Rest

JVM since0.0.1 Native since0.0.1

Expose REST services and their OpenAPI Specification or call external REST services.

What’s inside

Please refer to the above links for usage and configuration details.

Maven coordinates

Create a new project with this extension on code.quarkus.io

Or add the coordinates to your existing project:

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-rest</artifactId>
</dependency>

Check the User guide for more information about writing Camel Quarkus applications.

Additional Camel Quarkus configuration

This extension depends on the Platform HTTP extension and configures it as the component that provides the REST transport.

Path parameters containing special characters with platform-http

When using the platform-http REST transport, some characters are not allowed within path parameter names. This includes the '-' and '$' characters.

In order to make the below example REST /dashed/param route work correctly, a system property is required io.vertx.web.route.param.extended-pattern=true.

import org.apache.camel.builder.RouteBuilder;

public class CamelRoute extends RouteBuilder {

    @Override
    public void configure() {
        rest("/api")
            // Dash '-' is not allowed by default
            .get("/dashed/param/{my-param}")
            .to("direct:greet")

            // The non-dashed path parameter works by default
            .get("/undashed/param/{myParam}")
            .to("direct:greet");

            from("direct:greet")
                .setBody(constant("Hello World"));
    }
}

There is some more background to this in the Vert.x Web documentation.

Configuring alternate REST transport providers

To use another REST transport provider, such as netty-http or servlet, you need to add the respective extension as a dependency to your project and set the provider in your RouteBuilder. E.g. for servlet, you’d have to add the org.apache.camel.quarkus:camel-quarkus-servlet dependency and the set the provider as follows:

import org.apache.camel.builder.RouteBuilder;

public class CamelRoute extends RouteBuilder {

    @Override
    public void configure() {
        restConfiguration()
                .component("servlet");
        ...
    }
}
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