NullPointerException in Resteasy Reactive Client due to no Configuration

[chonton]

Describe the bug

When using classic jaxrs ClientBuilder with implementation from Resteasy Reactive Client jars, the configuration is not initialized.

Expected behavior

ClientRequestFilter(s) successfully registered with classic ClientBuilder

Actual behavior

NullPointerException thrown from org.jboss.resteasy.reactive.client.impl.ClientBuilderImpl, line 313

How to Reproduce?

With dependencies:

io.quarkus.resteasy.reactive:resteasy-reactive-common:jar:2.7.1.Final
org.jboss.spec.javax.ws.rs:jboss-jaxrs-api_2.1_spec:jar:2.0.1.Final

Use the following code:

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.ClientRequestFilter;

public static void main(String args[]) {
    ClientBuilder clientBuilder = ClientBuilder.newBuilder();
    for (ClientRequestFilter filter : filters) {
      // following line has NPE
      clientBuilder.register(filter);
    }
}

Output of uname -a or ver

Darwin C02YD0B0JG5J.corp.proofpoint.com 20.6.0 Darwin Kernel Version 20.6.0: Wed Jan 12 22:22:42 PST 2022; root:xnu-7195.141.19~2/RELEASE_X86_64 x86_64

Output of java -version

openjdk version "11.0.12" 2021-07-20

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.7.1.Final

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

Apache Maven 3.8.4 (9b656c72d54e5bacbed989b64718c159fe39b537)

Additional information

No response

[quarkus-bot]

/cc @FroMage, @geoand, @stuartwdouglas

[geoand]

Does the same thing happen if you include quarkus-jaxrs-client-reactive and run your test as Quarkus application instead of a vanilla main?