The recommended way to create a local configuration file for the Events Processor service is through CDF's installer.
Once you had deployed cdf to your AWS account, you can generate .env file to be used for your local development
The instruction to generate the local file can be found here. The .env file will be populated with resources and options that are specified during the deployment wizard flow.
# The allowed CORS origin to validate requests against.
CORS_ORIGIN=*
CORS_EXPOSED_HEADERS=content-type,location
# If a custom domain has been configured for this module, specifying its base path here will remove
# the base path from the request to allow the module to map the incoming request to the correct lambda handler
CUSTOMDOMAIN_BASEPATH=
SUPPORTED_API_VERSIONS=application/vnd.aws-cdf-v1.0+json,application/vnd.aws-cdf-v2.0+json
#Application logging level. Set to (in order) error, warn, info, verbose, debug or silly.
LOGGING_LEVEL=info
PORT=3000