spring-cloud-gcp-pubsub-example-HelloPubSubController.java

@RestController
@RequestMapping("/hello")
public class HelloPubSubController {

    private static final Logger LOGGER = LoggerFactory.getLogger(HelloPubSubController.class);

    private final HelloPubSubPublisher publisher;

    @Autowired
    public HelloPubSubController(HelloPubSubPublisher publisher) {
        this.publisher = publisher;
    }

    @PostMapping("/publish")
    public void publish(@RequestBody String message) {
        LOGGER.info("Received a POST at /hello/publish with message=[{}]", message);
        publisher.publish(message);
    }

}