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AWS Lambda

We use S3 and Lambda from AWS. We store all xlsx files, pdf attachment files on S3 and built officer zip files on S3. We use Lambda to upload pdf files and create zip files on the fly.

  • All credentials are available in the encoded env files

Create AWS S3 buckets

  • Create bucket with name S3_BUCKET_OFFICER_CONTENT
  • Migrate CORS config to new s3 buckets
  • Migrate Management -> Lifecycle rules to new s3 buckets

Development

All Lambda source is at lambda directory. Each Lambda function is at a subdirectory, e.g. lambda/create_officer_zip. A Lambda function package should at least contain these files:

  • .env which contains FUNCTION_NAME variable
  • lambda_function.py which defined lambda_handler function
  • requirements.txt for installing packages via pip
  • All other packages and modules which is used by the lambda_handler function.

Note: Dont use package to name your packages, because we will install all 3rd party packages into package

  • Run tests with docker-compose run web python -m lambda.test

Deploy lambda function

  • Dev must create Lambda functions manually on AWS console
  • To deploy/update Lambda functions, use docker-compose run web lambda/deploy.sh