[−][src]Trait mobc::ConnectionManager
A trait which provides connection-specific functionality.
Associated Types
type Connection: Send + 'static
The connection type this manager deals with.
type Error: Error + Send + Sync + 'static
The error type returned by Connection
s.
type Executor: Executor
The executor type this manager bases.
Required methods
fn get_executor(&self) -> Self::Executor
Get a future executor.
fn connect(&self) -> AnyFuture<Self::Connection, Self::Error>
Attempts to create a new connection.
fn is_valid(
&self,
conn: Self::Connection
) -> AnyFuture<Self::Connection, Self::Error>
&self,
conn: Self::Connection
) -> AnyFuture<Self::Connection, Self::Error>
Determines if the connection is still connected to the database.
A standard implementation would check if a simple query like SELECT 1
succeeds.
fn has_broken(&self, conn: &mut Option<Self::Connection>) -> bool
Quickly determines if the connection is no longer usable.
This will be called synchronously every time a connection is returned
to the pool, so it should not block. If it returns true
, the
connection will be discarded.
For example, an implementation might check if the underlying TCP socket
has disconnected. Implementations that do not support this kind of
fast health check may simply return false
.