Struct robt::Config

pub struct Config {
    pub dir: OsString,
    pub name: String,
    pub z_blocksize: usize,
    pub m_blocksize: usize,
    pub v_blocksize: usize,
    pub delta_ok: bool,
    pub value_in_vlog: bool,
    pub flush_queue_size: usize,
}

Configuration for Read Only BTree index.

Configuration type is used only for building an index. Subsequently, configuration parameters are persisted along with the index.

Fields

dir: OsString

location path where index files are created.

name: String

name of the index.

z_blocksize: usize

Leaf block size in btree index. Default: ZBLOCKSIZE

m_blocksize: usize

Intermediate block size in btree index. Default: MBLOCKSIZE

v_blocksize: usize

If deltas are indexed and/or value to be stored in separate log file. Default: VBLOCKSIZE

delta_ok: bool

Include delta as part of entry. Note that delta values are always stored in separate value-log file. Default: true

value_in_vlog: bool

If true, then value shall be persisted in a separate file called value log file. Otherwise value shall be saved in the index’s leaf node. Default: false

flush_queue_size: usize

Flush queue size. Default: FLUSH_QUEUE_SIZE

Implementations

impl Config

pub fn new(dir: &OsStr, name: &str) -> Config

Create a new configuration value, use the set_* methods to add more configuration.

pub fn set_blocksize(&mut self, z: usize, v: usize, m: usize) -> &mut Self

Configure block size for leaf-node, intermediate-node, and value-log

pub fn set_delta(&mut self, delta_ok: bool) -> &mut Self

Enable delta persistence. If delta_ok is false, older versions of value shall be ignored.

pub fn set_value_log(&mut self, value_log: bool) -> &mut Self

Persist values in a separate file, called value-log file. To persist values along with leaf node, pass value_log as false.

pub fn set_flush_queue_size(&mut self, size: usize) -> &mut Self

Set flush queue size, increasing the queue size will improve batch flushing.

impl Config

pub fn to_index_file_location(&self) -> OsString

pub fn to_vlog_file_location(&self) -> OsString

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Config

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

Formats the value using the given formatter.

impl From<Config> for Stats

fn from(config: Config) -> Stats

Performs the conversion.

impl From<Stats> for Config

fn from(val: Stats) -> Config

Performs the conversion.