What is the API to get all the keys (not values) in etcd3?

[vhosakot]

The get_all() API returns the values of all the keys, but not the keys themselves.

After putting the following keys and values, what is the API to get a list of just the keys /foo, /bar, /baz and /qux?

>>> etcd.put("/foo", "a")
>>> etcd.put("/bar", "b")
>>> etcd.put("/baz", "c")
>>> etcd.put("/qux", "d")

I was not able to find this in the documentation in https://python-etcd3.readthedocs.io/en/latest/usage.html.

It is possible to get just the keys in etcd3 using etcdctl the following way:

ETCDCTL_API=3 etcdctl get --prefix=true "" | grep '/'
/bar
/baz
/foo
/qux

But, I wasn't able to find the python API to do the above. Let me know if I'm missing anything.

[vhosakot]

/cc @kragniz

[vhosakot]

/cc @kragniz any thoughts?

[kragniz]

There isn't a method to do this, but you can get all and extract only the keys:

>>> c = etcd3.client()
>>> [m.key for (_, m) in c.get_all()]
[b'/bar', b'/baz', b'/foo', b'/qux'] 

[kragniz]

Maybe a utility function for this would be useful, if you'd like to submit a pr

[vhosakot]

Thanks @kragniz, that works!

>>> etcd.put("/foo", "a")
>>> etcd.put("/bar", "b")
>>> etcd.put("/baz", "c")
>>> etcd.put("/qux", "d")

>>> [m.key for (_, m) in etcd.get_all()]
['/bar', '/baz', '/foo', '/qux']

>>> for (_,m) in etcd.get_all():
...     print m.key
... 
/bar
/baz
/foo
/qux