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[validator-rotation] fix corner case in change_validators, add what to do with special ojects in active state

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Danny Ryan 2018-10-01 21:02:46 -05:00
parent 11d6daf68c
commit b3d258e54e
1 changed files with 5 additions and 4 deletions
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9
specs/casper_sharding_v2.1.md
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@ -417,7 +417,7 @@ For each one of these attestations [TODO]:
* Derive a group public key by adding the public keys of all of the attesters in `attestation_indices` for whom the corresponding bit in `attester_bitfield` (the ith bit is `(attester_bitfield[i // 8] >> (7 - (i %8))) % 2`) equals 1
* Verify that `aggregate_sig` verifies using the group pubkey generated and `hash(slot.to_bytes(8, 'big') + parent_hashes + shard_id + shard_block_hash + justified_slot.to_bytes(8, 'big'))` as the message.
Extend the list of `AttestationRecord` objects in the `active_state`, ordering the new additions in the same order as they came in the block.
Extend the list of `AttestationRecord` objects in the `active_state` with those included in the block, ordering the new additions in the same order as they came in the block. Similarly extend the list of `SpecialObject` objects in the `active_state` with those included in the block.
Verify that the `parent.slot_number % len(get_shards_and_committees_for_slot(crystallized_state, parent.slot_number)[0].committee)`'th attester in `get_shards_and_committees_for_slot(crystallized_state, parent.slot_number)[0]`is part of the first (ie. item 0 in the array) `AttestationRecord` object; this attester can be considered to be the proposer of the parent block. In general, when a block is produced, it is broadcasted at the network layer along with the attestation from its proposer.
@ -509,10 +509,11 @@ def change_validators(validators):
if total_changed >= max_allowable_change:
break
cp = current_slot // WITHDRAWAL_PERIOD
total_penalties = (
crystallized_state.penalized_in_wp[current_slot // WITHDRAWAL_PERIOD] +
crystallized_state.penalized_in_wp[current_slot // WITHDRAWAL_PERIOD - 1] +
crystallized_state.penalized_in_wp[current_slot // WITHDRAWAL_PERIOD - 2]
(crystallized_state.penalized_in_wp[cp]) +
(crystallized_state.penalized_in_wp[cp - 1] if cp >= 1 else 0) +
(crystallized_state.penalized_in_wp[cp - 2] if cp >= 2 else 0)
)
for i in range(len(validators)):
if validators[i].status in (3, 128) and current_slot >= validators[i].exit_slot + WITHDRAWAL_PERIOD: