Revision ee4bb099 ncclient/listeners.py
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# Copyright 2009 Shikhar Bhushan
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# Copyright 2009 Shikhar Bhushan |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# limitations under the License. |
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import logging |
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import weakref |
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from weakref import WeakValueDictionary |
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import content |
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logger = logging.getLogger('ncclient.listeners')
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import content |
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session_listeners = {}
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def session_listener_factory(session): |
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try: |
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return session_listeners[session] |
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except KeyError: |
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session_listeners[session] = SessionListener() |
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return session_listeners[session] |
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class SessionListener(object): |
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'A multiton - one listener per session' |
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instances = weakref.WeakValueDictionary() |
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def __new__(cls, sid): |
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if sid in instances:# not been gc'd |
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return cls.instances[sid] |
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else: |
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inst = object.__new__(cls) |
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cls.instances[sid] = inst |
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return inst |
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def __init__(self): |
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self._id2rpc = WeakValueDictionary() |
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self._expecting_close = False |
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self._subscription = None |
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def __str__(self): |
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return 'SessionListener' |
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def set_subscription(self, id):
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def set_subscription(self, id): |
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self._subscription = id |
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def expect_close(self): |
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self._expecting_close = True |
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def register(self, id, op): |
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self._id2rpc[id] = op |
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def unregister(self, id): |
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del self._id2prc[id] |
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### Events |
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def reply(self, raw): |
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id = content.parse_message(raw) |
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if id: |
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self._id2rpc[id]._deliver(raw) |
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else: |
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self._id2rpc[self._sub_id]._notify(raw) |
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try: |
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id = content.parse_message_root(raw) |
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if id is None: |
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pass |
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elif id == 'notification': |
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self._id2rpc[self._sub_id]._notify(raw) |
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else: |
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self._id2rpc[id]._response_cb(raw) |
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except Exception as e: |
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logger.warning(e) |
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def close(self, buf): |
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pass # TODO |
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def error(self, err): |
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from ssh import SessionCloseError |
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if err is SessionCloseError: |
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logger.debug('received session close, expecting_close=%s' %
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self._expecting_close) |
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if not self._expecting_close: |
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raise err |
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class DebugListener: |
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return 'DebugListener' |
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def reply(self, raw): |
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logger.debug('reply:\n%s' % raw)
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logger.debug('DebugListener:reply:\n%s' % raw)
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def error(self, err): |
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logger.debug(err) |
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logger.debug('DebugListener:error:\n%s' % err)
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