This example demonstrates how to use JPA and Spring Data along with Camel's REST DSL to expose a RESTful API that performs CRUD operations on a database.
It generates orders for books referenced in database at a regular pace. Orders are processed asynchronously by another Camel route. Books available in database as well as the status of the generated orders can be retrieved via the REST API.
It relies on Swagger to expose the API documentation of the REST service.
You can build this example using:
$ mvn package
You can run this example with Maven using:
$ mvn spring-boot:run -Dspring.profiles.active=dev
Alternatively, you can also run this example using the executable JAR:
$ java -jar -Dspring.profiles.active=dev target/camel-example-spring-boot-rest-jpa-${project.version}.jar
This uses an embedded in-memory HSQLDB database. You can use the default Spring Boot profile in case you have a MySQL server available for you to test.
When the Camel application runs, you should see the following messages being logged to the console, e.g.:
2016-09-02 09:54:29.702 INFO 27253 --- [mer://new-order] generate-order : Inserted new order 1 2016-09-02 09:54:31.597 INFO 27253 --- [mer://new-order] generate-order : Inserted new order 2 2016-09-02 09:54:33.596 INFO 27253 --- [mer://new-order] generate-order : Inserted new order 3 2016-09-02 09:54:34.637 INFO 27253 --- [rts.camel.Order] process-order : Processed order #id 1 with 7 copies of the «Camel in Action» book 2016-09-02 09:54:34.641 INFO 27253 --- [rts.camel.Order] process-order : Processed order #id 2 with 4 copies of the «Camel in Action» book 2016-09-02 09:54:34.645 INFO 27253 --- [rts.camel.Order] process-order : Processed order #id 3 with 1 copies of the «ActiveMQ in Action» book 2016-09-02 09:54:35.597 INFO 27253 --- [mer://new-order] generate-order : Inserted new order 4 2016-09-02 09:54:37.601 INFO 27253 --- [mer://new-order] generate-order : Inserted new order 5 2016-09-02 09:54:39.605 INFO 27253 --- [mer://new-order] generate-order : Inserted new order 6 2016-09-02 09:54:39.668 INFO 27253 --- [rts.camel.Order] process-order : Processed order #id 4 with 7 copies of the «Camel in Action» book 2016-09-02 09:54:39.671 INFO 27253 --- [rts.camel.Order] process-order : Processed order #id 5 with 1 copies of the «ActiveMQ in Action» book 2016-09-02 09:54:39.674 INFO 27253 --- [rts.camel.Order] process-order : Processed order #id 6 with 4 copies of the «Camel in Action» book
You can then access the REST API directly from your Web browser, e.g.:
The Camel application can be stopped pressing ctrl+c in the shell.
The example provides API documentation of the service using Swagger using the context-path camel-rest-jpa/api-doc. You can access the API documentation from your Web browser at http://localhost:8080/camel-rest-jpa/api-doc.
If you hit an problems please let us know on the Camel Forums http://camel.apache.org/discussion-forums.html
Please help us make Apache Camel better - we appreciate any feedback you may have. Enjoy!
The Camel riders!