Red Hat Camel K is no longer supported.
As of June 30, 2025, Red Hat build of Camel K has reached End of Life. The suggested replacements is Red Hat build of Apache Camel. For details about moving, see the Camel K to Camel Quarkus migration guide.Chapter 23. Extract Field Action
Extract a field from the body
23.1. Configuration Options Copy linkLink copied to clipboard!
The following table summarizes the configuration options available for the extract-field-action
Kamelet:
Property | Name | Description | Type | Default | Example |
---|---|---|---|---|---|
field * | Field | The name of the field to be added | string |
Fields marked with an asterisk (*) are mandatory.
23.2. Dependencies Copy linkLink copied to clipboard!
At runtime, the extract-field-action
Kamelet relies upon the presence of the following dependencies:
- github:openshift-integration.kamelet-catalog:camel-kamelets-utils:kamelet-catalog-1.6-SNAPSHOT
- camel:kamelet
- camel:core
- camel:jackson
23.3. Usage Copy linkLink copied to clipboard!
This section describes how you can use the extract-field-action
.
23.3.1. Knative Action Copy linkLink copied to clipboard!
You can use the extract-field-action
Kamelet as an intermediate step in a Knative binding.
extract-field-action-binding.yaml
23.3.1.1. Prerequisite Copy linkLink copied to clipboard!
Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.
23.3.1.2. Procedure for using the cluster CLI Copy linkLink copied to clipboard!
-
Save the
extract-field-action-binding.yaml
file to your local drive, and then edit it as needed for your configuration. Run the action by using the following command:
oc apply -f extract-field-action-binding.yaml
oc apply -f extract-field-action-binding.yaml
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23.3.1.3. Procedure for using the Kamel CLI Copy linkLink copied to clipboard!
Configure and run the action by using the following command:
kamel bind timer-source?message=Hello --step extract-field-action -p "step-0.field=The Field" channel:mychannel
kamel bind timer-source?message=Hello --step extract-field-action -p "step-0.field=The Field" channel:mychannel
This command creates the KameletBinding in the current namespace on the cluster.
23.3.2. Kafka Action Copy linkLink copied to clipboard!
You can use the extract-field-action
Kamelet as an intermediate step in a Kafka binding.
extract-field-action-binding.yaml
23.3.2.1. Prerequisites Copy linkLink copied to clipboard!
Ensure that you’ve installed the AMQ Streams operator in your OpenShift cluster and created a topic named my-topic
in the current namespace. Make also sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.
23.3.2.2. Procedure for using the cluster CLI Copy linkLink copied to clipboard!
-
Save the
extract-field-action-binding.yaml
file to your local drive, and then edit it as needed for your configuration. Run the action by using the following command:
oc apply -f extract-field-action-binding.yaml
oc apply -f extract-field-action-binding.yaml
Copy to Clipboard Copied! Toggle word wrap Toggle overflow
23.3.2.3. Procedure for using the Kamel CLI Copy linkLink copied to clipboard!
Configure and run the action by using the following command:
kamel bind timer-source?message=Hello --step extract-field-action -p "step-0.field=The Field" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic
kamel bind timer-source?message=Hello --step extract-field-action -p "step-0.field=The Field" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic
This command creates the KameletBinding in the current namespace on the cluster.
23.4. Kamelet source file Copy linkLink copied to clipboard!
https://github.com/openshift-integration/kamelet-catalog/extract-field-action.kamelet.yaml