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ConnectionSlot

Struct ConnectionSlot 

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pub struct ConnectionSlot { /* private fields */ }
Expand description

进程生命周期连接统计槽;未知名称共用固定回退槽。

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impl ConnectionSlot

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pub fn reject(&self, reason: ConnectionRejection)

业务作用:记录连接发放之前的安全门禁拒绝。

参数说明:

  • reason:是由连接权威判定的固定分类。

返回:无;不产生数据库 operation 或连接等待样本。

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pub fn acquire(&'static self, purpose: ConnectionPurpose) -> WaitGuard

业务作用:开始观察普通 Pool 获取,保证取消时回收 in-flight。

参数说明:

  • purpose:是调用方明确声明的连接用途。

返回:持有进程静态统计槽的等待守卫。

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pub fn transaction_slot(&'static self) -> WaitGuard

业务作用:开始观察 ambient transaction 的连接槽等待。

参数说明:无。

返回:与 Pool acquire 独立计时的取消安全守卫。

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