pub struct LatestChainTip {
receiver: WatchReceiver<Option<ChainTipBlock>>,
}Expand description
Efficient access to the state’s current best chain tip.
Each method returns data from the latest tip, regardless of how many times you call it.
Cloned instances provide identical tip data.
The chain tip data is based on:
- the best non-finalized chain tip, if available, or
- the finalized tip.
§Note
If a lot of blocks are committed at the same time, the latest tip will skip some blocks in the chain.
Fields§
§receiver: WatchReceiver<Option<ChainTipBlock>>The receiver for the current chain tip’s data.
Implementations§
source§impl LatestChainTip
impl LatestChainTip
sourcefn new(receiver: Receiver<Option<ChainTipBlock>>) -> Self
fn new(receiver: Receiver<Option<ChainTipBlock>>) -> Self
Create a new LatestChainTip from a watch channel receiver.
sourcefn with_chain_tip_block<U, F>(&self, f: F) -> Option<U>where
F: FnOnce(&ChainTipBlock) -> U,
fn with_chain_tip_block<U, F>(&self, f: F) -> Option<U>where
F: FnOnce(&ChainTipBlock) -> U,
Maps the current data ChainTipData to Option<U>
by applying a function to the watched value,
while holding the receiver lock as briefly as possible.
This helper method is a shorter way to borrow the value from the [watch::Receiver] and
extract some information from it, while also adding the current chain tip block’s fields as
records to the current span.
A single read lock is acquired to clone T, and then released after the clone.
See the performance note on WatchReceiver::with_watch_data.
Does not mark the watched data as seen.
§Correctness
To avoid deadlocks, see the correctness note on WatchReceiver::with_watch_data.
Trait Implementations§
source§impl ChainTip for LatestChainTip
impl ChainTip for LatestChainTip
source§fn best_tip_changed(&mut self) -> BestTipChanged<'_>
fn best_tip_changed(&mut self) -> BestTipChanged<'_>
Returns when the state tip changes.
Marks the state tip as seen when the returned future completes.
source§fn mark_best_tip_seen(&mut self)
fn mark_best_tip_seen(&mut self)
Mark the current best state tip as seen.
source§fn best_tip_height(&self) -> Option<Height>
fn best_tip_height(&self) -> Option<Height>
Returns the height of the best chain tip. Read more
source§fn best_tip_hash(&self) -> Option<Hash>
fn best_tip_hash(&self) -> Option<Hash>
Returns the block hash of the best chain tip. Read more
source§fn best_tip_height_and_hash(&self) -> Option<(Height, Hash)>
fn best_tip_height_and_hash(&self) -> Option<(Height, Hash)>
Returns the height and the hash of the best chain tip. Read more
source§fn best_tip_block_time(&self) -> Option<DateTime<Utc>>
fn best_tip_block_time(&self) -> Option<DateTime<Utc>>
Returns the block time of the best chain tip. Read more
source§fn best_tip_height_and_block_time(&self) -> Option<(Height, DateTime<Utc>)>
fn best_tip_height_and_block_time(&self) -> Option<(Height, DateTime<Utc>)>
Returns the height and the block time of the best chain tip.
Returning both values at the same time guarantees that they refer to the same chain tip. Read more
source§fn best_tip_mined_transaction_ids(&self) -> Arc<[Hash]>
fn best_tip_mined_transaction_ids(&self) -> Arc<[Hash]>
Returns the mined transaction IDs of the transactions in the best chain tip block. Read more
source§impl Clone for LatestChainTip
impl Clone for LatestChainTip
source§fn clone(&self) -> LatestChainTip
fn clone(&self) -> LatestChainTip
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreAuto Trait Implementations§
impl Freeze for LatestChainTip
impl !RefUnwindSafe for LatestChainTip
impl Send for LatestChainTip
impl Sync for LatestChainTip
impl Unpin for LatestChainTip
impl !UnwindSafe for LatestChainTip
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