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Fix runtime review findings

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Joseph Doherty
2026-04-29 10:39:49 -04:00
parent 133c83029b
commit d543679044
69 changed files with 2233 additions and 409 deletions
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docs/Sessions.md
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@@ -178,9 +178,9 @@ The order — fault, deregister, dispose, release slot, record metric, log, reth
While `Ready`, callers reach the worker through `SessionManager.InvokeAsync` or `ReadEventsAsync`. Both delegate to `GatewaySession`, which checks the state under lock and updates `LastClientActivityAt` on every invocation. `GatewaySession` also exposes typed bulk helpers (`AddItemBulkAsync`, `SubscribeBulkAsync`, etc.) that wrap `WorkerCommand` round-trips and translate non-`Ok` `ProtocolStatus` replies into `SessionManagerException` with `SessionNotReady`.
Event streaming uses `AttachEventSubscriber` which returns a disposable lease. When `allowMultipleSubscribers` is false the second attach throws `EventSubscriberAlreadyActive`; this prevents two gRPC streams from racing on the same worker event channel.
Event streaming uses `AttachEventSubscriber` which returns a disposable lease. When `allowMultipleSubscribers` is false the second attach throws `EventSubscriberAlreadyActive`; this prevents two gRPC streams from racing on the same worker event channel. Active event subscribers keep the session lease from expiring until the stream is disposed.
`ExtendLease` and `IsLeaseExpired` cooperate with `SessionManager.CloseExpiredLeasesAsync`, which iterates a registry snapshot and closes any session whose lease has expired with `LeaseExpiredReason`.
Sessions open with `MxGateway:Sessions:DefaultLeaseSeconds` (default 1800) added to the open timestamp. Unary client activity refreshes the lease by the same duration. `ExtendLease` and `IsLeaseExpired` cooperate with `SessionManager.CloseExpiredLeasesAsync`, which iterates a registry snapshot and closes any session whose lease has expired with `LeaseExpiredReason`. `SessionLeaseMonitorHostedService` runs that sweep every `MxGateway:Sessions:LeaseSweepIntervalSeconds` seconds (default 30).
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