2019-08-28 12:07:00 +00:00
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# beacon_chain
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Licensed and distributed under either of
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2019-11-25 15:30:02 +00:00
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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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2019-08-28 12:07:00 +00:00
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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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# Mocking attestations
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# ---------------------------------------------------------------
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import
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# Standard library
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sets,
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2020-08-15 17:33:58 +00:00
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# Status
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chronicles,
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2019-08-28 12:07:00 +00:00
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# Specs
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2020-03-19 23:48:03 +00:00
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../../beacon_chain/spec/[datatypes, beaconstate, helpers, validator, crypto,
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2020-07-07 23:02:14 +00:00
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signatures, state_transition, presets],
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2019-08-28 12:07:00 +00:00
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# Internals
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2020-06-23 13:54:24 +00:00
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../../beacon_chain/[ssz, extras],
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2019-08-28 12:07:00 +00:00
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# Mocking procs
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./mock_blocks,
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./mock_validator_keys
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proc mockAttestationData(
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state: BeaconState,
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slot: Slot,
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index: uint64): AttestationData =
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doAssert state.slot >= slot
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if slot == state.slot:
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2019-12-16 18:08:50 +00:00
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result.beacon_block_root = mockBlockForNextSlot(state).message.parent_root
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2019-08-28 12:07:00 +00:00
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else:
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result.beacon_block_root = get_block_root_at_slot(state, slot)
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initial 0.9.0 spec sync (#509)
* rename compute_epoch_of_slot(...) to compute_epoch_at_slot(...)
* remove some unnecessary imports; remove some crosslink-related code and tests; complete renaming of compute_epoch_of_slot(...) to compute_epoch_at_slot(...)
* rm more transfer-related code and tests; rm more unnecessary strutils imports
* rm remaining unused imports
* remove useless get_empty_per_epoch_cache(...)/compute_start_slot_of_epoch(...) calls
* rename compute_start_slot_of_epoch(...) to compute_start_slot_at_epoch(...)
* rename ACTIVATION_EXIT_DELAY to MAX_SEED_LOOKAHEAD
* update domain types to 0.9.0
* mark AttesterSlashing, IndexedAttestation, AttestationDataAndCustodyBit, DepositData, BeaconBlockHeader, Fork, integer_squareroot(...), and process_voluntary_exit(...) as 0.9.0
* mark increase_balance(...), decrease_balance(...), get_block_root(...), CheckPoint, Deposit, PendingAttestation, HistoricalBatch, is_active_validator(...), and is_slashable_attestation_data(...) as 0.9.0
* mark compute_activation_exit_epoch(...), bls_verify(...), Validator, get_active_validator_indices(...), get_current_epoch(...), get_total_active_balance(...), and get_previous_epoch(...) as 0.9.0
* mark get_block_root_at_slot(...), ProposerSlashing, get_domain(...), VoluntaryExit, mainnet preset Gwei values, minimal preset max operations, process_block_header(...), and is_slashable_validator(...) as 0.9.0
* mark makeWithdrawalCredentials(...), get_validator_churn_limit(...), get_total_balance(...), is_valid_indexed_attestation(...), bls_aggregate_pubkeys(...), initial genesis value/constants, Attestation, get_randao_mix(...), mainnet preset max operations per block constants, minimal preset Gwei values and time parameters, process_eth1_data(...), get_shuffled_seq(...), compute_committee(...), and process_slots(...) as 0.9.0; partially update get_indexed_attestation(...) to 0.9.0 by removing crosslink refs and associated tests
* mark initiate_validator_exit(...), process_registry_updates(...), BeaconBlock, Eth1Data, compute_domain(...), process_randao(...), process_attester_slashing(...), get_base_reward(...), and process_slot(...) as 0.9.0
2019-10-30 19:41:19 +00:00
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let current_epoch_start_slot = state.get_current_epoch().compute_start_slot_at_epoch()
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let epoch_boundary_root = block:
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if slot < current_epoch_start_slot:
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get_block_root(state, get_previous_epoch(state))
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elif slot == current_epoch_start_slot:
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result.beacon_block_root
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else:
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get_block_root(state, get_current_epoch(state))
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if slot < current_epoch_start_slot:
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result.source = state.previous_justified_checkpoint
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else:
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result.source = state.current_justified_checkpoint
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initial 0.9.0 spec sync (#509)
* rename compute_epoch_of_slot(...) to compute_epoch_at_slot(...)
* remove some unnecessary imports; remove some crosslink-related code and tests; complete renaming of compute_epoch_of_slot(...) to compute_epoch_at_slot(...)
* rm more transfer-related code and tests; rm more unnecessary strutils imports
* rm remaining unused imports
* remove useless get_empty_per_epoch_cache(...)/compute_start_slot_of_epoch(...) calls
* rename compute_start_slot_of_epoch(...) to compute_start_slot_at_epoch(...)
