Pre-existing fmt drift in two files touched during the call-completion
batch (remote_safe field, dispatch helpers). Brings cargo fmt --check
clean for the review gate.
- PendingEntry stores parent_request_id (Call and Subscribe) and started flag
for abort-cascade tree indexing
- register_call/register_subscribe accept optional parent_request_id
- AbortCascade::cascade_abort walks the call tree by parent_request_id and
aborts descendants per AbortPolicy (AbortDependents: all; ContinueRunning:
unstarted only). Returns sorted list of aborted request IDs
- call.aborted for unknown request_id silently discarded (empty result)
- Composed child request_ids stay internal (not sent as call.requested)
- mark_started() tracks dispatch state for ContinueRunning decisions
- 20 unit tests covering AbortDependents/ContinueRunning, depth-3 tree,
unknown root, mixed Call/Subscribe, determinism
Implements CallConnection in src/protocol/connection.rs representing an
established alknet/call connection (either direction). Holds the Layer 2
imported-ops overlay (ADR-024) as Arc<RwLock<HashMap>>.
- register_imported / register_imported_all add to the connection overlay
- overlay_env returns an OperationEnv dispatching to imported ops; contains()
returns true only for ops in the overlay
- call() opens a stream, sends call.requested, registers in PendingRequestMap,
spawns a stream reader, resolves on first call.responded
- subscribe() sends call.requested and yields call.responded until
call.completed/call.aborted via a SubscriptionStream wrapping the mpsc receiver
- abort() sends call.aborted for the request ID and removes the pending entry
- connection drop drops the overlay (no explicit deregistration needed)
Exposes MockConnection trait and Connection::from_mock in alknet-core so
cross-crate tests can construct mock connections without real QUIC. Removes
two unused test helpers in env.rs that triggered dead-code warnings under
-D warnings. Adds parking_lot dep for the overlay RwLock and pending Mutex.
9 new connection tests (102 total in alknet-call). Clippy clean.
Create crates/alknet-call with Cargo.toml, lib.rs, and module skeletons
for the registry (spec, context, registration, env, discovery) and
protocol (wire, pending, connection, adapter, abort) subsystems. Add the
crate to the workspace members list. Depends on alknet-core (workspace
path), irpc (workspace dep), tokio, serde, serde_json, async-trait,
tracing, thiserror, uuid, and futures. Implements ProtocolHandler on
ALPN alknet/call per docs/architecture/crates/call.