Kamelet Bindings Error Handler

Kamelet Binding`s offer a mechanism to specify an error policy to adopt in case an event produced by a source or consumed by a sink. Through the definition of an errorHandler you will be able to apply certain logic to the failing event, such as simply logging, ignoring the event or posting the event to a Sink.

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: my-kamelet-binding
spec:
  source: (1)
...
  sink: (2)
...
  errorHandler: (3)
1 Reference to the source that provides data
2 Reference to the sink where data should be sent to
3 Error Handler Configuration

Error Handler Types

We have different types of error handler: none, log and sink. The errorHandler parameter is optional.

No error handler

There may be certain cases where you want to just ignore any failure happening on your integration. In this situation just use a none error handler.

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: my-kamelet-binding
spec:
  source:
...
  sink:
...
  errorHandler:
    none: (1)
1 none error handler does not expect any configuration

Log error handler

Apache Camel offers a default behavior for handling any failure: log to standard output. However you can use the log error handler to specify other behaviors such as redelivery or delay policy.

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: my-kamelet-binding
spec:
  source:
...
  sink:
...
  errorHandler:
    log:
      parameters: (1)
        maximumRedeliveries: 3
        redeliveryDelay: 2000
1 Parameters belonging to the log error handler type

Sink error handler

The Sink is probably the most interesting error handler type as it allows you to redirect any failing event to any other component, such as a third party URI, a queue or even another Kamelet which will be performing certain logic with the failing event.

apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: my-kamelet-binding
spec:
  source:
...
  sink:
...
  errorHandler:
    sink:
      endpoint:
        ref: (1)
          kind: Kamelet
          apiVersion: camel.apache.org/v1alpha1
          name: error-handler
        properties:
          message: "ERROR!" (2)
          ...
      parameters:
        maximumRedeliveries: 1 (3)
        ...
1 You can use ref or uri. ref will be interpreted by the operator according the kind, apiVersion and name. You can use any Kamelet, KafkaTopic channel or Knative destination.
2 Properties belonging to the endpoint (in this example, to the Kamelet named error handler)
3 Parameters belonging to the sink error handler type
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