JavaScript
Since Camel 3.20
Camel allows JavaScript to be used as an Expression or Predicate in Camel routes.
For example, you can use JavaScript in a Predicate with the Content Based Router EIP.
Variables
| Variable | Type | Description |
|---|---|---|
this | Exchange | the Exchange is the root object |
context | CamelContext | the CamelContext |
exchange | Exchange | the Exchange |
exchangeId | String | the exchange id |
message | Message | the message |
body | Message | the message body |
headers | Map | the message headers |
properties | Map | the exchange properties |
Dependencies
To use JavaScript in your camel routes you need to add the dependency on camel-javascript which implements the JavaScript language (JavaScript with GraalVM).
If you use maven you could just add the following to your pom.xml, substituting the version number for the latest & greatest release (see the download page for the latest versions).
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-javascript</artifactId>
<version>x.x.x</version>
</dependency>Spring Boot Auto-Configuration
When using js with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:
<dependency>
<groupId>org.apache.camel.springboot</groupId>
<artifactId>camel-javascript-starter</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>The component supports 2 options, which are listed below.