telegram source Telegram Source

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Preview"

Receive all messages that people send to your Telegram bot.

To create a bot, contact the @botfather account using the Telegram app.

The source attaches the following headers to the messages:

  • chat-id / ce-chatid: the ID of the chat where the message comes from

Configuration Options

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

Property Name Description Type Default Example

authorizationToken *

Token

The token to access your bot on Telegram. You you can obtain it from the Telegram @botfather.

string

Fields marked with an asterisk (*) are mandatory.

Dependencies

At runtime, the `telegram-source Kamelet relies upon the presence of the following dependencies:

  • camel:jackson

  • camel:kamelet

  • camel:telegram

  • camel:core

Usage

This section describes how you can use the telegram-source.

Knative Source

You can use the telegram-source Kamelet as a Knative source by binding it to a Knative object.

telegram-source-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: telegram-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: telegram-source
    properties:
      authorizationToken: "The Token"
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

Prerequisite

You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the telegram-source-binding.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the source by using the following command:

    kubectl apply -f telegram-source-binding.yaml

Procedure for using the Kamel CLI

Configure and run the source by using the following command:

kamel bind telegram-source -p "source.authorizationToken=The Token" channel:mychannel

This command creates the KameletBinding in the current namespace on the cluster.

Kafka Source

You can use the telegram-source Kamelet as a Kafka source by binding it to a Kafka topic.

telegram-source-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: telegram-source-binding
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: telegram-source
    properties:
      authorizationToken: "The Token"
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

Prerequisites

  • You’ve installed Strimzi.

  • You’ve created a topic named my-topic in the current namespace.

  • You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the telegram-source-binding.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the source by using the following command:

    kubectl apply -f telegram-source-binding.yaml

Procedure for using the Kamel CLI

Configure and run the source by using the following command:

kamel bind telegram-source -p "source.authorizationToken=The Token" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic

This command creates the KameletBinding in the current namespace on the cluster.