use {
crate::stakes::SerdeStakesToStakeFormat,
serde::{Deserialize, Serialize},
solana_clock::Epoch,
solana_pubkey::Pubkey,
solana_vote::vote_account::VoteAccountsHashMap,
std::{collections::HashMap, sync::Arc},
};
pub type NodeIdToVoteAccounts = HashMap<Pubkey, NodeVoteAccounts>;
pub type EpochAuthorizedVoters = HashMap<Pubkey, Pubkey>;
#[cfg_attr(feature = "frozen-abi", derive(AbiExample))]
#[derive(Clone, Serialize, Debug, Deserialize, Default, PartialEq, Eq)]
pub struct NodeVoteAccounts {
pub vote_accounts: Vec<Pubkey>,
pub total_stake: u64,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
#[cfg_attr(feature = "frozen-abi", derive(AbiExample, AbiEnumVisitor))]
#[cfg_attr(feature = "dev-context-only-utils", derive(PartialEq))]
pub enum VersionedEpochStakes {
Current {
stakes: SerdeStakesToStakeFormat,
total_stake: u64,
node_id_to_vote_accounts: Arc<NodeIdToVoteAccounts>,
epoch_authorized_voters: Arc<EpochAuthorizedVoters>,
},
}
impl VersionedEpochStakes {
pub(crate) fn new(stakes: SerdeStakesToStakeFormat, leader_schedule_epoch: Epoch) -> Self {
let epoch_vote_accounts = stakes.vote_accounts();
let (total_stake, node_id_to_vote_accounts, epoch_authorized_voters) =
Self::parse_epoch_vote_accounts(epoch_vote_accounts.as_ref(), leader_schedule_epoch);
Self::Current {
stakes,
total_stake,
node_id_to_vote_accounts: Arc::new(node_id_to_vote_accounts),
epoch_authorized_voters: Arc::new(epoch_authorized_voters),
}
}
#[cfg(feature = "dev-context-only-utils")]
pub fn new_for_tests(
vote_accounts_hash_map: VoteAccountsHashMap,
leader_schedule_epoch: Epoch,
) -> Self {
Self::new(
SerdeStakesToStakeFormat::Account(crate::stakes::Stakes::new_for_tests(
0,
solana_vote::vote_account::VoteAccounts::from(Arc::new(vote_accounts_hash_map)),
im::HashMap::default(),
)),
leader_schedule_epoch,
)
}
pub fn stakes(&self) -> &SerdeStakesToStakeFormat {
match self {
Self::Current { stakes, .. } => stakes,
}
}
pub fn total_stake(&self) -> u64 {
match self {
Self::Current { total_stake, .. } => *total_stake,
}
}
#[cfg(feature = "dev-context-only-utils")]
pub fn set_total_stake(&mut self, total_stake: u64) {
match self {
Self::Current {
total_stake: total_stake_field,
..
} => {
*total_stake_field = total_stake;
}
}
}
pub fn node_id_to_vote_accounts(&self) -> &Arc<NodeIdToVoteAccounts> {
match self {
Self::Current {
node_id_to_vote_accounts,
..
} => node_id_to_vote_accounts,
}
}
pub fn node_id_to_stake(&self, node_id: &Pubkey) -> Option<u64> {
self.node_id_to_vote_accounts()
.get(node_id)
.map(|x| x.total_stake)
}
pub fn epoch_authorized_voters(&self) -> &Arc<EpochAuthorizedVoters> {
match self {
Self::Current {
epoch_authorized_voters,
..
