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ConnectionPool

Struct ConnectionPool 

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

A synchronous, r2d2-style pool of blocking Connections.

Cloneable handles share one underlying pool. Connections are opened lazily, validated on checkout per the configured SyncRecycleStrategy, and returned to the pool when the SyncPooledConnection guard drops. The hot path uses only std synchronization primitives — no Tokio.

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impl ConnectionPool

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pub fn get(&self) -> Result<SyncPooledConnection>

Acquires a connection, blocking up to the configured wait_timeout for a slot.

§Errors

Returns Error::Timeout if no slot becomes available within wait_timeout, or the underlying connection error if opening a new connection fails.

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pub fn get_timeout( &self, timeout: Option<Duration>, ) -> Result<SyncPooledConnection>

Acquires a connection, blocking up to timeout for a slot (overriding the configured default). None blocks indefinitely.

§Errors

See get.

§Panics

Panics if the internal pool mutex has been poisoned by a thread that panicked while holding it.

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pub fn status(&self) -> PoolStatus

Returns the current pool status.

§Panics

Panics if the internal pool mutex has been poisoned.

Trait Implementations§

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impl Clone for ConnectionPool

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fn clone(&self) -> ConnectionPool

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 ConnectionPool

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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<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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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 from(t: T) -> T

Returns the argument unchanged.

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

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fn from_ref(input: &T) -> T

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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where L: Layer<S>,

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type Output = T

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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