Unable to catch exceptions thrown during registering process
Closed this issue · 2 comments
dr4hcu5-jan commented
Hi there,
I currently am trying to dectect if the initial connection to the Eureka Server was successful. I'm currently using the exceptions thrown during the process: socket.timeout. urllib.error.URLError, py_eureka_client.eureka_client.EurekaServerConnectionException with the following code
try:
ec.start()
ec.status_update("UP")
except (socket.timeout, urllib.error.URLError, py_eureka_client.eureka_client.EurekaServerConnectionException):
logging.warning("The connection to the Eureka Host could not be opened")
But the Exceptions are not catched and the eureka client prints its own error messages and therefore not letting me inform the user or other depending services.
Have a nice weekend.
Traceback
[2021-05-30 13:05:23]-[eureka_client]-[line:1131] -WARNING: Eureka server [http://192.168.178.74:8761/eureka] is down, use next url to try.
Traceback (most recent call last):
File "C:\Program Files\Python39\lib\urllib\request.py", line 1346, in do_open
h.request(req.get_method(), req.selector, req.data, headers,
File "C:\Program Files\Python39\lib\http\client.py", line 1253, in request
self._send_request(method, url, body, headers, encode_chunked)
File "C:\Program Files\Python39\lib\http\client.py", line 1299, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "C:\Program Files\Python39\lib\http\client.py", line 1248, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "C:\Program Files\Python39\lib\http\client.py", line 1008, in _send_output
self.send(msg)
File "C:\Program Files\Python39\lib\http\client.py", line 948, in send
self.connect()
File "C:\Program Files\Python39\lib\http\client.py", line 919, in connect
self.sock = self._create_connection(
File "C:\Program Files\Python39\lib\socket.py", line 843, in create_connection
raise err
File "C:\Program Files\Python39\lib\socket.py", line 831, in create_connection
sock.connect(sa)
socket.timeout: timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1129, in __try_eureka_servers_in_list
fun(url)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1268, in do_pull
self.__applications = get_applications(url, self.__remote_regions)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 404, in get_applications
return _get_applications_(f"{_format_url(eureka_server)}apps/", regions)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 419, in _get_applications_
txt = http_client.load(_url, timeout=_DEFAULT_TIME_OUT)[0]
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\http_client.py", line 146, in load
res = http_cli.urlopen()
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\http_client.py", line 111, in urlopen
return urllib.request.urlopen(self.request, data=self.data, timeout=self.timeout,
File "C:\Program Files\Python39\lib\urllib\request.py", line 214, in urlopen
return opener.open(url, data, timeout)
File "C:\Program Files\Python39\lib\urllib\request.py", line 517, in open
response = self._open(req, data)
File "C:\Program Files\Python39\lib\urllib\request.py", line 534, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
File "C:\Program Files\Python39\lib\urllib\request.py", line 494, in _call_chain
result = func(*args)
File "C:\Program Files\Python39\lib\urllib\request.py", line 1375, in http_open
return self.do_open(http.client.HTTPConnection, req)
File "C:\Program Files\Python39\lib\urllib\request.py", line 1349, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error timed out>
[2021-05-30 13:05:23]-[eureka_client]-[line:1273] -WARNING: pull full registry from eureka server error!
Traceback (most recent call last):
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1115, in __try_all_eureka_servers
self.__try_eureka_server_in_zone(fun)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1090, in __try_eureka_server_in_zone
self.__try_eureka_servers_in_list(fun, self.__eureka_server_conf.servers_in_zone, self.zone)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1140, in __try_eureka_servers_in_list
raise EurekaServerConnectionException(f"All eureka servers in zone[{_zone}] are down!")
py_eureka_client.eureka_client.EurekaServerConnectionException: <urlopen error All eureka servers in zone[default] are down!>
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1271, in __pull_full_registry
self.__connect_to_eureka_server(do_pull)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1149, in __connect_to_eureka_server
self.__try_all_eureka_servers(fun)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1117, in __try_all_eureka_servers
self.__try_eureka_server_not_in_zone(fun)
File "D:\Arbeit\Repositories\arsu-prognosis-rest\venv\lib\site-packages\py_eureka_client\eureka_client.py", line 1100, in __try_eureka_server_not_in_zone
raise EurekaServerConnectionException("All eureka servers in all zone are down!")
py_eureka_client.eureka_client.EurekaServerConnectionException: <urlopen error All eureka servers in all zone are down!>
keijack commented
The exceptions are caught and log for the purpose to do the connection retry. However, I add a on_error callback when initializing the eureka client. please check
def on_err(err_type: str, exception: Exception):
if err_type == eureka_client.ERROR_REGISTER:
eureka_client.stop()
eureka_client.init(...,
on_error=on_err
....)You should update to version 0.10.0 to use this feature.
keijack commented
I close this, if you have any problem, please re-open it.