Buildkit monitorHealth with debug logs

grpc.go

func monitorHealth(ctx context.Context, cc *grpc.ClientConn, cancelConn func()) {
	defer cancelConn()
	defer cc.Close()

	ticker := time.NewTicker(1 * time.Second)
	defer ticker.Stop()
	healthClient := grpc_health_v1.NewHealthClient(cc)

	for {
		select {
		case <-ctx.Done():
			return
		case <-ticker.C:
			ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
			fmt.Println("--- healthcheck start")
			resp, err := healthClient.Check(ctx, &grpc_health_v1.HealthCheckRequest{})
			fmt.Printf("--- healthcheck status: %v\n", resp.Status.String())
			cancel()
			if err != nil {
				fmt.Println("--- healthcheck failed")
				fmt.Println("--- healthcheck error: %s\n", err.Error())
				return
			}
		}
	}
}