Update to redis-rb 3.1.0; replace #unknown_items transaction with a script #21
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I want this for weighted upload targets because script support in redis-rb ~> 3.0 is much improved over the 2.x series. However, some changes were required. The changes reflected in this commit: 1. Redis::Client#sismember returns true or false, not 1 or 0. 2. Redis::Client#sadd with a single item returns true or false, not 1 or 0. (Redis::Client#add with multiple items returns the number of items added.) 3. Redis::Client#hgetall now returns a Hash. 4. Redis::Client#zrange with with_scores set to true now returns an Array of Arrays, not a single Array with interleaved items and scores. 5. Redis::Client#eval now counts keys and argv length; there is no longer a need to explicitly specify the number of keys. Finally, I replaced Tracker#unknown_items with a script because I didn't want to mess about with the previous pipeline.
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It looks like the Cucumber scenarios are failing. They've been failing for a while, but I'll see if I can get them back up. |
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If you didn't see it yet, I fixed the scenarios. |
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This PR gets the tracker on redis-rb 3.1.0 (i.e. latest stable release), and updates all Redis code to match. Updating to the latest release made implementing the changes for #20 much easier. These changes make the tracker spec pass using redis-rb 3.1.0.
This PR also replaces the
multiblock inTransactions#unknown_itemswith a script, because that was one transaction I thought would be clearer as a script. AFAICT, the script has exactly the same effect and offers the same atomicity guarantees.