Package etcd has a generic implementation of a registry that stores things in etcd.

FilterList filters any list object that conforms to the api conventions, provided that 'm' works with the concrete type of list.

MatcherFunc makes a matcher from the provided function.

SelectionPredicate implements a generic predicate that can be passed to GenericRegistry's List or Watch methods.

Matcher can return true if an object matches the Matcher's selection criteria.

Registry knows how to store & list any runtime.Object.

AttrFunc returns label and field sets for List or Watch to compare against, or an error.