Config parser

[chriso]

It would be great if we could pass around a file which contained the list of nodes and have the library parse it for us:

from clandestined import Cluster, load_nodes

cluster = Cluster(load_nodes('nodes.json'))

It doesn't matter if it uses yaml/json/ini/cfg/whatever, it's just nice having the library handle it for us.

[ewdurbin]

JSON is python std lib compatible, as well as basically every well formed language. so it's definitely the best option.

the only concern might be handling extensions in future, but i think that most things will still maintain a mapping which is basically a hash of ids to hashes containing data.

my only concern is supporting handlers down the line, so that rather than getting just a string, you can obtain a handler to the service you're connecting (Redis/Postgres/Mongo/whatever)

[ewdurbin]

so in that light, it becomes a battle to define a portable format that still allows instantiating connections to backend services.

[chriso]

Guess we can just

import json

with open('nodes.json') as config:
    nodes = json.loads(config.read())

cluster = Cluster(nodes)

[ewdurbin]

the target would only be to ever extend the "metadata" section of a nodes configuration.

it may be worth withdrawing RendezvousHash from the public API for 1.0.0 release, or having it accept a hash of hashes as well.

int the latter case, both Cluster and RendezvousHash accept the same Key-Value combinations, but RendezvousHash just drops zone information on the floor.