Source code for libcloud.common.durabledns

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

import re
from xml.etree import ElementTree as ET   # noqa

from libcloud.common.base import ConnectionUserAndKey
from libcloud.common.base import XmlResponse

# API HOST to connect

def _schema_builder(urn_nid, method, attributes):
    Return a xml schema used to do an API request.

    :param urn_nid: API urn namespace id.
    :type urn_nid: type: ``str``

    :param method: API method.
    :type method: type: ``str``

    :param attributes: List of attributes to include.
    :type attributes: ``list`` of ``str``

    rtype: :class:`Element`
    soap = ET.Element(
        {'xmlns:m': "" % method}
    urn = ET.SubElement(soap, 'urn:%s:%s' % (urn_nid, method))
    # Attributes specification
    for attribute in attributes:
        ET.SubElement(urn, 'urn:%s:%s' % (urn_nid, attribute))
    return soap

    'list_zones': {
        'urn_nid': 'listZoneswsdl',
        'method': 'listZones',
        'attributes': ['apiuser', 'apikey']
    'list_records': {
        'urn_nid': 'listRecordswsdl',
        'method': 'listRecords',
        'attributes': ['apiuser', 'apikey', 'zonename']
    'get_zone': {
        'urn_nid': 'getZonewsdl',
        'method': 'getZone',
        'attributes': ['apiuser', 'apikey', 'zonename']
    'get_record': {
        'urn_nid': 'getRecordwsdl',
        'method': 'getRecord',
        'attributes': ['apiuser', 'apikey', 'zonename', 'recordid']
    'create_zone': {
        'urn_nid': 'createZonewsdl',
        'method': 'createZone',
        'attributes': ['apiuser', 'apikey', 'zonename', 'ns', 'mbox',
                       'refresh', 'retry', 'expire', 'minimum', 'ttl',
                       'xfer', 'update_acl']
    'create_record': {
        'urn_nid': 'createRecordwsdl',
        'method': 'createRecord',
        'attributes': ['apiuser', 'apikey', 'zonename', 'name', 'type',
                       'data', 'aux', 'ttl', 'ddns_enabled']
    'update_zone': {
        'urn_nid': 'updateZonewsdl',
        'method': 'updateZone',
        'attributes': ['apiuser', 'apikey', 'zonename', 'ns', 'mbox',
                       'refresh', 'retry', 'expire', 'minimum', 'ttl',
                       'xfer', 'update_acl']
    'update_record': {
        'urn_nid': 'updateRecordwsdl',
        'method': 'updateRecord',
        'attributes': ['apiuser', 'apikey', 'zonename', 'id', 'name', 'aux',
                       'data', 'ttl', 'ddns_enabled']
    'delete_zone': {
        'urn_nid': 'deleteZonewsdl',
        'method': 'deleteZone',
        'attributes': ['apiuser', 'apikey', 'zonename']
    'delete_record': {
        'urn_nid': 'deleteRecordwsdl',
        'method': 'deleteRecord',
        'attributes': ['apiuser', 'apikey', 'zonename', 'id']

