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Apply @djrtwo's suggestion

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Hsiao-Wei Wang 2021-01-19 20:44:21 +08:00
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specs/lightclient/sync-protocol.md
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@ -20,7 +20,7 @@
- [Helper functions](#helper-functions)
- [`get_subtree_index`](#get_subtree_index)
- [Light client state updates](#light-client-state-updates)
- [`is_valid_light_client_update`](#is_valid_light_client_update)
- [`validate_light_client_update`](#validate_light_client_update)
- [`apply_light_client_update`](#apply_light_client_update)
- [`process_light_client_update`](#process_light_client_update)
@ -112,10 +112,10 @@ def get_subtree_index(generalized_index: GeneralizedIndex) -> uint64:
A light client maintains its state in a `store` object of type `LightClientStore` and receives `update` objects of type `LightClientUpdate`. Every `update` triggers `process_light_client_update(store, update, current_slot)` where `current_slot` is the current slot based on some local clock.
#### `is_valid_light_client_update`
#### `validate_light_client_update`
```python
def is_valid_light_client_update(snapshot: LightClientSnapshot, update: LightClientUpdate) -> bool:
def validate_light_client_update(snapshot: LightClientSnapshot, update: LightClientUpdate) -> None:
# Verify update slot is larger than snapshot slot
assert update.header.slot > snapshot.header.slot
@ -160,8 +160,6 @@ def is_valid_light_client_update(snapshot: LightClientSnapshot, update: LightCli
domain = compute_domain(DOMAIN_SYNC_COMMITTEE, update.fork_version)
signing_root = compute_signing_root(signed_header, domain)
assert bls.FastAggregateVerify(participant_pubkeys, signing_root, update.sync_committee_signature)
return True
```
#### `apply_light_client_update`
@ -180,8 +178,7 @@ def apply_light_client_update(snapshot: LightClientSnapshot, update: LightClient
```python
def process_light_client_update(store: LightClientStore, update: LightClientUpdate, current_slot: Slot) -> None:
# Validate update
assert is_valid_light_client_update(store.snapshot, update)
validate_light_client_update(store.snapshot, update)
store.valid_updates.append(update)
if (