Struct BlockLength 

pub struct BlockLength {
    pub max: PerDispatchClass<u32>,
    pub max_header_size: Option<u32>,
}

Block length limit configuration.

Fields

max: PerDispatchClass<u32>

Maximal total length in bytes for each extrinsic class.

In the worst case, the total block length is going to be: MAX(max)

max_header_size: Option<u32>

Optional maximum header size in bytes.

It is still possible that a header goes above this limit, if the runtime deposits too many digests in the header. However, it is assumed that the runtime restricts the access for depositing digests in the header.

If None, defaults to 20% of max block length.

Implementations

impl BlockLength

pub fn max(max: u32) -> Self

👎Deprecated: Use BlockLength::builder().max(value).build() instead. Will be removed after July 2026.

Create new BlockLength with max for every class.

pub fn max_with_normal_ratio(max: u32, normal: Perbill) -> Self

👎Deprecated: Use BlockLength::builder().normal_ratio(value, ratio).build() instead. Will be removed after July 2026.

Create new BlockLength with max for Operational & Mandatory and normal * max for Normal.

pub fn builder() -> BlockLengthBuilder

Returns a builder to build a BlockLength.

pub fn max_header_size(&self) -> u32

Returns the maximum header size.

Trait Implementations

impl Clone for BlockLength

fn clone(&self) -> BlockLength

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockLength

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

Formats the value using the given formatter.

impl Decode for BlockLength

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Default for BlockLength

fn default() -> Self

Returns the “default value” for a type.

impl Encode for BlockLength

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

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.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl TypeInfo for BlockLength

type Identity = BlockLength

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl EncodeLike for BlockLength