56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
# Copyright 2017 Canonical Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from ipaddress import ip_address
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import xml.etree.ElementTree as etree
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from charmhelpers.contrib.openstack.utils import get_host_ip
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from result import Err, Ok, Result
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__author__ = 'Chris Holcombe <chris.holcombe@canonical.com>'
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def check_return_code(tree: etree.Element) -> Result:
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"""
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Helper function to make processing xml easier. This checks
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to see if gluster returned an error code
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:param tree: xml tree
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:return: Result with Ok or Err
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"""
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return_code = 0
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err_string = ""
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for child in tree:
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if child.tag == 'opRet':
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return_code = int(child.text)
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elif child.tag == 'opErrstr':
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err_string = child.text
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if return_code != 0:
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return Err(err_string)
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return Ok()
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def resolve_to_ip(address: str) -> Result:
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"""
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Resolves an dns address to an ip address. Relies on dig
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:param address: String. Hostname to resolve to an ip address
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:return: result
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"""
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ip_addr = get_host_ip(hostname=address)
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try:
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parsed = ip_address(address=ip_addr)
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return Ok(parsed)
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except ValueError:
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return Err("failed to parse ip address: {}".format(ip_addr))
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