[docs]class DurableDNSException(Exception):
def __init__(self, code, message): self.code = code self.message = message self.args = (code, message) def __str__(self): return "%s %s" % (self.code, self.message) def __repr__(self): return "DurableDNSException %s %s" % (self.code, self.message)
[docs]class DurableResponse(XmlResponse):
errors = [] objects = [] def __init__(self, response, connection): super(DurableResponse, self).__init__(response=response, connection=connection) self.objects, self.errors = self.parse_body_and_error() if self.errors: raise self._make_excp(self.errors[0]) def parse_body_and_error(self): """ Used to parse body from httplib.HttpResponse object. """ objects = [] errors = [] error_dict = {} extra = {} zone_dict = {} record_dict = {} xml_obj = self.parse_body() envelop_body = xml_obj.getchildren()[0] method_resp = envelop_body.getchildren()[0] # parse the xml_obj # handle errors if 'Fault' in method_resp.tag: fault = [fault for fault in method_resp.getchildren() if fault.tag == 'faultstring'][0] error_dict['ERRORMESSAGE'] = fault.text.strip() error_dict['ERRORCODE'] = self.status errors.append(error_dict) # parsing response from listZonesResponse if 'listZonesResponse' in method_resp.tag: answer = method_resp.getchildren()[0] for element in answer: zone_dict['id'] = element.getchildren()[0].text objects.append(zone_dict) # reset the zone_dict zone_dict = {} # parse response from listRecordsResponse if 'listRecordsResponse' in method_resp.tag: answer = method_resp.getchildren()[0] for element in answer: for child in element.getchildren(): if child.tag == 'id': record_dict['id'] = child.text.strip() objects.append(record_dict) # reset the record_dict for later usage record_dict = {} # parse response from getZoneResponse if 'getZoneResponse' in method_resp.tag: for child in method_resp.getchildren(): if child.tag == 'origin': zone_dict['id'] = child.text.strip() zone_dict['domain'] = child.text.strip() elif child.tag == 'ttl': zone_dict['ttl'] = int(child.text.strip()) elif child.tag == 'retry': extra['retry'] = int(child.text.strip()) elif child.tag == 'expire': extra['expire'] = int(child.text.strip()) elif child.tag == 'minimum': extra['minimum'] = int(child.text.strip()) else: if child.text: extra[child.tag] = child.text.strip() else: extra[child.tag] = '' zone_dict['extra'] = extra objects.append(zone_dict) # parse response from getRecordResponse if 'getRecordResponse' in method_resp.tag: answer = method_resp.getchildren()[0] for child in method_resp.getchildren(): if child.tag == 'id' and child.text: record_dict['id'] = child.text.strip() elif child.tag == 'name' and child.text: record_dict['name'] = child.text.strip() elif child.tag == 'type' and child.text: record_dict['type'] = child.text.strip() elif child.tag == 'data' and child.text: record_dict['data'] = child.text.strip() elif child.tag == 'aux' and child.text: record_dict['aux'] = child.text.strip() elif child.tag == 'ttl' and child.text: record_dict['ttl'] = child.text.strip() if not record_dict: error_dict['ERRORMESSAGE'] = 'Record does not exist' error_dict['ERRORCODE'] = 404 errors.append(error_dict) objects.append(record_dict) record_dict = {} if 'createZoneResponse' in method_resp.tag: answer = method_resp.getchildren()[0] if answer.tag == 'return' and answer.text: record_dict['id'] = answer.text.strip() objects.append(record_dict) # catch Record does not exists error when deleting record if 'deleteRecordResponse' in method_resp.tag: answer = method_resp.getchildren()[0] if 'Record does not exists' in answer.text.strip(): errors.append({'ERRORMESSAGE': answer.text.strip(), 'ERRORCODE': self.status}) # parse response in createRecordResponse if 'createRecordResponse' in method_resp.tag: answer = method_resp.getchildren()[0] record_dict['id'] = answer.text.strip() objects.append(record_dict) record_dict = {} return (objects, errors) def parse_body(self): # A problem arise in the api response because there are undeclared # xml namespaces. In order to fix that at the moment, we use the # _fix_response method to clean up since we won't always have lxml # library. self._fix_response() body = super(DurableResponse, self).parse_body() return body def success(self): """ Used to determine if the request was successful. """ return len(self.errors) == 0 def _make_excp(self, error): return DurableDNSException(error['ERRORCODE'], error['ERRORMESSAGE']) def _fix_response(self): items = re.findall('<ns1:.+ xmlns:ns1="">', self.body, flags=0) for item in items: parts = item.split(' ') prefix = parts[0].replace('<', '').split(':')[1] new_item = "<" + prefix + ">" close_tag = "</" + parts[0].replace('<', '') + ">" new_close_tag = "</" + prefix + ">" self.body = self.body.replace(item, new_item) self.body = self.body.replace(close_tag, new_close_tag)
[docs]class DurableConnection(ConnectionUserAndKey): host = API_HOST responseCls = DurableResponse
[docs] def add_default_params(self, params): params['user_id'] = self.user_id params['key'] = self.key return params
[docs] def add_default_headers(self, headers): headers['Content-Type'] = 'text/xml' headers['Content-Encoding'] = 'gzip; charset=ISO-8859-1' return headers