root / ncclient / operations / util.py @ bbd4ce54
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# Copyright 2009 Shikhar Bhushan
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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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'Boilerplate ugliness'
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from ncclient import xml_ |
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from errors import OperationError, MissingCapabilityError |
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def one_of(*args): |
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'Verifies that only one of the arguments is not None'
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for i, arg in enumerate(args): |
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if arg is not None: |
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for argh in args[i+1:]: |
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if argh is not None: |
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raise OperationError('Too many parameters') |
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else:
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return
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raise OperationError('Insufficient parameters') |
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def store_or_url(wha, loc, capcheck=None): |
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node = { 'tag': wha, 'subtree': {} } |
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if '://' in loc: # e.g. http://, file://, ftp:// |
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if capcheck is not None: |
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capcheck(':url') # url schema check at some point! |
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node['subtree']['tag'] = 'url' |
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node['subtree']['text'] = loc |
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else:
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#if loc == 'candidate':
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# capcheck(':candidate')
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#elif loc == 'startup':
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# capcheck(':startup')
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#elif loc == 'running' and wha == 'target':
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# capcheck(':writable-running')
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node['subtree']['tag'] = loc |
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return node
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def build_filter(spec, capcheck=None): |
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type = None
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if isinstance(spec, tuple): |
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type, criteria = spec
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rep = {'tag': 'filter', 'attrib': {'type': type}} |
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if type == 'xpath': |
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rep['attrib']['select'] = criteria |
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elif type == 'subtree': |
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rep['subtree'] = criteria
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else:
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raise OperationError("Invalid filter type") |
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else:
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rep = xml_.validated_element(spec, ['filter', xml_.qualify('filter')], |
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attrs=[('type', xml_.qualify('type'))]) |
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if type == 'xpath' and capcheck is not None: |
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capcheck(':xpath')
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return rep
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