nimbus-eth2/beacon_chain/spec/forks_light_client.nim

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# 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
./datatypes/[phase0, altair, bellatrix, capella, deneb, electra],
./eth2_merkleization
type
LightClientDataFork* {.pure.} = enum # Append only, used in DB data!
None = 0, # only use non-0 in DB to detect accidentally uninitialized data
Altair = 1,
Capella = 2,
Deneb = 3
ForkyLightClientHeader* =
altair.LightClientHeader |
capella.LightClientHeader |
deneb.LightClientHeader
ForkyLightClientBootstrap* =
altair.LightClientBootstrap |
capella.LightClientBootstrap |
deneb.LightClientBootstrap
ForkyLightClientUpdate* =
altair.LightClientUpdate |
capella.LightClientUpdate |
deneb.LightClientUpdate
ForkyLightClientFinalityUpdate* =
altair.LightClientFinalityUpdate |
capella.LightClientFinalityUpdate |
deneb.LightClientFinalityUpdate
ForkyLightClientOptimisticUpdate* =
altair.LightClientOptimisticUpdate |
capella.LightClientOptimisticUpdate |
deneb.LightClientOptimisticUpdate
SomeForkyLightClientUpdateWithSyncCommittee* =
ForkyLightClientUpdate
SomeForkyLightClientUpdateWithFinality* =
ForkyLightClientUpdate |
ForkyLightClientFinalityUpdate
SomeForkyLightClientUpdate* =
ForkyLightClientUpdate |
ForkyLightClientFinalityUpdate |
ForkyLightClientOptimisticUpdate
SomeForkyLightClientObject* =
ForkyLightClientBootstrap |
SomeForkyLightClientUpdate
ForkyLightClientStore* =
altair.LightClientStore |
capella.LightClientStore |
deneb.LightClientStore
ForkedLightClientHeader* = object
case kind*: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData*: altair.LightClientHeader
of LightClientDataFork.Capella:
capellaData*: capella.LightClientHeader
of LightClientDataFork.Deneb:
denebData*: deneb.LightClientHeader
ForkedLightClientBootstrap* = object
case kind*: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData*: altair.LightClientBootstrap
of LightClientDataFork.Capella:
capellaData*: capella.LightClientBootstrap
of LightClientDataFork.Deneb:
denebData*: deneb.LightClientBootstrap
ForkedLightClientUpdate* = object
case kind*: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData*: altair.LightClientUpdate
of LightClientDataFork.Capella:
capellaData*: capella.LightClientUpdate
of LightClientDataFork.Deneb:
denebData*: deneb.LightClientUpdate
ForkedLightClientFinalityUpdate* = object
case kind*: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData*: altair.LightClientFinalityUpdate
of LightClientDataFork.Capella:
capellaData*: capella.LightClientFinalityUpdate
of LightClientDataFork.Deneb:
denebData*: deneb.LightClientFinalityUpdate
ForkedLightClientOptimisticUpdate* = object
case kind*: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData*: altair.LightClientOptimisticUpdate
of LightClientDataFork.Capella:
capellaData*: capella.LightClientOptimisticUpdate
of LightClientDataFork.Deneb:
denebData*: deneb.LightClientOptimisticUpdate
SomeForkedLightClientUpdateWithSyncCommittee* =
ForkedLightClientUpdate
SomeForkedLightClientUpdateWithFinality* =
ForkedLightClientUpdate |
ForkedLightClientFinalityUpdate
SomeForkedLightClientUpdate* =
ForkedLightClientUpdate |
ForkedLightClientFinalityUpdate |
ForkedLightClientOptimisticUpdate
SomeForkedLightClientObject* =
ForkedLightClientBootstrap |
SomeForkedLightClientUpdate
ForkedLightClientStore* = object
case kind*: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData*: altair.LightClientStore
of LightClientDataFork.Capella:
capellaData*: capella.LightClientStore
of LightClientDataFork.Deneb:
