start::db::recovery_unit

Struct RecoveryUnit

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pub struct RecoveryUnit { /* private fields */ }
Expand description

RecoveryUnit is core concept of database

It provides utils for Atomic transactions

Stores changes that user written inside

Commit it to storage on commit operation,

or rollback it

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impl RecoveryUnit

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pub fn new(storage: Rc<RefCell<StartStorage>>) -> Self

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pub fn write(&mut self, offset: usize, data: &[u8])

Operation to add pending operation, that might be written on storage on commit

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pub fn commit(&mut self)

Apply all actual pending operations

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pub fn rollback(&mut self)

Clear pending operations

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pub fn effective_view(&self, offset: usize, len: usize) -> Vec<u8> ⓘ

Gives actual content of database with apply of recovery unit context

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pub fn is_committed(&self) -> bool

Trait Implementations§

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impl Drop for RecoveryUnit

Like RAII in Mongo DB

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fn drop(&mut self)

Executes the destructor for this type. Read more

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