networking/grpc-gke-nlb-tutorial/echo-grpc/health/health.go

// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package health

import (
	"context"

	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/health/grpc_health_v1"
	"google.golang.org/grpc/status"
)

// Server for the Health Check gRPC API
type Server struct{}

// Check is used for health checks
func (s *Server) Check(ctx context.Context, in *grpc_health_v1.HealthCheckRequest) (*grpc_health_v1.HealthCheckResponse, error) {
	// This is where you can implement checks of your service status
	return &grpc_health_v1.HealthCheckResponse{Status: grpc_health_v1.HealthCheckResponse_SERVING}, nil
}

// Watch is not implemented
func (s *Server) Watch(in *grpc_health_v1.HealthCheckRequest, srv grpc_health_v1.Health_WatchServer) error {
	return status.Error(codes.Unimplemented, "Watch is not implemented")
}