Struct scylla::transport::execution_profile::ExecutionProfileHandle

pub struct ExecutionProfileHandle(/* private fields */);

A handle that points to an ExecutionProfile.

Its goal is to enable remapping all associated entities (query/Session) to another execution profile at once. Note: Cloned handles initially point to the same Arc’ed execution profile. However, as the mapping has yet another level of indirection - through Arc<ArcSwap> - remapping one of them affects all the others, as under the hood it is done by replacing the Arc held by the ArcSwap, which is shared by all cloned handles. The optional String is just for debug purposes. Its purpose is described in ExecutionProfile::into_handle_with_label.

Implementations

impl ExecutionProfileHandle

pub fn pointee_to_builder(&self) -> ExecutionProfileBuilder

Creates a builder having all options set to the same as set in the ExecutionProfile pointed by this handle.

pub fn to_profile(&self) -> ExecutionProfile

Returns execution profile pointed by this handle.

pub fn map_to_another_profile(&mut self, profile: ExecutionProfile)

Makes the handle point to a new execution profile. All entities (queries/Session) holding this handle will reflect the change.

Trait Implementations

impl Clone for ExecutionProfileHandle

fn clone(&self) -> ExecutionProfileHandle

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExecutionProfileHandle

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

Formats the value using the given formatter.