Struct Journal 

pub struct Journal { /* private fields */ }

Available on crate feature sqlite only.

The Journal is the audit log of all changes to a zone after initial creation.

Implementations

impl Journal

pub fn new(conn: Connection) -> Result<Self, PersistenceError>

Constructs a new Journal, attaching to the specified Sqlite Connection

pub fn from_file(journal_file: &Path) -> Result<Self, PersistenceError>

Constructs a new Journal opening a Sqlite connection to the file at the specified path

pub fn conn(&self) -> MutexGuard<'_, Connection>

Returns a reference to the Sqlite Connection

pub fn schema_version(&self) -> i64

Returns the current schema version of the journal

pub fn iter(&self) -> JournalIter<'_>

this returns an iterator from the beginning of time, to be used to recreate a zone handler

pub fn insert_record( &self, soa_serial: u32, record: &Record, ) -> Result<(), PersistenceError>

Inserts a record, this is an append only operation.

Records should never be posthumously modified. The first message serialized to the journal should be a single AXFR of the entire zone to be used as a starting point for reconstruction.

Argument

• record - will be serialized into the journal

pub fn insert_records( &self, soa_serial: u32, records: &[Record], ) -> Result<(), PersistenceError>

Inserts a set of records into the Journal, a convenience method for insert_record

pub fn select_record( &self, row_id: i64, ) -> Result<Option<(i64, Record)>, PersistenceError>

Selects a record from the given row_id.

This allows for the entire set of records to be iterated through, by starting at 0, and incrementing each subsequent row.

Arguments

• row_id - the row_id can either be exact, or start at 0 to get the earliest row in the list.

pub fn select_schema_version(conn: &Connection) -> Result<i64, PersistenceError>

selects the current schema version of the journal DB, returns -1 if there is no schema

Arguments

• conn - db connection to use

pub fn schema_up(&mut self) -> Result<i64, PersistenceError>

initializes the schema for the Journal