OperatorContext

arcon::prelude

Struct OperatorContext 

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pub struct OperatorContext<TimerState, OperatorState>
where
    TimerState: Message + Clone + Default,
    OperatorState: ArconState,
{ /* private fields */ }
Expand description

Context Available to an Arcon Operator

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impl<TimerState, OperatorState> OperatorContext<TimerState, OperatorState>
where TimerState: Message + Clone + Default, OperatorState: ArconState,

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pub fn state(&mut self) -> &mut OperatorState

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pub fn log(&self) -> &ArconLogger

Enable users to log within an Operator

`error!(ctx.log(), “Something bad happened!”);

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pub fn current_time(&mut self) -> StateResult<u64>

Get current event time

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pub fn schedule_at( &mut self, time: u64, entry: TimerState, ) -> TimerResult<TimerState>

Schedule at a specific time in the future

Returns Ok if the entry was scheduled successfully or Err(entry) if it has already expired.

Auto Trait Implementations§

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impl<TimerState, OperatorState> Freeze for OperatorContext<TimerState, OperatorState>
where OperatorState: Freeze,

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impl<TimerState, OperatorState> !RefUnwindSafe for OperatorContext<TimerState, OperatorState>

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impl<TimerState, OperatorState> Send for OperatorContext<TimerState, OperatorState>

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impl<TimerState, OperatorState> !Sync for OperatorContext<TimerState, OperatorState>

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impl<TimerState, OperatorState> Unpin for OperatorContext<TimerState, OperatorState>
where OperatorState: Unpin,

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impl<TimerState, OperatorState> !UnwindSafe for OperatorContext<TimerState, OperatorState>

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impl<T> Any for T
where T: 'static + ?Sized,

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where T: ?Sized,

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where U: From<T>,

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Calls U::from(self).

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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