Enum UnreadablePolicy 

#[non_exhaustive]
pub enum UnreadablePolicy {
    Fail,
    QuarantineAfter {
        attempts: u32,
    },
}

What to do with a database that cannot be read (not corrupt: see the module docs).

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.

Fail

Return DbError::Unreadable; never touch the file. The default.

QuarantineAfter

Quarantine the file once reading it has failed attempts consecutive opens (counting the current one; a value of 0 is treated as 1). Three or more is sensible: it means the failure survived at least two restarts.

Fields

attempts: u32

Trait Implementations

impl Clone for UnreadablePolicy

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for UnreadablePolicy

impl Debug for UnreadablePolicy

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

Formats the value using the given formatter.

impl Default for UnreadablePolicy

fn default() -> Self

Returns the “default value” for a type.

impl Eq for UnreadablePolicy

impl PartialEq for UnreadablePolicy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UnreadablePolicy