1. Overview
The MultiEventSink.hpp header declares a simple fan-out sink that forwards each RootGuard event to multiple downstream IEventSink instances.
The file integrates the following components, APIs, or runtime concepts:
- IEventSink – common sink interface
- std::reference_wrapper – non-owning downstream sink storage
2. Sink Registration
add(IEventSink&) stores a non-owning reference to a sink. The caller must ensure every registered sink outlives the MultiEventSink.
3. Event Fan-Out
onEvent() iterates the registered sinks in insertion order and forwards the same immutable event to each one.
4. Runtime and Security Considerations
- Failure isolation: the source implementation catches exceptions from each individual sink so one broken output does not prevent other outputs.
- Non-owning composition: lifetime management remains explicit in the daemon entry point.
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