serverless-openapi-plugin
Serverless plugin to generate AWS serverless architecture from openApi definition.
It also generate validation (using Joi) for headers/query/params and body.
Configuration
On your serverless.yml add:
plugins: 
 -serverless-openapi-plugin
By default the plugin is looking for a definition.yml, but you can override this setting using:
customs: 
 definition: mydefinition.yml
In order to generate handlers, you need to specify the handler name at root or operation level with x-serverless-handler key.
Usage
Simple as:
serverless openapi