2 from sfa.util.faults import InvalidRSpec, UnsupportedRSpecVersion
3 from sfa.rspecs.version import RSpecVersion
4 from sfa.util.sfalogging import logger
12 return "<VersionManager with {} flavours: [{}]>"\
13 .format(len(self.versions),
14 ", ".join( [ str(x) for x in self.versions ]))
16 def load_versions(self):
17 path = os.path.dirname(os.path.abspath( __file__ ))
18 versions_path = path + os.sep + 'versions'
19 versions_module_path = 'sfa.rspecs.versions'
20 valid_module = lambda x: os.path.isfile(os.sep.join([versions_path, x])) \
21 and x.endswith('.py') and x != '__init__.py'
22 files = [f for f in os.listdir(versions_path) if valid_module(f)]
23 for filename in files:
24 basename = filename.split('.')[0]
25 module_path = versions_module_path +'.'+basename
26 module = __import__(module_path, fromlist=module_path)
27 for attr_name in dir(module):
28 attr = getattr(module, attr_name)
29 if hasattr(attr, 'version') and hasattr(attr, 'enabled') and attr.enabled == True:
30 self.versions.append(attr())
32 def _get_version(self, type, version_num=None, content_type=None):
34 for version in self.versions:
35 if type is None or type.lower() == version.type.lower():
36 if version_num is None or str(float(version_num)) == str(float(version.version)):
37 if content_type is None or content_type.lower() == version.content_type.lower() \
38 or version.content_type == '*':
40 ### sounds like we should be glad with the first match, not the last one
43 raise UnsupportedRSpecVersion("[%s %s %s] is not suported here"% (type, version_num, content_type))
46 def get_version(self, version=None):
48 if isinstance(version, dict):
49 retval = self._get_version(version.get('type'), version.get('version'), version.get('content_type'))
50 elif isinstance(version, basestring):
51 version_parts = version.split(' ')
52 num_parts = len(version_parts)
53 type = version_parts[0]
57 version_num = version_parts[1]
59 content_type = version_parts[2]
60 retval = self._get_version(type, version_num, content_type)
61 elif isinstance(version, RSpecVersion):
64 retval = self.versions[0]
66 raise UnsupportedRSpecVersion("No such version: %s "% str(version))
70 def get_version_by_schema(self, schema):
72 for version in self.versions:
73 if schema == version.schema:
76 raise InvalidRSpec("Unkwnown RSpec schema: %s" % schema)
79 def show_by_string(self, string):
81 print self.get_version(string)
82 except Exception as e:
85 def show_by_schema(self, string):
87 print self.get_version_by_schema(string)
88 except Exception as e:
91 if __name__ == '__main__':
92 manager = VersionManager()
94 manager.show_by_string('sfa 1')
95 manager.show_by_string('protogeni 2')
96 manager.show_by_string('protogeni 2 advertisement')
97 manager.show_by_schema('http://www.protogeni.net/resources/rspec/2/ad.xsd')
98 manager.show_by_schema('http://sorch.netmode.ntua.gr/ws/RSpec/ad.xsd')