Struct Builder

pub struct Builder<M>
where
    M: ManageConnection,
{
    pub max_lifetime: Option<Duration>,
    pub idle_timeout: Option<Duration>,
    pub connection_timeout: Option<Duration>,
    pub max_size: u32,
    pub check_interval: Option<Duration>,
    /* private fields */
}

A builder for a connection pool.

Fields

max_lifetime: Option<Duration>

idle_timeout: Option<Duration>

connection_timeout: Option<Duration>

max_size: u32

check_interval: Option<Duration>

Implementations

impl<M> Builder<M>

where M: ManageConnection,

pub fn new() -> Self

Parameters are initialized with their default values.

pub fn max_lifetime(self, max_lifetime: Option<Duration>) -> Self

Sets the maximum lifetime of connections in the pool.

If a connection reaches its maximum lifetime while checked out it will be closed when it is returned to the pool.

Defaults to 30 minutes.

use default if max_lifetime is the zero Duration.

pub fn idle_timeout(self, idle_timeout: Option<Duration>) -> Self

Sets the idle timeout used by the pool.

If set, connections will be closed after exceed idle time.

Defaults to 3 minutes.

use default if idle_timeout is the zero Duration.

pub fn connection_timeout(self, connection_timeout: Option<Duration>) -> Self

Sets the connection timeout used by the pool.

Calls to Pool::get will wait this long for a connection to become available before returning an error.

Defaults to 3 seconds. don’t timeout if connection_timeout is the zero duration

pub fn max_size(self, max_size: u32) -> Self

Sets the maximum number of connections managed by the pool.

Defaults to 10.

no limited if max_size is 0.

pub fn check_interval(self, interval: Option<Duration>) -> Self

Sets the check interval of connections managed by the pool use the ManageConnection::check.

Defaults to 3s.

pub fn build(&self, manager: M) -> Pool<M>

where M: ManageConnection,

Consumes the builder, returning a new, initialized pool.

Trait Implementations

impl<M> Debug for Builder<M>

where M: ManageConnection,

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

Formats the value using the given formatter.

impl<M> Default for Builder<M>

where M: ManageConnection,

fn default() -> Self

Returns the “default value” for a type.