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