Module locking
source code
Module implementing the Ganeti locking code.
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_EXCLUSIVE_TEXT = "exclusive"
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_SHARED_TEXT = "shared"
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_DELETED_TEXT = "deleted"
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_DEFAULT_PRIORITY = 0
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ALL_SET = None
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LEVEL_CLUSTER = 0
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LEVEL_INSTANCE = 1
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LEVEL_NODEGROUP = 2
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LEVEL_NODE = 3
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LEVELS = [LEVEL_CLUSTER, LEVEL_INSTANCE, LEVEL_NODEGROUP, LEVE...
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LEVELS_MOD = [LEVEL_NODE, LEVEL_NODEGROUP, LEVEL_INSTANCE]
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LEVEL_NAMES = {LEVEL_CLUSTER: "cluster", LEVEL_INSTANCE: "inst...
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BGL = 'BGL'
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Imports:
os,
select,
threading,
errno,
weakref,
logging,
heapq,
operator,
itertools,
errors,
utils,
compat,
query
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Shared Synchronization decorator.
Calls the function holding the given lock, either in exclusive or
shared mode. It requires the passed lock to be a SharedLock (or support
its semantics).
- Parameters:
mylock (lockable object or string) - lock to acquire or class member name of the lock to acquire
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Sorting key function.
Sort by name, then by incoming order.
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LEVELS
- Value:
[LEVEL_CLUSTER, LEVEL_INSTANCE, LEVEL_NODEGROUP, LEVEL_NODE]
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LEVEL_NAMES
- Value:
{LEVEL_CLUSTER: "cluster", LEVEL_INSTANCE: "instance", LEVEL_NODEGROUP
: "nodegroup", LEVEL_NODE: "node",}
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