Struct ConnectionCounter

pub struct ConnectionCounter {
    inner: Arc<Mutex<ConnectionCounterInner>>,
}

Fields

inner: Arc<Mutex<ConnectionCounterInner>>

Implementations

impl ConnectionCounter

pub fn allocate_connection( &self, metadata: impl Into<UserMetadata>, ) -> Result<Option<ConnectionHandle>, ConnectionError>

Returns a ConnectionHandle which must be kept alive for the entire duration of the external connection.

Dropping the ConnectionHandle decrements the connection count.

pub fn update_limit(&self, new_limit: u64)

Updates the maximum number of connections we allow.

pub fn update_superuser_reserved(&self, new_reserve: u64)

Updates the number of connections we reserve for superusers.

fn create_handle(&self) -> ConnectionHandle

Trait Implementations

impl Clone for ConnectionCounter

fn clone(&self) -> ConnectionCounter

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConnectionCounter

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

Formats the value using the given formatter.

impl Default for ConnectionCounter

fn default() -> Self

Returns the “default value” for a type.