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serverless-apigw-canary-settings

v1.0.2

Published

Canary releases for API Gateway

Downloads

7

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Links

Git

Maintainers

erusnpmerusnpm

Keywords

APIGatewayCanaryServerlessAWS

Readme

This is the plugin of Serverless framework which let's to create canary deployment for API Gateway.

This addresses two things:

  1. Canary deployments for API Gateway
  2. Concrete lambda function version binding to API Gateway (instead of $LATEST, it will take current deployed lambda version)

Second point above enables API Gateway canary deployments since it binds concrete lambda version to concrete API Gateway deployment. It allows base version to point to concrete deployment, whilst canary can point to not yet promoted version. Using this principle, Blue/Green deployment can be achieved, meaning that canary can take either 100% or 0% traffic if needed.

Installation

Run npm install --save-dev serverless-apigw-canary-settings, and add this plugin to serverless.yml. It will hook to package phase, meaning either package or deploy phases will trigger this plugin if used as specified below.

Usage

Add custom settings for canary in serverless.yml file:

custom:
  apiGatewayDeployment:
    canary:
      trafficInPercentages: 0

then invoke serverless deploy --canaryDeployment true to deploy API Gateway to canary deployment.

Custom option --canaryDeployment requires true/false value in order to allow enable canary deployments for API Gateway. If value is true, then custom.apiGatewayDeployment settings are read from serverless.yml file and applied for canary deployment. Otherwise, no action is taken.