Struct ckb_freezer::Freezer
source · [−]pub struct Freezer {
pub stopped: Arc<AtomicBool>,
/* private fields */
}
Expand description
Freezer is an memory mapped append-only database to store immutable chain data into flat files
Fields
stopped: Arc<AtomicBool>
stop flag
Implementations
sourceimpl Freezer
impl Freezer
sourcepub fn open_in<P: AsRef<Path>>(path: P) -> Result<Freezer, Error>
pub fn open_in<P: AsRef<Path>>(path: P) -> Result<Freezer, Error>
Creates a freezer at temporary path
sourcepub fn freeze<F>(
&self,
threshold: BlockNumber,
get_block_by_number: F
) -> Result<BTreeMap<Byte32, (BlockNumber, u32)>, Error> where
F: Fn(BlockNumber) -> Option<BlockView>,
pub fn freeze<F>(
&self,
threshold: BlockNumber,
get_block_by_number: F
) -> Result<BTreeMap<Byte32, (BlockNumber, u32)>, Error> where
F: Fn(BlockNumber) -> Option<BlockView>,
Freeze background process that periodically checks the chain data for any import progress and moves ancient data from the kv-db into the freezer.
sourcepub fn retrieve(&self, number: BlockNumber) -> Result<Option<Vec<u8>>, Error>
pub fn retrieve(&self, number: BlockNumber) -> Result<Option<Vec<u8>>, Error>
Retrieve an item with the given number
sourcepub fn number(&self) -> BlockNumber
pub fn number(&self) -> BlockNumber
Return total item number in the freezer
Trait Implementations
Auto Trait Implementations
impl !RefUnwindSafe for Freezer
impl Send for Freezer
impl Sync for Freezer
impl Unpin for Freezer
impl !UnwindSafe for Freezer
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more