rm Capella builder API REST calls (#5997)

beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim

@@ -84,7 +84,6 @@ RestJson.useDefaultSerializationFor(
   GetForkChoiceResponse,
   GetForkScheduleResponse,
   GetGenesisResponse,
-  GetHeaderResponseCapella,
   GetHeaderResponseDeneb,
   GetKeystoresResponse,
   GetNextWithdrawalsResponse,
@@ -168,7 +167,6 @@ RestJson.useDefaultSerializationFor(
   SignedContributionAndProof,
   SignedValidatorRegistrationV1,
   SignedVoluntaryExit,
-  SubmitBlindedBlockResponseCapella,
   SubmitBlindedBlockResponseDeneb,
   SyncAggregate,
   SyncAggregatorSelectionData,

beacon_chain/spec/eth2_apis/rest_types.nim

@@ -553,7 +553,6 @@ type
   GetEpochCommitteesResponse* = DataEnclosedObject[seq[RestBeaconStatesCommittees]]
   GetForkScheduleResponse* = DataEnclosedObject[seq[Fork]]
   GetGenesisResponse* = DataEnclosedObject[RestGenesis]
-  GetHeaderResponseCapella* = DataVersionEnclosedObject[capella_mev.SignedBuilderBid]
   GetHeaderResponseDeneb* = DataVersionEnclosedObject[deneb_mev.SignedBuilderBid]
   GetNetworkIdentityResponse* = DataEnclosedObject[RestNetworkIdentity]
   GetPeerCountResponse* = DataMetaEnclosedObject[RestPeerCount]
@@ -580,7 +579,6 @@ type
   ProduceAttestationDataResponse* = DataEnclosedObject[AttestationData]
   ProduceBlindedBlockResponse* = ForkedBlindedBeaconBlock
   ProduceSyncCommitteeContributionResponse* = DataEnclosedObject[SyncCommitteeContribution]
-  SubmitBlindedBlockResponseCapella* = DataEnclosedObject[capella.ExecutionPayload]
   SubmitBlindedBlockResponseDeneb* = DataEnclosedObject[deneb_mev.ExecutionPayloadAndBlobsBundle]
   GetValidatorsActivityResponse* = DataEnclosedObject[seq[RestActivityItem]]
   GetValidatorsLivenessResponse* = DataEnclosedObject[seq[RestLivenessItem]]

beacon_chain/spec/mev/rest_capella_mev_calls.nim

@@ -1,35 +0,0 @@
-# beacon_chain
-# Copyright (c) 2023-2024 Status Research & Development GmbH
-# Licensed and distributed under either of
-#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
-#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
-# at your option. This file may not be copied, modified, or distributed except according to those terms.
-
-{.push raises: [].}
-
-import
-  chronos, presto/client,
-  ".."/eth2_apis/[rest_types, eth2_rest_serialization]
-
-export chronos, client, rest_types, eth2_rest_serialization
-
-proc registerValidator*(body: seq[SignedValidatorRegistrationV1]
-                       ): RestPlainResponse {.
-     rest, endpoint: "/eth/v1/builder/validators",
-     meth: MethodPost, connection: {Dedicated, Close}.}
-  ## https://github.com/ethereum/builder-specs/blob/v0.4.0/apis/builder/validators.yaml
-  ## https://github.com/ethereum/beacon-APIs/blob/v2.3.0/apis/validator/register_validator.yaml
-
-proc getHeaderCapella*(slot: Slot,
-                       parent_hash: Eth2Digest,
-                       pubkey: ValidatorPubKey
-                      ): RestPlainResponse {.
-     rest, endpoint: "/eth/v1/builder/header/{slot}/{parent_hash}/{pubkey}",
-     meth: MethodGet, connection: {Dedicated, Close}.}
-  ## https://github.com/ethereum/builder-specs/blob/v0.4.0/apis/builder/header.yaml
-
-proc submitBlindedBlock*(body: capella_mev.SignedBlindedBeaconBlock
-                        ): RestPlainResponse {.
-     rest, endpoint: "/eth/v1/builder/blinded_blocks",
-     meth: MethodPost, connection: {Dedicated, Close}.}
-  ## https://github.com/ethereum/builder-specs/blob/v0.4.0/apis/builder/blinded_blocks.yaml

