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[PSUPCLPL-8487] Prevent Kubemarine from getting stuck (#93)
* PSUPCLPL-8487 Prevent Kubemarine from getting stuck * Updated error codes support * Fix review comments * Update Troubleshooting.md Co-authored-by: shmo1218 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| # Copyright 2021-2022 NetCracker Technology Corporation | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| import sys | ||
| from traceback import print_exc | ||
| from typing import Union | ||
|
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| from fabric.exceptions import GroupException | ||
| from concurrent.futures import TimeoutError | ||
|
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| KME_DICTIONARY = { | ||
| "KME0000": { | ||
| "name": "Test exception" | ||
| }, | ||
| "KME0003": { | ||
| "instance": TimeoutError, | ||
| "name": "Action took too long to complete and timed out" | ||
| }, | ||
| "KME0004": { | ||
| "name": "There are no workers defined in the cluster scheme" | ||
| }, | ||
| "KME0005": { | ||
| "name": "{hostname} is not a sudoer" | ||
| } | ||
| } | ||
|
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|
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| # TODO: support for more complex KME00XX objects with custom constructors | ||
| class KME(RuntimeError): | ||
| def __init__(self, code, **kwargs): | ||
| self.code = code | ||
| self.kme = KME_DICTIONARY.get(self.code) | ||
| if self.kme is None: | ||
| raise ValueError('An error was raised with an unknown error code') | ||
| self.message = self.kme.get('name').format(**kwargs) | ||
| super().__init__(self.message) | ||
|
|
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| def __str__(self): | ||
| return self.code + ": " + self.message | ||
|
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| def pretty_print_error(reason: Union[str, Exception], log=None) -> None: | ||
| """ | ||
| Parses the passed error and nicely displays its name and structure depending on what was passed. | ||
| The method outputs to stdout by default, but will use the logger if one is specified. | ||
| :param reason: an object containing an exception or other error (must be able to be represented | ||
| as a string) | ||
| :param log: logger object, if you need to write a log there | ||
| :return: None | ||
| """ | ||
|
|
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| if reason == "": | ||
| return | ||
|
|
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| if isinstance(reason, KME): | ||
| if log: | ||
| log.critical(reason) | ||
| else: | ||
| sys.stderr.write(str(reason)) | ||
|
|
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| return | ||
|
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| for dictionary_code, dictionary_kme in KME_DICTIONARY.items(): | ||
| if dictionary_kme.get('instance') and isinstance(reason, type(dictionary_kme['instance'])): | ||
| kme = KME(dictionary_code) | ||
|
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| if log: | ||
| log.critical(kme) | ||
| else: | ||
| sys.stderr.write(str(kme)) | ||
|
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| return | ||
|
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| if isinstance(reason, GroupException): | ||
| description = "KME0002: Remote group exception" | ||
|
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| if log: | ||
| log.critical(description) | ||
| else: | ||
| sys.stderr.write(f"{description}\n") | ||
|
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| for connection, result in reason.result.items(): | ||
| if log: | ||
| log.critical("%s:" % connection.host) | ||
| else: | ||
| sys.stderr.write("\n%s:" % connection.host) | ||
|
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| found_dictionary_code = None | ||
| for dictionary_code, dictionary_kme in KME_DICTIONARY.items(): | ||
| if dictionary_kme.get('instance') \ | ||
| and isinstance(result, dictionary_kme['instance']): | ||
| found_dictionary_code = dictionary_code | ||
| break | ||
|
|
||
| if found_dictionary_code: | ||
| kme = KME(found_dictionary_code) | ||
| if log: | ||
| log.critical("\t" + str(kme)) | ||
| else: | ||
| sys.stderr.write("\n\t%s\n" % str(kme)) | ||
| else: | ||
| if log: | ||
| log.critical("\t" + str(result).replace("\n", "\n\t")) | ||
| else: | ||
| sys.stderr.write("\n\t%s\n" % str(result).replace("\n", "\n\t")) | ||
|
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| return | ||
|
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| if isinstance(reason, Exception): | ||
| if log: | ||
| log.critical('KME0001: Unexpected exception', exc_info=True) | ||
| else: | ||
| sys.stderr.write("KME0001: Unexpected exception\n\n") | ||
| print_exc() | ||
| else: | ||
| if log: | ||
| log.critical(reason) | ||
| else: | ||
| sys.stderr.write(reason + "\n") |
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