MinaProtocol / mina / 678

Committed 09 Oct 2025 05:29PM UTC coverage: 32.327% (-4.8%) from 37.108%

Build # 678

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Merge pull request #17927 from MinaProtocol/dkijana/port_publish_fix_master_dev

port publish fix master to dev

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1.96

/src/lib/sync_handler/sync_handler.ml

open Core_kernel
open Async
open Mina_base
module Ledger = Mina_ledger.Ledger
module Sync_ledger = Mina_ledger.Sync_ledger
open Frontier_base
open Network_peer

module type CONTEXT = sig
  val logger : Logger.t

  val precomputed_values : Precomputed_values.t

  val constraint_constants : Genesis_constants.Constraint_constants.t

  val consensus_constants : Consensus.Constants.t

  val ledger_sync_config : Syncable_ledger.daemon_config

  val proof_cache_db : Proof_cache_tag.cache_db

  val signature_kind : Mina_signature_kind.t
end

module type Inputs_intf = sig
  module Transition_frontier : module type of Transition_frontier

  module Best_tip_prover :
    Mina_intf.Best_tip_prover_intf
      with type transition_frontier := Transition_frontier.t
end

module Make (Inputs : Inputs_intf) :
  Mina_intf.Sync_handler_intf
    with type transition_frontier := Inputs.Transition_frontier.t = struct
  open Inputs

  let find_in_root_history frontier state_hash =
    let open Transition_frontier.Extensions in
    let root_history =
      get_extension (Transition_frontier.extensions frontier) Root_history
    in
    Root_history.lookup root_history state_hash

  let protocol_states_in_root_history frontier state_hash =
    let open Transition_frontier.Extensions in
    let root_history =
      get_extension (Transition_frontier.extensions frontier) Root_history
    in
    Root_history.protocol_states_for_scan_state root_history state_hash

  let get_ledger_by_hash ~frontier ledger_hash =
    let root_ledger =
      Ledger.Root.as_unmasked
      @@ Transition_frontier.root_snarked_ledger frontier
    in
    let staking_epoch_ledger =
      Transition_frontier.consensus_local_state frontier
      |> Consensus.Data.Local_state.staking_epoch_ledger
    in
    let next_epoch_ledger =
      Transition_frontier.consensus_local_state frontier
      |> Consensus.Data.Local_state.next_epoch_ledger
    in
    if
      Ledger_hash.equal ledger_hash
        (Ledger.Any_ledger.M.merkle_root root_ledger)
    then Some root_ledger
    else if
      Ledger_hash.equal ledger_hash
        (Consensus.Data.Local_state.Snapshot.Ledger_snapshot.merkle_root
           staking_epoch_ledger )
    then
      match staking_epoch_ledger with
      | Consensus.Data.Local_state.Snapshot.Ledger_snapshot.Genesis_epoch_ledger
          _ ->
          None
      | Ledger_root ledger ->
          Some (Ledger.Root.as_unmasked ledger)
    else if
      Ledger_hash.equal ledger_hash
        (Consensus.Data.Local_state.Snapshot.Ledger_snapshot.merkle_root
           next_epoch_ledger )
    then
      match next_epoch_ledger with
      | Consensus.Data.Local_state.Snapshot.Ledger_snapshot.Genesis_epoch_ledger
          _ ->
          None
      | Ledger_root ledger ->
          Some (Ledger.Root.as_unmasked ledger)
    else None

  let answer_query :
         frontier:Inputs.Transition_frontier.t
      -> Ledger_hash.t
      -> Sync_ledger.Query.t Envelope.Incoming.t
      -> context:(module CONTEXT)
      -> trust_system:Trust_system.t
      -> Sync_ledger.Answer.t Or_error.t Deferred.t =
   fun ~frontier hash query ~context:(module Context) ~trust_system ->
    match get_ledger_by_hash ~frontier hash with
    | None ->
        return
          (Or_error.error_string
             (sprintf
                !"Failed to find ledger for hash %{sexp:Ledger_hash.t}"
                hash ) )
    | Some ledger ->
        let responder =
          Sync_ledger.Any_ledger.Responder.create ledger ignore
            ~context:(module Context)
            ~trust_system
        in
        Sync_ledger.Any_ledger.Responder.answer_query responder query