denebData*: deneb.LightClientStore
func lcDataForkAtEpoch*(
cfg: RuntimeConfig, epoch: Epoch): LightClientDataFork =
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
if epoch >= cfg.DENEB_FORK_EPOCH:
LightClientDataFork.Deneb
elif epoch >= cfg.CAPELLA_FORK_EPOCH:
LightClientDataFork.Capella
elif epoch >= cfg.ALTAIR_FORK_EPOCH:
LightClientDataFork.Altair
else:
LightClientDataFork.None
template kind*(
x: typedesc[ # `SomeLightClientObject` doesn't work here (Nim 1.6)
altair.LightClientHeader |
altair.LightClientBootstrap |
altair.LightClientUpdate |
altair.LightClientFinalityUpdate |
altair.LightClientOptimisticUpdate |
altair.LightClientStore]): LightClientDataFork =
LightClientDataFork.Altair
template kind*(
x: typedesc[ # `SomeLightClientObject` doesn't work here (Nim 1.6)
capella.LightClientHeader |
capella.LightClientBootstrap |
capella.LightClientUpdate |
capella.LightClientFinalityUpdate |
capella.LightClientOptimisticUpdate |
capella.LightClientStore]): LightClientDataFork =
LightClientDataFork.Capella
template kind*(
x: typedesc[ # `SomeLightClientObject` doesn't work here (Nim 1.6)
deneb.LightClientHeader |
deneb.LightClientBootstrap |
deneb.LightClientUpdate |
deneb.LightClientFinalityUpdate |
deneb.LightClientOptimisticUpdate |
deneb.LightClientStore]): LightClientDataFork =
LightClientDataFork.Deneb
template LightClientHeader*(kind: static LightClientDataFork): auto =
when kind == LightClientDataFork.Deneb:
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typedesc[deneb.LightClientHeader]
elif kind == LightClientDataFork.Capella:
typedesc[capella.LightClientHeader]
elif kind == LightClientDataFork.Altair:
typedesc[altair.LightClientHeader]
else:
static: raiseAssert "Unreachable"
template LightClientBootstrap*(kind: static LightClientDataFork): auto =
when kind == LightClientDataFork.Deneb:
typedesc[deneb.LightClientBootstrap]
elif kind == LightClientDataFork.Capella:
typedesc[capella.LightClientBootstrap]
elif kind == LightClientDataFork.Altair:
typedesc[altair.LightClientBootstrap]
else:
static: raiseAssert "Unreachable"
template LightClientUpdate*(kind: static LightClientDataFork): auto =
when kind == LightClientDataFork.Deneb:
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typedesc[deneb.LightClientUpdate]
elif kind == LightClientDataFork.Capella:
typedesc[capella.LightClientUpdate]
elif kind == LightClientDataFork.Altair:
typedesc[altair.LightClientUpdate]
else:
static: raiseAssert "Unreachable"
template LightClientFinalityUpdate*(kind: static LightClientDataFork): auto =
when kind == LightClientDataFork.Deneb:
typedesc[deneb.LightClientFinalityUpdate]
elif kind == LightClientDataFork.Capella:
typedesc[capella.LightClientFinalityUpdate]
elif kind == LightClientDataFork.Altair:
typedesc[altair.LightClientFinalityUpdate]
else:
static: raiseAssert "Unreachable"
template LightClientOptimisticUpdate*(kind: static LightClientDataFork): auto =
when kind == LightClientDataFork.Deneb:
typedesc[deneb.LightClientOptimisticUpdate]
elif kind == LightClientDataFork.Capella:
typedesc[capella.LightClientOptimisticUpdate]
elif kind == LightClientDataFork.Altair:
typedesc[altair.LightClientOptimisticUpdate]
else:
static: raiseAssert "Unreachable"
template LightClientStore*(kind: static LightClientDataFork): auto =
when kind == LightClientDataFork.Deneb:
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typedesc[deneb.LightClientStore]
elif kind == LightClientDataFork.Capella:
typedesc[capella.LightClientStore]
elif kind == LightClientDataFork.Altair:
typedesc[altair.LightClientStore]
