Knative

JVM since2.14.0 Native since2.14.0

Send and receive events from Knative.

What’s inside

Please refer to the above link for usage and configuration details.

Maven coordinates

Create a new project with this extension on code.quarkus.io

Or add the coordinates to your existing project:

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

Check the User guide for more information about writing Camel Quarkus applications.

Camel Quarkus limitations

vertx-websocket with Knative does not work with HTTP/2

The vertx-websocket extension is supported with Knative, but has important protocol compatibility constraints.

WebSocket connections require the HTTP/1.1 upgrade mechanism and are incompatible with HTTP/2. If your Knative application is intended to accept WebSocket connections, it must not allow negotiating the HTTP/2 protocol, or else clients will fail to upgrade to the WebSocket protocol.

This creates an incompatibility with the grpc extension, which requires HTTP/2.

If you need to use gRPC with Knative, you must configure HTTP/2 support. See Using HTTP2 and gRPC for configuration instructions.

To use WebSockets with Knative:

  • Ensure your Knative service does not negotiate HTTP/2

  • Configure ingress gateways and load balancers to use HTTP/1.1 for WebSocket routes

  • Do not enable HTTP/2 support if your application accepts WebSocket connections

For platform-specific configuration, refer to:

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