Calling REST APIs From Camel Routes

This article covers calling a REST API from a Camel route. We will try to call the GET endpoint below from a camel route.

http://dummy.restapiexample.com/api/v1/employees

Let's create a Spring Boot Camel microservice.

In the pom.xml of the microservice, add the dependency below:

<dependency>

    <groupId>org.apache.camel.springboot</groupId>

    <artifactId>camel-http-starter</artifactId>

    <version>3.8.0</version>

</dependency>

Configuring the REST Client Route in the Microservice

restConfiguration() is used to configure the host and the port.

The route is configured to run every 10 secs and call the REST API endpoint using the GET method. 

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package com.vignesh.cameldemob.route.b;

import org.apache.camel.builder.RouteBuilder;

import org.springframework.stereotype.Component;

@Component

public class RestAPIClientRoute extends RouteBuilder {

    @Override

    public void configure() throws Exception {

        restConfiguration().host("dummy.restapiexample.com").port(80);

        from("timer:rest-client?period=10s")

                .to("rest:get:/api/v1/employees")

                .log("${body}");

    }

}

Testing

Start the application. You can see that the timer is triggered every 10 secs, and the REST API endpoint is called.