83 lines
2.3 KiB
Python
83 lines
2.3 KiB
Python
from uuid import uuid4
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try:
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from .libs import umsgpack
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from .libs import zmq
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except:
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# Server import
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from libs import umsgpack
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from libs import zmq
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class RCFMessage(object):
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"""
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Message is formatted on wire as 2 frames:
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frame 0: key (0MQ string) // property path
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frame 1: id (0MQ string) // property path
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frame 2: mtype (0MQ string) // property path
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frame 3: body (blob) // Could be any data
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"""
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key = None # key (string)
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id = None # User (string)
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mtype = None # data mtype (string)
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body = None # data blob
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uuid = None
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def __init__(self, key=None, uuid=None, id=None, mtype=None, body=None):
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if uuid is None:
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uuid = uuid4().bytes
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self.key = key
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self.uuid = uuid
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self.mtype = mtype
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self.body = body
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self.id = id
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def apply(self):
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pass
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def store(self, dikt):
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"""Store me in a dict if I have anything to store"""
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# this currently erasing old value
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if self.key is not None:
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dikt[self.key] = self
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# elif self.key in dikt:
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# del dikt[self.key]
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def send(self, socket):
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"""Send key-value message to socket; any empty frames are sent as such."""
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key = ''.encode() if self.key is None else self.key.encode()
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body = ''.encode() if self.body is None else umsgpack.packb(self.body)
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id = ''.encode() if self.id is None else self.id
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try:
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socket.send_multipart([key, id, body])
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except:
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print("Fail to send {} {}".format(key, id))
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@classmethod
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def recv(cls, socket):
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"""Reads key-value message from socket, returns new kvmsg instance."""
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key, id, body = socket.recv_multipart(zmq.DONTWAIT)
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key = key.decode() if key else None
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id = id if id else None
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body = umsgpack.unpackb(body) if body else None
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return cls(key=key, id=id, body=body)
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def dump(self):
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if self.body is None:
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size = 0
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data = 'NULL'
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else:
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size = len(self.body)
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data = repr(self.body)
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print("[key:{key}][size:{size}][mtype:{mtype}] {data}".format(
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key=self.key,
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size=size,
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mtype=self.mtype,
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data=data,
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))
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