Implements ServiceImportShadowed, GetShadowedServiceImports, HasShadowedImports,
and CheckServiceImportShadowing on Account to detect when local SubList subscriptions
would intercept messages before a service import can receive them. Adds ShadowCheckResult
record and 10 tests covering exact, wildcard, and gt-wildcard shadowing scenarios.
Add ActivationClaim and ActivationCheckResult types plus five methods on
Account (RegisterActivation, CheckActivationExpiry, IsActivationExpired,
GetExpiredActivations, RemoveExpiredActivations) and an ActiveActivationCount
property, mirroring Go accounts.go checkActivation / activationExpired logic.
Adds 10 targeted tests in Auth/ActivationExpirationTests.cs (all pass).
Add ExpiresAt, IsExpired, TimeToExpiry, SetExpiration, ClearExpiration,
SetExpirationFromTtl, and GetExpirationInfo to Account. Expiry is stored
as UTC ticks in a long field (long.MinValue sentinel) for lock-free reads
via Interlocked. Add AccountExpirationInfo record. 10 new tests cover all
behaviours.
Extend PermissionLruCache with SetSub/TryGetSub (internal key prefix "S:")
alongside existing PUB API ("P:" prefix, backward-compatible). Add Invalidate()
and Generation property for generation-based cache invalidation. Add
GenerationId/IncrementGeneration to Account for account-level change signalling.
10 new tests in SubPermissionCacheTests cover all paths.
Implements ClientTraceInfo with TraceMsgDelivery recording and per-client
echo suppression; fixes AccountGoParityTests namespace ambiguity caused by
the new NATS.Server.Tests.Subscriptions test namespace.
Implements RouteResultCache with fixed-capacity LRU eviction and atomic
generation-based invalidation (Go ref: client.go routeCache, maxResultCacheSize=8192).
Fixes AccountGoParityTests namespace ambiguity introduced by new test file.
E6: Add IsSystemAccount property to Account, mark $SYS account as system,
add IsSystemSubject/IsSubscriptionAllowed/GetSubListForSubject helpers to
route $SYS.> subjects to the system account's SubList and block non-system
accounts from subscribing.
E7: Add ConfigReloader.ReloadAsync and ApplyDiff for structured async reload,
add ConfigReloadResult/ConfigApplyResult types. SIGHUP handler already wired
via PosixSignalRegistration in HandleSignals.
E8: Add PropagateAuthChanges to re-evaluate connected clients after auth
config reload, disconnecting clients whose credentials no longer pass
authentication with -ERR 'Authorization Violation'.
E4: AccountImportExport with DFS cycle detection for service imports,
RemoveServiceImport/RemoveStreamImport, and ValidateImport authorization.
E5: AccountLimits record with MaxStorage/MaxConsumers/MaxAckPending,
TryReserveConsumer/ReleaseConsumer, TrackStorageDelta on Account.
20 new tests, all passing.
