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Add a cache for public keys to BeaconState

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This allows for a fast lookup of "is this public key already in the
validator registry".
This commit is contained in:
Paul Hauner
2019-03-13 16:40:28 +11:00
parent bfa2e71b46
commit 6cd3c4bd1a
8 changed files with 109 additions and 13 deletions
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9
eth2/state_processing/src/per_block_processing.rs
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@@ -373,19 +373,20 @@ pub fn process_deposits(
.map_err(|e| e.into_with_index(i))
})?;
let public_key_to_index_hashmap = build_public_key_hashmap(&state);
// Check `state.deposit_index` and update the state in series.
for (i, deposit) in deposits.iter().enumerate() {
verify_deposit_index(state, deposit).map_err(|e| e.into_with_index(i))?;
// Ensure the state's pubkey cache is fully up-to-date, it will be used to check to see if the
// depositing validator already exists in the registry.
state.update_pubkey_cache()?;
// Get an `Option<u64>` where `u64` is the validator index if this deposit public key
// already exists in the beacon_state.
//
// This function also verifies the withdrawal credentials.
let validator_index =
get_existing_validator_index(state, deposit, &public_key_to_index_hashmap)
.map_err(|e| e.into_with_index(i))?;
get_existing_validator_index(state, deposit).map_err(|e| e.into_with_index(i))?;
let deposit_data = &deposit.deposit_data;
let deposit_input = &deposit.deposit_data.deposit_input;