60 lines
2.3 KiB
Nim
60 lines
2.3 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2021 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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import
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options,
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# Specs
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../../beacon_chain/spec/datatypes/phase0,
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../../beacon_chain/spec/[helpers, signatures, validator],
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# Mock helpers
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./mock_validator_keys
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# Routines for mocking blocks
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# ---------------------------------------------------------------
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proc signMockBlockImpl(
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state: phase0.BeaconState,
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signedBlock: var phase0.SignedBeaconBlock
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) =
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let block_slot = signedBlock.message.slot
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doAssert state.slot <= block_slot
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let privkey = MockPrivKeys[signedBlock.message.proposer_index]
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signedBlock.message.body.randao_reveal = get_epoch_signature(
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state.fork, state.genesis_validators_root, block_slot.compute_epoch_at_slot,
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privkey).toValidatorSig()
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signedBlock.root = hash_tree_root(signedBlock.message)
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signedBlock.signature = get_block_signature(
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state.fork, state.genesis_validators_root, block_slot,
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signedBlock.root, privkey).toValidatorSig()
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proc signMockBlock*(state: phase0.BeaconState, signedBlock: var phase0.SignedBeaconBlock) =
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signMockBlockImpl(state, signedBlock)
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proc mockBlock(
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state: phase0.BeaconState,
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slot: Slot): phase0.SignedBeaconBlock =
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## TODO don't do this gradual construction, for exception safety
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## Mock a BeaconBlock for the specific slot
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var emptyCache = StateCache()
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let proposer_index = get_beacon_proposer_index(state, emptyCache)
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result.message.slot = slot
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result.message.proposer_index = proposer_index.get.uint64
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result.message.body.eth1_data.deposit_count = state.eth1_deposit_index
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var previous_block_header = state.latest_block_header
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if previous_block_header.state_root == ZERO_HASH:
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previous_block_header.state_root = state.hash_tree_root()
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result.message.parent_root = previous_block_header.hash_tree_root()
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signMockBlock(state, result)
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proc mockBlockForNextSlot*(state: phase0.BeaconState): phase0.SignedBeaconBlock =
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mockBlock(state, state.slot + 1)
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