syntax = "proto3";

package easyfl.pb;
import "easyfl/pb/common.proto";

message UploadRequest {
    string task_id = 1;
    int32 round_id = 2;
    string client_id = 3;
    UploadContent content = 4;
}

message UploadContent {
    // Data is the marshaled data, value depends on data type.
    bytes data = 1;
    // Type of data.
    DataType type = 2;
    // optional, number of data point
    int64 data_size = 3;
    // optional, client metric
    ClientMetric metric = 4;
    // optional, extra upload content
    bytes extra = 99;
}

message Performance {
    float accuracy = 1;
    float loss = 2;
}

message UploadResponse {
    Status status = 1;
}

message RunRequest {
    bytes model = 1;
    // Optional, run server with provided clients.
    repeated Client clients = 2;
    // [Deprecated] Optional, run server with client addresses getting from etcd.
    string etcd_addresses = 3;
}

message RunResponse {
    Status status = 1;
}

message StopRequest {}

message StopResponse {
    Status status = 1;
}

message Client {
    string client_id = 1;
    string address = 2;
    int32 index = 3;
}

service ServerService {
    rpc Upload (UploadRequest) returns (UploadResponse) {}
    rpc Run (RunRequest) returns (RunResponse) {}
    rpc Stop (StopRequest) returns (StopResponse) {}
}