Struct FailoverCoordinator

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pub struct FailoverCoordinator;

Expand description

The coordinated zero-RPO failover state machine.

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impl FailoverCoordinator

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pub fn run( req: &FailoverRequest, tx: &mut dyn FailoverTransport, ) -> Result<FailoverOutcome, FailoverError>

Execute the handover described by req, driving the cluster through tx.

Returns Ok(FailoverOutcome) once the term has been handed over (cleanly, or forced past a lagging target). Returns Err(FailoverError::CatchUpTimedOut) only for a coordinated handover whose target never caught up — in which case writes have already been resumed on the old primary and nothing was committed on the target.

Auto Trait Implementations§

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impl UnwindSafe for FailoverCoordinator

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