Enum AccountsFile

pub enum AccountsFile {
    AppendVec(AppendVec),
}

An enum for accessing an accounts file which can be implemented under different formats.

Variants

AppendVec(AppendVec)

Implementations

impl AccountsFile

pub fn new_from_file( path: impl AsRef<Path>, current_len: usize, ) -> Result<(Self, usize)>

Create an AccountsFile instance from the specified path.

The second element of the returned tuple is the number of accounts in the accounts file.

pub fn flush(&self) -> Result<()>

pub fn reset(&self)

pub fn remaining_bytes(&self) -> u64

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn capacity(&self) -> u64

pub fn is_recyclable(&self) -> bool

pub fn file_name(slot: Slot, id: impl Display) -> String

pub fn get_account( &self, index: usize, ) -> Option<(StoredAccountMeta<'_>, usize)>

Return (account metadata, next_index) pair for the account at the specified index if any. Otherwise return None. Also return the index of the next entry.

pub fn account_matches_owners( &self, offset: usize, owners: &[Pubkey], ) -> Result<usize, MatchAccountOwnerError>

pub fn get_path(&self) -> PathBuf

Return the path of the underlying account file.

pub fn account_iter(&self) -> AccountsFileIter<'_>

Return iterator for account metadata

pub fn accounts(&self, offset: usize) -> Vec<StoredAccountMeta<'_>>

Return a vector of account metadata for each account, starting from offset.

pub fn append_accounts<'a, 'b, T: ReadableAccount + Sync, U: StorableAccounts<'a, T>, V: Borrow<AccountHash>>( &self, accounts: &StorableAccountsWithHashesAndWriteVersions<'a, 'b, T, U, V>, skip: usize, ) -> Option<Vec<StoredAccountInfo>>

Copy each account metadata, account and hash to the internal buffer. If there is no room to write the first entry, None is returned. Otherwise, returns the starting offset of each account metadata. Plus, the final return value is the offset where the next entry would be appended. So, return.len() is 1 + (number of accounts written) After each account is appended, the internal current_len is updated and will be available to other threads.

Trait Implementations

impl Debug for AccountsFile

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.