def list_column_families(self):
"""List the column families owned by this table.
:rtype: dict
:returns: Dictionary of column families attached to this table. Keys
are strings (column family names) and values are
:class:`.ColumnFamily` instances.
:raises: :class:`ValueError <exceptions.ValueError>` if the column
family name from the response does not agree with the computed
name from the column family ID.
"""
request_pb = table_admin_messages_v2_pb2.GetTableRequest(
name=self.name)
client = self._instance._client
# We expect a `._generated.table_pb2.Table`
table_pb = client._table_stub.GetTable(request_pb,
client.timeout_seconds)
result = {}
for column_family_id, value_pb in table_pb.column_families.items():
gc_rule = _gc_rule_from_pb(value_pb.gc_rule)
column_family = self.column_family(column_family_id,
gc_rule=gc_rule)
result[column_family_id] = column_family
return result
def _GetTableRequestPB(*args, **kw):
from gcloud.bigtable._generated import (bigtable_table_admin_pb2 as
table_admin_v2_pb2)
return table_admin_v2_pb2.GetTableRequest(*args, **kw)