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wipe queued justified after epoch transition

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Danny Ryan 2019-11-05 11:02:58 -07:00
parent 97d7cf5190
commit e20e11e0b5
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1 changed files with 4 additions and 3 deletions
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specs/core/0_fork-choice.md
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@ -47,7 +47,7 @@ The head block root associated with a `store` is defined as `get_head(store)`. A
| Name | Value | Unit | Duration |
| - | - | :-: | :-: |
| `SAFE_SLOTS_TO_UPDATE_JUSTIFIED` | `9` | slots | 108 seconds |
| `SAFE_SLOTS_TO_UPDATE_JUSTIFIED` | `2**3 (= 8)` | slots | 96 seconds |
### Helpers
@ -174,14 +174,15 @@ def on_tick(store: Store, time: uint64) -> None:
store.time = time
current_slot = get_current_slot(store)
# not a new epoch, return
# Not a new epoch, return
if not (current_slot > previous_slot and current_slot % SLOTS_PER_EPOCH == 0):
return
# if new epoch and there are queued_justified_checkpoints, update if any is better than the best in store
# If new epoch and there are queued_justified_checkpoints, update if any is better than the best in store
if any(store.queued_justified_checkpoints):
best_justified_checkpoint = max(store.queued_justified_checkpoints, key=lambda checkpoint: checkpoint.epoch)
if best_justified_checkpoint.epoch > store.justified_checkpoint.epoch:
store.justified_checkpoint = best_justified_checkpoint
store.queued_justified_checkpoints = []
```
#### `on_block`