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https://github.com/joyieldInc/predixy.git
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542749b0d3
Prevent MSETNX from being split across shards to preserve atomicity. Adds msetnx_atomicity test and runs it in the harness.
44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
#!/usr/bin/env python
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#
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# Verify MSETNX does not partially apply changes when it returns 0
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#
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import argparse
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import sys
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import redis
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def run_test(host, port):
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c = redis.StrictRedis(host=host, port=port)
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c.delete("msetnx_k1", "msetnx_k2")
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c.set("msetnx_k1", "existing")
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try:
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r = c.execute_command("MSETNX", "msetnx_k1", "v1", "msetnx_k2", "v2")
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except Exception as exc:
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# If proxy rejects cross-shard MSETNX, this is acceptable.
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return True
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if r not in (0, b"0", False):
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print("FAIL: expected MSETNX result 0, got:", r)
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return False
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if c.get("msetnx_k2") is not None:
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print("FAIL: MSETNX partially applied when it returned 0")
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return False
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return True
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(conflict_handler='resolve', description="MSETNX atomicity test")
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parser.add_argument("-h", "--host", default="127.0.0.1")
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parser.add_argument("-p", "--port", type=int, default=7617)
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args = parser.parse_args()
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if run_test(args.host, args.port):
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print("PASS: MSETNX atomicity")
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sys.exit(0)
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print("FAIL: MSETNX atomicity")
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sys.exit(1)
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