else:
static: raiseAssert "Unreachable"
template Forky*(
x: typedesc[ForkedLightClientHeader],
kind: static LightClientDataFork): auto =
kind.LightClientHeader
template Forky*(
x: typedesc[ForkedLightClientBootstrap],
kind: static LightClientDataFork): auto =
kind.LightClientBootstrap
template Forky*(
x: typedesc[ForkedLightClientUpdate],
kind: static LightClientDataFork): auto =
kind.LightClientUpdate
template Forky*(
x: typedesc[ForkedLightClientFinalityUpdate],
kind: static LightClientDataFork): auto =
kind.LightClientFinalityUpdate
template Forky*(
x: typedesc[ForkedLightClientOptimisticUpdate],
kind: static LightClientDataFork): auto =
kind.LightClientOptimisticUpdate
template Forky*(
x: typedesc[ForkedLightClientStore],
kind: static LightClientDataFork): auto =
kind.LightClientStore
template Forked*(x: typedesc[ForkyLightClientHeader]): auto =
typedesc[ForkedLightClientHeader]
template Forked*(x: typedesc[ForkyLightClientBootstrap]): auto =
typedesc[ForkedLightClientBootstrap]
template Forked*(x: typedesc[ForkyLightClientUpdate]): auto =
typedesc[ForkedLightClientUpdate]
template Forked*(x: typedesc[ForkyLightClientFinalityUpdate]): auto =
typedesc[ForkedLightClientFinalityUpdate]
template Forked*(x: typedesc[ForkyLightClientOptimisticUpdate]): auto =
typedesc[ForkedLightClientOptimisticUpdate]
template Forked*(x: typedesc[ForkyLightClientStore]): auto =
typedesc[ForkedLightClientStore]
template withAll*(
x: typedesc[LightClientDataFork], body: untyped): untyped =
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
block:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
body
block:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
body
block:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
body
block:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withLcDataFork*(
x: LightClientDataFork, body: untyped): untyped =
case x
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyHeader*(
x: ForkedLightClientHeader, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyHeader: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyHeader: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyHeader: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyBootstrap*(
x: ForkedLightClientBootstrap, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyBootstrap: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyBootstrap: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyBootstrap: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyUpdate*(
x: ForkedLightClientUpdate, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyUpdate: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyUpdate: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyUpdate: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyFinalityUpdate*(
x: ForkedLightClientFinalityUpdate, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyFinalityUpdate: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyFinalityUpdate: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyFinalityUpdate: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyOptimisticUpdate*(
x: ForkedLightClientOptimisticUpdate, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyOptimisticUpdate: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyOptimisticUpdate: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyOptimisticUpdate: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyObject*(
