init(blockTip:headerTip:progress:warningSet:warningUnset:flushError:fatalError:)

Creates notification callbacks.

init(blockTip: ((SynchronizationState, BlockTreeEntrySnapshot, Double) -> Void)? = nil, headerTip: ((SynchronizationState, Int64, Int64, Bool) -> Void)? = nil, progress: ((String, Int32, Bool) -> Void)? = nil, warningSet: ((Warning, String) -> Void)? = nil, warningUnset: ((Warning) -> Void)? = nil, flushError: ((String) -> Void)? = nil, fatalError: ((String) -> Void)? = nil)

Parameters

blockTip: Handler for chain tip updates. See blockTip.
headerTip: Handler for new best headers. See headerTip.
progress: Handler for block sync progress. See progress.
warningSet: Handler for new validation warnings. See warningSet.
warningUnset: Handler for cleared validation warnings. See warningUnset.
flushError: Handler for errors flushing data to disk. See flushError.
fatalError: Handler for unrecoverable library errors. See fatalError.

Discussion

Set only the callbacks you need; unset callbacks are ignored. All closures are captured at init time and cannot be changed later.