feature request: extend redis backend

[dondebonair]

feature request: extend redis backend

[DonDebonair]

Great idea! I'll have to think a bit on it, but I'll get back to you on this!

edit: the implementation you suggest cannot be used as-is, because what SlackMachine does by default, is prefixing keys in Redis with a unique identifier for each plugin. This should be taken into account when scanning. The pattern provided through the keys(...) method could be prefixed with the unique idea for example.

[cabrinha]

That's fine. I assume that you mean something along the lines of this:

    def keys(self, key):
        return self._redis.scan_iter(pattern='{}:*'.format(self._prefix(key)))
...

I'm adding the following right underneath http://slack-machine.readthedocs.io/en/latest/_modules/machine/storage/backends/base.html#MachineBaseStorage.get:

    def keys(self, key, shared=False):
        """Retrieve data by key

        :param key: key for the data to retrieve
        :param shared: ``True/False`` wether to retrieve data from the shared (global) namespace.
        :return: the data, or ``None`` if the key cannot be found/has expired
        """
        namespaced_key = self._namespace_key(key, shared)
        # value = Storage.get_instance().get(namespaced_key)
        value = Storage.get_instance().keys(namespaced_key)
        if value:
            return dill.loads(value)
        else:
            return None

But, I'm still getting the error:

AttributeError: 'PluginStorage' object has no attribute 'keys'

Is there something else I'm missing? It's fine if this method could be renamed to "get_all_keys", or something of the sort. I'd like to extend the functionality of the storage backend to support more (or all) redis-py functions, if possible.

After modifying these files, do I just run python3 setup.py install again?