x: SomeForkedLightClientObject, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyObject: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyObject: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyObject: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
template withForkyStore*(
x: ForkedLightClientStore, body: untyped): untyped =
case x.kind
of LightClientDataFork.Deneb:
const lcDataFork {.inject, used.} = LightClientDataFork.Deneb
template forkyStore: untyped {.inject, used.} = x.denebData
body
of LightClientDataFork.Capella:
const lcDataFork {.inject, used.} = LightClientDataFork.Capella
template forkyStore: untyped {.inject, used.} = x.capellaData
body
of LightClientDataFork.Altair:
const lcDataFork {.inject, used.} = LightClientDataFork.Altair
template forkyStore: untyped {.inject, used.} = x.altairData
body
of LightClientDataFork.None:
const lcDataFork {.inject, used.} = LightClientDataFork.None
body
func init*(
x: typedesc[
ForkedLightClientHeader |
SomeForkedLightClientObject |
ForkedLightClientStore],
forkyData:
ForkyLightClientHeader |
SomeForkyLightClientObject |
ForkyLightClientStore): auto =
type ResultType = typeof(forkyData).Forked
static: doAssert ResultType is x
const kind = typeof(forkyData).kind
when kind == LightClientDataFork.Deneb:
ResultType(kind: kind, denebData: forkyData)
elif kind == LightClientDataFork.Capella:
ResultType(kind: kind, capellaData: forkyData)
elif kind == LightClientDataFork.Altair:
ResultType(kind: kind, altairData: forkyData)
else:
static: raiseAssert "Unreachable"
template forky*(
x:
ForkedLightClientHeader |
SomeForkedLightClientObject |
ForkedLightClientStore,
kind: static LightClientDataFork): untyped =
when kind == LightClientDataFork.Deneb:
x.denebData
elif kind == LightClientDataFork.Capella:
x.capellaData
elif kind == LightClientDataFork.Altair:
x.altairData
else:
static: raiseAssert "Unreachable"
func toFull*(
update: SomeForkyLightClientUpdate): auto =
type ResultType = typeof(update).kind.LightClientUpdate
when update is ForkyLightClientUpdate:
static: doAssert update is ResultType
update
elif update is SomeForkyLightClientUpdateWithFinality:
ResultType(
attested_header: update.attested_header,
finalized_header: update.finalized_header,
finality_branch: update.finality_branch,
sync_aggregate: update.sync_aggregate,
signature_slot: update.signature_slot)
else:
ResultType(
attested_header: update.attested_header,
sync_aggregate: update.sync_aggregate,
signature_slot: update.signature_slot)
func toFull*(
update: SomeForkedLightClientUpdate): ForkedLightClientUpdate =
when update is ForkyLightClientUpdate:
update
else:
withForkyObject(update):
when lcDataFork > LightClientDataFork.None:
ForkedLightClientUpdate.init(forkyObject.toFull())
else:
default(ForkedLightClientUpdate)
func toFinality*(
update: SomeForkyLightClientUpdate): auto =
type ResultType = typeof(update).kind.LightClientFinalityUpdate
when update is ForkyLightClientFinalityUpdate:
update
elif update is SomeForkyLightClientUpdateWithFinality:
ResultType(
attested_header: update.attested_header,
finalized_header: update.finalized_header,
finality_branch: update.finality_branch,
sync_aggregate: update.sync_aggregate,
signature_slot: update.signature_slot)
else:
ResultType(
attested_header: update.attested_header,
sync_aggregate: update.sync_aggregate,
signature_slot: update.signature_slot)
func toFinality*(
update: SomeForkedLightClientUpdate): ForkedLightClientFinalityUpdate =
when update is ForkyLightClientFinalityUpdate:
update
else:
withForkyObject(update):
when lcDataFork > LightClientDataFork.None:
ForkedLightClientFinalityUpdate.init(forkyObject.toFinality())
else:
default(ForkedLightClientFinalityUpdate)
