linux线程响应慢,Python响应模块在Linux中使用多线程时不稳定
我正在尝试使用响应模块来模拟HTTP服务器，并且当调用请求为多线程时，我感觉它已损坏。
考虑以下：import json
import responses
import requests
import threading
try:
import urlparse
except ModuleNotFoundError:
import urllib.parse as urlparse
server_url = 'http://server'
headers_json = {'content-type': 'application/json'}
def init():
def endpoint(request):
id = urlparse.parse_qs(urlparse.urlparse(request.path_url).query)["id"][0]
data = {"foo": int(id)}
return 200, headers_json, json.dumps(data)
responses.add_callback(
responses.GET, server_url + '/',
callback=endpoint,
)
@responses.activate
def test():
init()
def responses_routine():
resp = requests.get(
server_url + '/?id=456',
headers=headers_json,
)
# {"foo": "456"}
print(resp.json()["foo"])
def print_routine():
print("456")
# This will print "456"
#responses_routine()
# This will print "456" after 2 seconds
#threading.Timer(2, print_routine).start()
# This will fail
threading.Timer(2, responses_routine).start()
test()
它失败并显示一个堆栈，该堆栈明确指示未进行任何响应 。 请求模块确实尝试向远程服务器发送HTTP代码。Exception in thread Thread-1:
Traceback (most recent call last):
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/connection.py", line 159, in _new_conn
(self._dns_host, self.port), self.timeout, **extra_kw)
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/util/connection.py", line 57, in create_connection
for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
File "/opt/python/python3.6.6/lib/python3.6/socket.py", line 745, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/opt/python/python3.6.6/lib/python3.6/http/client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/opt/python/python3.6.6/lib/python3.6/http/client.py", line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/opt/python/python3.6.6/lib/python3.6/http/client.py", line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/opt/python/python3.6.6/lib/python3.6/http/client.py", line 1026, in _send_output
self.send(msg)
File "/opt/python/python3.6.6/lib/python3.6/http/client.py", line 964, in send
self.connect()
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/connection.py", line 181, in connect
conn = self._new_conn()
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/connection.py", line 168, in _new_conn
self, "Failed to establish a new connection: %s" % e)
urllib3.exceptions.NewConnectionError: : Failed to establish a new connection: [Errno -2] Name or service not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/python/python3.6.6/lib/python3.6/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
_stacktrace=sys.exc_info()[2])
File "/opt/python/python3.6.6/lib/python3.6/site-packages/urllib3/util/retry.py", line 398, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='server', port=80): Max retries exceeded with url: /?id=456 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno -2] Name or service not known',))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/python/python3.6.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/opt/python/python3.6.6/lib/python3.6/threading.py", line 1182, in run
self.function(*self.args, **self.kwargs)
File "tmp.py", line 35, in responses_routine
headers=headers_json,
File "/opt/python/python3.6.6/lib/python3.6/site-packages/requests/api.py", line 116, in post
return request('post', url, data=data, json=json, **kwargs)
File "/opt/python/python3.6.6/lib/python3.6/site-packages/requests/api.py", line 60, in request
return session.request(method=method, url=url, **kwargs)
File "/opt/python/python3.6.6/lib/python3.6/site-packages/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/opt/python/python3.6.6/lib/python3.6/site-packages/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/opt/python/python3.6.6/lib/python3.6/site-packages/requests/adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='server', port=80): Max retries exceeded with url: /?id=456 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno -2] Name or service not known',))
它在Redhat 6.6上失败。 我正在使用带有请求2.22和响应0.10.6的Python 3.6.6(它在2.7中也失败，具有类似的堆栈)。
就像当主线程退出时，所有响应的 “句柄”都丢失了……有任何线索吗？