telegram-stepfunctions-bot
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Andrii-D
Serverless Telegram bot made on 4 AWS Lambda chained by AWS Step Functions. All of this written on Serverless Framework using plugins.
Telegram bot on AWS Step Functions
Serverless Telegram bot made on 4 AWS Lambda chained by AWS Step Functions. All of this written on Serverless Framework using plugins.
This is an example on how to build a simple Telegram bot backend using AWS Lambda functions and AWS Dynamo DB to store messages and AWS Step Function to chain Lambdas.
Deploying
- Setup AWS credentials
- Install Serverless Framework
- Install two plugins:
serverless-step-functionsandserverless-pseudo-parameters - Clone this repo
- Deploy:
sls deploy
Architecture
All messages from your Bot will come to the State Machine first.
State machine will invoke two Lambda function in parallel with same payload:
log - will just save payload to DynamoDB and receive - will parse the payload and check for the specific auth message.
receive will pass the result to the next state: AuthOrNot - which is not a Lambda function but just a decider. It will check the result of previous function and either invoke authorize or respond Lambda function.
authorize is aimed to send a callback to your website to authorize the user if needed. The respond function will just send a response to the chatbot.
Too complex?
Here is an example of super simple Telegram bot with only one Lamdba: https://github.com/Andrii-D/serverless-telegram-bot
Andrii-D