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Chapter 68. Telegram Source
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
68.1. 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.
68.2. Dependencies
				At runtime, the telegram-source Kamelet relies upon the presence of the following dependencies:
			
- camel:jackson
- camel:kamelet
- camel:telegram
- camel:core
68.3. Usage
				This section describes how you can use the telegram-source.
			
68.3.1. Knative Source
					You can use the telegram-source Kamelet as a Knative source by binding it to a Knative object.
				
telegram-source-binding.yaml
68.3.1.1. Prerequisite
Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you’re connected to.
68.3.1.2. Procedure for using the cluster CLI
- 
								Save the telegram-source-binding.yamlfile to your local drive, and then edit it as needed for your configuration.
- Run the source by using the following command: - oc apply -f telegram-source-binding.yaml - oc apply -f telegram-source-binding.yaml- Copy to Clipboard Copied! - Toggle word wrap Toggle overflow 
68.3.1.3. 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
kamel bind telegram-source -p "source.authorizationToken=The Token" channel:mychannelThis command creates the KameletBinding in the current namespace on the cluster.
68.3.2. Kafka Source
					You can use the telegram-source Kamelet as a Kafka source by binding it to a Kafka topic.
				
telegram-source-binding.yaml
68.3.2.1. Prerequisites
						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.
					
68.3.2.2. Procedure for using the cluster CLI
- 
								Save the telegram-source-binding.yamlfile to your local drive, and then edit it as needed for your configuration.
- Run the source by using the following command: - oc apply -f telegram-source-binding.yaml - oc apply -f telegram-source-binding.yaml- Copy to Clipboard Copied! - Toggle word wrap Toggle overflow 
68.3.2.3. 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
kamel bind telegram-source -p "source.authorizationToken=The Token" kafka.strimzi.io/v1beta1:KafkaTopic:my-topicThis command creates the KameletBinding in the current namespace on the cluster.
68.4. Kamelet source file
https://github.com/openshift-integration/kamelet-catalog/telegram-source.kamelet.yaml