  let get_staged_ledger_aux_and_pending_coinbases_at_hash ~logger ~frontier
      state_hash =
    let open Option.Let_syntax in
    let protocol_states scan_state =
      Staged_ledger.Scan_state.required_state_hashes scan_state
      |> State_hash.Set.to_list
      |> List.fold_until ~init:(Some [])
           ~f:(fun acc hash ->
             match
               Option.map2
                 (Transition_frontier.find_protocol_state frontier hash)
                 acc ~f:List.cons
             with
             | None ->
                 Stop None
             | Some acc' ->
                 Continue (Some acc') )
           ~finish:Fn.id
    in
    match
      let%bind breadcrumb = Transition_frontier.find frontier state_hash in
      let staged_ledger =
        Transition_frontier.Breadcrumb.staged_ledger breadcrumb
      in
      let scan_state = Staged_ledger.scan_state staged_ledger in
      let staged_ledger_hash = Breadcrumb.staged_ledger_hash breadcrumb in
      let merkle_root = Staged_ledger_hash.ledger_hash staged_ledger_hash in
      let%map scan_state_protocol_states = protocol_states scan_state in
      let pending_coinbase =
        Staged_ledger.pending_coinbase_collection staged_ledger
      in
      [%log debug]
        ~metadata:
          [ ( "staged_ledger_hash"
            , Staged_ledger_hash.to_yojson staged_ledger_hash )
          ]
        "sending scan state and pending coinbase" ;
      (scan_state, merkle_root, pending_coinbase, scan_state_protocol_states)
    with
    | Some res ->
        Some res
    | None ->
        let open Root_data.Historical in
        let%bind root = find_in_root_history frontier state_hash in
        let%map scan_state_protocol_states =
          protocol_states_in_root_history frontier state_hash
        in
        ( scan_state root
        , staged_ledger_target_ledger_hash root
        , pending_coinbase root
        , scan_state_protocol_states )

  let get_transition_chain ~frontier hashes =
    let open Option.Let_syntax in
    let%bind () =
      let requested = List.length hashes in
      if requested <= Transition_frontier.max_catchup_chunk_length then Some ()
      else (
        [%log' trace (Logger.create ())]
          ~metadata:[ ("n", `Int requested) ]
          "get_transition_chain requested $n > %d hashes"
          Transition_frontier.max_catchup_chunk_length ;
        None )
    in
    let get hash =
      let%map validated_transition =
        Option.merge
          Transition_frontier.(
            find frontier hash >>| Breadcrumb.validated_transition)
          ( find_in_root_history frontier hash
          >>| Root_data.Historical.transition )
          ~f:Fn.const
      in
      With_hash.data @@ Mina_block.Validated.forget validated_transition
    in
    match Transition_frontier.catchup_state frontier with
    | Full _ ->
        (* Super catchup *)
        Option.return @@ List.filter_map hashes ~f:get

  let best_tip_path ~frontier =
    let rec go acc b =
      let acc = Breadcrumb.state_hash b :: acc in
      match Transition_frontier.find frontier (Breadcrumb.parent_hash b) with
      | None ->
          acc
      | Some b' ->
          go acc b'
    in
    go [] (Transition_frontier.best_tip frontier)

  module Root = struct
    let prove ~context:(module Context : CONTEXT) ~frontier seen_consensus_state
        =
      let module Context = struct
        include Context

        let logger =
          Logger.extend logger [ ("selection_context", `String "Root.prove") ]
      end in
      let open Option.Let_syntax in
      let%bind best_tip_with_witness =
        Best_tip_prover.prove ~context:(module Context) frontier
      in
      let is_tip_better =
        Consensus.Hooks.equal_select_status
          (Consensus.Hooks.select
             ~context:(module Context)
             ~existing:
               (With_hash.map ~f:Mina_block.consensus_state
                  best_tip_with_witness.data )
             ~candidate:seen_consensus_state )
          `Keep
      in
      let%map () = Option.some_if is_tip_better () in
      { best_tip_with_witness with
        data = With_hash.data best_tip_with_witness.data
      }

    let verify ~context:(module Context : CONTEXT) ~verifier observed_state
        peer_root =
      let module Context = struct
        include Context

