Struct substrate_primitives::ChangesTrieConfiguration

pub struct ChangesTrieConfiguration {
    pub digest_interval: u64,
    pub digest_levels: u32,
}

Substrate changes trie configuration.

Fields

digest_interval: u64

Interval (in blocks) at which level1-digests are created. Digests are not created when this is less or equal to 1.

digest_levels: u32

Maximal number of digest levels in hierarchy. 0 means that digests are not created at all (even level1 digests). 1 means only level1-digests are created. 2 means that every digest_interval^2 there will be a level2-digest, and so on.

Methods

impl ChangesTrieConfiguration

pub fn is_digest_build_enabled(&self) -> bool

Is digest build enabled?

pub fn is_digest_build_required_at_block(&self, block: u64) -> bool

Do we need to build digest at given block?

pub fn max_digest_interval(&self) -> u64

Returns max digest interval. One if digests are not created at all. Returns ::std::u64::MAX instead of panic in the case of overflow.

pub fn digest_level_at_block(&self, block: u64) -> Option<(u32, u64, u64)>

Returns Some if digest must be built at given block number. The tuple is: ( digest level digest interval (in blocks) step between blocks we're interested in when digest is built )

Trait Implementations

impl Eq for ChangesTrieConfiguration

impl Default for ChangesTrieConfiguration

fn default() -> ChangesTrieConfiguration

Returns the "default value" for a type.

impl Clone for ChangesTrieConfiguration

fn clone(&self) -> ChangesTrieConfiguration

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<ChangesTrieConfiguration> for ChangesTrieConfiguration

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Debug for ChangesTrieConfiguration

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

Formats the value using the given formatter.

impl Encode for ChangesTrieConfiguration

fn encode_to<EncOut: Output>(&self, dest: &mut EncOut)

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R where
    F: FnOnce(&[u8]) -> R, 

Convert self to a slice and then invoke the given closure with it.

impl Decode for ChangesTrieConfiguration

fn decode<DecIn: Input>(input: &mut DecIn) -> Option<Self>

Attempt to deserialise the value from input.

impl Serialize for ChangesTrieConfiguration

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for ChangesTrieConfiguration

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.