Trait solana_accounts_db::storable_accounts::StorableAccounts

pub trait StorableAccounts<'a>: Sync {
    // Required methods
    fn account<Ret>(
        &self,
        index: usize,
        callback: impl for<'local> FnMut(AccountForStorage<'local>) -> Ret,
    ) -> Ret;
    fn slot(&self, index: usize) -> Slot;
    fn target_slot(&self) -> Slot;
    fn len(&self) -> usize;

    // Provided methods
    fn account_default_if_zero_lamport<Ret>(
        &self,
        index: usize,
        callback: impl for<'local> FnMut(AccountForStorage<'local>) -> Ret,
    ) -> Ret { ... }
    fn is_empty(&self) -> bool { ... }
    fn contains_multiple_slots(&self) -> bool { ... }
}

abstract access to pubkey, account, slot, target_slot of either: a. (slot, &[&Pubkey, &ReadableAccount]) b. (slot, &[&Pubkey, &ReadableAccount, Slot]) (we will use this later) This trait avoids having to allocate redundant data when there is a duplicated slot parameter. All legacy callers do not have a unique slot per account to store.

Required Methods

fn account<Ret>( &self, index: usize, callback: impl for<'local> FnMut(AccountForStorage<'local>) -> Ret, ) -> Ret

account at ‘index’

fn slot(&self, index: usize) -> Slot

fn target_slot(&self) -> Slot

slot that all accounts are to be written to

fn len(&self) -> usize

accounts to write

Provided Methods

fn account_default_if_zero_lamport<Ret>( &self, index: usize, callback: impl for<'local> FnMut(AccountForStorage<'local>) -> Ret, ) -> Ret

None if account is zero lamports

fn is_empty(&self) -> bool

true if no accounts to write

fn contains_multiple_slots(&self) -> bool

are there accounts from multiple slots only used for an assert

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl<'a> StorableAccounts<'a> for (Slot, &'a [StakeReward])

allow StakeReward to be passed to StoreAccounts directly without copies or vec construction

fn account<Ret>( &self, index: usize, callback: impl for<'local> FnMut(AccountForStorage<'local>) -> Ret, ) -> Ret

fn slot(&self, _index: usize) -> Slot

fn target_slot(&self) -> Slot

fn len(&self) -> usize

impl<'a: 'b, 'b> StorableAccounts<'a> for (Slot, &'b [(&'a Pubkey, &'a AccountSharedData)])

fn account<Ret>( &self, index: usize, callback: impl for<'local> FnMut(AccountForStorage<'local>) -> Ret, ) -> Ret

fn slot(&self, _index: usize) -> Slot

fn target_slot(&self) -> Slot

fn len(&self) -> usize

Implementors

impl<'a> StorableAccounts<'a> for StorableAccountsBySlot<'a>