func toOptimistic*(
update: SomeForkyLightClientUpdate): auto =
type ResultType = typeof(update).kind.LightClientOptimisticUpdate
when update is ForkyLightClientOptimisticUpdate:
update
else:
ResultType(
attested_header: update.attested_header,
sync_aggregate: update.sync_aggregate,
signature_slot: update.signature_slot)
func toOptimistic*(
update: SomeForkedLightClientUpdate): ForkedLightClientOptimisticUpdate =
when update is ForkyLightClientOptimisticUpdate:
update
else:
withForkyObject(update):
when lcDataFork > LightClientDataFork.None:
ForkedLightClientOptimisticUpdate.init(forkyObject.toOptimistic())
else:
default(ForkedLightClientOptimisticUpdate)
func matches*[A, B: SomeForkyLightClientUpdate](a: A, b: B): bool =
static: doAssert typeof(A).kind == typeof(B).kind
if a.attested_header != b.attested_header:
return false
when a is SomeForkyLightClientUpdateWithSyncCommittee and
b is SomeForkyLightClientUpdateWithSyncCommittee:
if a.next_sync_committee != b.next_sync_committee:
return false
if a.next_sync_committee_branch != b.next_sync_committee_branch:
return false
when a is SomeForkyLightClientUpdateWithFinality and
b is SomeForkyLightClientUpdateWithFinality:
if a.finalized_header != b.finalized_header:
return false
if a.finality_branch != b.finality_branch:
return false
if a.sync_aggregate != b.sync_aggregate:
return false
if a.signature_slot != b.signature_slot:
return false
true
func matches*[A, B: SomeForkedLightClientUpdate](a: A, b: B): bool =
if a.kind != b.kind:
return false
withForkyObject(a):
when lcDataFork > LightClientDataFork.None:
forkyObject.matches(b.forky(lcDataFork))
else:
true
func migrateToDataFork*(
x: var ForkedLightClientHeader,
newKind: static LightClientDataFork) =
if newKind == x.kind:
# Already at correct kind
discard
elif newKind < x.kind:
# Downgrade not supported, re-initialize
x = ForkedLightClientHeader(kind: newKind)
else:
# Upgrade to Altair
when newKind >= LightClientDataFork.Altair:
if x.kind == LightClientDataFork.None:
x = ForkedLightClientHeader(
kind: LightClientDataFork.Altair)
# Upgrade to Capella
when newKind >= LightClientDataFork.Capella:
if x.kind == LightClientDataFork.Altair:
x = ForkedLightClientHeader(
kind: LightClientDataFork.Capella,
capellaData: upgrade_lc_header_to_capella(
x.forky(LightClientDataFork.Altair)))
# Upgrade to Deneb
when newKind >= LightClientDataFork.Deneb:
if x.kind == LightClientDataFork.Capella:
x = ForkedLightClientHeader(
kind: LightClientDataFork.Deneb,
denebData: upgrade_lc_header_to_deneb(
x.forky(LightClientDataFork.Capella)))
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
doAssert x.kind == newKind
func migrateToDataFork*(
x: var ForkedLightClientBootstrap,
newKind: static LightClientDataFork) =
if newKind == x.kind:
# Already at correct kind
discard
elif newKind < x.kind:
# Downgrade not supported, re-initialize
x = ForkedLightClientBootstrap(kind: newKind)
else:
# Upgrade to Altair
when newKind >= LightClientDataFork.Altair:
if x.kind == LightClientDataFork.None:
x = ForkedLightClientBootstrap(
kind: LightClientDataFork.Altair)
# Upgrade to Capella
when newKind >= LightClientDataFork.Capella:
if x.kind == LightClientDataFork.Altair:
x = ForkedLightClientBootstrap(
kind: LightClientDataFork.Capella,
capellaData: upgrade_lc_bootstrap_to_capella(
x.forky(LightClientDataFork.Altair)))
# Upgrade to Deneb
when newKind >= LightClientDataFork.Deneb:
if x.kind == LightClientDataFork.Capella:
x = ForkedLightClientBootstrap(
kind: LightClientDataFork.Deneb,
denebData: upgrade_lc_bootstrap_to_deneb(
