serverless-apigateway-route-settings
About
A Serverless Framework Plugin which helps you configure route specific variables, such as throttling rate limits, detailed metrics etc (see CloudFormation RouteSettings) for Api Gateway v2 (HTTP). Also allows defaults to be set in the custom attribute of your serverless.yml.
Supported RouteSettings
ApiGateway v2 seems to only accept the following RouteSettings for Api Gateway v2 (HTTP):
- ThrottlingBurstLimit
- ThrottlingRateLimit
- DetailedMetricsEnabled
Get Started
npm install serverless-apigateway-route-settings
or
yarn add serverless-apigateway-route-settings
Edit your serverless.yml to use this plugin:
plugins:
- serverless-apigateway-route-settings
Next, edit your serverless.yml for DefaultRouteSettings. What you enter here will be the default for each route in the stage.
custom:
routeSettings:
burstLimit: 200
rateLimit: 400
detailedMetricsEnabled: true
You can override the default route settings/account defaults by configuring at the route level. for example:
functions:
hello:
handler: src/throttle_me.handler
events:
- httpApi:
path: /hello
method: GET
routeSettings:
rateLimit: 10
burstLimit: 5
detailedMetricsEnabled: false
Caveats
- Currently, if we are to deploy with default route settings specified, then remove them, they will persist, you MUST specify new default route settings. I aim to fix this in an update, will default to account levels.
- Doesn't work with pre existing API Gateways, eg if they are existing and we simply add routes in the serverless.yml. It is possible to add this plugin to an existing api gateway which is handled by serverless however.
Example serverless.yml
service: example
frameworkVersion: '2'
plugins:
- serverless-apigateway-route-settings
custom:
routeSettings:
detailedMetricsEnabled: true
rateLimit: 200
burstLimit: 30
provider:
name: aws
runtime: nodejs12.x
functions:
# Inherits the default route settings.
hello:
handler: src/helloWorld.handler
events:
- httpApi:
path: /hello
method: GET
# Overrides the default throttle rate limits.
lowerRateLimit:
handler: src/lowerRateLimit.handler
events:
- httpApi:
path: /throttle
method: GET
routeSettings:
rateLimit: 10
burstLimit: 3
What will be added to your CloudFormation template?
- DefaultRouteSettings will be added to your Stage.
- RouteSettings will be added to your Stage.
- The DependsOn attribute is edited for your Stage. We simply add any Route's with configured RouteSettings, to ensure the creation of the Routes before the Stage. Otherwise CloudFormation will error (as it tries to edit the RouteSettings for a Route that doesn't exist yet).
Issues
If you encounter any bugs, please let me know here, and I will aim to fix them soon