foo.core> (set (map :namespace (:metrics (cw/list-metrics {:region "us-east-1"} :namespace "AWS/EBS"))))
#{"AWS/DynamoDB" "AWS/EBS" "AWS/Events" "AWS/ECS" "AWS/NATGateway" "AWS/Lambda" "AWS/EC2" "" "AWS/ApplicationELB" "" "AWS/Logs" "AWS/S3"}

amazonica doesn't seem to be making requests to the cloudwatch API correctly

It's returning all the metrics and ignoring the :namespace keyword

nevermind