diff options
| author | Johan Lundberg <lundberg@nordu.net> | 2015-04-02 10:43:33 +0200 |
|---|---|---|
| committer | Johan Lundberg <lundberg@nordu.net> | 2015-04-02 10:43:33 +0200 |
| commit | bd611ac59f7c4db885a2f8631ef0bcdcd1901ca0 (patch) | |
| tree | e60f5333a7699cd021b33c7f5292af55b774001b /definate/generator_factory.py | |
Diffstat (limited to 'definate/generator_factory.py')
| -rwxr-xr-x | definate/generator_factory.py | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/definate/generator_factory.py b/definate/generator_factory.py new file mode 100755 index 0000000..c887cc1 --- /dev/null +++ b/definate/generator_factory.py @@ -0,0 +1,57 @@ +#!/usr/bin/python +# +# Copyright 2012 Google Inc. All Rights Reserved. +# +# 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. + +"""Functionality to allow easily retrieving the right definition generator.""" + +__author__ = 'msu@google.com (Martin Suess)' + + +import dns_generator + + +class Error(Exception): + """Base error class.""" + + +class GeneratorIdentificationError(Error): + """Exception to use when GeneratorFactory fails to identify the Generator.""" + + +class GeneratorFactory(object): + """Functionality to get a definition generator easily based on its name.""" + + def __init__(self): + """Initializer.""" + self._generators = { + 'DnsGenerator': dns_generator.DnsGenerator, + } + + def GetGenerator(self, identifier): + """Returns a specific generator instance based on the identifier. + + Args: + identifier: String identifier for the generator to get. + + Raises: + GeneratorIdentificationError: If the generator cannot be identified. + + Returns: + Generator instance based on the identifier passed in. + """ + if identifier not in self._generators: + raise GeneratorIdentificationError( + 'Generator \'%s\' could not be identified.' % identifier) + return self._generators[identifier]() |
