Struct VolatileState 

pub struct VolatileState {
    pub commit_index: LogIndex,
    pub last_applied: LogIndex,
}

Volatile state on all servers

Can be reconstructed from persistent state

Fields

commit_index: LogIndex

Index of highest log entry known to be committed (initialized to 0, increases monotonically)

last_applied: LogIndex

Index of highest log entry applied to state machine (initialized to 0, increases monotonically)

Implementations

impl VolatileState

pub fn new() -> Self

Create new volatile state with initial values

pub fn update_commit_index(&mut self, index: LogIndex)

Update commit index

pub fn apply_entries(&mut self, up_to_index: LogIndex)

Advance last_applied index

pub fn pending_entries(&self) -> u64

Get the number of entries that need to be applied

Trait Implementations

impl Clone for VolatileState

fn clone(&self) -> VolatileState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VolatileState

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

Formats the value using the given formatter.

impl Default for VolatileState

fn default() -> Self

Returns the “default value” for a type.