swodlr-user-notify

A microservice for emailing users who have requested granules, once the products are finished generating.

Workflow

swodlr-user-notify is triggered by a SQS topic which fires off the Lambda. This SQS topic is listening to a SNS topic which receives messages from swodlr-raster-create. These messages follow the jobset spec from swodlr-schemas and are directly sent from the swodlr-raster-create pipeline.

This means that there is no inherent "request" within the input data. Instead this service determines its own trigger conditions for sending out an email to users. swodlr-user-notify is setup to trigger when the input jobset contains a job that was a success and also at the submit_raster stage which indicates it is at the end of the SWODLR generation pipeline.

Once this is determined, swodlr-user-notify then performs a lookup for all users who requested this product while it was still in the NEW phase. This lookup is performed in two stages:

1. Looking up the timestamp of when the product was last in the NEW state
2. Looking up users who have this product in their histories on or after the NEW status timestamp

Notes

swodlr-user-notify utilizes AWS Simple Email Service to send out emails to its users. Due to the way that CCS, the organization that oversees NGAP (the platform SWODLR runs on), we utilize a "FromEmailAddressIdentityArn" from an externally managed account which authorizes sending from the no-reply@nasa.gov address.