Jakarta Bean Validators not working in native mode for CloudEvents api

[restalion]

Hi All,
I'm working in a quarkus project using sdk-java api to create and receive events into a kubernetes cluster. If we execute the project using the JVM it is working fine, but when I launch it as a native image I see the error below:

javax.validation.NoProviderFoundException: Unable to create a Configuration, because no Jakarta Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath.

The problem seems to be in the validations included in cloudevents/sdk-java pom.xml:

        <dependency>
            <groupId>org.hibernate.validator</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>${hibernate-validator.version}</version>
        </dependency>

Expected behavior
Validations should work fine in JVM and Native.

Actual behavior
When executing in native mode we see an exception:
javax.validation.NoProviderFoundException: Unable to create a Configuration, because no Jakarta Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath.

To Reproduce
Steps to reproduce the behavior:

1. Clone the repo at https://github.com/restalion/quarkus-cloudevent-sample
2. Go to cloned folder and run project in dev mode ./mvnw quarkus:dev
3. Send a POST to localhost:8080/event-sample with header Content-Type:application/json and body {"code":1,"value":"This is a test"}
4. You should see a trace with the creation of the cloud event and all the headers related:
   
5. Now we will try to do the same but using the native image, so, compile the project in native: ./mvnw package -Pnative
6. Run the native image: target/quarkus-cloudevent-sample-1.0-SNAPSHOT-runner
7. Send a POST to localhost:8080/event-sample with header Content-Type:application/json and body {"code":1,"value":"This is a test"}
8. Now you will see an error as response:
   javax.validation.NoProviderFoundException: Unable to create a Configuration, because no Jakarta Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath.
   And, in logs, you can check that the cloud event was not created properly:
   

Configuration
All the configuration is available in github project

Screenshots
Screenshots previously shared.

Environment (please complete the following information):

• Output of uname -a or ver:

Darwin MacBook-Pro-de-Julio.local 19.3.0 Darwin Kernel Version 19.3.0: Thu Jan 9 20:58:23 PST 2020; root:xnu-6153.81.5~1/RELEASE_X86_64 x86_64

• Output of java -version:

openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b06)
OpenJDK 64-Bit GraalVM CE 19.3.1 (build 25.242-b06-jvmci-19.3-b07, mixed mode)

• GraalVM version (if different from Java):

openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b06)
OpenJDK 64-Bit GraalVM CE 19.3.1 (build 25.242-b06-jvmci-19.3-b07, mixed mode)

• Quarkus version or git rev:

    <quarkus.platform.artifact-id>quarkus-universe-bom</quarkus.platform.artifact-id>
    <quarkus.platform.group-id>io.quarkus</quarkus.platform.group-id>
    <quarkus.platform.version>1.2.1.Final</quarkus.platform.version>

• Build tool (ie. output of mvnw --version or gradlew --version):

Maven home: /.m2/wrapper/dists/apache-maven-3.6.2-bin/795eh28tki48bv3l67maojf0ra/apache-maven-3.6.2
Java version: 1.8.0_242, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/graalvm-ce-java8-19.3.1/Contents/Home/jre
Default locale: es_ES, platform encoding: UTF-8
OS name: "mac os x", version: "10.15.3", arch: "x86_64", family: "mac"

Additional context
No additional context needed.

[gsmet]

CloudEvent is not able to build the ValidatorFactory as it requires a specific bootstrap for native images.

Quarkus initializes a ValidatorFactory itself and you should use it everywhere.

What you can do is to inject the Validator via CDI where you initialize the CloudEvent and use this method https://github.com/cloudevents/sdk-java/blob/master/api/src/main/java/io/cloudevents/v03/CloudEventBuilder.java#L253 to inject it into the builder.

This method has been specifically added for Quarkus.

[restalion]

Thanks a lot Guillaume! It's working fine now. The code is updated in github but I add here the changes for future references:

I have injected the Validator in EventService class:
@Inject Validator validator;

And add a withValidator(validator) to the CloudEvent builder:

        CloudEventImpl<SampleEvent> ce =
            CloudEventBuilder.<SampleEvent>builder()
                .withType(type)
                .withId(id)
                .withTime(ZonedDateTime.now())
                .withDatacontenttype(ContentType.APPLICATION_JSON.toString())
                .withData(payload)
                .withExtension(tracing)
                .withSubject("Sample update")
                .withSource(URI.create("/sample-source"))
                .withValidator(validator)
                .build();