beacon_chain/spec/mev/rest_deneb_mev_calls.nim

@@ -13,6 +13,13 @@ import
 
 export chronos, client, rest_types, eth2_rest_serialization
 
+proc registerValidator*(body: seq[SignedValidatorRegistrationV1]
+                       ): RestPlainResponse {.
+     rest, endpoint: "/eth/v1/builder/validators",
+     meth: MethodPost, connection: {Dedicated, Close}.}
+  ## https://github.com/ethereum/builder-specs/blob/v0.4.0/apis/builder/validators.yaml
+  ## https://github.com/ethereum/beacon-APIs/blob/v2.3.0/apis/validator/register_validator.yaml
+
 proc getHeaderDeneb*(slot: Slot,
                      parent_hash: Eth2Digest,
                      pubkey: ValidatorPubKey

beacon_chain/spec/state_transition.nim

@@ -429,29 +429,9 @@ proc makeBeaconBlock*(
     # Override for Builder API
     if transactions_root.isSome and execution_payload_root.isSome:
       withState(state):
-        when consensusFork < ConsensusFork.Capella:
+        when consensusFork < ConsensusFork.Deneb:
-          # Nimbus doesn't support pre-Capella builder API
+          # Nimbus doesn't support pre-Deneb builder API
           discard
-        elif consensusFork == ConsensusFork.Capella:
-          forkyState.data.latest_execution_payload_header.transactions_root =
-            transactions_root.get
-
-          # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/capella/beacon-chain.md#beaconblockbody
-          # Effectively hash_tree_root(ExecutionPayload) with the beacon block
-          # body, with the execution payload replaced by the execution payload
-          # header. htr(payload) == htr(payload header), so substitute.
-          forkyState.data.latest_block_header.body_root = hash_tree_root(
-            [hash_tree_root(randao_reveal),
-             hash_tree_root(eth1_data),
-             hash_tree_root(graffiti),
-             hash_tree_root(validator_changes.proposer_slashings),
-             hash_tree_root(validator_changes.attester_slashings),
-             hash_tree_root(List[Attestation, Limit MAX_ATTESTATIONS](attestations)),
-             hash_tree_root(List[Deposit, Limit MAX_DEPOSITS](deposits)),
-             hash_tree_root(validator_changes.voluntary_exits),
-             hash_tree_root(sync_aggregate),
-             execution_payload_root.get,
-             hash_tree_root(validator_changes.bls_to_execution_changes)])
         elif consensusFork == ConsensusFork.Deneb:
           forkyState.data.latest_execution_payload_header.transactions_root =
             transactions_root.get

beacon_chain/validators/beacon_validators.nim

@@ -41,7 +41,7 @@ import
   ".."/[conf, beacon_clock, beacon_node],
   "."/[
     keystore_management, slashing_protection, validator_duties, validator_pool],
-  ".."/spec/mev/[rest_capella_mev_calls, rest_deneb_mev_calls]
+  ".."/spec/mev/rest_deneb_mev_calls
 
 from std/sequtils import mapIt
 from eth/async_utils import awaitWithTimeout
@@ -542,30 +542,13 @@ proc makeBeaconBlockForHeadAndSlot*(
     kzg_commitments = Opt.none(KzgCommitments))
 
