98 lines
3.8 KiB
Nim
98 lines
3.8 KiB
Nim
# beacon_chain
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# Copyright (c) 2021-2022 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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when (NimMajor, NimMinor) < (1, 4):
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{.push raises: [Defect].}
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else:
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{.push raises: [].}
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import chronicles
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import ../beacon_node,
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./rest_utils
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logScope: topics = "rest_light_client"
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proc installLightClientApiHandlers*(router: var RestRouter, node: BeaconNode) =
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# https://github.com/ethereum/beacon-APIs/pull/181
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router.api(MethodGet,
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"/eth/v0/beacon/light_client/bootstrap/{block_root}") do (
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block_root: Eth2Digest) -> RestApiResponse:
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doAssert node.dag.lcDataStore.serve
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let vroot = block:
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if block_root.isErr():
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return RestApiResponse.jsonError(Http400, InvalidBlockRootValueError,
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$block_root.error())
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block_root.get()
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let bootstrap = node.dag.getLightClientBootstrap(vroot)
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if bootstrap.isOk:
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return RestApiResponse.jsonResponse(bootstrap)
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else:
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return RestApiResponse.jsonError(Http404, LCBootstrapUnavailable)
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# https://github.com/ethereum/beacon-APIs/pull/181
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router.api(MethodGet,
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"/eth/v0/beacon/light_client/updates") do (
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start_period: Option[SyncCommitteePeriod], count: Option[uint64]
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) -> RestApiResponse:
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doAssert node.dag.lcDataStore.serve
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let vstart = block:
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if start_period.isNone():
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return RestApiResponse.jsonError(Http400, MissingStartPeriodValueError)
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let rstart = start_period.get()
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if rstart.isErr():
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return RestApiResponse.jsonError(Http400, InvalidSyncPeriodError,
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$rstart.error())
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rstart.get()
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let vcount = block:
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if count.isNone():
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return RestApiResponse.jsonError(Http400, MissingCountValueError)
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let rcount = count.get()
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if rcount.isErr():
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return RestApiResponse.jsonError(Http400, InvalidCountError,
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$rcount.error())
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rcount.get()
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let
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headPeriod = node.dag.head.slot.sync_committee_period
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# Limit number of updates in response
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maxSupportedCount =
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if vstart > headPeriod:
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0'u64
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else:
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min(headPeriod + 1 - vstart, MAX_REQUEST_LIGHT_CLIENT_UPDATES)
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numPeriods = min(vcount, maxSupportedCount)
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onePastPeriod = vstart + numPeriods
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var updates = newSeqOfCap[LightClientUpdate](numPeriods)
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for period in vstart..<onePastPeriod:
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let update = node.dag.getLightClientUpdateForPeriod(period)
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if update.isSome:
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updates.add update.get
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return RestApiResponse.jsonResponse(updates)
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# https://github.com/ethereum/beacon-APIs/pull/181
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router.api(MethodGet,
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"/eth/v0/beacon/light_client/finality_update") do (
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) -> RestApiResponse:
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doAssert node.dag.lcDataStore.serve
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let finality_update = node.dag.getLightClientFinalityUpdate()
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if finality_update.isSome:
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return RestApiResponse.jsonResponse(finality_update)
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else:
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return RestApiResponse.jsonError(Http404, LCFinUpdateUnavailable)
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# https://github.com/ethereum/beacon-APIs/pull/181
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router.api(MethodGet,
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"/eth/v0/beacon/light_client/optimistic_update") do (
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) -> RestApiResponse:
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doAssert node.dag.lcDataStore.serve
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let optimistic_update = node.dag.getLightClientOptimisticUpdate()
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if optimistic_update.isSome:
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return RestApiResponse.jsonResponse(optimistic_update)
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else:
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return RestApiResponse.jsonError(Http404, LCOptUpdateUnavailable)
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