pub struct FilePersistence { /* private fields */ }Expand description
File-based persistence with CRC32 integrity checks.
Layout on disk:
<dir>/raft_state.json— serialised term + voted_for (atomic write via rename)<dir>/raft_log.bin— append-only binary log where each record is:[len:4][term:8][index:8][cmd_len:4][cmd:N][crc32:4]
Implementations§
Source§impl FilePersistence
impl FilePersistence
Sourcepub fn new(dir: &Path, sync_on_write: bool) -> RaftResult<Self>
pub fn new(dir: &Path, sync_on_write: bool) -> RaftResult<Self>
Create a new file-based persistence rooted at dir.
Creates the directory if it does not exist.
Trait Implementations§
Source§impl RaftPersistence for FilePersistence
impl RaftPersistence for FilePersistence
Source§fn save_state(&self, term: Term, voted_for: Option<NodeId>) -> RaftResult<()>
fn save_state(&self, term: Term, voted_for: Option<NodeId>) -> RaftResult<()>
Save persistent state (current_term, voted_for)
Source§fn load_state(&self) -> RaftResult<(Term, Option<NodeId>)>
fn load_state(&self) -> RaftResult<(Term, Option<NodeId>)>
Load persistent state; returns (term, voted_for)
Source§fn append_entries(&self, entries: &[LogEntry]) -> RaftResult<()>
fn append_entries(&self, entries: &[LogEntry]) -> RaftResult<()>
Append log entries to persistent storage
Source§fn truncate_log_from(&self, index: LogIndex) -> RaftResult<()>
fn truncate_log_from(&self, index: LogIndex) -> RaftResult<()>
Truncate log from index (inclusive) onward
Source§fn last_log_index(&self) -> RaftResult<LogIndex>
fn last_log_index(&self) -> RaftResult<LogIndex>
Get the last persisted log index (0 if empty)
Source§fn save_applied_index(&self, index: LogIndex) -> RaftResult<()>
fn save_applied_index(&self, index: LogIndex) -> RaftResult<()>
Save the applied index to durable storage. Read more
Source§fn load_applied_index(&self) -> RaftResult<LogIndex>
fn load_applied_index(&self) -> RaftResult<LogIndex>
Load the previously persisted applied index (0 if not set).
Source§fn sync(&self) -> RaftResult<()>
fn sync(&self) -> RaftResult<()>
Sync all data to durable storage
Auto Trait Implementations§
impl Freeze for FilePersistence
impl RefUnwindSafe for FilePersistence
impl Send for FilePersistence
impl Sync for FilePersistence
impl Unpin for FilePersistence
impl UnsafeUnpin for FilePersistence
impl UnwindSafe for FilePersistence
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Source§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
Source§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
Source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
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impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
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impl<T> LayoutRaw for T
Source§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.
Source§impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
Source§unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
Returns whether the given value has been niched. Read more
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fn resolve_niched(out: Place<NichedOption<T, N1>>)
Writes data to
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