ligo/lib_node_p2p/p2p_maintenance.mli
Grégoire Henry 82857dcb94 Jbuilder: split lib_node_net
- `lib_node_p2p_base`: Base datatypes for the P2P layers
- `lib_node_services`: RPC service definitions (depends on `node_p2p_base`)
- `lib_node_http`: RPC http server
- `lib_node_p2p`: the P2P workers
2017-12-04 19:15:26 +01:00

46 lines
1.7 KiB
OCaml

(**************************************************************************)
(* *)
(* Copyright (c) 2014 - 2017. *)
(* Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* *)
(* All rights reserved. No warranty, explicit or implicit, provided. *)
(* *)
(**************************************************************************)
(* min <= min_threshold <= min_target <= max_target <= max_threshold <= max *)
(* The 'pool' urges the maintainer to work when the number of
connections reaches `max` or is below `min`. Otherwise, the
maintener is lazy and only lookup for connection every two
minutes. The [maintain] function is another way to signal the
maintainer that a maintenance step is desired.
When the maintener detects that the number of connections is over
`max_threshold`, it randomly kills connections to reach `max_target`.
When the maintener detects that the number of connections is below
`min_threshold`, it creates enough connection to reach at least
`min_target` (and never more than `max_target`). In the process, it
might ask its actual peers for new peers. *)
type bounds = {
min_threshold: int ;
min_target: int ;
max_target: int ;
max_threshold: int ;
}
type 'meta t
(** Type of a maintenance worker. *)
val run:
connection_timeout:float ->
bounds ->
('msg, 'meta) P2p_connection_pool.t ->
P2p_discovery.t option ->
'meta t
val maintain: 'meta t -> unit Lwt.t
val shutdown: 'meta t -> unit Lwt.t