=== Yaml Configuration Format

The Yaml Configuration Format extends the Vert.x Configuration Retriever and provides the
support for the Yaml Configuration Format format.

==== Using the Yaml Configuration Format

To use the Yaml Configuration Format, add the following dependency to the
_dependencies_ section of your build descriptor:

* Maven (in your `pom.xml`):

[source,xml,subs="+attributes"]
----
<dependency>
 <groupId>io.vertx</groupId>
 <artifactId>vertx-config-yaml</artifactId>
 <version>4.2.1</version>
</dependency>
<dependency>
 <groupId>io.vertx</groupId>
 <artifactId>vertx-config</artifactId>
 <version>4.2.1</version>
</dependency>
----

* Gradle (in your `build.gradle` file):

[source,groovy,subs="+attributes"]
----
compile 'io.vertx:vertx-config:4.2.1'
compile 'io.vertx:vertx-config-yaml:4.2.1'
----

==== Configuring the store to use YAML

Once added to your classpath or dependencies, you need to configure the
`link:../../apidocs/io/vertx/config/ConfigRetriever.html[ConfigRetriever]` to use this format:

[source, java]
----
ConfigStoreOptions store = new ConfigStoreOptions()
  .setType("file")
  .setFormat("yaml")
  .setConfig(new JsonObject()
    .put("path", "my-config.yaml")
  );

ConfigRetriever retriever = ConfigRetriever.create(vertx,
    new ConfigRetrieverOptions().addStore(store));
----

You just need to set `format` to `yaml`.