diffusion: IOError rethrow policy #5067
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karknu
approved these changes
Feb 7, 2025
ouroboros-network/sim-tests-lib/Test/Ouroboros/Network/Testnet.hs
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(See CHANGELOG for more details)
- Extract Cardano-specific components into separate modules to resolve cyclic dependency issues:
- `ConsensusModePeerTargets` and `PeerSelectionTargets` were refactored to avoid circular dependencies.
- Introduce extension points in Diffusion data structures:
- Split P2P functionality into `P2PCardano` (for Cardano Node specifics) and a more general `P2P` module.
- Added `Minimal/Node.hs` as a placeholder for a minimal Node diffusion instantiation example.
- Refactor Peer Selection:
- Removed redundant `PeerSelectionActionsArgs`.
- Reorganized `DNSActions` and `LedgerPeersArgs`.
- Improved API for `PeerSelectionActions`.
- Rename `Cardano.Node` to `Cardano.Network`.
- Generalize and refactor the following components:
- `ConsensusModePeerTargets`.
- `PeerSelection{Views, Counters}` to allow extensibility for third-party users.
- `PublicRootPeers`.
- Enhance the Outbound Governor:
- Generalize `MinimalP2P` for diffusion initialization.
- Update `ArgumentsExtra` with new parameters for a more flexible diffusion setup.
- Refactor `PeerSelection.Governor.Monitor` to separate Cardano-specific monitoring actions and support third-party custom actions.
- Ensure the `Diffusion` module is fully polymorphic:
- Removed `CardanoP2P` dependencies.
- Updated the test suite to align with the new structure.
- Miscellaneous updates:
- Update CHaP and fix build issues.
- Remove `daBlockFetchMode`.
- Address review feedback.
- Fix churn timeout tests and increase `shortDelay` to stabilize tests.
- Recover `sigusr1` signal handler.
- Make addresses polymorphic.
- Refactor `extraDebugState` and introduce `P2PDecisionType`.
- Refactor `requestPublicRootPeers` type.
It's not needed.
They are passed as a closure, no need to leak them outside of `Cardano` (or any other 3rd party integration).
Instead of specifying `extraAPI ~ ()` for non-p2p, we can make it polymorphic. This way both p2p & non-p2 `Application` type is using the same type variables, and the wrapper type can be removed. This is more in-line with removal of non-p2p code base.
Also adhere to the convention: first `extraFlags`, then `extraPeers`
We can pass `PeerSelectionInterfaces` to `updateWithState` function to get access to `readUseLedgerPeers`.
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testnet: organised imports
Also edit export lists so that we need fewer imports.
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Rebased on top of #5016.