Meta-data Methods

class rucio.client.metaclient.MetaClient(rucio_host=None, auth_host=None, account=None, ca_cert=None, auth_type=None, creds=None, timeout=None)

Bases: rucio.client.baseclient.BaseClient

Meta client class for working with data identifier attributes

META_BASEURL = 'meta'

add_key(key, key_type, value_type=None, value_regexp=None)

Sends the request to add a new key.

Parameters:

• key – the name for the new key.
• key_type – the type of the key: all(container, dataset, file), collection(dataset or container), file, derived(compute from file for collection).
• value_type – the type of the value, if defined.
• value_regexp – the regular expression that values should match, if defined.

Returns:

True if key was created successfully.

Raises Duplicate:  

if key already exists.

add_value(key, value)

Sends the request to add a value to a key.

Parameters:

• key – the name for key.
• value – the value.

Returns:

True if value was created successfully.

Raises Duplicate:  

if valid already exists.

del_key(key)

Delete an allowed key.

Parameters:key – the name for key.

del_value(key, value)

Delete a value for a key.

Parameters:

• key – the name for key.
• value – the value.

list_keys()

Sends the request to list all keys.

Returns:a list containing the names of all keys.

list_values(key)

Sends the request to list all values for a key.

Returns:a list containing the names of all values for a key.

update_key(key, type=None, regepx=None)

Update a key.

Parameters:

• key – the name for key.
• type – the type of the value, if defined.
• regexp – the regular expression that values should match, if defined.