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2026.1
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This page describes Weik.io 2026.1, and the current release is 2026.2. Read this topic for 2026.2

Event Channels

Weik.io 2026.1

Route CloudEvents to external systems using Apache Camel Kamelets.

On this page

Event Channels route CloudEvents to other systems using Apache Camel Kamelets. A channel consumes CloudEvents from NATS JetStream and delivers them to the configured target system.

Configuration format#

Event channels are configured using YAML files:

apiVersion: weik.io/v1alpha1
kind: EventChannel
metadata:
  name: slack-notifications
  description: Send events to Slack channel
spec:
  type: slack
  parameters:
    webhookUrl: "{{slack_webhook}}"
    channel: "#notifications"
  variables:
    - slack_webhook: "{{sys:SLACK_WEBHOOK_URL}}"
  requirements:
    network: "true"

Applying configuration#

Use the Weik.io CLI to apply event channel configurations:

Terminal
weikio config apply filename.yaml

API endpoints#

  1. GET /eventchannels/configurations

    • Returns all event channels
    • Requires “EventChannel.Read” policy

  2. GET /eventchannels/configurations/{name}

    • Returns a specific event channel by name
    • Requires “EventChannel.Read” policy

Event channel types#

Event channels are based on Apache Camel Kamelets. You can use any sink Kamelet from the Apache Camel Kamelet catalog.

Slack channel#

apiVersion: weik.io/v1alpha1
kind: EventChannel
metadata:
  name: slack-notifications
  description: Send events to Slack channel
spec:
  type: slack
  parameters:
    webhookUrl: "{{slack_webhook}}"
    channel: "#notifications"
  variables:
    - slack_webhook: "{{sys:SLACK_WEBHOOK_URL}}"
  requirements:
    network: "true"

AWS S3 channel#

apiVersion: weik.io/v1alpha1
kind: EventChannel
metadata:
  name: s3-archive
  description: Archive events to AWS S3 bucket
spec:
  type: aws-s3
  parameters:
    bucketNameOrArn: "events-archive"
    accessKey: "{{aws_access_key}}"
    secretKey: "{{aws_secret_key}}"
    region: "us-east-1"
    autoCreateBucket: "true"
  variables:
    - aws_access_key: "{{sys:AWS_ACCESS_KEY}}"
    - aws_secret_key: "{{sys:AWS_SECRET_KEY}}"
  requirements:
    network: "true"

HTTP channel#

apiVersion: weik.io/v1alpha1
kind: EventChannel
metadata:
  name: webhooksite-http
  description: Send events to Webhooksite
spec:
  type: http
  parameters:
    url: "{{target}}"
    method: "POST"
  variables:
    - target: "{{sys:webhooksite}}"

Event processing#

When an event channel is configured:

  1. A NATS JetStream stream is automatically created

    • Stream name: eventchannel-{name}-stream
    • Subject: eventchannel.{name}
    • Republish configuration to eventchannelprocessing.{name}

  2. An Integration Flow is created using the specified Kamelet

    • Flow reads CloudEvents from the NATS processing subject
    • CloudEvents are sent to the target system using the sink Kamelet

Integration with other features#

Variables support#

Event channels can use variables in their configurations:

apiVersion: weik.io/v1alpha1
kind: EventChannel
metadata:
  name: s3-archive
spec:
  type: aws-s3
  parameters:
    bucketNameOrArn: "events-archive"
    accessKey: "{{aws_access_key}}"
    secretKey: "{{aws_secret_key}}"
  variables:
    - aws_access_key: "{{sys:AWS_ACCESS_KEY}}"
    - aws_secret_key: "{{sys:AWS_SECRET_KEY}}"

Requirements#

Event channels support requirements specification:

apiVersion: weik.io/v1alpha1
kind: EventChannel
metadata:
  name: slack-notifications
spec:
  type: slack
  parameters:
    webhookUrl: "{{slack_webhook}}"
  variables:
    - slack_webhook: "{{sys:SLACK_WEBHOOK_URL}}"
  requirements:
    network: "true"

Next steps#