x.forky(LightClientDataFork.Capella)))
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
doAssert x.kind == newKind
func migrateToDataFork*(
x: var ForkedLightClientUpdate,
newKind: static LightClientDataFork) =
if newKind == x.kind:
# Already at correct kind
discard
elif newKind < x.kind:
# Downgrade not supported, re-initialize
x = ForkedLightClientUpdate(kind: newKind)
else:
# Upgrade to Altair
when newKind >= LightClientDataFork.Altair:
if x.kind == LightClientDataFork.None:
x = ForkedLightClientUpdate(
kind: LightClientDataFork.Altair)
# Upgrade to Capella
when newKind >= LightClientDataFork.Capella:
if x.kind == LightClientDataFork.Altair:
x = ForkedLightClientUpdate(
kind: LightClientDataFork.Capella,
capellaData: upgrade_lc_update_to_capella(
x.forky(LightClientDataFork.Altair)))
# Upgrade to Deneb
when newKind >= LightClientDataFork.Deneb:
if x.kind == LightClientDataFork.Capella:
x = ForkedLightClientUpdate(
kind: LightClientDataFork.Deneb,
denebData: upgrade_lc_update_to_deneb(
x.forky(LightClientDataFork.Capella)))
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
doAssert x.kind == newKind
func migrateToDataFork*(
x: var ForkedLightClientFinalityUpdate,
newKind: static LightClientDataFork) =
if newKind == x.kind:
# Already at correct kind
discard
elif newKind < x.kind:
# Downgrade not supported, re-initialize
x = ForkedLightClientFinalityUpdate(kind: newKind)
else:
# Upgrade to Altair
when newKind >= LightClientDataFork.Altair:
if x.kind == LightClientDataFork.None:
x = ForkedLightClientFinalityUpdate(
kind: LightClientDataFork.Altair)
# Upgrade to Capella
when newKind >= LightClientDataFork.Capella:
if x.kind == LightClientDataFork.Altair:
x = ForkedLightClientFinalityUpdate(
kind: LightClientDataFork.Capella,
capellaData: upgrade_lc_finality_update_to_capella(
x.forky(LightClientDataFork.Altair)))
# Upgrade to Deneb
when newKind >= LightClientDataFork.Deneb:
if x.kind == LightClientDataFork.Capella:
x = ForkedLightClientFinalityUpdate(
kind: LightClientDataFork.Deneb,
denebData: upgrade_lc_finality_update_to_deneb(
x.forky(LightClientDataFork.Capella)))
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
doAssert x.kind == newKind
func migrateToDataFork*(
x: var ForkedLightClientOptimisticUpdate,
newKind: static LightClientDataFork) =
if newKind == x.kind:
# Already at correct kind
discard
elif newKind < x.kind:
# Downgrade not supported, re-initialize
x = ForkedLightClientOptimisticUpdate(kind: newKind)
else:
# Upgrade to Altair
when newKind >= LightClientDataFork.Altair:
if x.kind == LightClientDataFork.None:
x = ForkedLightClientOptimisticUpdate(
kind: LightClientDataFork.Altair)
# Upgrade to Capella
when newKind >= LightClientDataFork.Capella:
if x.kind == LightClientDataFork.Altair:
x = ForkedLightClientOptimisticUpdate(
kind: LightClientDataFork.Capella,
capellaData: upgrade_lc_optimistic_update_to_capella(
x.forky(LightClientDataFork.Altair)))
# Upgrade to Deneb
when newKind >= LightClientDataFork.Deneb:
if x.kind == LightClientDataFork.Capella:
x = ForkedLightClientOptimisticUpdate(
kind: LightClientDataFork.Deneb,
denebData: upgrade_lc_optimistic_update_to_deneb(
x.forky(LightClientDataFork.Capella)))
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
doAssert x.kind == newKind
func migrateToDataFork*(
x: var ForkedLightClientStore,
newKind: static LightClientDataFork) =
if newKind == x.kind:
# Already at correct kind
discard
elif newKind < x.kind:
# Downgrade not supported, re-initialize
x = ForkedLightClientStore(kind: newKind)
else:
