85 lines
3.1 KiB
Nim
85 lines
3.1 KiB
Nim
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# beacon_chain
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# Copyright (c) 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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{.push raises: [Defect].}
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import
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tables,
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stew/[assign2, endians2, io2, objects, results],
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serialization, chronicles,
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eth/db/[kvstore, kvstore_sqlite3],
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./spec/[crypto, datatypes, digest],
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./ssz/[ssz_serialization, merkleization],
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filepath
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type
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# https://github.com/ethereum/eth2.0-specs/blob/v1.0.1/specs/phase0/beacon-chain.md#beaconstate
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# Memory-representation-equivalent to a v1.0.1 BeaconState for in-place SSZ reading and writing
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BeaconStateNoImmutableValidators* = object
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# Versioning
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genesis_time*: uint64
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genesis_validators_root*: Eth2Digest
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slot*: Slot
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fork*: Fork
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# History
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latest_block_header*: BeaconBlockHeader ##\
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## `latest_block_header.state_root == ZERO_HASH` temporarily
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block_roots*: HashArray[Limit SLOTS_PER_HISTORICAL_ROOT, Eth2Digest] ##\
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## Needed to process attestations, older to newer
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state_roots*: HashArray[Limit SLOTS_PER_HISTORICAL_ROOT, Eth2Digest]
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historical_roots*: HashList[Eth2Digest, Limit HISTORICAL_ROOTS_LIMIT]
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# Eth1
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eth1_data*: Eth1Data
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eth1_data_votes*:
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HashList[Eth1Data, Limit(EPOCHS_PER_ETH1_VOTING_PERIOD * SLOTS_PER_EPOCH)]
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eth1_deposit_index*: uint64
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# Registry
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validators*: HashList[ValidatorStatus, Limit VALIDATOR_REGISTRY_LIMIT]
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balances*: HashList[uint64, Limit VALIDATOR_REGISTRY_LIMIT]
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# Randomness
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randao_mixes*: HashArray[Limit EPOCHS_PER_HISTORICAL_VECTOR, Eth2Digest]
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# Slashings
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slashings*: HashArray[Limit EPOCHS_PER_SLASHINGS_VECTOR, uint64] ##\
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## Per-epoch sums of slashed effective balances
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# Attestations
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previous_epoch_attestations*:
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HashList[PendingAttestation, Limit(MAX_ATTESTATIONS * SLOTS_PER_EPOCH)]
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current_epoch_attestations*:
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HashList[PendingAttestation, Limit(MAX_ATTESTATIONS * SLOTS_PER_EPOCH)]
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# Finality
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justification_bits*: uint8 ##\
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## Bit set for every recent justified epoch
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## Model a Bitvector[4] as a one-byte uint, which should remain consistent
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## with ssz/hashing.
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previous_justified_checkpoint*: Checkpoint ##\
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## Previous epoch snapshot
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current_justified_checkpoint*: Checkpoint
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finalized_checkpoint*: Checkpoint
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static:
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# Each of these pairs of types has ABI-compatible memory representations, so
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# that the SSZ serialization can read and write directly from an object with
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# only mutable portions of BeaconState into a full BeaconState without using
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# any extra copies.
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doAssert sizeof(Validator) == sizeof(ValidatorStatus)
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doAssert sizeof(BeaconState) == sizeof(BeaconStateNoImmutableValidators)
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proc loadImmutableValidators*(dbSeq: var auto): seq[ImmutableValidatorData] =
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for i in 0 ..< dbSeq.len:
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result.add dbSeq.get(i)
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