Struct ConnectionManager

pub struct ConnectionManager<T> { /* private fields */ }

Available on crate feature r2d2 only.

An r2d2 connection manager for use with Diesel.

See the r2d2 documentation for usage examples.

Implementations

impl<T> ConnectionManager<T>

pub fn new<S: Into<String>>(database_url: S) -> Self

Returns a new connection manager, which establishes connections to the given database URL.

pub fn update_database_url<S: Into<String>>(&mut self, database_url: S)

Modifies the URL which was supplied at initialization.

This does not update any state for existing connections, but this new URL is used for new connections that are created.

Trait Implementations

impl<T: Clone> Clone for ConnectionManager<T>

fn clone(&self) -> ConnectionManager<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for ConnectionManager<T>

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

Formats the value using the given formatter.

impl<T> ManageConnection for ConnectionManager<T>

where T: R2D2Connection + Send + 'static,

type Connection = T

The connection type this manager deals with.

type Error = Error

The error type returned by Connections.

fn connect(&self) -> Result<T, Error>

Attempts to create a new connection.

fn is_valid(&self, conn: &mut T) -> Result<(), Error>

Determines if the connection is still connected to the database.

fn has_broken(&self, conn: &mut T) -> bool

Quickly determines if the connection is no longer usable.

impl<T: Send + 'static> Sync for ConnectionManager<T>