        let logger =
          Logger.extend logger [ ("selection_context", `String "Root.verify") ]
      end in
      let open Context in
      let open Deferred.Result.Let_syntax in
      (*TODO: use precomputed_values.genesis_constants that's already passed*)
      let%bind ( (`Root _, `Best_tip (best_tip_transition, _)) as
               verified_witness ) =
        Best_tip_prover.verify ~verifier
          ~genesis_constants:precomputed_values.genesis_constants
          ~precomputed_values peer_root
      in
      let is_before_best_tip candidate =
        Consensus.Hooks.equal_select_status
          (Consensus.Hooks.select
             ~context:(module Context)
             ~existing:
               (With_hash.map
                  ~f:
                    (Fn.compose Mina_state.Protocol_state.consensus_state
                       Mina_block.Header.protocol_state )
                  best_tip_transition )
             ~candidate )
          `Keep
      in
      let%map () =
        Deferred.return
          (Result.ok_if_true
             (is_before_best_tip observed_state)
             ~error:
               (Error.createf
                  !"Peer lied about it's best tip %{sexp:State_hash.t}"
                  (State_hash.With_state_hashes.state_hash best_tip_transition) ) )
      in
      verified_witness
  end
end

include Make (struct
  module Transition_frontier = Transition_frontier
  module Best_tip_prover = Best_tip_prover
end)

(* TODO: port these tests *)
(*
let%test_module "Sync_handler" =
  ( module struct
    let logger = Logger.null ()

    let hb_logger = Logger.create ()

    let pids = Child_processes.Termination.create_pid_table ()

    let trust_system = Trust_system.null ()

    let f_with_verifier ~f ~logger ~pids =
      let%map verifier = Verifier.create ~logger ~pids in
      f ~logger ~verifier

    let%test "sync with ledgers from another peer via glue_sync_ledger" =
      Backtrace.elide := false ;
      Printexc.record_backtrace true ;
      heartbeat_flag := true ;
      Ledger.with_ephemeral_ledger ~f:(fun dest_ledger ->
          Thread_safe.block_on_async_exn (fun () ->
              print_heartbeat hb_logger |> don't_wait_for ;
              let%bind frontier =
                create_root_frontier ~logger ~pids Test_genesis_ledger.accounts
              in
              let source_ledger =
                Transition_frontier.For_tests.root_snarked_ledger frontier
                |> Ledger.of_database
              in
              let desired_root = Ledger.merkle_root source_ledger in
              let sync_ledger =
                Sync_ledger.Mask.create dest_ledger ~logger ~trust_system
              in
              let query_reader = Sync_ledger.Mask.query_reader sync_ledger in
              let answer_writer = Sync_ledger.Mask.answer_writer sync_ledger in
              let peer =
                Network_peer.Peer.create Unix.Inet_addr.localhost
                  ~discovery_port:0 ~communication_port:1
              in
              let network =
                Network.create_stub ~logger
                  ~ip_table:
                    (Hashtbl.of_alist_exn
                       (module Unix.Inet_addr)
                       [(peer.host, frontier)])
                  ~peers:(Hash_set.of_list (module Network_peer.Peer) [peer])
              in
              Network.glue_sync_ledger network query_reader answer_writer ;
              match%map
                Sync_ledger.Mask.fetch sync_ledger desired_root ~data:()
                  ~equal:(fun () () -> true)
              with
              | `Ok synced_ledger ->
                  heartbeat_flag := false ;
                  Ledger_hash.equal
                    (Ledger.merkle_root dest_ledger)
                    (Ledger.merkle_root source_ledger)
                  && Ledger_hash.equal
                       (Ledger.merkle_root synced_ledger)
                       (Ledger.merkle_root source_ledger)
              | `Target_changed _ ->
                  heartbeat_flag := false ;
                  failwith "target of sync_ledger should not change" ) )

    let to_external_transition breadcrumb =
      Transition_frontier.Breadcrumb.validated_transition breadcrumb
      |> Mina_block.Validated.forget

