Red Hat SummitChapter 76. Telegram Source
Receive all messages that people send to your Telegram bot.
To create a bot, contact the @botfather account by using the Telegram app.
The source attaches the following header to the messages:
-
chat-id/ce-chatid: The ID of the chat where the message comes from.
76.1. 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 can obtain it from the Telegram @botfather. | string |
* = Fields marked with an asterisk are mandatory.
76.2. Dependencies
76.2.1. Quarkus dependencies
<dependencies>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifact>camel-quarkus-core</artifact>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifact>camel-quarkus-jackson</artifact>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifact>camel-quarkus-kamelet</artifact>
</dependency>
<dependency>
<groupId>org.apache.camel.quarkus</groupId>
<artifact>camel-quarkus-telegram</artifact>
</dependency>
<dependency>
<groupId>org.apache.camel.kamelets</groupId>
<artifact>camel-kamelets-utils</artifact>
<version>4.8.5</version>
</dependency>
</dependencies>76.3. Usage
76.3.1. Camel JBang usage
76.3.1.1. Prerequisites for JBang
- Install JBang.
You have executed the following command:
jbang app install camel@apache/camel
76.3.1.2. Running a route with JBang
Suppose you have a file named route.yaml with this content:
- route:
from:
uri: "kamelet:timer-source"
parameters:
period: 10000
message: 'test'
steps:
- to:
uri: "kamelet:log-sink"You can now run it directly through the following command.
camel run route.yaml76.3.2. 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/v1
kind: Pipe
metadata:
name: telegram-source-binding
spec:
source:
ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: telegram-source
properties:
authorizationToken: "The Token"
sink:
ref:
kind: Channel
apiVersion: messaging.knative.dev/v1
name: mychannel76.3.3. 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/v1
kind: Pipe
metadata:
name: telegram-source-binding
spec:
source:
ref:
kind: Kamelet
apiVersion: camel.apache.org/v1
name: telegram-source
properties:
authorizationToken: "The Token"
sink:
ref:
kind: KafkaTopic
apiVersion: kafka.strimzi.io/v1beta1
name: my-topic
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}