Reactive Rest Client + CloudEvents shenanigans

[manuelserradev]

Describe the bug

I'm opening this issue in correlation with the sibling one here on the cloudevents repo.

Apparently using the reactive rest client in conjunction with cloudevents inhibits the correct headers and content negotiation when trying to dispatch "structured encoded" events with the following annotation:

@POST
@Consumes(JsonFormat.CONTENT_TYPE)
Response publishCloudEvent(@PathParam("channel") String channel, CloudEvent cloudEvent);

I'm opening this issue because using quarkus-rest-client-jackson instead of the suggested quarkus-rest-client-reactive-jackson results in a correct behavior.

Expected behavior

The rest client dispatch "structured encoded" cloudevents. See here for the detailed spec.

Eg, an HTTP POST with the following body payload:

{
    "specversion" : "1.0",
    "type" : "User",
    "source": "io.cloudevents.examples/user",
    "id": "536808d3-88be-4077-9d7a-a3f162705f78",
    "subject": "SUBJ-0001",
    "data" : {
        "username": "jsmith",
        "firstName": "John",
        "lastName": "Smith",
        "age": 37
    }
}

Actual behavior

The rest client always dispatch "binary encoded" cloudevents. Ignoring the @Consumes annotation. See here for the detailed spec.

Eg. an HTTP POST with the following body payload:

{
  "username": "jsmith",
  "firstName": "John",
  "lastName": "Smith",
  "age": 37
}

How to Reproduce?

See this repo.

TL;DR:

• Checkout https://github.com/nitroin/cloudevents-quarkus-structured-repro
• Configure a server to receive the produced cloudevent in application.properties
• Start quarkus with mvn quarkus dev or quarkus dev
• Navigate to http://localhost:8080/hello
• Inspect the dispatched cloudevents

Output of uname -a or ver

Linux kunta-dell 5.15.79.1-microsoft-standard-WSL2 #1 SMP Wed Nov 23 01:01:46 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Output of java -version

openjdk version "17" 2021-09-14 OpenJDK Runtime Environment Microsoft-26987 (build 17+35) OpenJDK 64-Bit Server VM Microsoft-26987 (build 17+35, mixed mode, sharing)

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.15.3.Final

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

Apache Maven 3.8.6

Additional information

No response

[quarkus-bot]

/cc @Sgitario (rest-client), @cescoffier (rest-client), @geoand (rest-client)

[manuelserradev]

I'm closing this issue after verifying that removing a third-party dependency results in a correct behavior. See here.

[geoand]

Thanks for the update