Bref Layer ARNs Resolver

This library provides a CLI tool and PHP API to resolve the latest Lambda Layer ARNs published by Bref, including layers from bref/bref and optionally from bref/extra-php-extensions.

Installation

Install via Composer:

composer require ttsuru/bref-layer-arns

If you also use layers from bref/extra-php-extensions, you should require it as well:

composer require bref/extra-php-extensions

Usage

CLI

Use the CLI to output a comma-separated list of ARNs for the specified layers:

vendor/bin/bref-layer-arns php-84-fpm gd-php-84 insights --region=ap-northeast-1

You can omit the region if you set the AWS_REGION environment variable:

export AWS_REGION=ap-northeast-1
vendor/bin/bref-layer-arns php-84-fpm gd-php-84 insights

The output will be something like:

arn:aws:lambda:ap-northeast-1:534081306603:layer:php-84-fpm:24,arn:aws:lambda:ap-northeast-1:403367587399:layer:gd-php-84:2,arn:aws:lambda:ap-northeast-1:580247275435:layer:LambdaInsightsExtension:14

To use ARM64-specific layers, pass arm-insights instead of insights:

vendor/bin/bref-layer-arns arm-php-84-fpm arm-insights --region=ap-northeast-1

Warning

bref/extra-php-extensions does not provide ARM64 layers. Only x86_64 is supported.

PHP API

You can also use it programmatically:

use Bref\LayerArns\Resolver;

$arns = Resolver::resolve(['php-84-fpm', 'gd-php-84'], 'ap-northeast-1');

Features

• Resolves layers from bref/bref
• Supports optional bref/extra-php-extensions
• Automatically determines correct AWS account ID
• CLI output ready for GitHub Actions or SAM parameter overrides

Testing

Install dev dependencies and run PHPUnit:

composer install
vendor/bin/phpunit

Usage with AWS SAM

You can use the resolved ARNs in your template.yaml with Parameters and Globals like this (supporting multiple layers):

Globals:
  Function:
    Layers: !Ref BrefLayerArns

Parameters:
  BrefLayerArns:
    Type: CommaDelimitedList
    Default: >-
      arn:aws:lambda:ap-northeast-1:534081306603:layer:php-84-fpm:24,
      arn:aws:lambda:ap-northeast-1:403367587399:layer:gd-php-84:2

And pass in the latest ARNs dynamically from GitHub Actions:

sam deploy --parameter-overrides BrefLayerArns=$(vendor/bin/bref-layer-arns php-84-fpm --region=$AWS_REGION)

Usage with GitHub Actions

You can dynamically resolve and inject the latest Bref Layer ARNs in your GitHub Actions workflow using this tool.

Example:

env:
  AWS_REGION: ap-northeast-1
  BREF_LAYERS: php-84-fpm gd-php-84 insights

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Set up PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '8.4'

      - name: Install dependencies
        run: composer install --no-dev

      - name: Resolve Bref Layer ARNs
        run: |
          BREF_LAYER_ARNS=$(vendor/bin/bref-layer-arns $BREF_LAYERS)
          if [ -z "$BREF_LAYER_ARNS" ]; then
            echo "Failed to resolve Bref layers." >&2
            exit 1
          fi
          echo "BREF_LAYER_ARNS=$BREF_LAYER_ARNS" >> $GITHUB_ENV

      - name: Deploy with SAM
        run: |
          sam deploy \
            --parameter-overrides BrefLayerArns=$BREF_LAYER_ARNS

Changelog

See CHANGELOG.md for release history.

License

MIT License – see LICENSE for full text.