This DynamoDB store borrows some logic from HttpStore, in that Get,
Has and Put requests are dumped into channels that are watched by
code in goroutines and batched up to be sent to the backend.
A few structs have been factored out of http_store.go and moved to
remote_requests.go, where they are enhanced so that DynamoStore can use
them as well.
So far:
- It does not support Put. It can only be constructed with a SetBuilder,
then queried e.g. Has.
- It only supports ref.Refs as values.
- I'm not convinced about the naming. Perhaps SetChunker rather than
SetBuilder, FlatLevel rather that FlatSet, etc. I expect they will change.
- The test is fairly simplistic but there isn't much point testing this
exhaustively, since once we support mutation, the testing abstraction
will probably be with an Iterator.
Replace datastore head with a map of datasetID's to commits. Each commit in the map represents that dataset's head. Fixes#402. Fixes#60. Filed #404 about small window of potential conflict with updating root that needs to be resolved at some point. # Please enter the commit message for your changes. Lines starting
1) Get rid of temp file usage in FileStore. Instead, write to a buffer and then
dump to disk on Close().
2) Chk.Equals() uses reflection even if you call it on primitive types, which
can be surprisingly costly. Switch to a Chk.True() in a couple of hot paths.