    let%test "a node should be able to give a valid proof of their root" =
      heartbeat_flag := true ;
      let max_length = 4 in
      (* Generating this many breadcrumbs will ernsure the transition_frontier to be full  *)
      let num_breadcrumbs = max_length + 2 in
      Thread_safe.block_on_async_exn (fun () ->
          print_heartbeat hb_logger |> don't_wait_for ;
          let%bind frontier =
            create_root_frontier ~logger ~pids Test_genesis_ledger.accounts
          in
          let%bind () =
            build_frontier_randomly frontier
              ~gen_root_breadcrumb_builder:
                (gen_linear_breadcrumbs ~logger ~pids ~trust_system
                   ~size:num_breadcrumbs
                   ~accounts_with_secret_keys:Test_genesis_ledger.accounts)
          in
          let seen_transition =
            Transition_frontier.(
              all_breadcrumbs frontier |> List.permute |> List.hd_exn
              |> Breadcrumb.validated_transition)
          in
          let observed_state =
            Mina_block.Validated.protocol_state seen_transition
            |> Protocol_state.consensus_state
          in
          let root_with_proof =
            Option.value_exn ~message:"Could not produce an ancestor proof"
              (Sync_handler.Root.prove ~logger ~frontier observed_state)
          in
          let%bind verify =
            f_with_verifier ~f:Sync_handler.Root.verify ~logger ~pids
          in
          let%map `Root (root_transition, _), `Best_tip (best_tip_transition, _)
              =
            verify observed_state root_with_proof |> Deferred.Or_error.ok_exn
          in
          heartbeat_flag := false ;
          Mina_block.(
            equal
              (With_hash.data root_transition)
              (to_external_transition (Transition_frontier.root frontier))
            && equal
                 (With_hash.data best_tip_transition)
                 (to_external_transition
                    (Transition_frontier.best_tip frontier))) )
  end )
*)

