2 from sfa.util.faults import InvalidRSpec, UnsupportedRSpecVersion
3 from sfa.rspecs.baseversion import BaseVersion
4 from sfa.util.sfalogging import logger
11 def load_versions(self):
12 path = os.path.dirname(os.path.abspath( __file__ ))
13 versions_path = path + os.sep + 'versions'
14 versions_module_path = 'sfa.rspecs.versions'
15 valid_module = lambda x: os.path.isfile(os.sep.join([versions_path, x])) \
16 and not x.endswith('.pyc') and x not in ['__init__.py']
17 files = [f for f in os.listdir(versions_path) if valid_module(f)]
18 for filename in files:
19 basename = filename.split('.')[0]
20 module_path = versions_module_path +'.'+basename
21 module = __import__(module_path, fromlist=module_path)
22 for attr_name in dir(module):
23 attr = getattr(module, attr_name)
24 if hasattr(attr, 'version') and hasattr(attr, 'enabled') and attr.enabled == True:
25 self.versions.append(attr())
27 def _get_version(self, type, version_num=None, content_type=None):
29 for version in self.versions:
30 if type is None or type.lower() == version.type.lower():
31 if version_num is None or str(version_num) == version.version:
32 if content_type is None or content_type.lower() == version.content_type.lower() \
33 or version.content_type == '*':
36 raise UnvalidRSpecVersion("%s %s is not suported here"% (type, version_num, content_type))
39 def get_version(self, version=None):
41 if isinstance(version, dict):
42 retval = self._get_version(version.get('type'), version.get('version'), version.get('content_type'))
43 elif isinstance(version, basestring):
44 version_parts = version.split(' ')
45 num_parts = len(version_parts)
46 type = version_parts[0]
50 version_num = version_parts[1]
52 content_type = version_parts[2]
53 retval = self._get_version(type, version_num, content_type)
54 elif isinstance(version, BaseVersion):
57 raise InvalidRSpecVersion("No such version: %s "% str(version))
61 def get_version_by_schema(self, schema):
63 for version in self.versions:
64 if schema == version.schema:
67 raise InvalidRSpec("Unkwnown RSpec schema: %s" % schema)
70 if __name__ == '__main__':
73 print v.get_version('sfa 1')
74 print v.get_version('protogeni 2')
75 print v.get_version('protogeni 2 advertisement')
76 print v.get_version_by_schema('http://www.protogeni.net/resources/rspec/2/ad.xsd')