# Upgrade to Altair
when newKind >= LightClientDataFork.Altair:
if x.kind == LightClientDataFork.None:
x = ForkedLightClientStore(
kind: LightClientDataFork.Altair)
# Upgrade to Capella
when newKind >= LightClientDataFork.Capella:
if x.kind == LightClientDataFork.Altair:
x = ForkedLightClientStore(
kind: LightClientDataFork.Capella,
capellaData: upgrade_lc_store_to_capella(
x.forky(LightClientDataFork.Altair)))
# Upgrade to Deneb
when newKind >= LightClientDataFork.Deneb:
if x.kind == LightClientDataFork.Capella:
x = ForkedLightClientStore(
kind: LightClientDataFork.Deneb,
denebData: upgrade_lc_store_to_deneb(
x.forky(LightClientDataFork.Capella)))
static: doAssert LightClientDataFork.high == LightClientDataFork.Deneb
doAssert x.kind == newKind
func migratingToDataFork*[
T:
ForkedLightClientHeader |
SomeForkedLightClientObject |
ForkedLightClientStore](
x: T, newKind: static LightClientDataFork): T =
var upgradedObject = x
upgradedObject.migrateToDataFork(newKind)
upgradedObject
# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/light-client/full-node.md#block_to_light_client_header
func toAltairLightClientHeader(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
phase0.SignedBeaconBlock | phase0.TrustedSignedBeaconBlock |
altair.SignedBeaconBlock | altair.TrustedSignedBeaconBlock |
bellatrix.SignedBeaconBlock | bellatrix.TrustedSignedBeaconBlock
): altair.LightClientHeader =
altair.LightClientHeader(
beacon: blck.message.toBeaconBlockHeader())
# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/capella/light-client/full-node.md#modified-block_to_light_client_header
func toCapellaLightClientHeader(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
phase0.SignedBeaconBlock | phase0.TrustedSignedBeaconBlock |
altair.SignedBeaconBlock | altair.TrustedSignedBeaconBlock |
bellatrix.SignedBeaconBlock | bellatrix.TrustedSignedBeaconBlock
): capella.LightClientHeader =
# Note that during fork transitions, `finalized_header` may still
# point to earlier forks. While Bellatrix blocks also contain an
# `ExecutionPayload` (minus `withdrawals_root`), it was not included
# in the corresponding light client data. To ensure compatibility
# with legacy data going through `upgrade_lc_header_to_capella`,
# leave out execution data.
capella.LightClientHeader(
beacon: blck.message.toBeaconBlockHeader())
func toCapellaLightClientHeader(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
capella.SignedBeaconBlock | capella.TrustedSignedBeaconBlock
): capella.LightClientHeader =
template payload: untyped = blck.message.body.execution_payload
capella.LightClientHeader(
beacon: blck.message.toBeaconBlockHeader(),
execution: capella.ExecutionPayloadHeader(
parent_hash: payload.parent_hash,
fee_recipient: payload.fee_recipient,
state_root: payload.state_root,
receipts_root: payload.receipts_root,
logs_bloom: payload.logs_bloom,
prev_randao: payload.prev_randao,
block_number: payload.block_number,
gas_limit: payload.gas_limit,
gas_used: payload.gas_used,
timestamp: payload.timestamp,
extra_data: payload.extra_data,
base_fee_per_gas: payload.base_fee_per_gas,
block_hash: payload.block_hash,
transactions_root: hash_tree_root(payload.transactions),
withdrawals_root: hash_tree_root(payload.withdrawals)),
execution_branch: blck.message.body.build_proof(
capella.EXECUTION_PAYLOAD_GINDEX).get)
# https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.0/specs/deneb/light-client/full-node.md#modified-block_to_light_client_header
func toDenebLightClientHeader(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
