Enum FutureStampPolicy 

#[non_exhaustive]
pub enum FutureStampPolicy {
    Default,
    Tolerance(Duration),
    Allow,
}

What crate::Database::open_tuned does about a recorded_at in the future (0.13.5, W7.4, [D-178]).

Shaped like crate::WalCheckpointPolicy and for D-155’s reason: this guards an invariant, so “leave it alone” must not be spelt with an Option whose None turns it off for every caller who never heard of it.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Default

Refuse beyond DEFAULT_FUTURE_STAMP_TOLERANCE.

Tolerance(Duration)

Refuse beyond a tolerance of your own. Duration::ZERO refuses any stamp at all ahead of the wall clock, which is the strictest form and is only reasonable where the host’s time is known good.

Allow

Open regardless, and take the floor from whatever is stored.

The repair path, and it is not a repair. It exists because a database this check refuses cannot otherwise be reached by the crate that refuses it, and inspecting a file requires opening it. Every write made under this policy inherits the poisoned floor, so use it to read and to plan, not to carry on.

Trait Implementations

impl Clone for FutureStampPolicy

fn clone(&self) -> FutureStampPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FutureStampPolicy

impl Debug for FutureStampPolicy

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

Formats the value using the given formatter.

impl Default for FutureStampPolicy

fn default() -> FutureStampPolicy

Returns the “default value” for a type.

impl Eq for FutureStampPolicy

impl PartialEq for FutureStampPolicy

fn eq(&self, other: &FutureStampPolicy) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FutureStampPolicy