145 lines
4.2 KiB
Python
145 lines
4.2 KiB
Python
# Copyright 2014 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from functools import wraps
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import json
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from keystoneclient.exceptions import Unauthorized
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import requests
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import sys
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def exit_with_error(message):
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"""exit_with_error - writes message to stderr and exits with exit code 1.
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"""
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sys.stderr.write(message + "\n")
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exit(1)
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class FuelClientException(Exception):
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"""Base Exception for Fuel-Client
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All child classes must be instantiated before raising.
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"""
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def __init__(self, *args, **kwargs):
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super(FuelClientException, self).__init__(*args, **kwargs)
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self.message = args[0]
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class BadDataException(FuelClientException):
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"""Should be raised when user provides corrupted data."""
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class WrongEnvironmentError(FuelClientException):
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"""Raised when particular action is not supported on environment."""
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class ServerDataException(FuelClientException):
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"""ServerDataException - must be raised when
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data returned from server cannot be processed by Fuel-Client methods.
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"""
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class DeployProgressError(FuelClientException):
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"""DeployProgressError - must be raised when
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deployment process interrupted on server.
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"""
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class ArgumentException(FuelClientException):
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"""ArgumentException - must be raised when
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incorrect arguments inputted through argparse or some function.
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"""
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class ActionException(FuelClientException):
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"""ActionException - must be raised when
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though arguments inputted to action are correct but they contradict
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to logic in action.
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"""
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class ParserException(FuelClientException):
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"""ParserException - must be raised when
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some problem occurred in process of argument parsing,
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in argparse extension or in Fuel-Client Parser submodule.
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"""
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class ProfilingError(FuelClientException):
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"""Indicates errors and other issues related to performance profiling."""
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class SettingsException(FuelClientException):
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"""Indicates errors or unexpected behaviour in processing settings."""
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class ExecutedErrorNonZeroExitCode(FuelClientException):
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"""Subshell command returned non-zero exit code."""
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class LabelEmptyKeyError(BadDataException):
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"""Should be raised when user provides labels with empty key."""
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class InvalidDirectoryException(FuelClientException):
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pass
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class InvalidFileException(FuelClientException):
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pass
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class EnvironmentException(Exception):
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pass
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def exceptions_decorator(func):
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"""Handles HTTP errors and expected exceptions that may occur
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in methods of APIClient class
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"""
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@wraps(func)
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def wrapper(*args, **kwargs):
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try:
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return func(*args, **kwargs)
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# when server returns to us bad request check that
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# and print meaningful reason
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except requests.HTTPError as exc:
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exit_with_error("{0} ({1})".format(exc, get_error_body(exc)))
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except requests.ConnectionError:
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exit_with_error("""
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Can't connect to Nailgun server!
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Please modify "SERVER_ADDRESS" and "LISTEN_PORT"
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in the file /etc/fuel/client/config.yaml""")
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except Unauthorized:
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exit_with_error("""
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Unauthorized: need authentication!
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Please provide user and password via client
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fuel --user=user --password=pass [action]
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or modify "KEYSTONE_USER" and "KEYSTONE_PASS" in
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/etc/fuel/client/config.yaml""")
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except FuelClientException as exc:
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exit_with_error(exc.message)
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return wrapper
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def get_error_body(error):
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try:
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error_body = json.loads(error.response.text)['message']
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except (ValueError, TypeError, KeyError):
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error_body = error.response.text
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return error_body
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