2.100. REST OpenApi

A RestProducerFactory implementation must be available when using the rest-openapi extension. The currently known extensions are:

Maven users will need to add one of these dependencies to their pom.xml, for example:

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

Depending on which mechanism is used to load the OpenApi specification, additional dependencies may be required. When using the file resource locator, the org.apache.camel.quarkus:camel-quarkus-file extension must be added as a project dependency. When using ref or bean to load the specification, not only must the org.apache.camel.quarkus:camel-quarkus-bean dependency be added, but the bean itself must be annotated with @RegisterForReflection.

When using the classpath resource locator with native code, the path to the OpenAPI specification must be specified in the quarkus.native.resources.includes property of the application.properties file. For example:

quarkus.native.resources.includes=openapi.json

The model classes generation has been integrated with the quarkus-maven-plugin. So there’s no need to use the swagger-codegen-maven-plugin, instead put your contract files in src/main/openapi with a .json suffix. And add the generate-code goal to the quarkus-maven-plugin like:

<plugin>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-maven-plugin</artifactId>
    <executions>
        <execution>
            <goals>
                <goal>generate-code</goal>
            </goals>
        </execution>
    </executions>
</plugin>

It requires a specific package name for the model classes by using the quarkus.camel.openapi.codegen.model-package property of the application.properties file. For example:

quarkus.camel.openapi.codegen.model-package=org.acme

This package name should be added in camel.rest.bindingPackageScan as well.

The contract files in src/main/openapi needs to be added in the classpath since they could be used in Camel Rest DSL. So you can add src/main/openapi in pom.xml

<build>
    <resources>
        <resource>
            <directory>src/main/openapi</directory>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
        </resource>
    </resources>
</build>

When running in the native mode, the contract files must be specified the quarkus.native.resources.include like

quarkus.native.resources.includes=contract.json