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我的節儉客戶端當前沒有連接,所以self.transport.open()
的調用應該超時,我的程序執行應該繼續,因爲它的確如此。但我想知道爲什麼超時引發異常,爲什麼堆棧跟蹤打印到控制檯,以及這是否表明存在問題。爲什麼我的控制檯顯示從try塊中引發的Thrift異常的堆棧跟蹤?
代碼:
def connect(self, url=None):
"""Attempt to connect to supervisor Thrift server"""
if conf.TESTING:
return
try:
self.url = url if url is not None else self.url
self.socket = TSocket.TSocket(self.url, constants.kSupervisorPort)
self.socket.setTimeout(1000)
self.transport = TTransport.TBufferedTransport(self.socket)
self.protocol = TBinaryProtocol.TBinaryProtocol(self.transport)
self.client = Supervisor.Client(self.protocol)
log.warning("...Im about to raise an exception from inside a try block!")
self.transport.open()
self.connected = True
log.info('[TaskStateClient] Connected at url: ' + self.url)
except Exception:
log.warning("...and now Im handling the raised exception...")
而且堆棧跟蹤:
-> Running
python app.py
werkzeug : INFO * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
root : WARNING ...Im about to raise an exception from inside a try block!
thrift.transport.TSocket: INFO Could not connect to ('192.168.1.219', 9002)
Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/thrift/transport/TSocket.py", line 104, in open
handle.connect(sockaddr)
File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 228, in meth
return getattr(self._sock,name)(*args)
timeout: timed out
thrift.transport.TSocket: ERROR Could not connect to any of [('192.168.1.219', 9002)]
root : WARNING ...and now Im handling the raised exception...
程序是否停止?你不在(某種)_Debug_模式,並且異常回溯只顯示?顯然(在讀取輸出之後)似乎是這樣的:「_root:警告...我要在try塊內引發異常!_」。 – CristiFati
程序執行不停止。回溯是在調試模式下和在調試模式下生成的,並且不會生成其他回溯(即使處理了其他異常)。該警告語句來自我 - 請參閱我的代碼的try塊中的log.warning行。感謝您的期待! –
然後,我認爲沒有問題。我從來沒有使用_thrift_,但我認爲它只是顯示異常(即使它被捕獲),因爲它阻止了它做某件事,但我確信這可以通過設置來抑制。 – CristiFati