Is there any way to access metadata of a namespace in Google Cloud Datastore? Im interested in getting something like a created_at property.
In order to find out all provided properties/attributes for a namespace:
ds_client = get_datastore_client(project=PROJECT)
query = ds_client.query(kind="__namespace__")
query.keys_only()
for ns in query.fetch():
print(ns)
print(dir(ns))
Output:
<Entity('__namespace__', 'xxxxx') {}>
['__class__', '__contains__', '__delattr__', '__delitem__', '__dict__', '__dir__',
'__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__',
'__gt__', '__hash__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__',
'__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',
'__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__',
'_meanings', 'clear', 'copy', 'exclude_from_indexes', 'fromkeys', 'get', 'id', 'items',
'key', 'keys', 'kind', 'pop', 'popitem', 'setdefault', 'update', 'values']
Nothing seems promising
Namespaces are implicitly created, so there isn't a backing entity for each namespace. Thus there isn't metadata on a namespace. Stats entities Stat_Ns_Total are the closest thing to metadata for namespaces.
The entities from __namespace__ aren't stored entities and are created for the query itself.
Each entity in Firestore in Datastore mode has a version field that's available through the EntityResult, but the python client library strips that away from you :( and only provides an updated time and not a created time.