Blackboard

Blackboard represents a memory layer that enables to store and get the data, lock and take it. By default, it works in memory.

Format

Blackboard preserves the pairs of String and BBValue.

#![allow(unused)]
fn main() {
#[derive(Debug, PartialEq, Serialize, Deserialize)]
pub enum BBValue {
    Locked(RtValue),
    Unlocked(RtValue),
    Taken,
}
}

where Locked means the value is locked for everything, Unlocked a normal value enables to read, write and other actions, Taken means the key exists but the value is taken from the Blackboard.

Load and dump

The Blackboard enables to dump the snapshot to the disk or print it and load the initial configuration from a file, see ForesterBuilder for details.

• dump: Drops the snapshot to the file in json format.
• print_dump: Prints the snapshot to the stdout in json format.
• text_dump: Returns the snapshot in json format.
• load: Loads the snapshot from the file in json format.

Utils

A set of extra helper methods for the Blackboard is available in the utils module for instance blackboard::utils::push_to_arr method.