WeasyPrint AWS Lambda

Lambda Layer

Build layer:

$ make build/weasyprint-layer-python3.8.zip

# for future runtimes, eg: python3.9
# RUNTIME=python3.9 make build/weasyprint-layer-python3.9.zip

# to test your build run
$ make test.weasyprint

Deploy layer:

$ aws lambda publish-layer-version \
    --region <region> \
    --layer-name <name> \
    --zip-file fileb://build/weasyprint-layer-python3.8.zip

Environment variables expected by layer:

GDK_PIXBUF_MODULE_FILE="/opt/lib/loaders.cache"
FONTCONFIG_PATH="/opt/fonts"
XDG_DATA_DIRS="/opt/lib"

Lambda Function

Simple lambda function provided, it requires BUCKET=<bucket name> env variable if files stored on s3.

Example payload to print pdf from url and return link to s3:

{"url": "https://weasyprint.org/samples/report/report.html", "filename": "report.pdf"}

Example paylod to print png from html and css data and return png content encoded in base64:

{"html": "<html><h1>Header</h1></html>", "css": ["h1 { color: red }"], "filename": "report.png", "return": "base64"}

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