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        "author": "Christian Theune",
        "author_email": "ct@gocept.com",
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        "description": "Using the lockd API\n===================\n\nlockd provides a light-weight implementation of a locking mechanism for\nlong-running resources by maintaining lock files in a given directory.\n\n>>> import tempfile\n>>> lockdir = tempfile.mkdtemp()\n>>> from gocept.lockd.lockd import Lockd\n>>> daemon = Lockd(lockdir)\n\nResources are identified by a string and clients performing the lock are\nidentified by another string:\n\n>>> daemon.lock('resource1', 'client1')\n\nOnce a resource is locked, it can not be locked again:\n\n>>> daemon.lock('resource1', 'client2')\nTraceback (most recent call last):\nException: Resource already locked by 'client1'\n\nHowever, other resources can be locked in parallel:\n\n>>> daemon.lock('resource2', 'client2')\n\nClients, other than the client who locked a resource, can not unlock it:\n\n>>> daemon.unlock('resource1', 'client2')\nTraceback (most recent call last):\nException: Resource locked by 'client1' cannot be unlocked by 'client2'\n\nThe client, who locked the resource, can unlock it again:\n\n>>> daemon.unlock('resource1', 'client1')\n\nOnce unlocked, it can not be unlocked a second time:\n\n>>> daemon.unlock('resource1', 'client1')\nTraceback (most recent call last):\nException: Resource not locked\n\n\nIMPORTANT security note\n=======================\n\nResource identification and client authorization are out of scope for\nlockd. It should only be used and exposed within a trusted environment.\n\n\nCleanup:\n\n>>> import shutil\n>>> shutil.rmtree(lockdir)",
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        "summary": "A simple XML-RPC-based lock daemon to support fencing.",
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