class Collections:
"""Represents interface for manipulating collections (directories)"""
def __init__(self,
host = 'gangamd.cern.ch',
port = 8822,
login = '******',
password = '',
keepalive = False,
reqSSL = True,
**kwds):
self._client = MDClient(host = host,
port = port,
login = login,
password = password,
keepalive = keepalive)
if reqSSL:
fn = getGridProxyPath()
key = kwds.get('key')
if not key:
key = fn
cert = kwds.get('cert')
if not cert:
cert = fn
self._client.requireSSL(key, cert)
self._client.connect()
#-----------------------------------------------------------------------
def createDir(self, dir):
"""Creates the directory dir if it does not yet exist but parent dir
already exist"""
self._client.createDir(dir)
#-----------------------------------------------------------------------
def listDir(self, dir):
"""Returns names of all subdirectories in the directory dir"""
res = []
self._client.listEntries(dir)
while not self._client.eot():
d, t = self._client.getEntry()
if DEBUG:
print d, t[0]
if t[0] == 'collection':
res.append(d)
return res
#-----------------------------------------------------------------------
def statDir(self, dir):
"""Returns owner and owner-permissions for the directory dir"""
res = []
cmd = 'stat ' + dir
self._client.execute(cmd)
while not self._client.eot():
row = self._client.fetchRow()
if DEBUG:
print row
res.append(row)
return res
#-----------------------------------------------------------------------
def removeDir(self, dir):
"""Removes all directories matching path. Directories are only deleted
if they are empty and they have no attributes defined"""
self._client.removeDir(dir)
#-----------------------------------------------------------------------
def pwd(self):
"""Returns the current directory"""
return self._client.pwd()
#-----------------------------------------------------------------------
def cd(self, dir):
"""Changes the current directory to the given directory"""
self._client.cd(dir)
#-----------------------------------------------------------------------
def chown(self, dir, new_owner):
"""Changes the owner of the directory"""
cmd = 'chown ' + dir + ' ' + new_owner
self._client.execute(cmd)
#-----------------------------------------------------------------------
def chmod(self, dir, new_permissions):
"""Changes owner permidssions for the directory.
The format of new_permissions is rwx, where "-" signs can be
substituted for the letters if certain priviledges have to be
ommitted"""
cmd = 'chmod ' + dir + ' ' + new_permissions
self._client.execute(cmd)
#-----------------------------------------------------------------------
def aclAdd(self, dir, group, rights):
"""Adds group rights to the dir ACL.
The format of the group user:groupname.
The format of rights is rwx"""
cmd = 'acl_add ' + dir + ' ' + group + ' ' + rights
self._client.execute(cmd)
#-----------------------------------------------------------------------
def aclRemove(self, dir, group):
"""Removes group from the dir ACL.
The format of the group user:groupname"""
cmd = 'acl_remove ' + dir + ' ' + group
self._client.execute(cmd)
#-----------------------------------------------------------------------
def aclShow(self, dir):
"""Shows the dir ACL"""
res = []
cmd = 'acl_show ' + dir
self._client.execute(cmd)
while not self._client.eot():
row = self._client.fetchRow()
if DEBUG:
print row
res.append(row.split(' '))
return res
