mirror of https://github.com/apache/activemq.git
77 lines
2.0 KiB
Python
77 lines
2.0 KiB
Python
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"""
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Module Consumer
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"""
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class Consumer(object):
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"""
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This class represents an ActiveMQ Consumer.
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Each consumer is identified by its long id.
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However each consumer also has a short id (an integer) to identify it more easily.
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"""
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nConsumers = 0
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consumerIdList = []
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consumers = {}
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def __init__(self, longId):
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"""
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Constructor
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"""
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self.longId = longId
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self.shortId = Consumer.nConsumers
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self.connectionId, sessionId, value = longId.rsplit(':', 2)
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self.sessionId = int(sessionId)
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self.value = int(value)
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Consumer.consumers[longId] = self
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Consumer.consumerIdList.append(self.longId)
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Consumer.nConsumers += 1
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@classmethod
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def clearData(cls):
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"""
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Deletes all information read about Consumers.
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Returns nothing.
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"""
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cls.consumers.clear()
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cls.nConsumers = 0
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del cls.consumerIdList[:]
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@classmethod
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def getConsumerByLongId(cls, longId):
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"""
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Returns a consumer given its long id.
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If there is no consumer with this long id yet, it will be created.
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"""
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if longId not in cls.consumers:
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cls.consumers[longId] = Consumer(longId)
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return cls.consumers[longId]
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@classmethod
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def shortIdToLongId(cls, shortId):
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"""
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Transforms a consumer's short id to a long id.
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Returns a long id.
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Throws an IndexError if the short id does not exist.
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"""
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return cls.consumerIdList[shortId]
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@classmethod
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def longIdToShortId(cls, longId):
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"""
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Transforms a consumer's long id to a short id.
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Returns a long id.
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Throws an KeyError if the long id does not exist.
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"""
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return cls.consumers[longId].shortId
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