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Testing: IP allocation simulation - fix nondeterminism in do_something_random().

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The current code makes random choices from unsorted lists.  This
ensures the lists are sorted.

Also, make the code easier to read by doing the random selction from
lists of PNNs rather than lists of Node objects.

Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit a01244499dc3567f5aa934b1864b9bc183a6c242)
This commit is contained in:
Martin Schwenke 2010-08-02 14:24:00 +10:00
parent eac5edf322
commit ae0f339173
1 changed files with 6 additions and 4 deletions
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10
ctdb/tests/takeover/ctdb_takeover.py
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@ -193,17 +193,19 @@ class Cluster(object):
unhealthy."""
num_nodes = len(self.nodes)
healthy_nodes = [n for n in self.nodes if n.healthy]
num_healthy = len(healthy_nodes)
healthy_pnns = [i for (i,n) in enumerate(self.nodes) if n.healthy]
num_healthy = len(healthy_pnns)
if num_nodes == num_healthy:
self.unhealthy(random.randint(0, num_nodes-1))
elif num_healthy == 0:
self.healthy(random.randint(0, num_nodes-1))
elif random.randint(1, 4) == 1:
self.unhealthy(self.nodes.index(random.choice(healthy_nodes)))
self.unhealthy(random.choice(healthy_pnns))
else:
self.healthy(self.nodes.index(random.choice(list(set(self.nodes) - set(healthy_nodes)))))
all_pnns = range(num_nodes)
unhealthy_pnns = sorted(list(set(all_pnns) - set(healthy_pnns)))
self.healthy(random.choice(unhealthy_pnns))
def random_iterations(self):
i = 1