file watch source File Watch Source

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Preview"

Receive events related to a file or folder. It may require a volume mounting on Kubernetes.

Configuration Options

The following table summarizes the configuration options available for the file-watch-source Kamelet:

Property Name Description Type Default Example

events *

Events

The type of events to consume

string

"CREATE,MODIFY,DELETE"

filePath *

Path to Watch

Path of file or folder to watch

string
Fields marked with (*) are mandatory.

Usage

This section summarizes how the file-watch-source can be used in various contexts.

Knative Source

The file-watch-source Kamelet can be used as Knative source by binding it to a Knative object.

file-watch-source-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: file-watch-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: file-watch-source
    properties:
      filePath: "The Path to Watch"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

Make sure you have Camel K installed into the Kubernetes cluster you’re connected to.

Save the file-watch-source-binding.yaml file into your hard drive, then configure it according to your needs.

You can run the source using the following command:

kubectl apply -f file-watch-source-binding.yaml

Dependencies

The Kamelet needs the following dependencies:

  • camel:file-watch

  • camel:kamelet

Binding to Knative using the Kamel CLI:

The procedure described above can be simplified into a single execution of the kamel bind command:

kamel bind file-watch-source -p "source.filePath=The Path to Watch" channel:mychannel

This will create the KameletBinding under the hood and apply it to the current namespace in the cluster.

Kafka Source

The file-watch-source Kamelet can be used as Kafka source by binding it to a Kafka topic.

file-watch-source-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: file-watch-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: file-watch-source
    properties:
      filePath: "The Path to Watch"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

Ensure that you’ve installed Strimzi and created a topic named my-topic in the current namespace. Make also sure you have Camel K installed into the Kubernetes cluster you’re connected to.

Save the file-watch-source-binding.yaml file into your hard drive, then configure it according to your needs.

You can run the source using the following command:

kubectl apply -f file-watch-source-binding.yaml

Binding to Kafka using the Kamel CLI:

The procedure described above can be simplified into a single execution of the kamel bind command:

kamel bind file-watch-source -p "source.filePath=The Path to Watch" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic

This will create the KameletBinding under the hood and apply it to the current namespace in the cluster.

Kamelet source file

Have a look at the following link:

https://github.com/apache/camel-kamelets/blob/main/file-watch-source.kamelet.yaml

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