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syntax = "proto3";

package grpc.health.v1;

//@@.. cpp:namespace:: grpc.health.v1

//@@
//@@.. cpp:var:: message HealthCheckRequest
//@@
//@@   Request message for HealthCheck
//@@
message HealthCheckRequest
{
  string service = 1;
}

//@@
//@@.. cpp:var:: message HealthCheckResponse
//@@
//@@   Response message for HealthCheck
//@@
message HealthCheckResponse
{
  //@@
  //@@.. cpp:enum:: ServingStatus
  //@@
  //@@   Statuses supported by GRPC's health check.
  //@@
  enum ServingStatus {
    UNKNOWN = 0;
    SERVING = 1;
    NOT_SERVING = 2;
    SERVICE_UNKNOWN = 3;
  }
  ServingStatus status = 1;
}

//@@
//@@.. cpp:var:: service Health
//@@
//@@   Health service for GRPC endpoints.
//@@
service Health
{
  //@@  .. cpp:var:: rpc Check(HealthCheckRequest) returns
  //@@       (HealthCheckResponse)
  //@@
  //@@     Get serving status of the inference server.
  //@@
  rpc Check(HealthCheckRequest) returns (HealthCheckResponse);
}