def connect(uri=None, user="", password=""):
"""
Method:
connect(uri=None, user="", password="")
Description:
Open a CDMS database connection.
Arguments:
uri: Universal Resource Identifier. If unspecified, defaults to the environment variable CDMSROOT.
user: user id
password: password
Returns:
Database instance.
Example:
db = cdms.connect("ldap://dbhost.llnl.gov/database=CDMS,ou=PCMDI,o=LLNL,c=US")
"""
if uri is None:
try:
uri = os.environ['CDMSROOT']
except KeyError:
raise CDMSError, ConnectError + '%s\nSet environment variable CDMSROOT to default database location'%uri
(scheme,netloc,path,parameters,query,fragment)=cdurlparse.urlparse(uri)
if scheme in ['','ldap']:
try:
ldapdb = ldap.open(netloc)
except:
raise CDMSError, ConnectError +"%s\n%s"%(uri,sys.exc_value)
try:
ldapdb.simple_bind_s(user,password)
except:
raise CDMSError, AuthenticationError + "%s\n%s"%(uri,sys.exc_value)
try:
result = ldapdb.search_s(path[1:], ldap.SCOPE_SUBTREE, "objectclass=database")
except:
raise CDMSError, DatabaseNotFound + "%s\n%s"%(uri,sys.exc_value)
try:
dn, attrs = result[0]
except:
raise CDMSError, PermissionError + uri
newuri = "ldap://%s/%s"%(netloc,dn)
db = LDAPDatabase(newuri, ldapdb)
db.setExternalDict(attrs)
return db
else:
raise CDMSError, SchemeNotSupported + scheme
def connect(uri=None, user="", password=""):
"""
Method:
connect(uri=None, user="", password="")
Description:
Open a CDMS database connection.
Arguments:
uri: Universal Resource Identifier. If unspecified, defaults to the environment variable CDMSROOT.
user: user id
password: password
Returns:
Database instance.
Example:
db = cdms.connect("ldap://dbhost.llnl.gov/database=CDMS,ou=PCMDI,o=LLNL,c=US")
"""
if uri is None:
try:
uri = os.environ['CDMSROOT']
except KeyError:
raise CDMSError, ConnectError + '%s\nSet environment variable CDMSROOT to default database location' % uri
(scheme, netloc, path, parameters, query,
fragment) = cdurlparse.urlparse(uri)
if scheme in ['', 'ldap']:
try:
ldapdb = ldap.open(netloc)
except:
raise CDMSError, ConnectError + "%s\n%s" % (uri, sys.exc_value)
try:
ldapdb.simple_bind_s(user, password)
except:
raise CDMSError, AuthenticationError + "%s\n%s" % (uri,
sys.exc_value)
try:
result = ldapdb.search_s(path[1:], ldap.SCOPE_SUBTREE,
"objectclass=database")
except:
raise CDMSError, DatabaseNotFound + "%s\n%s" % (uri, sys.exc_value)
try:
dn, attrs = result[0]
except:
raise CDMSError, PermissionError + uri
newuri = "ldap://%s/%s" % (netloc, dn)
db = LDAPDatabase(newuri, ldapdb)
db.setExternalDict(attrs)
return db
else:
raise CDMSError, SchemeNotSupported + scheme
def __init__(self, uri, db):
(scheme,netloc,path,parameters,query,fragment)=cdurlparse.urlparse(uri)
AbstractDatabase.__init__(self,uri,path[1:])
self.netloc = netloc
self.db = db
def __init__(self, uri, db):
(scheme, netloc, path, parameters, query,
fragment) = cdurlparse.urlparse(uri)
AbstractDatabase.__init__(self, uri, path[1:])
self.netloc = netloc
self.db = db
