1302

Committed 17 Apr 2026 09:25PM UTC coverage: 62.398% (+0.006%) from 62.392%

Build # 1302

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Merge pull request #18778 from MinaProtocol/dkijania/fix-debian-upgrade-test-version

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79.21

/src/lib/sync_handler/sync_handler.ml

open Core_kernel
open Async
open Mina_base
module Ledger = Mina_ledger.Ledger
module Root_ledger = Mina_ledger.Root
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 =
      Root_ledger.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 (Root_ledger.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 (Root_ledger.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:
               (Breadcrumb.consensus_state_with_hashes
                  best_tip_with_witness.data )
             ~candidate:seen_consensus_state )
          `Keep
      in
      let%map () = Option.some_if is_tip_better () in
      best_tip_with_witness

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

MinaProtocol / mina / 1302

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