54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
#!/usr/bin/env python
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#
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# This library is free software, distributed under the terms of
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# the GNU Lesser General Public License Version 3, or any later version.
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# See the COPYING file included in this archive
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#
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# The docstrings in this module contain epytext markup; API documentation
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# may be created by processing this file with epydoc: http://epydoc.sf.net
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from lbrynet.core.utils import generate_id
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import constants
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class Message(object):
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""" Base class for messages - all "unknown" messages use this class """
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def __init__(self, rpcID, nodeID):
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if len(rpcID) != constants.rpc_id_length:
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raise ValueError("invalid rpc id: %i bytes (expected 20)" % len(rpcID))
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if len(nodeID) != constants.key_bits / 8:
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raise ValueError("invalid node id: %i bytes (expected 48)" % len(nodeID))
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self.id = rpcID
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self.nodeID = nodeID
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class RequestMessage(Message):
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""" Message containing an RPC request """
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def __init__(self, nodeID, method, methodArgs, rpcID=None):
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if rpcID is None:
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rpcID = generate_id()[:constants.rpc_id_length]
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Message.__init__(self, rpcID, nodeID)
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self.request = method
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self.args = methodArgs
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class ResponseMessage(Message):
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""" Message containing the result from a successful RPC request """
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def __init__(self, rpcID, nodeID, response):
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Message.__init__(self, rpcID, nodeID)
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self.response = response
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class ErrorMessage(ResponseMessage):
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""" Message containing the error from an unsuccessful RPC request """
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def __init__(self, rpcID, nodeID, exceptionType, errorMessage):
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ResponseMessage.__init__(self, rpcID, nodeID, errorMessage)
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if isinstance(exceptionType, type):
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self.exceptionType = '%s.%s' % (exceptionType.__module__, exceptionType.__name__)
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else:
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self.exceptionType = exceptionType
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