syntax = "proto3";

package usdpl;

// The tools service
service DevTools {
  // Write a message to the back-end log
  rpc Log (LogMessage) returns (Empty);

  // Echo a message through the back-end
  rpc Echo (Ok) returns (Ok);

  // Retrieve the USDPL version
  rpc Version (Empty) returns (VersionString);
}

enum LogLevel {
    Trace = 0;
    Debug = 1;
    Info = 2;
    Warn = 3;
    Error = 4;
}

// The request message containing the log message
message LogMessage {
  LogLevel level = 1;
  string msg = 2;
}

message Empty {}

message Ok {
  bool ok = 1;
}

message VersionString {
  string version = 1;
}