Eclipse Vert.x 3.8.0 released!

We are ex­tremely pleased to an­nounce that the Eclipse Vert.x ver­sion 3.8.0 has been re­leased.

This is an im­por­tant re­lease that in­tro­duces a few changes ramp­ing up to Vert.x 4 ex­pected by the end of this year.

The Reactive SQL Client

The client is the evo­lu­tion of the leg­endary Re­ac­tive Post­greSQL Client and pro­vides

• The Re­ac­tive Post­greSQL Client aka Vert.x Post­greSQL Client
• The Re­ac­tive MySQL Client aka Vert.x MySQL Client

These im­ple­men­ta­tions pro­vide real high per­for­mance non-​blocking ac­cess to Post­greSQL and MySQL.

To use these new mod­ules, add the fol­low­ing to the de­pen­den­cies sec­tion of your Maven POM file:

<dependency>
  <groupId>io.vertx</groupId>
  <artifactId>vertx-pg-client</artifactId>
  <version>3.8.0</version>
</dependency>
<dependency>
  <groupId>io.vertx</groupId>
  <artifactId>vertx-mysql-client</artifactId>
  <version>3.8.0</version>
</dependency>

Or, if you use Gra­dle:

compile 'io.vertx:vertx-pg-client:3.8.0'
compile 'io.vertx:vertx-mysql-client:3.8.0'

Then you are good to go!

// Connect options
PgConnectOptions connectOptions = new PgConnectOptions()
  .setPort(5432)
  .setHost("the-host")
  .setDatabase("the-db")
  .setUser("user")
  .setPassword("secret");

PgPool client = PgPool.pool(connectOptions, new PoolOptions().setMaxSize(5));

client.query("SELECT * FROM users WHERE id='julien'", ar -> {
  if (ar.succeeded()) {
    RowSet result = ar.result();
    System.out.println("Got " + result.size() + " rows ");
  } else {
    System.out.println("Failure: " + ar.cause().getMessage());
  }
});

Like­wise you can achieve the same for MySQL:

MySQLConnectOptions connectOptions = new MySQLConnectOptions()
  .setPort(3306)
  .setHost("the-host")
  .setDatabase("the-db")
  .setUser("user")
  .setPassword("secret");

MySQLPool client = MySQLPool.pool(connectOptions, new PoolOptions().setMaxSize(5));

client.query("SELECT * FROM users WHERE id='julien'", ar -> {
  if (ar.succeeded()) {
    RowSet result = ar.result();
    System.out.println("Got " + result.size() + " rows ");
  } else {
    System.out.println("Failure: " + ar.cause().getMessage());
  }
});

The Re­ac­tive SQL Client brings to you the next gen­er­a­tion data­base ac­cess, it is cer­tainly the most ex­cit­ing thing hap­pen­ing in the re­ac­tive data­base ac­cess space.

Future API improvements

In this re­lease we up­dated the Vert.x Future in­ter­face to ex­pose com­ple­tion meth­ods in a new Promise in­ter­face.

This im­proves the de­sign of the API of Future by hav­ing Promise being the write side of an asyn­chro­nous re­sult and the Future being its read side.

While there is lit­tle use for this in Vert.x 3.x, this has an im­pact on Vert.x 4.

Con­se­quently some method sig­na­tures have been changed to use Promise in­stead of Future ex­plained in this page.

Upgrading to 3.8

Up­grad­ing to 3.8.0 might re­quire a few changes in your ap­pli­ca­tion, you can read this page to un­der­stand the im­pact of the 3.8 re­lease on your ap­pli­ca­tion up­grade.

And more…

Here are some other im­por­tant im­prove­ments you can find in this re­lease:

• Cas­san­dra Client gets out of tech pre­view
• Jack­son up­grade to 2.9.9 and data­bind 2.9.9.1
• And ob­vi­ously we have the usual bug fixes!

Finally

The 3.8.0 re­lease notes can be found on the wiki, as well as the list of dep­re­ca­tions and break­ing changes

Docker im­ages are avail­able on Docker Hub.

The Vert.x dis­tri­b­u­tion can be down­loaded on the web­site but is also avail­able from SD­KMan and Home­Brew.

The event bus client using the SockJS bridge is avail­able from:

• NPM
• Bower
• We­b­Jars

The re­lease ar­ti­facts have been de­ployed to Maven Cen­tral and you can get the dis­tri­b­u­tion on Bin­tray.

That’s it! Happy cod­ing and see you soon on our user or dev chan­nels.