1	open Core_kernel	112✔
2	open Async
3	open Mina_base
4	module Ledger = Mina_ledger.Ledger
5	module Sync_ledger = Mina_ledger.Sync_ledger
6	open Frontier_base
7	open Network_peer
8
9	module type CONTEXT = sig
10	val logger : Logger.t
11
12	val precomputed_values : Precomputed_values.t
13
14	val constraint_constants : Genesis_constants.Constraint_constants.t
15
16	val consensus_constants : Consensus.Constants.t
17
18	val ledger_sync_config : Syncable_ledger.daemon_config
19
20	val proof_cache_db : Proof_cache_tag.cache_db
21
22	val signature_kind : Mina_signature_kind.t
23	end
24
25	module type Inputs_intf = sig
26	module Transition_frontier : module type of Transition_frontier
27
28	module Best_tip_prover :
29	Mina_intf.Best_tip_prover_intf
30	with type transition_frontier := Transition_frontier.t
31	end
32
33	module Make (Inputs : Inputs_intf) :
34	Mina_intf.Sync_handler_intf
35	with type transition_frontier := Inputs.Transition_frontier.t = struct
36	open Inputs
37
38	let find_in_root_history frontier state_hash =
39	let open Transition_frontier.Extensions in	×
40	let root_history =
41	get_extension (Transition_frontier.extensions frontier) Root_history	×
42	in
43	Root_history.lookup root_history state_hash	×
44
45	let protocol_states_in_root_history frontier state_hash =
46	let open Transition_frontier.Extensions in	×
47	let root_history =
48	get_extension (Transition_frontier.extensions frontier) Root_history	×
49	in
50	Root_history.protocol_states_for_scan_state root_history state_hash	×
51
52	let get_ledger_by_hash ~frontier ledger_hash =
53	let root_ledger =	×
54	Ledger.Root.as_unmasked
55	@@ Transition_frontier.root_snarked_ledger frontier	×
56	in
57	let staking_epoch_ledger =	×
58	Transition_frontier.consensus_local_state frontier	×
59	\|> Consensus.Data.Local_state.staking_epoch_ledger
60	in
61	let next_epoch_ledger =	×
62	Transition_frontier.consensus_local_state frontier	×
63	\|> Consensus.Data.Local_state.next_epoch_ledger
64	in
65	if	×
66	Ledger_hash.equal ledger_hash
67	(Ledger.Any_ledger.M.merkle_root root_ledger)	×
68	then Some root_ledger	×
69	else if	×
70	Ledger_hash.equal ledger_hash
71	(Consensus.Data.Local_state.Snapshot.Ledger_snapshot.merkle_root	×
72	staking_epoch_ledger )
73	then
74	match staking_epoch_ledger with	×
75	\| Consensus.Data.Local_state.Snapshot.Ledger_snapshot.Genesis_epoch_ledger	×
76	_ ->
77	None
78	\| Ledger_root ledger ->	×
79	Some (Ledger.Root.as_unmasked ledger)	×
80	else if	×
81	Ledger_hash.equal ledger_hash
82	(Consensus.Data.Local_state.Snapshot.Ledger_snapshot.merkle_root	×
83	next_epoch_ledger )
84	then
85	match next_epoch_ledger with	×
86	\| Consensus.Data.Local_state.Snapshot.Ledger_snapshot.Genesis_epoch_ledger	×
87	_ ->
88	None
89	\| Ledger_root ledger ->	×
90	Some (Ledger.Root.as_unmasked ledger)	×
91	else None	×
92
93	let answer_query :
94	frontier:Inputs.Transition_frontier.t
95	-> Ledger_hash.t
96	-> Sync_ledger.Query.t Envelope.Incoming.t
97	-> context:(module CONTEXT)
98	-> trust_system:Trust_system.t
99	-> Sync_ledger.Answer.t Or_error.t Deferred.t =
100	fun ~frontier hash query ~context:(module Context) ~trust_system ->
101	match get_ledger_by_hash ~frontier hash with	×
102	\| None ->	×
103	return
104	(Or_error.error_string	×
105	(sprintf	×
106	!"Failed to find ledger for hash %{sexp:Ledger_hash.t}"	×
107	hash ) )
108	\| Some ledger ->	×
109	let responder =
110	Sync_ledger.Any_ledger.Responder.create ledger ignore
111	~context:(module Context)
112	~trust_system
113	in
114	Sync_ledger.Any_ledger.Responder.answer_query responder query	×
115
116	let get_staged_ledger_aux_and_pending_coinbases_at_hash ~logger ~frontier
117	state_hash =
118	let open Option.Let_syntax in	×
119	let protocol_states scan_state =
120	Staged_ledger.Scan_state.required_state_hashes scan_state	×
121	\|> State_hash.Set.to_list	×
122	\|> List.fold_until ~init:(Some [])
123	~f:(fun acc hash ->
124	match	×
125	Option.map2
126	(Transition_frontier.find_protocol_state frontier hash)	×
127	acc ~f:List.cons
128	with
129	\| None ->	×
130	Stop None
131	\| Some acc' ->	×
132	Continue (Some acc') )
133	~finish:Fn.id
134	in
135	match
136	let%bind breadcrumb = Transition_frontier.find frontier state_hash in	×
137	let staged_ledger =	×
138	Transition_frontier.Breadcrumb.staged_ledger breadcrumb
139	in
