How to write a Camel Quarkus extension for a Camel component/endpoint?

Question

I have an own camel component/endpoint that I used successfully in many routes in a Spring Boot App. I am trying to migrate to camel quarkus and use the same routes in my application.

It's not possible to use this component/endpoint in my camel-quarkus aplication by simply adding the related dependency: quarkus is not able to discover this component/endpoint as does Spring Boot.

The obvious solution is to write a quarkus extension that uses this camel-component under the hood: quarkus extensions like jdbc, file, sql and so on are implemented using the corresponding camel-components.

If we take a look into the pom-xml of sql of its runtime module, we find that it's using the equivalent camel-sql component:

<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-sql</artifactId>
</dependency>

My problem is that quarkus still not discover the component/endpoint even if building by project (I am using eclipse), quarkus shows that it has installed my extension. I searched for a long time in the internet but didn't find any helpfull source.

Do you mean you are trying to use a custom or third party Camel component on Quarkus? — James Netherton, Jul 01 '21 at 16:12
[James Netherton](https://stackoverflow.com/users/8627215/james-netherton) : thank you for your enquiry. I have meanwhile found a solution that I will add as answer. — Meziane, Jul 05 '21 at 18:53

score 0 · Answer 1 · answered Jul 01 '21 at 14:28

use this dependencies . all quarkus dependecies starts with group id is org.apache.camel.quarkus and artifact camel-quarkus-xxx

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

for postgresql

<dependency>
  <groupId>io.quarkus</groupId>
  <artifactId>quarkus-jdbc-postgresql</artifactId>
</dependency>

Meziane · Accepted Answer · 2021-07-07T12:57:08.847

The obvious solution is not to write an extra extension. The Quarkus-Runtime discovers the classes in a module or a third-party dependency if and only if:

the third-party dependency is indexed in the host-project: By adding the following entries to the .properties file:

quarkus.index-dependency..group-id=<group-id>
quarkus.index-dependency..artifact-id=<artifact-id>

or .yaml file:

quarkus:  
   index-dependency:
     <name>:
        group-id: <group-id>
        artifact-id: <artifact-id>

where <group-id> and <artifact-id> are third-party ones.

The jandex-maven-plugin is present in the pom.xml of this module or third-party dependency
An empty beans.xml is present under src/main/resorces/META-INF of this module/dependency

I find the answer to my question in this post.

How to write a Camel Quarkus extension for a Camel component/endpoint?

2 Answers2