def get_next_ref(uid, server_address):
"""Get the nextref setting for a (user, server) pair.
Look up in the local table. Default to 0.
"""
store = JsonStore("nextref.json")
store.read()
return store.data.get(uid, {}).get(server_address, None)
def save_next_ref(uid, server_address, nextref):
"""Save the nextref setting for a (user, server) pair."""
store = JsonStore("nextref.json")
store.read()
uid_entry = store.data.get(uid, {})
uid_entry[server_address] = nextref
store.data[uid] = uid_entry
store.write()
