Struct r2d2::Pool

[+] Show declaration

pub struct Pool<M: ManageConnection>(_);

[−] Expand description

A generic connection pool.

Methods

impl<M> Pool<M> where     M: ManageConnection,

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pub fn new(manager: M) -> Result<Pool<M>, Error>

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Creates a new connection pool with a default configuration.

pub fn builder() -> Builder<M>

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Returns a builder type to configure a new pool.

pub fn get(&self) -> Result<PooledConnection<M>, Error>

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Retrieves a connection from the pool.

Waits for at most the configured connection timeout before returning an error.

pub fn try_get(&self) -> Option<PooledConnection<M>>

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Attempts to retrieve a connection from the pool if there is one available.

Returns None if there are no idle connections available in the pool. This method will not block waiting to establish a new connection.

pub fn state(&self) -> State

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Returns information about the current state of the pool.

pub fn max_size(&self) -> u32

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Returns the configured maximum pool size.

pub fn min_idle(&self) -> Option<u32>

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Returns the configured mimimum idle connection count.

pub fn test_on_check_out(&self) -> bool

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Returns if the pool is configured to test connections on check out.

pub fn max_lifetime(&self) -> Option<Duration>

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Returns the configured maximum connection lifetime.

pub fn idle_timeout(&self) -> Option<Duration>

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Returns the configured idle connection timeout.

pub fn connection_timeout(&self) -> Duration

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Returns the configured connection timeout.

Trait Implementations

impl<M> Clone for Pool<M> where     M: ManageConnection,

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Returns a new Pool referencing the same state as self.

fn clone(&self) -> Pool<M>

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Returns a copy of the value.

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

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Performs copy-assignment from source.

impl<M> Debug for Pool<M> where     M: ManageConnection + Debug,

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fn fmt(&self, fmt: &mut Formatter) -> Result

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Formats the value using the given formatter.