部署verticals时传递自定义类对象

Question

我有一个自定义客户端对象，我正在main((方法中实例化它，需要将它传递给我要部署的所有垂直实例。以下是我尝试过的

1.(

private static Connection connection;
.
.
.
//method to initialise client
initialiseClient();
final DeploymentOptions deployOpts = new DeploymentOptions().setInstances(num_instances);
vertx.deployVerticle(new MyVerticle(connection), deployOpts, ar -> {
if (ar.succeeded()) {
startFuture.complete();
} else {
startFuture.fail(ar.cause());
}
});

在这种情况下，我得到了以下错误，因为垂直实例已经创建。

Can't specify > 1 instances for already created verticle

2.(

JsonObject object = new JsonObject().put("connection-object", connection); 
final DeploymentOptions deployOpts = new DeploymentOptions().setInstances(num_instances);
vertx.deployVerticle(MyVerticle.class.getName(), deployOpts, ar -> {
if (ar.succeeded()) {
startFuture.complete();
} else {
startFuture.fail(ar.cause());
}
});

在这种情况下，我得到错误

java.lang.IllegalStateException: Illegal type in JsonObject: class com.abc.def.Connection

所以我的问题是，在部署一个verticale的多个实例时，有没有任何方法可以传递自定义类对象？

Answer 1

您可以使用接受Supplier<Verticle>的deployVerticle方法(此处为javadocs(。

DeploymentOptions deployOpts = new DeploymentOptions().setInstances(num_instances);
vertx.deployVerticle(() -> { return new MyVerticle(connection) }, deployOpts);