def _get_system_ssh_version():
"""Return version of ssh available system-wide
"""
try:
out, err = _runner.run('ssh -V'.split(),
expect_fail=True, expect_stderr=True)
# apparently spits out to err but I wouldn't trust it blindly
if err.startswith('OpenSSH'):
out = err
assert out.startswith('OpenSSH') # that is the only one we care about atm
return out.split(' ', 1)[0].rstrip(',.').split('_')[1]
except CommandError as exc:
lgr.debug("Could not determine version of ssh available: %s", exc_str(exc))
return None
def __getitem__(self, module):
# when ran straight in its source code -- fails to discover nipy's version.. TODO
#if module == 'nipy':
# import pdb; pdb.set_trace()
if not isinstance(module, str):
modname = module.__name__
else:
modname = module
module = None
# Early returns None so we do not store prev result for them
# and allow users to install things at run time, so later check
# doesn't pick it up from the _versions
if modname not in self._versions:
version = None # by default -- not present
if modname in self.CUSTOM:
try:
version = self.CUSTOM[modname]()
version = self._deduce_version(version)
except Exception as exc:
lgr.debug("Failed to deduce version of %s due to %s" %
(modname, exc_str(exc)))
return None
else:
if module is None:
if modname not in sys.modules:
try:
module = __import__(modname)
except ImportError:
lgr.debug("Module %s seems to be not present" %
modname)
return None
except Exception as exc:
lgr.warning("Failed to import module %s due to %s",
modname, exc_str(exc))
return None
else:
module = sys.modules[modname]
if module:
version = self._deduce_version(module)
self._versions[modname] = version
return self._versions.get(modname, self.UNKNOWN)