time.sleep挂起

Question

这是一个奇怪的回归，我只能在更强大的生产机器上复制。

def test_foo(self): 
    res = self._run_job(....) 
    self.assertTrue("Hello Input!" in res.json()["stdout"], res.text) 
    ......... 

def _run_job(self, cbid, auth, d):  
    ......... 
    while True: 
     res = requests.get(URL+"/status/"+status_id, auth=auth) <--- hangs here 
     if res.json()["status"] != "Running": 
      break 
     else: 
      time.sleep(2) 
    .......... 

我必须打破的过程，这是回溯：

Traceback (most recent call last): 
    File "test_full.py", line 231, in <module> 
    unittest.main() 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/main.py", line 98, in __init__ 
    self.runTests() 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/main.py", line 232, in runTests 
    self.result = testRunner.run(self.test) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/runner.py", line 162, in run 
    test(result) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/suite.py", line 64, in __call__ 
    return self.run(*args, **kwds) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/suite.py", line 84, in run 
    self._wrapped_run(result) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/suite.py", line 114, in _wrapped_run 
    test._wrapped_run(result, debug) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/suite.py", line 116, in _wrapped_run 
    test(result) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/case.py", line 398, in __call__ 
    return self.run(*args, **kwds) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/unittest2/case.py", line 340, in run 
    testMethod() 
    File "test_full.py", line 59, in test_session 
    "cmd": "python helloworld.py" 
    File "test_full.py", line 129, in _run_job 
    time.sleep(2) 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/gevent/hub.py", line 79, in sleep 
    switch_result = get_hub().switch() 
    File "/opt/graphyte/vens/gcs/local/lib/python2.7/site-packages/gevent/hub.py", line 164, in switch 
    return greenlet.switch(self) 
KeyboardInterrupt 
Exception KeyError: KeyError(155453036,) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored 

为什么gevent参与？这是一项功能测试。它只通过requests库发出HTTP请求，所以也许switch指的是requests。

但作为一个简单的循环，这怎么会失败呢？

Answer 1

您在GEVENT猴子修补？

它可能会切换网络请求，并且由于某种原因永远无法恢复。我现在说停止猴子补丁，并把它放在你需要它的地方。

这可能是因为现在的请求是异步的，它立即返回，然后睡觉（异步再次）和请求，并冲洗/重复...

Answer 2

为什么gevent涉及？

gevent图书馆猴子 - 修补一些标准模块，使他们合作。替换time.sleepgevent.sleep是其中的一个变化。

http://www.gevent.org/gevent.monkey.html#gevent.monkey.patch_time