140	let scan_state = Staged_ledger.scan_state staged_ledger in	×
141	let staged_ledger_hash = Breadcrumb.staged_ledger_hash breadcrumb in	×
142	let merkle_root = Staged_ledger_hash.ledger_hash staged_ledger_hash in	×
143	let%map scan_state_protocol_states = protocol_states scan_state in	×
144	let pending_coinbase =	×
145	Staged_ledger.pending_coinbase_collection staged_ledger
146	in
147	[%log debug]	×
148	~metadata:
149	[ ( "staged_ledger_hash"
150	, Staged_ledger_hash.to_yojson staged_ledger_hash )	×
151	]
152	"sending scan state and pending coinbase" ;
153	(scan_state, merkle_root, pending_coinbase, scan_state_protocol_states)	×
154	with
155	\| Some res ->	×
156	Some res
157	\| None ->	×
158	let open Root_data.Historical in
159	let%bind root = find_in_root_history frontier state_hash in	×
160	let%map scan_state_protocol_states =
161	protocol_states_in_root_history frontier state_hash	×
162	in
163	( scan_state root	×
164	, staged_ledger_target_ledger_hash root	×
165	, pending_coinbase root	×
166	, scan_state_protocol_states )
167
168	let get_transition_chain ~frontier hashes =
169	let open Option.Let_syntax in	×
170	let%bind () =
171	let requested = List.length hashes in
172	if requested <= Transition_frontier.max_catchup_chunk_length then Some ()	×
173	else (	×
174	[%log' trace (Logger.create ())]	×
175	~metadata:[ ("n", `Int requested) ]
176	"get_transition_chain requested $n > %d hashes"
177	Transition_frontier.max_catchup_chunk_length ;
178	None )	×
179	in
180	let get hash =	×
181	let%map validated_transition =
182	Option.merge	×
183	Transition_frontier.(
184	find frontier hash >>\| Breadcrumb.validated_transition)	×
185	( find_in_root_history frontier hash	×
186	>>\| Root_data.Historical.transition )	×
187	~f:Fn.const
188	in
189	With_hash.data @@ Mina_block.Validated.forget validated_transition	×
190	in
191	match Transition_frontier.catchup_state frontier with
192	\| Full _ ->	×
193	(* Super catchup *)
194	Option.return @@ List.filter_map hashes ~f:get	×
195
196	let best_tip_path ~frontier =
197	let rec go acc b =	×
198	let acc = Breadcrumb.state_hash b :: acc in	×
199	match Transition_frontier.find frontier (Breadcrumb.parent_hash b) with	×
200	\| None ->	×
201	acc
202	\| Some b' ->	×
203	go acc b'
204	in
205	go [] (Transition_frontier.best_tip frontier)	×
206
207	module Root = struct
208	let prove ~context:(module Context : CONTEXT) ~frontier seen_consensus_state
209	=
210	let module Context = struct	×
211	include Context
212
213	let logger =
214	Logger.extend logger [ ("selection_context", `String "Root.prove") ]	×
215	end in
216	let open Option.Let_syntax in
217	let%bind best_tip_with_witness =
218	Best_tip_prover.prove ~context:(module Context) frontier	×
219	in
220	let is_tip_better =	×
221	Consensus.Hooks.equal_select_status
222	(Consensus.Hooks.select
223	~context:(module Context)
224	~existing:
225	(With_hash.map ~f:Mina_block.consensus_state	×
226	best_tip_with_witness.data )
227	~candidate:seen_consensus_state )
228	`Keep
229	in
230	let%map () = Option.some_if is_tip_better () in	×
231	{ best_tip_with_witness with	×
232	data = With_hash.data best_tip_with_witness.data	×
233	}
234
235	let verify ~context:(module Context : CONTEXT) ~verifier observed_state
236	peer_root =
237	let module Context = struct	×
238	include Context
239
240	let logger =
241	Logger.extend logger [ ("selection_context", `String "Root.verify") ]	×
242	end in
243	let open Context in
244	let open Deferred.Result.Let_syntax in
245	(TODO: use precomputed_values.genesis_constants that's already passed)
246	let%bind ( (`Root _, `Best_tip (best_tip_transition, _)) as
247	verified_witness ) =
248	Best_tip_prover.verify ~verifier	×
249	~genesis_constants:precomputed_values.genesis_constants
250	~precomputed_values peer_root
251	in
252	let is_before_best_tip candidate =	×
253	Consensus.Hooks.equal_select_status	×
254	(Consensus.Hooks.select
255	~context:(module Context)
256	~existing:
257	(With_hash.map	×
258	~f:
259	(Fn.compose Mina_state.Protocol_state.consensus_state	×
260	Mina_block.Header.protocol_state )
261	best_tip_transition )
262	~candidate )
263	`Keep
264	in
265	let%map () =
266	Deferred.return	×
267	(Result.ok_if_true	×
268	(is_before_best_tip observed_state)	×
269	~error:
270	(Error.createf	×
271	!"Peer lied about it's best tip %{sexp:State_hash.t}"	×
