Struct InMemoryQueue 

pub struct InMemoryQueue { /* private fields */ }

Implementations

impl InMemoryQueue

pub fn new() -> Self

pub fn with_max_messages_per_topic(max: usize) -> Self

创建指定每 topic 最大消息数的队列（H-3 修复）

当队列中消息数达到此限制时，publish 将返回 MqError::Publish 错误。 默认 100,000，可根据内存容量调整。

pub async fn message_count(&self, topic: &str) -> usize

pub async fn subscriber_count(&self, topic: &str) -> usize

pub async fn in_flight_count(&self) -> usize

Trait Implementations

impl Default for InMemoryQueue

fn default() -> Self

Returns the “default value” for a type.

impl MessageQueue for InMemoryQueue

fn publish<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, topic: &'life1 str, message: &'life2 [u8], ) -> Pin<Box<dyn Future<Output = Result<(), MqError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

fn consume<'life0, 'life1, 'async_trait>( &'life0 self, topic: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<Message>, MqError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

fn ack<'life0, 'life1, 'async_trait>( &'life0 self, message_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), MqError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

fn subscribe<'life0, 'life1, 'async_trait>( &'life0 self, topic: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), MqError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,