⚠ Apply predicates on handler instead of passing them to the source #1
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This change add generic versions of event, handler and predicates along the existing ones, prefixed with `Typed`. The existing ones are left in place under the same signature. The `source` constructors are changed to be generic.
…handler with a predicates filter and pass the new handler to the source Signed-off-by: Tim Ramlot <[email protected]>
inteon
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Apr 22, 2024
| // Channel is used to provide a source of events originating outside the cluster | ||
| // (e.g. GitHub Webhook callback). Channel requires the user to wire the external | ||
| // source (e.g. http handler) to write GenericEvents to the underlying channel. | ||
| func Channel[T any](source <-chan event.TypedGenericEvent[T], handler handler.TypedEventHandler[T], predicates ...predicate.TypedPredicate[T]) Source { | ||
| func Channel[T any](source <-chan event.TypedGenericEvent[T], handler handler.TypedEventHandler[T], options ...ChannelOption) Source { |
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Since the predicates are now passed to WithPredicates instead of this function, we can add an options variadic argument and use that to configure eg. the buffer size.
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Implemented in kubernetes-sigs#2783. |
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This is a proposed change to kubernetes-sigs#2783.
In kubernetes-sigs#2783, the API of the Source is changed and the handler and predicates are passed to the source when constructed instead of through the Start function.
This PR proposes to further improve that API and make the sources unaware of predicates, instead predicates are used to filter what events are passed to the handler by wrapping the handler and returning a new handler (see WithPredicates function).