Struct ChainReport 

pub struct ChainReport {
    pub intact_records: u64,
    pub fault: Option<Fault>,
    pub torn_tail_bytes: u64,
    pub head: Option<ContentHash>,
}

What a read-only walk of the log found.

Fields

intact_records: u64

Records that decoded and linked correctly, counted from the start until the first fault (or to the end, if there was none).

fault: Option<Fault>

The first thing wrong, if anything was.

torn_tail_bytes: u64

Bytes of unterminated final record, or 0 if the file ends on a record boundary. Non-zero is repairable; see truncate_tail.

head: Option<ContentHash>

Hash of the last intact record, which is what a restore has to agree with.

Implementations

impl ChainReport

pub fn is_usable(&self) -> bool

Whether the log can be opened and used as it stands.

A torn tail does not make this false: crate::FileLog::open repairs that on its own, and the bytes it discards were never acknowledged.

pub fn is_repairable(&self) -> bool

Whether the only thing wrong is a tail that was still being written, which truncate_tail can repair.

Trait Implementations

impl Clone for ChainReport

fn clone(&self) -> ChainReport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChainReport

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

Formats the value using the given formatter.