} => epoch_authorized_voters,
}
}
pub fn vote_account_stake(&self, vote_account: &Pubkey) -> u64 {
self.stakes()
.vote_accounts()
.get_delegated_stake(vote_account)
}
fn parse_epoch_vote_accounts(
epoch_vote_accounts: &VoteAccountsHashMap,
leader_schedule_epoch: Epoch,
) -> (u64, NodeIdToVoteAccounts, EpochAuthorizedVoters) {
let mut node_id_to_vote_accounts: NodeIdToVoteAccounts = HashMap::new();
let total_stake = epoch_vote_accounts
.iter()
.map(|(_, (stake, _))| stake)
.sum();
let epoch_authorized_voters = epoch_vote_accounts
.iter()
.filter_map(|(key, (stake, account))| {
let vote_state = account.vote_state_view();
if *stake > 0 {
if let Some(authorized_voter) =
vote_state.get_authorized_voter(leader_schedule_epoch)
{
let node_vote_accounts = node_id_to_vote_accounts
.entry(*vote_state.node_pubkey())
.or_default();
node_vote_accounts.total_stake += stake;
node_vote_accounts.vote_accounts.push(*key);
Some((*key, *authorized_voter))
} else {
None
}
} else {
None
}
})
.collect();
(
total_stake,
node_id_to_vote_accounts,
epoch_authorized_voters,
)
}
}
#[cfg(test)]
pub(crate) mod tests {
use {
super::*, solana_account::AccountSharedData, solana_vote::vote_account::VoteAccount,
solana_vote_program::vote_state::create_account_with_authorized, std::iter,
};
struct VoteAccountInfo {
vote_account: Pubkey,
account: AccountSharedData,
authorized_voter: Pubkey,
}
fn new_vote_accounts(
num_nodes: usize,
num_vote_accounts_per_node: usize,
) -> HashMap<Pubkey, Vec<VoteAccountInfo>> {
(0..num_nodes)
.map(|_| {
let node_id = solana_pubkey::new_rand();
(
node_id,
iter::repeat_with(|| {
let authorized_voter = solana_pubkey::new_rand();
VoteAccountInfo {
vote_account: solana_pubkey::new_rand(),
account: create_account_with_authorized(
&node_id,
&authorized_voter,
&node_id,
0,
100,
),
authorized_voter,
}
})
.take(num_vote_accounts_per_node)
.collect(),
)
})
.collect()
}
fn new_epoch_vote_accounts(
vote_accounts_map: &HashMap<Pubkey, Vec<VoteAccountInfo>>,
node_id_to_stake_fn: impl Fn(&Pubkey) -> u64,
) -> VoteAccountsHashMap {
vote_accounts_map
.iter()
.flat_map(|(node_id, vote_accounts)| {
vote_accounts.iter().map(|v| {
let vote_account = VoteAccount::try_from(v.account.clone()).unwrap();
(v.vote_account, (node_id_to_stake_fn(node_id), vote_account))
})
})
.collect()
}
#[test]
fn test_parse_epoch_vote_accounts() {
let stake_per_account = 100;
let num_vote_accounts_per_node = 2;
let num_nodes = 10;
let vote_accounts_map = new_vote_accounts(num_nodes, num_vote_accounts_per_node);
let expected_authorized_voters: HashMap<_, _> = vote_accounts_map
.iter()
.flat_map(|(_, vote_accounts)| {
vote_accounts
.iter()
.map(|v| (v.vote_account, v.authorized_voter))
})
.collect();
let expected_node_id_to_vote_accounts: HashMap<_, _> = vote_accounts_map
.iter()
.map(|(node_pubkey, vote_accounts)| {
let mut vote_accounts = vote_accounts
.iter()
.map(|v| (v.vote_account))
.collect::<Vec<_>>();
vote_accounts.sort();
let node_vote_accounts = NodeVoteAccounts {
vote_accounts,
total_stake: stake_per_account * num_vote_accounts_per_node as u64,
};
(*node_pubkey, node_vote_accounts)
})
.collect();
let epoch_vote_accounts =
new_epoch_vote_accounts(&vote_accounts_map, |_| stake_per_account);
let (total_stake, mut node_id_to_vote_accounts, epoch_authorized_voters) =
VersionedEpochStakes::parse_epoch_vote_accounts(&epoch_vote_accounts, 0);
node_id_to_vote_accounts
.iter_mut()
.for_each(|(_, node_vote_accounts)| node_vote_accounts.vote_accounts.sort());
assert!(
node_id_to_vote_accounts.len() == expected_node_id_to_vote_accounts.len()
&& node_id_to_vote_accounts
.iter()
.all(|(k, v)| expected_node_id_to_vote_accounts.get(k).unwrap() == v)
);
assert!(
epoch_authorized_voters.len() == expected_authorized_voters.len()
&& epoch_authorized_voters
.iter()
.all(|(k, v)| expected_authorized_voters.get(k).unwrap() == v)
);
assert_eq!(
total_stake,
num_nodes as u64 * num_vote_accounts_per_node as u64 * 100
);
}
#[test]
fn test_node_id_to_stake() {
let num_nodes = 10;
let num_vote_accounts_per_node = 2;
let vote_accounts_map = new_vote_accounts(num_nodes, num_vote_accounts_per_node);
let node_id_to_stake_map = vote_accounts_map
.keys()
.enumerate()
.map(|(index, node_id)| (*node_id, ((index + 1) * 100) as u64))
.collect::<HashMap<_, _>>();
let epoch_vote_accounts = new_epoch_vote_accounts(&vote_accounts_map, |node_id| {
*node_id_to_stake_map.get(node_id).unwrap()
});
let epoch_stakes = VersionedEpochStakes::new_for_tests(epoch_vote_accounts, 0);
assert_eq!(epoch_stakes.total_stake(), 11000);
for (node_id, stake) in node_id_to_stake_map.iter() {
assert_eq!(
epoch_stakes.node_id_to_stake(node_id),
Some(*stake * num_vote_accounts_per_node as u64)
);
}
}
}