Vertx Java deploy a JavaScript verticle with Future Callback - vertx3

Question

i would like deploy inside my Java VertX a javascript Verticle. Of course, this is not a problem. The question is, how can i give them a callback ?
My Java Code:
Vertx.clusteredVertx(vertxOptions, res ->
{
if (res.succeeded()) {
logger.info("Cluster ready, starting verticle deploy");
/*
* React JS Server Deploy
*/
Future< String > reactVerticleFuture = Future.future();
vertx.executeBlocking(future ->
{
vertx.deployVerticle("dist/server.js", options, deployResult ->
{
if (deployResult.succeeded()) {
future.complete();
} else {
future.fail(deployResult.cause());
}
});
} , reactVerticleFuture.completer());
CompositeFuture.all(..., reactVerticleFuture).setHandler(ar ->
{
/*
* deploy http listener and health endpoint
*/
});
} else {
logger.error(res.cause().getMessage(), res.cause());
}
});
My server.js:
exports.vertxStartAsync = function(startFuture) {
console.log('vertxStartAsync')
var eb = vertx.eventBus()
var consumer = eb.consumer('httpGetWebChannel', function (message) {
})
consumer.completionHandler(function (res, res_err) {
if (res_err == null) {
console.log("The handler registration has reached all nodes");
startFuture.complete()
} else {
console.log("Registration failed!");
startFuture.fail()
}
});
}
Of course, my server.js is bigger and this need's some time for starting. In my clustered Vertx i get during the start some messages that something blocks my bus.
How can i fix this ?
Thanks
Marcel

Answer 1

Ok, we found a solution ( alexvetter - thanks for your patience).
The problem is that i build my server.js file with webpack and after building, the exports block is inside a function.
This is the working solution:
webpack.config.js
var WrapperPlugin = require('wrapper-webpack-plugin');
...
plugins: [
new WrapperPlugin({
header: 'exports.vertxStartAsync = function(startFuture) {\n',
footer: '}\n'
}),
...
]
...
server.js
var eb = vertx.eventBus()
var consumer = eb.consumer('httpGetWebChannel', function (message) {
...
})
consumer.completionHandler(function (res, res_err) {
if (res_err == null) {
console.log("The handler registration has reached all nodes");
startFuture.complete()
} else {
console.log("Registration failed!");
startFuture.fail()
}
});
Thanks