Vertx multi vertical shared data

Introduce

Vert.x many Verticle Sharing data between

• different parts of your application, or
• different applications in the same Vert.x instance, or
• different applications across a cluster of Vert.x instances.

1. maven Project dependence

<dependencies>
	<dependency>
		<groupId>io.vertx</groupId>
		<artifactId>vertx-web</artifactId>
	</dependency>
	<dependency>
		<groupId>io.vertx</groupId>
		<artifactId>vertx-config-yaml</artifactId>
	</dependency>
	<dependency>
		<groupId>com.fasterxml.jackson.core</groupId>
		<artifactId>jackson-databind</artifactId>
	</dependency>
	<dependency>
		<groupId>com.lance.common</groupId>
		<artifactId>vertx-common-core</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</dependency>
</dependencies>

2.YAML File configuration

server:
  host: 127.0.0.1
  port: 18004

3. Project main class

public class MultiVerticalApplication extends AbstractVerticle {

  public static void main(String[] args) {
    Vertx vertx = Vertx.vertx();
    vertx.deployVerticle(MultiVerticalApplication.class.getName());
  }

  @Override
  public void start() {
    ConfigRetriever retriever = readYaml(vertx);

    retriever.getConfig(json -> {
      JsonObject object = json.result();

      DeploymentOptions options = new DeploymentOptions().setConfig(object);

      Router router = Router.router(vertx);
      vertx.deployVerticle(new HelloVertical(router), options);
      vertx.deployVerticle(new WorldVertical(router), options);
    });
  }

  private static ConfigRetriever readYaml(Vertx vertx) {
    ConfigStoreOptions store = new ConfigStoreOptions()
        .setType("file")
        .setFormat("yaml")
        .setOptional(true)
        .setConfig(new JsonObject().put("path", "application.yaml"));

    return ConfigRetriever.create(vertx, new ConfigRetrieverOptions().addStore(store));
  }
}

4.Verticle One Set up shared data

public class WorldVertical extends AbstractVerticle {
  public final static String DEFAULT_LOCAL_MAP_NAME = "default_local_map_name";
  private final Router router;

  @Override
  public void start() {
    router.route("/world").handler(ctx -> {
      String name = ctx.queryParam("name").get(0);

      SharedData sd = ctx.vertx().sharedData();
      LocalMap<String, String> sharedData = sd.getLocalMap(DEFAULT_LOCAL_MAP_NAME);
      sharedData.put("shareKey", "this is share world");

      log.info("===> Request world name: {}, share put data: {}", name, sharedData);
      ctx.json(R.success("World " + name));
    });

    ConfigProperties properties = config().mapTo(ConfigProperties.class);
    int port = properties.getServer().getPort();
    vertx.createHttpServer()
        .requestHandler(router)
        .listen(port, http -> {
          if (http.succeeded()) {
            log.info("World server started on port {}", http.result().actualPort());
          } else {
            log.error("World server start fail: ", http.cause());
          }
        });
  }
}

5.Verticle Two Get shared data

public class HelloVertical extends AbstractVerticle {
  private final Router router;

  @Override
  public void start() {
    router.route("/hello").handler(ctx -> {
      String name = ctx.queryParam("name").get(0);
      SharedData sd = ctx.vertx().sharedData();

      log.info("===> Request hello name: {}, share get data: {}", name, sd.getLocalMap(WorldVertical.DEFAULT_LOCAL_MAP_NAME));
      ctx.json(R.success("Hello " + name));
    });

    ConfigProperties properties = config().mapTo(ConfigProperties.class);
    int port = properties.getServer().getPort();

    vertx.createHttpServer()
        .requestHandler(router)
        .listen(port, http -> {
          if (http.succeeded()) {
            log.info("Hello server started on port {}", http.result().actualPort());
          } else {
            log.error("Hello server start fail: ", http.cause());
          }
        });
  }
}

6. result

2022-02-06 23:26:43.855  INFO 24 --- [ntloop-thread-2] org.lance.multi.WorldVertical           ---[  33] : ===> Request world name: tom, share put data: {shareKey=this is share world}
2022-02-06 23:26:52.681  INFO 24 --- [ntloop-thread-2] org.lance.multi.HelloVertical           ---[  28] : ===> Request hello name: tom, share get data: {shareKey=this is share world}

7. Full address of the project

Vertx And Multi Verticle Shared data Github Address

Vertx And Multi Verticle Shared data Gitee Address