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ashish |
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'''
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| 3124 |
rajveer |
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@author: rajveer
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| 155 |
ashish |
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'''
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from thrift.transport import TSocket
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from thrift.transport.TTransport import TFramedTransport
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from thrift.protocol.TBinaryProtocol import TBinaryProtocol
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| 3124 |
rajveer |
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from shop2020.config.client.ConfigClient import ConfigClient
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from shop2020.utils.Utils import log_entry
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| 155 |
ashish |
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| 3124 |
rajveer |
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class GenericClient:
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| 155 |
ashish |
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| 3124 |
rajveer |
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host = "localhost"
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port = 8080
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attemptNumber = 1
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MAX_ATTEMPTS = 3
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TOTAL_SERVICES = 2
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serviceNumber = 0
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| 155 |
ashish |
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| 3124 |
rajveer |
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def __init__(self, hostConfigKey, portConfigKey):
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self.hostConfigKey = hostConfigKey
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self.portConfigKey = hostConfigKey
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self.loadConfigParameters(hostConfigKey, portConfigKey)
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self.connectToService(1)
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| 155 |
ashish |
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rajveer |
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def loadConfigParameters(self, hostConfigKey, portConfigKey):
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try:
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self.config_client = ConfigClient()
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self.host = self.config_client.get_property(hostConfigKey)
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self.port = int(self.config_client.get_property(portConfigKey))
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except:
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log_entry(self, "error getting data from config")
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def connectToService(self, attemptNumber):
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try:
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self.openTransport()
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except:
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if attemptNumber < self.MAX_ATTEMPTS:
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self.connectToService(attemptNumber+1)
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else:
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if self.serviceNumber < self.TOTAL_SERVICES:
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self.serviceNumber += 1
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log_entry(self, "Maximum attempts have reached. Failing over to another service instance")
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self.loadConfigParameters(self.hostConfigKey + str(self.serviceNumber), self.portConfigKey + str(self.serviceNumber))
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self.connectToService(1)
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self.updateConfigParameters(self.hostConfigKey, self.portConfigKey)
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else:
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log_entry(self, "Have tried enough services, giving up....")
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raise
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def openTransport(self):
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| 155 |
ashish |
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self.transport = TSocket.TSocket(self.host, self.port)
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self.transport = TFramedTransport(self.transport)
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self.protocol = TBinaryProtocol(self.transport)
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| 3124 |
rajveer |
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self.transport.open()
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def updateConfigParameters(self, hostConfigKey, portConfigKey):
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try:
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self.config_client = ConfigClient()
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self.host = self.config_client.set_property(hostConfigKey, self.host)
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self.port = self.config_client.get_property(portConfigKey, self.port)
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except:
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log_entry(self, "error getting data from config")
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def close_connection(self):
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self.transport.close()
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