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Persistent -> period, process_shard_receipt: add _proofs

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vbuterin 2019-08-24 13:54:48 +02:00 committed by GitHub
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specs/core/1_beacon-chain-misc.md
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@ -33,7 +33,7 @@
| Name | Value | Unit | Duration
| - | - | - | - |
| `MAX_SHARD_RECEIPT_PROOFS` | `2**0` (= 1) | - | - |
| `PERSISTENT_COMMITTEE_ROOT_LENGTH` | `2**8` (= 256) | periods | ~9 months |
| `PERIOD_COMMITTEE_ROOT_LENGTH` | `2**8` (= 256) | periods | ~9 months |
| `MICRO_REWARD` | `Gwei(2**0)` (=1) | Gwei | - |
## Containers
@ -189,12 +189,12 @@ Add the following fields to the end of the specified container objects.
```python
class BeaconState(Container):
# Persistent committees
persistent_committee_roots: Vector[Hash, PERSISTENT_COMMITTEE_ROOT_LENGTH]
# Period committees
period_committee_roots: Vector[Hash, PERIOD_COMMITTEE_ROOT_LENGTH]
next_shard_receipt_period: Vector[uint64, SHARD_COUNT]
```
`persistent_committee_roots` values are initialized to `Bytes32()` (empty bytes value).
`period_committee_roots` values are initialized to `Bytes32()` (empty bytes value).
`next_shard_receipt_period` values are initialized to `PHASE_1_FORK_SLOT // SLOTS_PER_EPOCH // EPOCHS_PER_SHARD_PERIOD`.
#### `BeaconBlockBody`
@ -208,15 +208,15 @@ class BeaconBlockBody(Container):
### Persistent committees
Run `update_persistent_committee` immediately before `process_final_updates`:
Run `update_period_committee` immediately before `process_final_updates`:
```python
# begin insert @update_persistent_committee
update_persistent_committee(state)
# end insert @update_persistent_committee
def update_persistent_committee(state: BeaconState) -> None:
# begin insert @update_period_committee
update_period_committee(state)
# end insert @update_period_committee
def update_period_committee(state: BeaconState) -> None:
"""
Updates persistent committee roots at boundary blocks.
Updates period committee roots at boundary blocks.
"""
if (get_current_epoch(state) + 1) % EPOCHS_PER_SHARD_PERIOD == 0:
period = (get_current_epoch(state) + 1) // EPOCHS_PER_SHARD_PERIOD
@ -227,7 +227,7 @@ def update_persistent_committee(state: BeaconState) -> None:
)
for shard in range(SHARD_COUNT)
])
state.persistent_committee_roots[period % PERSISTENT_COMMITTEE_ROOT_LENGTH] = hash_tree_root(committees)
state.period_committee_roots[period % PERIOD_COMMITTEE_ROOT_LENGTH] = hash_tree_root(committees)
```
### Shard receipt processing
@ -235,7 +235,7 @@ def update_persistent_committee(state: BeaconState) -> None:
Run `process_shard_receipt_proof` on each `ShardReceiptProof` during block processing.
```python
# begin insert @process_shard_receipts
# begin insert @process_shard_receipt_proofs
(body.shard_receipt_proofs, process_shard_receipt_proof),
# end insert @process_shard_receipts
# end insert @process_shard_receipt_proofs
```