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caches vote-state de-serialized from vote accounts (#13795)

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Gossip and other places repeatedly de-serialize vote-state stored in
vote accounts. Ideally the first de-serialization should cache the
result.

This commit adds new VoteAccount type which lazily de-serializes
VoteState from Account data and caches the result internally.

Serialize and Deserialize traits are manually implemented to match
existing code. So, despite changes to frozen_abi, this commit should be
backward compatible.
This commit is contained in:
behzad nouri
2020-11-30 17:18:33 +00:00
committed by GitHub
parent 6203d1c94c
commit e1793e5a13
18 changed files with 433 additions and 198 deletions
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4
core/src/rpc.rs
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@ -537,13 +537,15 @@ impl JsonRpcRequestProcessor {
let epoch_vote_accounts = bank
.epoch_vote_accounts(bank.get_epoch_and_slot_index(bank.slot()).0)
.ok_or_else(Error::invalid_request)?;
let default_vote_state = VoteState::default();
let (current_vote_accounts, delinquent_vote_accounts): (
Vec<RpcVoteAccountInfo>,
Vec<RpcVoteAccountInfo>,
) = vote_accounts
.iter()
.map(|(pubkey, (activated_stake, account))| {
let vote_state = VoteState::from(&account).unwrap_or_default();
let vote_state = account.vote_state();
let vote_state = vote_state.as_ref().unwrap_or(&default_vote_state);
let last_vote = if let Some(vote) = vote_state.votes.iter().last() {
vote.slot
} else {