cdk-lambda-alias-retention 2.1.0

cdk-lambda-alias-retention

cdk-lambda-alias-retention

Create lambda alias and retain it forever.

What's the problem?

When using AWS CDK to create lambda with version and alias, it will retain the latest alias only. See the sample code as blow:

# Example automatically generated from non-compiling source. May contain errors.
const fn = new lambda.DockerImageFunction(stackTest, 'TestLambda', {
    code: lambda.DockerImageCode.fromImageAsset(
    path.join(__dirname, '../lambda'),
    ),
    currentVersionOptions: {
    removalPolicy: RemovalPolicy.RETAIN,
    },
});

fn.currentVersion.addAlias('v1.0.0');

In general, the lambda code will be iterated continuously and the alias will be changed probably ever time, such as v1.0.1, v1.0.2, v1.0.3 etc...

AWS CDK don't support to retain old alias now and it support to retain old version only.

Usage

# Example automatically generated from non-compiling source. May contain errors.
new LambdaAliasRetention(stackTest, 'TestLambdaAliasRetention', {
    fn,
    lambdaAlias: 'v1',
});

Complete sample code is in src/integ.default.ts

It can use context or environemnt variable for lambdaAlias.