272	(State_hash.With_state_hashes.state_hash best_tip_transition) ) )	×
273	in
274	verified_witness	×
275	end
276	end
277
278	include Make (struct
279	module Transition_frontier = Transition_frontier
280	module Best_tip_prover = Best_tip_prover
281	end)	224✔
282
283	(* TODO: port these tests *)
284	(*
285	let%test_module "Sync_handler" =
286	( module struct
287	let logger = Logger.null ()
288
289	let hb_logger = Logger.create ()
290
291	let pids = Child_processes.Termination.create_pid_table ()
292
293	let trust_system = Trust_system.null ()
294
295	let f_with_verifier ~f ~logger ~pids =
296	let%map verifier = Verifier.create ~logger ~pids in
297	f ~logger ~verifier
298
299	let%test "sync with ledgers from another peer via glue_sync_ledger" =
300	Backtrace.elide := false ;
301	Printexc.record_backtrace true ;
302	heartbeat_flag := true ;
303	Ledger.with_ephemeral_ledger ~f:(fun dest_ledger ->
304	Thread_safe.block_on_async_exn (fun () ->
305	print_heartbeat hb_logger \|> don't_wait_for ;
306	let%bind frontier =
307	create_root_frontier ~logger ~pids Test_genesis_ledger.accounts
308	in
309	let source_ledger =
310	Transition_frontier.For_tests.root_snarked_ledger frontier
311	\|> Ledger.of_database
312	in
313	let desired_root = Ledger.merkle_root source_ledger in
314	let sync_ledger =
315	Sync_ledger.Mask.create dest_ledger ~logger ~trust_system
316	in
317	let query_reader = Sync_ledger.Mask.query_reader sync_ledger in
318	let answer_writer = Sync_ledger.Mask.answer_writer sync_ledger in
319	let peer =
320	Network_peer.Peer.create Unix.Inet_addr.localhost
321	~discovery_port:0 ~communication_port:1
322	in
323	let network =
324	Network.create_stub ~logger
325	~ip_table:
326	(Hashtbl.of_alist_exn
327	(module Unix.Inet_addr)
328	[(peer.host, frontier)])
329	~peers:(Hash_set.of_list (module Network_peer.Peer) [peer])
330	in
331	Network.glue_sync_ledger network query_reader answer_writer ;
332	match%map
333	Sync_ledger.Mask.fetch sync_ledger desired_root ~data:()
334	~equal:(fun () () -> true)
335	with
336	\| `Ok synced_ledger ->
337	heartbeat_flag := false ;
338	Ledger_hash.equal
339	(Ledger.merkle_root dest_ledger)
340	(Ledger.merkle_root source_ledger)
341	&& Ledger_hash.equal
342	(Ledger.merkle_root synced_ledger)
343	(Ledger.merkle_root source_ledger)
344	\| `Target_changed _ ->
345	heartbeat_flag := false ;
346	failwith "target of sync_ledger should not change" ) )
347
348	let to_external_transition breadcrumb =
349	Transition_frontier.Breadcrumb.validated_transition breadcrumb
350	\|> Mina_block.Validated.forget
351
352	let%test "a node should be able to give a valid proof of their root" =
353	heartbeat_flag := true ;
354	let max_length = 4 in
355	(* Generating this many breadcrumbs will ernsure the transition_frontier to be full *)
356	let num_breadcrumbs = max_length + 2 in
357	Thread_safe.block_on_async_exn (fun () ->
358	print_heartbeat hb_logger \|> don't_wait_for ;
359	let%bind frontier =
360	create_root_frontier ~logger ~pids Test_genesis_ledger.accounts
361	in
362	let%bind () =
363	build_frontier_randomly frontier
364	~gen_root_breadcrumb_builder:
365	(gen_linear_breadcrumbs ~logger ~pids ~trust_system
366	~size:num_breadcrumbs
367	~accounts_with_secret_keys:Test_genesis_ledger.accounts)
368	in
369	let seen_transition =
370	Transition_frontier.(
371	all_breadcrumbs frontier \|> List.permute \|> List.hd_exn
372	\|> Breadcrumb.validated_transition)
373	in
374	let observed_state =
375	Mina_block.Validated.protocol_state seen_transition
376	\|> Protocol_state.consensus_state
377	in
378	let root_with_proof =
379	Option.value_exn ~message:"Could not produce an ancestor proof"
380	(Sync_handler.Root.prove ~logger ~frontier observed_state)
381	in
382	let%bind verify =
383	f_with_verifier ~f:Sync_handler.Root.verify ~logger ~pids
384	in
385	let%map `Root (root_transition, _), `Best_tip (best_tip_transition, _)
386	=
387	verify observed_state root_with_proof \|> Deferred.Or_error.ok_exn
388	in
389	heartbeat_flag := false ;
390	Mina_block.(
391	equal
392	(With_hash.data root_transition)
393	(to_external_transition (Transition_frontier.root frontier))
394	&& equal
395	(With_hash.data best_tip_transition)
396	(to_external_transition
397	(Transition_frontier.best_tip frontier))) )
398	end )
399	*)

MinaProtocol / mina / 678

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