As of version 0.0.1 the DefaultRuntime accepts an initialization function that returns a trait object.
This results in unneeded heap allocation and dynamic dispatch.
Instead, the API should be re-written to allow the compiler to statically determine the types involved.
The user will have to implement an EventHandler trait:
pub trait EventHandler<O: Serialize, E: Display, I: LambdaContext> {
fn initialize(&mut self) -> Result<(), E>;
fn on_event(&mut self, event: &str, context: &I) -> Result<O, E>;
}Types implementing it, perform Lambda instance initialization once inside initialize and event handling inside on_event.
Any resources can be part of the struct implementing the EventHandler trait.
The on_event should take a &str as the event string instead of the previous Option<&str> to simplify users' functions.
As of version
0.0.1theDefaultRuntimeaccepts an initialization function that returns a trait object.This results in unneeded heap allocation and dynamic dispatch.
Instead, the API should be re-written to allow the compiler to statically determine the types involved.
The user will have to implement an
EventHandlertrait:Types implementing it, perform Lambda instance initialization once inside
initializeand event handling insideon_event.Any resources can be part of the struct implementing the
EventHandlertrait.The
on_eventshould take a&stras the event string instead of the previousOption<&str>to simplify users' functions.