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BallotCacheWriter

Writes WhoCanIVoteFor ballots to an S3 bucket.

This project is deployed to AWS Lambda. It fetches data from WhoCanIVoteFor. co.uk and writes it to an S3 bucket.

graph TD
    lambda["GetBallotsFunction"]
    eb["EventBridge schedule rate(1 minute)"] --> lambda
    lambda --> last_seen[Get last seen timestamp]
    last_seen -->|Pass last seen| WCIVF[WhoCanIVoteFor API]
    WCIVF -->|Top 100 ballots since last seen| lambda --> S3[S3 Bucket]
    S3 --> WWW
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Deployment

We use AWS SAM to deploy a CloudFormation stack that sets up the Lambda function and EventBridge rules

The S3 bucket needs to be manually created and passed in as a parameter store value BALLOT_CACHE_S3_BUCKET=[bucket_name].

Local development

If running locally files will be saved to a ballot_data directory.

To run:

python ballot_writer/get_ballots.py