* rename ACTIVATION_EXIT_DELAY to MAX_SEED_LOOKAHEAD
* update domain types to 0.9.0
* mark AttesterSlashing, IndexedAttestation, AttestationDataAndCustodyBit, DepositData, BeaconBlockHeader, Fork, integer_squareroot(...), and process_voluntary_exit(...) as 0.9.0
* mark increase_balance(...), decrease_balance(...), get_block_root(...), CheckPoint, Deposit, PendingAttestation, HistoricalBatch, is_active_validator(...), and is_slashable_attestation_data(...) as 0.9.0
* mark compute_activation_exit_epoch(...), bls_verify(...), Validator, get_active_validator_indices(...), get_current_epoch(...), get_total_active_balance(...), and get_previous_epoch(...) as 0.9.0
* mark get_block_root_at_slot(...), ProposerSlashing, get_domain(...), VoluntaryExit, mainnet preset Gwei values, minimal preset max operations, process_block_header(...), and is_slashable_validator(...) as 0.9.0
* mark makeWithdrawalCredentials(...), get_validator_churn_limit(...), get_total_balance(...), is_valid_indexed_attestation(...), bls_aggregate_pubkeys(...), initial genesis value/constants, Attestation, get_randao_mix(...), mainnet preset max operations per block constants, minimal preset Gwei values and time parameters, process_eth1_data(...), get_shuffled_seq(...), compute_committee(...), and process_slots(...) as 0.9.0; partially update get_indexed_attestation(...) to 0.9.0 by removing crosslink refs and associated tests
* mark initiate_validator_exit(...), process_registry_updates(...), BeaconBlock, Eth1Data, compute_domain(...), process_randao(...), process_attester_slashing(...), get_base_reward(...), and process_slot(...) as 0.9.0
2019-10-30 19:41:19 +00:00
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let target_epoch = compute_epoch_at_slot(slot)
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2019-11-14 18:09:18 +00:00
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result.slot = slot
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result.index = index
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2019-11-07 21:13:27 +00:00
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2019-08-28 12:07:00 +00:00
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result.target = Checkpoint(
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epoch: target_epoch, root: epoch_boundary_root
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)
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proc signMockAttestation*(state: BeaconState, attestation: var Attestation) =
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var cache = StateCache()
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let participants = get_attesting_indices(
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state,
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attestation.data,
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attestation.aggregation_bits,
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cache
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)
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2020-08-15 17:33:58 +00:00
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var agg {.noInit.}: AggregateSignature
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var first_iter = true # Can't do while loop on hashset
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for validator_index in participants:
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let sig = get_attestation_signature(
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2020-03-30 11:31:44 +00:00
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state.fork, state.genesis_validators_root, attestation.data,
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MockPrivKeys[validator_index]
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)
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if first_iter:
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agg.init(sig)
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first_iter = false
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else:
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agg.aggregate(sig)
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if first_iter != true:
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attestation.signature = agg.finish()
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# Otherwise no participants so zero sig
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proc mockAttestationImpl(
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state: BeaconState,
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slot: Slot,
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flags: UpdateFlags): Attestation =
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2020-07-15 10:44:18 +00:00
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var cache = StateCache()
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let
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beacon_committee = get_beacon_committee(
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state,
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2019-11-08 00:12:24 +00:00
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result.data.slot,
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2020-04-15 09:01:36 +00:00
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result.data.index.CommitteeIndex,
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cache
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)
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2019-11-13 11:30:11 +00:00
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committee_size = beacon_committee.len
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2019-11-14 18:48:12 +00:00
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result.data = mockAttestationData(state, slot, 0)
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result.aggregation_bits = init(CommitteeValidatorsBits, committee_size)
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# fillAggregateAttestation
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for i in 0 ..< beacon_committee.len:
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result.aggregation_bits[i] = true
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2020-03-05 12:52:10 +00:00
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if skipBlsValidation notin flags:
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signMockAttestation(state, result)
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proc mockAttestation*(
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state: BeaconState,
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flags: UpdateFlags = {}): Attestation {.inline.}=
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mockAttestationImpl(state, state.slot, flags)
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proc mockAttestation*(
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state: BeaconState,
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slot: Slot,
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flags: UpdateFlags = {}): Attestation {.inline.}=
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mockAttestationImpl(state, slot, flags)
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2020-07-02 16:15:27 +00:00
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func fillAggregateAttestation*(state: BeaconState, attestation: var Attestation) =
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var cache = StateCache()
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2019-11-25 06:31:37 +00:00
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let beacon_committee = get_beacon_committee(
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state,
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attestation.data.slot,
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attestation.data.index.CommitteeIndex,
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cache
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)
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2019-11-25 06:31:37 +00:00
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for i in 0 ..< beacon_committee.len:
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attestation.aggregation_bits[i] = true
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2020-04-30 06:44:19 +00:00
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proc add*(state: var HashedBeaconState, attestation: Attestation, slot: Slot) =
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2020-09-07 15:04:33 +00:00
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var
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signedBlock = mockBlockForNextSlot(state.data)
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cache = StateCache()
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signedBlock.message.slot = slot
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signedBlock.message.body.attestations.add attestation
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doAssert process_slots(state, slot, cache)
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2020-04-30 06:44:19 +00:00
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signMockBlock(state.data, signedBlock)
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2020-07-07 23:02:14 +00:00
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let success = state_transition(
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2020-11-12 19:24:07 +00:00
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defaultRuntimePreset, state, signedBlock, cache,
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2020-07-07 23:02:14 +00:00
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flags = {skipStateRootValidation}, noRollback)
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doAssert success
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