;
  string token = 2;
  string discovery_token_ca_cert_hash = 3;
}

message GetK8sCertificateKeyRequest {
}

message GetK8sCertificateKeyResponse {
  string certificateKey = 1;
}

message Peer {
  string public_ip = 1;
  string vpn_ip = 2;
  bytes vpn_pub_key = 3;
  uint32 role = 4;
}

message GetDataKeyRequest {
  string data_key_id = 1;
  uint32 length = 2;
}

message GetDataKeyResponse {
  bytes data_key = 1;
}