Enable Compare and Set (CAS) for Sets

[somethingnew2-0]

In the documentation for the methods it states Set a value in the Consul Key/Value store, using the CAS mechanism to ensure that the set is atomic. However it appears that only ?index= is used for a blocking call to the consul server. This doesn't prevent concurrent writes I believe as another consul server could update the value before the original call is set. I could be mistaken, however, as since it using a blocking query the call to consul should return until the raft quorum has accepted the value.

What I would suggest though is that consul does include a cas method with ?cas=<index> instead of just ?index=<index> as specified in the consul http api doc. I could be wrong though.

[gmr]

Good find, I think this is something that changed from when I originally wrote the code (Consul 0.2 iirc). Anyway, I'll address this in 0.3.0 which should drop soon.

[gmr]

This is dropping today in 0.4.0

[somethingnew2-0]

Awesome!