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WatchBuilder

gemini_adk_fluent_rs::live_builders

Struct WatchBuilder 

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pub struct WatchBuilder { /* private fields */ }
Expand description

Builder for a state watcher.

Created by Live::watch and returned to the Live chain via then.

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impl WatchBuilder

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pub fn changed(self) -> Self

Fire on any change to the watched key (default).

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pub fn changed_to(self, value: Value) -> Self

Fire when the new value equals the given value.

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pub fn crossed_above(self, threshold: f64) -> Self

Fire when the value crosses above the given threshold.

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pub fn crossed_below(self, threshold: f64) -> Self

Fire when the value crosses below the given threshold.

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pub fn became_true(self) -> Self

Fire when the value changes from non-true to true.

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pub fn became_false(self) -> Self

Fire when the value changes from true to non-true.

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pub fn blocking(self) -> Self

Make this watcher blocking (awaited sequentially on the control lane).

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pub fn then<F, Fut>(self, f: F) -> Live
where F: Fn(Value, Value, State) -> Fut + Send + Sync + 'static, Fut: Future<Output = ()> + Send + 'static,

Set the action and finish building the watcher, returning the Live builder.

The action receives (old_value, new_value, state).

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pub fn then_with_writer<F, Fut>(self, f: F) -> Live
where F: Fn(Value, Value, State, Arc<dyn SessionWriter>) -> Fut + Send + Sync + 'static, Fut: Future<Output = ()> + Send + 'static,

Like then, but the action also receives the live session writer — so a watcher can inject steering context or prompt the model, not only mutate state.

The action receives (old_value, new_value, state, writer).

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