Struct ethcore_db::DatabaseWithMetrics

pub struct DatabaseWithMetrics { /* private fields */ }

Database with enabled statistics

Implementations

impl DatabaseWithMetrics

pub fn new(db: Database) -> Self

Create a new instance

Trait Implementations

impl KeyValueDB for DatabaseWithMetrics

fn get(&self, col: Option<u32>, key: &[u8]) -> Result<Option<DBValue>>

Get a value by key.

fn get_by_prefix(&self, col: Option<u32>, prefix: &[u8]) -> Option<Box<[u8]>>

Get a value by partial key. Only works for flushed data.

fn write_buffered(&self, transaction: DBTransaction)

Write a transaction of changes to the buffer.

fn write(&self, transaction: DBTransaction) -> Result<()>

Write a transaction of changes to the backing store.

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

Flush all buffered data.

fn iter<'a>(
    &'a self,
    col: Option<u32>
) -> Box<dyn Iterator<Item = (Box<[u8]>, Box<[u8]>)> + 'a>

Iterate over flushed data for a given column.

fn iter_from_prefix<'a>(
    &'a self,
    col: Option<u32>,
    prefix: &'a [u8]
) -> Box<dyn Iterator<Item = (Box<[u8]>, Box<[u8]>)> + 'a>

Iterate over flushed data for a given column, starting from a given prefix.

fn restore(&self, new_db: &str) -> Result<()>

Attempt to replace this database with a new one located at the given path.

fn transaction(&self) -> DBTransaction

Helper to create a new transaction.

impl PrometheusMetrics for DatabaseWithMetrics

fn prometheus_metrics(&self, p: &mut PrometheusRegistry)

impl KeyValueDB for DatabaseWithMetrics