AWS Lambda Notes

One task in the lambda handler is to distinguish between the different origins of the invocation (phone call, slack chat, test chat etc.). A way to figure out from where the function has been triggered is the requestAttributes field of the provided event. Here are the different structures respective to the origin.

AWS Lex Testing Chat

'requestAttributes': None

AWS Connect Invocation

'requestAttributes': {'x-amz-lex:accept-content-types': 'PlainText,SSML'}

Slack Chat Bot

'requestAttributes': {'x-amz-lex:channel-id': '***', 'x-amz-lex:webhook-endpoint-url': 'https://channels.lex.eu-west-1.amazonaws.com/slack/webhook/***', 'x-amz-lex:accept-content-types': 'PlainText', 'x-amz-lex:user-id': '***', 'x-amz-lex:slack-team-id': '***', 'x-amz-lex:slack-bot-token': '***', 'x-amz-lex:channel-name': 'Slack', 'x-amz-lex:channel-type': 'Slack'}