Cumulus reports usage statistics to the ESDIS Metrics System (EMS). Two types of reports are generated: ingest and distribution.
Cumulus creates three ingest related reports for EMS: Ingest, Archive and Archive Delete.
The Ingest report contains records of all granules, products, or files that have been ingested into Cumulus.
The Archive report contains records of all granules, products, or files that have been archived into Cumulus. It's similar to Ingest report.
The Archive Delete report lists granules, products, or files that were reported to the EMS and now have been deleted from Cumulus.
A scheduled Lambda task will run nightly that generates Ingest, Archive and Archive Delete reports.
Cumulus reports all data distribution requests that pass through the distribution API to EMS. In order to track these requests, S3 Server Access Logging must be enabled on all protected buckets.
You will need to enable logging for each bucket manually before distribution logging will work.
When enabling server access logging, the "Target bucket" should be set to your stack's internal bucket. The "Target prefix" should be set to "<STACK_NAME>/ems-distribution/s3-server-access-logs/", where "<STACK_NAME>" is replaced with the name of your Cumulus stack.
A scheduled Lambda task will run nightly that collects distribution events and builds an EMS distribution report.