LibRSVG for AWS Lambda

Dockerfile to statically compile LibRSVG for AWS Lambda instances powered by Amazon Linux 2.x. Pre-built layers are available for both x86_64 and arm64 Lambdas.

Usage

The rsvg binary will be in /opt/bin/rsvg-convert after linking the layer to a Lambda function.

Download

The Lambda Layer ZIPs can be found in Releases.

In order to use it, download one of the zips, then deploy them as follows:

aws lambda publish-layer-version \
  --layer-name rsvg \
  --description "Librsvg layer for x86_64" \
  --license-info "MIT License" \
  --zip-file fileb://librsvg-lambda-layer.x86_64.zip \
  --compatible-architectures x86_64

aws lambda publish-layer-version \
  --layer-name rsvg-arm64 \
  --description "Librsvg layer for arm64" \
  --license-info "MIT License" \
  --zip-file fileb://librsvg-lambda-layer.aarch64.zip \
  --compatible-architectures arm64

Prerequisites

• Docker
• AWS command line utilities (just for deployment)

Compilation and deployment

• Clone the repository

git clone github.com/bubblydoo/librsvg-lambda-layer
cd librsvg-lambda-layer

• Start Docker services and build image (this might take a while)

docker build . --target librsvg-layer -t amazon-linux-librsvg-layer
# docker build . --target librsvg -t amazon-linux-librsvg
# docker build . --target builder -t amazon-linux-librsvg-builder

or for a multiplatform image:

docker buildx create --use # if you didn't make a builder yet
docker buildx build . --platform linux/amd64,linux/arm64 --target librsvg-layer -t amazon-linux-librsvg-layer

• Copy zip to ./dist

docker run --platform linux/amd64 -v "$PWD/dist":/dist amazon-linux-librsvg-layer
docker run --platform linux/arm64 -v "$PWD/dist":/dist amazon-linux-librsvg-layer

• Inspect layer content

unzip -l dist/librsvg-layer.x86_64.zip
unzip -l dist/librsvg-layer.aarch64.zip

• Deploy to AWS

aws lambda publish-layer-version \
  --layer-name rsvg \
  --description "Librsvg layer for x86_64" \
  --license-info "MIT License" \
  --zip-file fileb://dist/librsvg-layer.x86_64.zip \
  --compatible-architectures x86_64

aws lambda publish-layer-version \
  --layer-name rsvg-arm64 \
  --description "Librsvg layer for arm64" \
  --license-info "MIT License" \
  --zip-file fileb://dist/librsvg-layer.aarch64.zip \
  --compatible-architectures arm64

Compiled info

rsvg-convert: version

Caveats

• Images with xlink:href="file:// do not load properly. You can inline the files as a data:// uri as a workaround.
• Only jpeg and png builtin loaders are enabled (for usage with data://), but more can be enabled in Dockerfile

More information

For more information, check out:

• https://github.com/GNOME/librsvg

Author

Hans Otto Wirtz https://github.com/hansottowirtz Gojko Adzic https://gojko.net

License

• These scripts: MIT
• Rsvg: https://github.com/GNOME/librsvg/blob/master/COPYING
• Contained libraries all have separate licenses, check the respective web sites for more information