Struct Preimage 

pub struct Preimage {
    pub requester: ServiceId,
    /* private fields */
}

Fields

requester: ServiceId

Implementations

impl Preimage

pub fn as_light(&self) -> LightPreimage

impl Preimage

pub fn new_testing(requester: ServiceId, blob: impl Into<Bytes>) -> Self

Utility to create preimage for testing: calculate hash of blob internally. Jam code do not need it as it is either known (persistence) or calculated in decode method.

pub fn new_with_hash( requester: ServiceId, blob: impl Into<Bytes>, hash: Hash, ) -> Self

Warning hash parameter for this method MUST be the hash of the blob (we only add it as parameter to avoid hash computation when already checked, for instance when read from db).

pub fn hash(&self) -> Hash

pub fn blob(&self) -> &Bytes

pub fn encoded_len(blob_len: usize) -> usize

Trait Implementations

impl Clone for Preimage

fn clone(&self) -> Preimage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Preimage

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

Formats the value using the given formatter.

impl Decode for Preimage

fn decode<I: Input>(input: &mut I) -> 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 Encode for Preimage

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 Ord for Preimage

fn cmp(&self, other: &Preimage) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Preimage

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Preimage

fn partial_cmp(&self, other: &Preimage) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl EncodeLike for Preimage

impl Eq for Preimage