No (public) way to derive a service name from a client

[David Chelimsky]

Problem

There is no public API to retrieve the service name from the client. We've got a wrapper for aws/invoke that logs information about the request, including the AWS service that we're accessing, and we'd like to be able to derive that from the client instead of having to provide it to the wrapper function.

[David Chelimsky]

Some background: pre-release versions of client were records, so they looked like maps. One problem was they contained a lot of information, some of which we'd not want printed (credentials), and the information wasn't really structured well for human consumption. There is an internal function we use to access this info to support various operations, and there is also a not-really-documented datafy implementation. These undocumented ways to get at the data give us:

(-> client cognitect.aws.client.protocol/-get-info :service :metadata :cognitect.aws/service-name)
(-> client datafy :service :metadata :cognitect.aws/service-name)

Some things to consider:

• document support for datafy
• add an :api key to the datafied client, supporting (-> client datafy :api)
• make the client behave like a map, but don't expose all of its internals, e.g. provide keyword access and print any of
  • {:api "s3" :region "us-east-1"}
  • #aws-api/client{:api "s3" :region "us-east-1"}

Other ideas and feedback on these are welcome.

[David Chelimsky]

We already have keyword access directly on the client to keys like :region and :endpoint, so we could add :api to that.

[David Chelimsky]

586dbd5

[David Chelimsky]

Released in 0.8.620