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Background
To support a various number of use cases Iroha2 must implement logic to plug additional logic as an actor. The design should allow an arbitrary actor to receive messages from other actors and share messages about his work.
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According to the requirement of supporting different use cases, actors should be implemented as compile-time features (at least) or as pluggable extensions (point to discuss and future research).
Decisions
Custom minimalistic actor framework will be introduced and integrated.
Alternatives
- Use available actor frameworks such as Actix or different
Concerns
- Tradeoff between extensibility and overhead with maintenance global bus and filter messages
Assumptions
- Filtering messages on message bus layer against skipping on actors
- Research pros and cons of actors as separate binaries with external API to extend pluggability
Risks
Additional Information
https://github.com/jonhoo/bus
Simple implementation of a lock-free, bounded, single-producer, multi-consumer, broadcast channel
https://github.com/actix/actix
Popular actor framework for Rust
https://video.ethz.ch/events/2017/rust/e2d74a7b-7cfd-4bd3-8ce5-23c99ad775e2.html
Type-safe & high-perf distributed actor systems with Rust by Eickhoff, Anselm