docs/modules/ROOT/pages/slack-source.adoc

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= image:kamelets/slack-source.svg[] Slack Source

*Provided by: "Apache Software Foundation"*

*Support Level for this Kamelet is: "Preview"*

Receive messages from a Slack channel.

== Configuration Options

The following table summarizes the configuration options available for the `slack-source` Kamelet:
[width="100%",cols="2,^2,3,^2,^2,^3",options="header"]
|===
| Property| Name| Description| Type| Default| Example
| *channel {empty}* *| Channel| The Slack channel to receive messages from| string| | `"#myroom"`
| *token {empty}* *| Token| The token to access Slack. A Slack app is needed. This app needs to have channels:history and channels:read permissions. The Bot User OAuth Access Token is the kind of token needed.| string| | 
|===

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

== Usage

This section summarizes how the `slack-source` can be used in various contexts.

=== Knative Source

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

.slack-source-binding.yaml
[source,yaml]
----
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: slack-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: slack-source
    properties:
      channel: "#myroom"
      token: "The Token"
  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 `slack-source-binding.yaml` file into your hard drive, then configure it according to your needs.

You can run the source using the following command:

[source,shell]
----
kubectl apply -f slack-source-binding.yaml
----

==== *Dependencies*

The Kamelet needs the following dependencies:

- camel:jackson
- camel:slack
- 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:

[source,shell]
----
kamel bind slack-source -p "source.channel=#myroom" -p "source.token=The Token" channel:mychannel
----

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

=== Kafka Source

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

.slack-source-binding.yaml
[source,yaml]
----
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: slack-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: slack-source
    properties:
      channel: "#myroom"
      token: "The Token"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic
  
----

Ensure that you've installed https://strimzi.io/[Strimzi] and created a topic named `my-topic` in the current namespace.
Make also sure you have xref:latest@camel-k::installation/installation.adoc[Camel K installed] into the Kubernetes cluster you're connected to.

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

You can run the source using the following command:

[source,shell]
----
kubectl apply -f slack-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:

[source,shell]
----
kamel bind slack-source -p "source.channel=#myroom" -p "source.token=The Token" 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/slack-source.kamelet.yaml

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