Struct MessageLimits

pub struct MessageLimits {
    pub max_topic_name_size: u32,
    pub max_message_size: u32,
    pub max_topics_per_contract: u32,
}

Available on crate feature std only.

Configuration for messages limits.

Fields

max_topic_name_size: u32

Maximum size (in bytes) of a topic name string.

max_message_size: u32

Maximum message size in bytes.

max_topics_per_contract: u32

Maximum number of topics that a contract can register.

Implementations

impl MessageLimits

pub fn max_topics_per_contract(&self) -> u32

Returns the max number of topics a contract can register.

pub fn max_topic_name_size(&self) -> u32

Returns the maximum allowed size for the topic name string.

pub fn max_message_size(&self) -> u32

Returns the maximum allowed size (in bytes) of the serialized message payload.

Trait Implementations

impl Clone for MessageLimits

fn clone(&self) -> MessageLimits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl DataSize for MessageLimits

const IS_DYNAMIC: bool = false

If true, the type has a heap size that can vary at runtime, depending on the actual value.

const STATIC_HEAP_SIZE: usize = 0usize

The amount of space a value of the type always occupies. If IS_DYNAMIC is false, this is the total amount of heap memory occupied by the value. Otherwise this is a lower bound.

fn estimate_heap_size(&self) -> usize

Estimates the size of heap memory taken up by this value.

impl Debug for MessageLimits

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

Formats the value using the given formatter.

impl Default for MessageLimits

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MessageLimits

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Distribution<MessageLimits> for Standard

Available on crate feature testing only.

fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> MessageLimits

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>

where R: Rng, Self: Sized,

Create an iterator that generates random values of T, using rng as the source of randomness.

fn map<F, S>(self, func: F) -> DistMap<Self, F, T, S>

where F: Fn(T) -> S, Self: Sized,

Create a distribution of values of ‘S’ by mapping the output of Self through the closure F

impl FromBytes for MessageLimits

fn from_bytes(bytes: &[u8]) -> Result<(Self, &[u8]), Error>

Deserializes the slice into Self.

fn from_vec(bytes: Vec<u8>) -> Result<(Self, Vec<u8>), Error>

Deserializes the Vec<u8> into Self.

impl PartialEq for MessageLimits

fn eq(&self, other: &MessageLimits) -> 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 Serialize for MessageLimits

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ToBytes for MessageLimits

fn to_bytes(&self) -> Result<Vec<u8>, Error>

Serializes &self to a Vec<u8>.

fn serialized_length(&self) -> usize

Returns the length of the Vec<u8> which would be returned from a successful call to to_bytes() or into_bytes(). The data is not actually serialized, so this call is relatively cheap.

fn into_bytes(self) -> Result<Vec<u8>, Error>

where Self: Sized,

Consumes self and serializes to a Vec<u8>.

fn write_bytes(&self, writer: &mut Vec<u8>) -> Result<(), Error>

Writes &self into a mutable writer.

impl Copy for MessageLimits

impl Eq for MessageLimits

impl StructuralPartialEq for MessageLimits