-
You should know how to build.
-
Go through the Quarkus extension author’s guide to get an idea of what is expected from you.
-
Make sure that nobody else works on the same extension already by searching through the GitHub issues.
-
Let others know that you work on the given extension by either creating a new issue or asking to assign an existing one to you.
-
Scaffold the necessary Maven modules using
quarkus-maven-plugin
. As an example let’s add a new extension for supporting an imaginary Camel componentfoo-abc
:$ cd camel-quarkus $ mvn cq:create -N -Dcq.artifactIdBase=foo-abc
where:
-
foo-abc
is the unique part of the new extension’sartifactId
without thecamel-quarkus-
prefixThe above sequence of commands does the following:
-
It creates three new Maven modules under the
extensions
directory:camel-quarkus-foo-abc-parent
,camel-quarkus-foo-abc
(a.k.a. the runtime module) andcamel-quarkus-foo-abc-deployment
. -
These three modules are linked where necessary:
-
camel-quarkus-foo-abc-parent
is added to the<modules>
ofcamel-quarkus-extensions
-
camel-quarkus-foo-abc
is added to the<dependencyManagement>
of the runtime BOM (Bill of Materials)poms/bom/pom.xml
-
camel-quarkus-foo-abc-deployment
is added to the<dependencyManagement>
of the deployment BOM (Bill of Materials)poms/bom-deployment/pom.xml
-
-
It creates a basic
FooAbcProcessor
class in the deployment module. -
It also creates a stub of an integration test module under
integration-tests/foo-abc
.
-
-
Add the extension name to the right category in
tooling/scripts/test-categories.yaml
file.Compilation performed immediately after generating the modules should pass flawlessly but running the tests will fail because the test project needs to get finished. You need to build
poms/bom
andpoms/bom-deployment
one time first. -
Review the generated
extensions/foo-abc/runtime/src/main/resources/META-INF/quarkus-extension.yaml
file.The
description
comes from Camel Catalog. If it looks improper or too long due to concatenation of multiple component descriptions, you may override it by setting an explicit<description>
in the runtimepom.xml
of your new extension. If you think the value coming from Camel Catalog should be changed, please file a new Camel issue and ask to fix the metadata for the given Camel component.If there is some important keyword missing in both the
name
anddescription
through which your new extension should definitely be findable on {link-quarkus-code-generator}, consider setting<quarkus.metadata.keywords>
property in your runtimepom.xml
.Run
mvn -N cq:update-quarkus-metadata
from the source tree’s root directory to re-generate thequarkus-extension.yaml
file.Check the Extension metadata page for more details about the
quarkus-extension.yaml
file -
Review the dependencies in the generated runtime and deployment modules. In case the given library is supported by Quarkus, you may want to add a dependency on the corresponding Quarkus extension.
-
Complete the integration test module under
integration-tests/foo-abc
, following the Extension testing guide. Make sure the tests are passing both in the JVM mode (mvn test
) and in the native mode (mvn verify -Pnative
). -
In case of problems, consult the Quarkus extension author’s guide, ask for help in the given GitHub issue or via Camel Quarkus chat.
-
Read the Extension documentation page and add
configuration.adoc
,usage.adoc
, etc. insrc/main/doc
directory of the runtime module if necessary.After completing the extension documentation, run `mvn clean install -DskipTests` from the root of the source tree to add your extension to the autogenerated list of extensions.
-
Before sending a pull request, please make sure you have run the following Maven command from the project root folder:
$ mvn process-resources -Pformat
The above command will perform the following tasks:
-
Add license headers to the new files
-
Re-generate the list of extensions and the Camel Quarkus Catalog
-
Sort elements in various POM files properly
Review the result visually.
-
-
Please squash your commits before sending a pull request.
Good luck!