feat(events): introduce events fallbacks #3965
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Introduce the concept of events failure because of dependencies. Add events the ability to declare a fallback dependencies, to be used upon failure. This allows events to implement not necessarily supported implementation, for new kernels for example, with other implementation to cover unsupported scenarios.
Track dependencies on probes. This makes it easier to understand when new probes are added or old ones removed.
Change the handling of the probes attach and detach to use the dependencies watchers. This allows to handle correctly failure of events and future events updates.
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IMO, if we're going by an approach where we can replace an entire set of dependency with another, then instead of having a recursive definition, each event should just have an array of definition so the map becomes |
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1. Explain what the PR does
Introduce the concept of events failure because of dependencies.
Add events the ability to declare a fallback dependencies, to be used upon failure.
This allows events to implement not necessarily supported implementation,
for new kernels for example, with other implementation to cover unsupported scenarios.
2. Explain how to test it
3. Other comments