== Spring Boot Example with Camel REST DSL and OpenApi

=== Introduction

This example illustrates how to use https://projects.spring.io/spring-boot/[Spring Boot] with http://camel.apache.org[Camel]. It provides a simple REST service that is created with http://camel.apache.org/rest-dsl.html[Camel REST DSL] and documented with http://swagger.io[OpenApi].

The project uses the `camel-spring-boot-starter` dependency, a Spring Boot starter dependency for Camel that simplifies the Maven configuration. 

The project also uses `camel-servlet` component as the HTTP transport component for Camel REST DSL.

=== Build

You can build this example using:

    $ mvn package

=== Run

You can run this example using:

    $ mvn spring-boot:run

You should see the following output when the application is launched:

[source,text]
----
...
[INFO] --- spring-boot-maven-plugin:1.5.10.RELEASE:run (default-cli) @ camel-example-spring-boot-rest-openapi ---
[...]
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.0.RELEASE)
[...]
2017-03-05 14:55:44.032  INFO 15312 --- [           main] o.a.camel.spring.SpringCamelContext      : Total 4 routes, of which 4 are started.
2017-03-05 14:55:44.034  INFO 15312 --- [           main] o.a.camel.spring.SpringCamelContext      : Apache Camel 2.22.0-SNAPSHOT (CamelContext: camel-1) started in 0.614 seconds
2017-03-05 14:55:44.131  INFO 15312 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-03-05 14:55:44.140  INFO 15312 --- [           main] o.a.c.example.springboot.Application     : Started Application in 6.265 seconds (JVM running for 21.092)
----

After the Spring Boot application is started, you can open the following URL in your web browser to access the REST endpoint and retrieve a list of users: http://localhost:8080/api/users

You can also access the REST endpoint from the command line:

[source,text]
----
$ curl http://localhost:8080/api/users
----

The command will produce the following output:

[source,json]
----
[ {
  "id" : 1,
  "name" : "John Coltrane"
}, {
  "id" : 2,
  "name" : "Miles Davis"
}, {
  "id" : 3,
  "name" : "Sonny Rollins"
} ]
----

The OpenApi documentation is located at: `\http://localhost:8080/api/api-doc` and can be retrieved with the following command:

[source,text]
----
$ curl http://localhost:8080/api/api-doc
----

The Spring Boot application can be stopped pressing `[CTRL] + [C]` in the shell.

=== Actuator

The actuator is available at: `http://localhost:8080/actuator/` such as metrics for Prometheus: `http://localhost:8080/actuator/prometheus`.

=== Help and contributions

If you hit any problem using Camel or have some feedback, then please
https://camel.apache.org/community/support/[let us know].

We also love contributors, so
https://camel.apache.org/community/contributing/[get involved] :-)

The Camel riders!