Struct PlanContext 

#[non_exhaustive]
pub struct PlanContext<'a> {
    pub planner_state: Option<&'a [u8]>,
    pub generation: u64,
}

What the backend hands the planner on each run.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

planner_state: Option<&'a [u8]>

The cursor persisted by the previous run’s SplitPlan::planner_state; None on the first ever plan.

generation: u64

The current plan generation: bumped on every leader failover, so a planner can tell a fresh leadership from a continuation.

Implementations

impl<'a> PlanContext<'a>

pub fn new(planner_state: Option<&'a [u8]>, generation: u64) -> PlanContext<'a>

Build a context (backends construct this; sources only read it).

Trait Implementations

impl<'a> Debug for PlanContext<'a>

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

Formats the value using the given formatter.