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online countdown fixes

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protolambda 2020-01-06 00:44:22 +01:00
parent 9c07e26a4d
commit 68d93f945c
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2 changed files with 6 additions and 7 deletions
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9
specs/core/1_beacon-chain.md
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@ -88,6 +88,7 @@ We define the following Python custom types for type hinting and readability:
| Name | SSZ equivalent | Description |
| - | - | - |
| `Shard` | `uint64` | a shard number |
| `OnlineEpochs` | `uint8` | online countdown epochs |
## Configuration
@ -99,7 +100,7 @@ Configuration is not namespaced. Instead it is strictly an extension;
| Name | Value | Unit | Duration |
| - | - | - | - |
| `MAX_SHARDS` | `2**10` (= 1024) |
| `ONLINE_PERIOD` | `Epoch(2**3)` (= 8) | epochs | ~51 min |
| `ONLINE_PERIOD` | `OnlineEpochs(2**3)` (= 8) | online epochs | ~51 min |
| `LIGHT_CLIENT_COMMITTEE_SIZE` | `2**7` (= 128) |
| `LIGHT_CLIENT_COMMITTEE_PERIOD` | `Epoch(2**8)` (= 256) | epochs | ~27 hours |
| `SHARD_COMMITTEE_PERIOD` | `Epoch(2**8)` (= 256) | epochs | ~27 hours |
@ -281,7 +282,7 @@ class BeaconState(Container):
finalized_checkpoint: Checkpoint
# Phase 1
shard_states: List[ShardState, MAX_SHARDS]
online_countdown: ByteList[VALIDATOR_REGISTRY_LIMIT]
online_countdown: List[OnlineEpochs, VALIDATOR_REGISTRY_LIMIT] # not a raw byte array, considered its large size.
current_light_committee: CompactCommittee
next_light_committee: CompactCommittee
# Custody game
@ -515,7 +516,7 @@ def get_shard(state: BeaconState, attestation: Attestation) -> Shard:
```python
def get_next_slot_for_shard(state: BeaconState, shard: Shard) -> Slot:
return Slot(state.shard_transitions[shard].slot + 1)
return Slot(state.shard_states[shard].slot + 1)
```
@ -851,7 +852,7 @@ def verify_shard_transition_false_positives(state: BeaconState, block_body: Beac
# Verify that a `shard_transition` in a block is empty if an attestation was not processed for it
for shard in range(get_active_shard_count(state)):
if state.shard_states[shard].slot != state.slot - 1:
assert block_body.shard_transition[shard] == ShardTransition()
assert block_body.shard_transitions[shard] == ShardTransition()
```
#### Light client processing

4
specs/core/1_phase1-fork.md
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@ -107,9 +107,7 @@ def upgrade_to_phase1(pre: phase0.BeaconState) -> BeaconState:
latest_block_root=Root(),
) for i in range(INITIAL_ACTIVE_SHARDS)
),
online_countdown=ByteList[VALIDATOR_REGISTRY_LIMIT](
ONLINE_PERIOD for i in range(len(pre.validators))
),
online_countdown=[ONLINE_PERIOD] * len(pre.validators), # all online
current_light_committee=CompactCommittee(), # computed after state creation
next_light_committee=CompactCommittee(),
# Custody game