101 lines
3.7 KiB
OCaml
101 lines
3.7 KiB
OCaml
(**************************************************************************)
|
|
(* *)
|
|
(* Copyright (c) 2014 - 2017. *)
|
|
(* Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
|
|
(* *)
|
|
(* All rights reserved. No warranty, explicit or implicit, provided. *)
|
|
(* *)
|
|
(**************************************************************************)
|
|
|
|
open Logging.Node.State
|
|
open State
|
|
|
|
let mempool_encoding = State.mempool_encoding
|
|
|
|
let genesis net_state =
|
|
let genesis = Net.genesis net_state in
|
|
Block.read_exn net_state genesis.block
|
|
|
|
let known_heads net_state =
|
|
read_chain_store net_state begin fun chain_store _data ->
|
|
Store.Chain.Known_heads.elements chain_store
|
|
end >>= fun hashes ->
|
|
Lwt_list.map_p (Block.read_exn net_state) hashes
|
|
|
|
let head net_state =
|
|
read_chain_store net_state begin fun _chain_store data ->
|
|
Lwt.return data.current_head
|
|
end
|
|
|
|
let mem net_state hash =
|
|
read_chain_store net_state begin fun chain_store data ->
|
|
if Block_hash.equal (Block.hash data.current_head) hash then
|
|
Lwt.return true
|
|
else
|
|
Store.Chain.In_chain.known (chain_store, hash)
|
|
end
|
|
|
|
type data = State.chain_data = {
|
|
current_head: Block.t ;
|
|
current_mempool: mempool ;
|
|
live_blocks: Block_hash.Set.t ;
|
|
live_operations: Operation_hash.Set.t ;
|
|
}
|
|
|
|
let data net_state =
|
|
read_chain_store net_state begin fun _chain_store data ->
|
|
Lwt.return data
|
|
end
|
|
|
|
let locked_set_head chain_store data block =
|
|
let rec pop_blocks ancestor block =
|
|
let hash = Block.hash block in
|
|
if Block_hash.equal hash ancestor then
|
|
Lwt.return_unit
|
|
else
|
|
lwt_debug "pop_block %a" Block_hash.pp_short hash >>= fun () ->
|
|
Store.Chain.In_chain.remove (chain_store, hash) >>= fun () ->
|
|
Block.predecessor block >>= function
|
|
| Some predecessor ->
|
|
pop_blocks ancestor predecessor
|
|
| None -> assert false (* Cannot pop the genesis... *)
|
|
in
|
|
let push_block pred_hash block =
|
|
let hash = Block.hash block in
|
|
lwt_debug "push_block %a" Block_hash.pp_short hash >>= fun () ->
|
|
Store.Chain.In_chain.store (chain_store, pred_hash) hash >>= fun () ->
|
|
Lwt.return hash
|
|
in
|
|
Chain_traversal.new_blocks
|
|
~from_block:data.current_head ~to_block:block >>= fun (ancestor, path) ->
|
|
let ancestor = Block.hash ancestor in
|
|
pop_blocks ancestor data.current_head >>= fun () ->
|
|
Lwt_list.fold_left_s push_block ancestor path >>= fun _ ->
|
|
Store.Chain.Current_head.store chain_store (Block.hash block) >>= fun () ->
|
|
(* TODO more optimized updated of live_{blocks/operations} when the
|
|
new head is a direct successor of the current head... *)
|
|
Chain_traversal.live_blocks
|
|
block (State.Block.max_operations_ttl block) >>= fun (live_blocks,
|
|
live_operations) ->
|
|
Lwt.return { current_head = block ;
|
|
current_mempool = State.empty_mempool ;
|
|
live_blocks ;
|
|
live_operations ;
|
|
}
|
|
|
|
let set_head net_state block =
|
|
update_chain_store net_state begin fun chain_store data ->
|
|
locked_set_head chain_store data block >>= fun new_chain_data ->
|
|
Lwt.return (Some new_chain_data,
|
|
data.current_head)
|
|
end
|
|
|
|
let test_and_set_head net_state ~old block =
|
|
update_chain_store net_state begin fun chain_store data ->
|
|
if not (Block.equal data.current_head old) then
|
|
Lwt.return (None, false)
|
|
else
|
|
locked_set_head chain_store data block >>= fun new_chain_data ->
|
|
Lwt.return (Some new_chain_data, true)
|
|
end
|