private void start()

in src/ad/src/main/java/oteldemo/AdService.java [76:114]
33 lines of code
1 McCabe index (conditional complexity)

  private void start() throws IOException {
    int port =
        Integer.parseInt(
            Optional.ofNullable(System.getenv("AD_PORT"))
                .orElseThrow(
                    () ->
                        new IllegalStateException(
                            "environment vars: AD_PORT must not be null")));
    healthMgr = new HealthStatusManager();

    // Create a flagd instance with OpenTelemetry
    FlagdOptions options =
        FlagdOptions.builder()
            .withGlobalTelemetry(true)
            .build();

    FlagdProvider flagdProvider = new FlagdProvider(options);
    // Set flagd as the OpenFeature Provider
    OpenFeatureAPI.getInstance().setProvider(flagdProvider);
  
    server =
        ServerBuilder.forPort(port)
            .addService(new AdServiceImpl())
            .addService(healthMgr.getHealthService())
            .build()
            .start();
    logger.info("Ad service started, listening on " + port);
    Runtime.getRuntime()
        .addShutdownHook(
            new Thread(
                () -> {
                  // Use stderr here since the logger may have been reset by its JVM shutdown hook.
                  System.err.println(
                      "*** shutting down gRPC ads server since JVM is shutting down");
                  AdService.this.stop();
                  System.err.println("*** server shut down");
                }));
    healthMgr.setStatus("", ServingStatus.SERVING);
  }