Spike Curtis 04bd8f67ad Datastore handles creating objects atomically. ... In that commit, AtomicPutCreate takes previous = nil to Atomically create keys that don't exist. We need a create operation that is atomic to prevent races between multiple libnetworks creating the same object. Previously, we just created new KVs with an index of 0 and wrote them to the datastore. Consul accepts this behaviour and interprets index of 0 as non-existing, but other data backends do no. - Add Exists() to the KV interface. SetIndex() should also modify a KV so that it exists. - Call SetIndex() from within the GetObject() method on DataStore interface. - This ensures objects have the updated values for exists and index. - Add SetValue() to the KV interface. This allows implementers to define their own method to marshall and unmarshall (as bitseq and allocator have). - Update existing users of the DataStore (endpoint, network, bitseq, allocator, ov_network) to new interfaces. - Fix UTs.		2015-06-25 10:53:48 -07:00
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datastore.go	Datastore handles creating objects atomically.	2015-06-25 10:53:48 -07:00
datastore_test.go	Datastore handles creating objects atomically.	2015-06-25 10:53:48 -07:00
mock_store.go	Datastore handles creating objects atomically.	2015-06-25 10:53:48 -07:00