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ReconnectPolicy

Struct ReconnectPolicy 

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pub struct ReconnectPolicy {
    pub max_retries: u32,
    pub initial_delay_ms: u64,
    pub max_delay_ms: u64,
    pub multiplier: f64,
}
Expand description

重连策略(指数退避)

用于 QueueWrapper::with_reconnect,在网络错误(MqError::Connection)时自动重试。

  • max_retries:最大重试次数(默认 5)
  • initial_delay_ms:初始延迟毫秒(默认 100)
  • max_delay_ms:最大延迟毫秒(默认 10000)
  • multiplier:退避倍数(默认 2.0,指数退避)

Fields§

§max_retries: u32

最大重试次数(默认 5)

§initial_delay_ms: u64

初始延迟(毫秒,默认 100)

§max_delay_ms: u64

最大延迟(毫秒,默认 10000)

§multiplier: f64

退避倍数(默认 2.0,指数退避)

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impl ReconnectPolicy

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pub fn new() -> Self

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pub fn next_delay(&self, attempt: u32) -> Duration

计算第 attempt 次重试的延迟(指数退避,封顶 max_delay_ms)

  • attempt = 0:返回 initial_delay_ms
  • attempt = 1:返回 initial_delay_ms * multiplier
  • 以此类推,但不超过 max_delay_ms

使用 max(0.0) 防止负数 multiplier 导致负延迟。

Trait Implementations§

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impl Clone for ReconnectPolicy

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fn clone(&self) -> ReconnectPolicy

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ReconnectPolicy

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

Formats the value using the given formatter. Read more
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impl Default for ReconnectPolicy

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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where T: 'static + ?Sized,

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where T: ?Sized,

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fn borrow(&self) -> &T

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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn into(self) -> U

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