phase0.SignedBeaconBlock | phase0.TrustedSignedBeaconBlock |
altair.SignedBeaconBlock | altair.TrustedSignedBeaconBlock |
bellatrix.SignedBeaconBlock | bellatrix.TrustedSignedBeaconBlock
): deneb.LightClientHeader =
# Note that during fork transitions, `finalized_header` may still
# point to earlier forks. While Bellatrix blocks also contain an
# `ExecutionPayload` (minus `withdrawals_root`), it was not included
# in the corresponding light client data. To ensure compatibility
# with legacy data going through `upgrade_lc_header_to_capella`,
# leave out execution data.
deneb.LightClientHeader(
beacon: blck.message.toBeaconBlockHeader())
func toDenebLightClientHeader(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
capella.SignedBeaconBlock | capella.TrustedSignedBeaconBlock
): deneb.LightClientHeader =
template payload: untyped = blck.message.body.execution_payload
deneb.LightClientHeader(
beacon: blck.message.toBeaconBlockHeader(),
execution: deneb.ExecutionPayloadHeader(
parent_hash: payload.parent_hash,
fee_recipient: payload.fee_recipient,
state_root: payload.state_root,
receipts_root: payload.receipts_root,
logs_bloom: payload.logs_bloom,
prev_randao: payload.prev_randao,
block_number: payload.block_number,
gas_limit: payload.gas_limit,
gas_used: payload.gas_used,
timestamp: payload.timestamp,
extra_data: payload.extra_data,
base_fee_per_gas: payload.base_fee_per_gas,
block_hash: payload.block_hash,
transactions_root: hash_tree_root(payload.transactions),
withdrawals_root: hash_tree_root(payload.withdrawals)),
execution_branch: blck.message.body.build_proof(
capella.EXECUTION_PAYLOAD_GINDEX).get)
func toDenebLightClientHeader(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
deneb.SignedBeaconBlock | deneb.TrustedSignedBeaconBlock
): deneb.LightClientHeader =
template payload: untyped = blck.message.body.execution_payload
deneb.LightClientHeader(
beacon: blck.message.toBeaconBlockHeader(),
execution: deneb.ExecutionPayloadHeader(
parent_hash: payload.parent_hash,
fee_recipient: payload.fee_recipient,
state_root: payload.state_root,
receipts_root: payload.receipts_root,
logs_bloom: payload.logs_bloom,
prev_randao: payload.prev_randao,
block_number: payload.block_number,
gas_limit: payload.gas_limit,
gas_used: payload.gas_used,
timestamp: payload.timestamp,
extra_data: payload.extra_data,
base_fee_per_gas: payload.base_fee_per_gas,
block_hash: payload.block_hash,
transactions_root: hash_tree_root(payload.transactions),
withdrawals_root: hash_tree_root(payload.withdrawals),
blob_gas_used: payload.blob_gas_used,
excess_blob_gas: payload.excess_blob_gas),
execution_branch: blck.message.body.build_proof(
capella.EXECUTION_PAYLOAD_GINDEX).get)
func toLightClientHeader*(
blck: # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
phase0.SignedBeaconBlock | phase0.TrustedSignedBeaconBlock |
altair.SignedBeaconBlock | altair.TrustedSignedBeaconBlock |
bellatrix.SignedBeaconBlock | bellatrix.TrustedSignedBeaconBlock |
capella.SignedBeaconBlock | capella.TrustedSignedBeaconBlock |
deneb.SignedBeaconBlock | deneb.TrustedSignedBeaconBlock |
electra.SignedBeaconBlock | electra.TrustedSignedBeaconBlock,
kind: static LightClientDataFork): auto =
when blck is electra.SignedBeaconBlock or blck is electra.TrustedSignedBeaconBlock:
debugComment "toLightClientHeader electra missing"
default(deneb.LightClientHeader)
elif kind == LightClientDataFork.Deneb:
blck.toDenebLightClientHeader()
elif kind == LightClientDataFork.Capella:
blck.toCapellaLightClientHeader()
elif kind == LightClientDataFork.Altair:
blck.toAltairLightClientHeader()
else:
static: raiseAssert "Unreachable"
import chronicles
func shortLog*[
T:
ForkedLightClientHeader |
SomeForkedLightClientObject |
ForkedLightClientStore](
x: T): auto =
type ResultType = object
case kind: LightClientDataFork
of LightClientDataFork.None:
discard
of LightClientDataFork.Altair:
altairData: typeof(x.altairData.shortLog())
of LightClientDataFork.Capella:
capellaData: typeof(x.capellaData.shortLog())
of LightClientDataFork.Deneb:
denebData: typeof(x.denebData.shortLog())
let xKind = x.kind # Nim 1.6.12: Using `kind: x.kind` inside case is broken
case xKind
of LightClientDataFork.Deneb:
ResultType(kind: xKind, denebData: x.denebData.shortLog())
of LightClientDataFork.Capella:
ResultType(kind: xKind, capellaData: x.capellaData.shortLog())
of LightClientDataFork.Altair:
ResultType(kind: xKind, altairData: x.altairData.shortLog())
of LightClientDataFork.None:
ResultType(kind: xKind)
chronicles.formatIt ForkedLightClientHeader: it.shortLog
chronicles.formatIt SomeForkedLightClientObject: it.shortLog
chronicles.formatIt ForkedLightClientStore: it.shortLog