plack

Plack app example of aws-lambda-perl5-layer

This example provides a plack application example of aws-lambda-perl5-layer for building and packing a Lambda function.

Precondition

• Register a Lambda handler as handler.handle

Sequence

1. write a function to handler.pl (this must have handle subroutine) and app.psgi
2. arrange the dependency
   • please edit cpanfile
3. build it
4. upload the built zip archive

How to build

$ make build CONTAINER_TAG=x.x

x.x is the version of the perl runtime (e.g. 5.26, 5.28). You must build it with the same version to the layer's perl version.

How to publish a function

aws --profile "$PROFILE" --region "$REGION" lambda create-function \
        --function-name 'plack-app' \
        --runtime 'provided' \
        --role "$YOUR_ROLE_ARN" \
        --handler 'handler.handle' \
        --layers "arn:aws:lambda:${REGION}:${AWS_ACCOUNT}:layer:perl-${PERL_VERSION}-layer:1" \
        --zip-file 'fileb://func.zip'

Under the hood

Following processes are executed on the Docker container (Highly recommend: you should use moznion/lambda-perl-layer-foundation).

1. build the perl runtime with specified version
2. vendor the dependencies by Carton
3. zip components

See: build.sh

LICENSE

MIT