 proc getBlindedExecutionPayload[
-    EPH: capella.ExecutionPayloadHeader |
+    EPH: deneb_mev.BlindedExecutionPayloadAndBlobsBundle](
-         deneb_mev.BlindedExecutionPayloadAndBlobsBundle](
     node: BeaconNode, payloadBuilderClient: RestClientRef, slot: Slot,
     executionBlockHash: Eth2Digest, pubkey: ValidatorPubKey):
     Future[BlindedBlockResult[EPH]] {.async: (raises: [CancelledError, RestError]).} =
   # Not ideal to use `when` where instead of splitting into separate functions,
   # but Nim doesn't overload on generic EPH type parameter.
-  when EPH is capella.ExecutionPayloadHeader:
+  when EPH is deneb_mev.BlindedExecutionPayloadAndBlobsBundle:
-    let
-      response = awaitWithTimeout(
-        payloadBuilderClient.getHeaderCapella(
-          slot, executionBlockHash, pubkey),
-        BUILDER_PROPOSAL_DELAY_TOLERANCE):
-          return err "Timeout obtaining Capella blinded header from builder"
-
-      res = decodeBytes(
-        GetHeaderResponseCapella, response.data, response.contentType)
-
-      blindedHeader = res.valueOr:
-        return err(
-          "Unable to decode Capella blinded header: " & $res.error &
-            " with HTTP status " & $response.status & ", Content-Type " &
-            $response.contentType & " and content " & $response.data)
-  elif EPH is deneb_mev.BlindedExecutionPayloadAndBlobsBundle:
     let
       response = awaitWithTimeout(
         payloadBuilderClient.getHeaderDeneb(

beacon_chain/validators/message_router_mev.nim

@@ -14,7 +14,6 @@ import ../beacon_node
 
 from eth/async_utils import awaitWithTimeout
 from ../spec/datatypes/bellatrix import SignedBeaconBlock
-from ../spec/mev/rest_capella_mev_calls import submitBlindedBlock
 from ../spec/mev/rest_deneb_mev_calls import submitBlindedBlock
 
 const
@@ -44,9 +43,7 @@ macro copyFields*(
 
 proc unblindAndRouteBlockMEV*(
     node: BeaconNode, payloadBuilderRestClient: RestClientRef,
-    blindedBlock:
+    blindedBlock: deneb_mev.SignedBlindedBeaconBlock):
-      capella_mev.SignedBlindedBeaconBlock |
-      deneb_mev.SignedBlindedBeaconBlock):
     Future[Result[Opt[BlockRef], string]] {.async: (raises: [CancelledError]).} =
   const consensusFork = typeof(blindedBlock).kind
 
@@ -79,28 +76,16 @@ proc unblindAndRouteBlockMEV*(
     return err("submitBlindedBlock failed with HTTP error code " &
       $response.status & ": " & $shortLog(blindedBlock))
 
-  when consensusFork >= ConsensusFork.Deneb:
+  let
-    let
+    res = decodeBytes(
-      res = decodeBytes(
+      SubmitBlindedBlockResponseDeneb, response.data, response.contentType)
-        SubmitBlindedBlockResponseDeneb, response.data, response.contentType)
 
-      bundle = res.valueOr:
+    bundle = res.valueOr:
-        return err("Could not decode Deneb blinded block: " & $res.error &
+      return err("Could not decode " & $consensusFork & " blinded block: " & $res.error &
-          " with HTTP status " & $response.status & ", Content-Type " &
+        " with HTTP status " & $response.status & ", Content-Type " &
-          $response.contentType & " and content " & $response.data)
+        $response.contentType & " and content " & $response.data)
 
-    template execution_payload: untyped = bundle.data.execution_payload
+  template execution_payload: untyped = bundle.data.execution_payload
-  else:
-    let
-      res = decodeBytes(
-        SubmitBlindedBlockResponseCapella, response.data, response.contentType)
-
-      bundle = res.valueOr:
-        return err("Could not decode Capella blinded block: " & $res.error &
-          " with HTTP status " & $response.status & ", Content-Type " &
-          $response.contentType & " and content " & $response.data)
-
-    template execution_payload: untyped = bundle.data
 
   if hash_tree_root(blindedBlock.message.body.execution_payload_header) !=
       hash_tree_root(execution_payload):