62 lines
2.1 KiB
Python
62 lines
2.1 KiB
Python
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#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. 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,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#
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"""
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This module loads protocol metadata into python objects. It provides
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access to spec metadata via a python object model, and can also
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dynamically creating python methods, classes, and modules based on the
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spec metadata. All the generated methods have proper signatures and
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doc strings based on the spec metadata so the python help system can
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be used to browse the spec documentation. The generated methods all
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dispatch to the self.invoke(meth, args) callback of the containing
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class so that the generated code can be reused in a variety of
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situations.
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"""
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import os, mllib, spec08
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def default():
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try:
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amqp_spec = os.environ["AMQP_SPEC"]
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return amqp_spec
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except KeyError:
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try:
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from qpid_config import amqp_spec
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return amqp_spec
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except ImportError:
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raise Exception("unable to locate the amqp specification, please set "
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"the AMQP_SPEC environment variable or supply "
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"qpid_config.py on the PYTHONPATH")
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def load(specfile, *errata):
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for name in (specfile,) + errata:
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if not os.path.exists(name):
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raise IOError("No such file or directory: '%s'" % name)
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doc = mllib.xml_parse(specfile)
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major = doc["amqp/@major"]
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minor = doc["amqp/@minor"]
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if major == "0" and minor == "10":
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return None
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else:
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return spec08.load(specfile, *errata)
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SPEC = load(default())
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