docs/modules/ROOT/pages/value-to-key-action.adoc

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= image:kamelets/value-to-key-action.svg[] Value to Key Action

*Provided by: "Apache Software Foundation"*

Replace the Kafka record key with a new key formed from a subset of fields in the body

== Configuration Options

The following table summarizes the configuration options available for the `value-to-key-action` Kamelet:
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|===
| Property| Name| Description| Type| Default| Example
| *fields {empty}* *| Fields| Comma separated list of fields to be used to form the new key| string| | 
|===

NOTE: Fields marked with ({empty}*) are mandatory.

== Usage

This section summarizes how the `value-to-key-action` can be used in various contexts.

=== Knative Action

The `value-to-key-action` Kamelet can be used as intermediate step in a binding.

.value-to-key-action-binding.yaml
[source,yaml]
----
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: value-to-key-action-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: timer-source
    properties:
      message: "Hello"
  steps:
  - ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: value-to-key-action
    properties:
      fields: "The Fields"
  sink:
    ref:
      kind: InMemoryChannel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

----

Make sure you have xref:latest@camel-k::installation/installation.adoc[Camel K installed] into the Kubernetes cluster you're connected to.

Save the `value-to-key-action-binding.yaml` file into your hard drive, then configure it according to your needs.

You can run the action using the following command:

[source,shell]
----
kubectl apply -f value-to-key-action-binding.yaml
----
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