Implement Go-parity background flush loop (coalesce 16KB/8ms) in MsgBlock/FileStore,
replace O(n) GetStateAsync with incremental counters, skip PruneExpired/LoadAsync/
PrunePerSubject when not needed, and bypass RAFT for single-replica streams. Fix counter
tracking bugs in RemoveMsg/EraseMsg/TTL expiry and ObjectDisposedException races in
flush loop disposal. FileStore optimizations verified with 3112/3112 JetStream tests
passing; async publish benchmark remains at ~174 msg/s due to E2E protocol path bottleneck.
Add ApplyJetStreamConfigChanges to ConfigReloader for detecting MaxMemoryStore,
MaxFileStore, and Domain changes during hot reload. Add Domain property to
JetStreamOptions. Port 10 unit tests covering all change permutations.
Adds ClusterConfigChangeResult and ApplyClusterConfigChanges to ConfigReloader,
comparing route/gateway/leaf URL sets between old and new NatsOptions and reporting
added/removed routes for connection reconciliation on hot reload.
Add PropagateAuthChanges to ConfigReloader that compares Users, Accounts,
and Authorization token between old and new NatsOptions, returning an
AuthChangeResult describing which auth fields changed for connection re-evaluation.
Implements SignalHandler (PosixSignalRegistration for SIGHUP) and
ReloadFromOptionsAsync/ReloadFromOptionsResult on ConfigReloader for
in-memory options comparison without reading a config file.
Ports Go server/signal_unix.go handleSignals and server/reload.go Reload.
D6: Add ExportSubjects/ImportSubjects allow-lists to LeafHubSpokeMapper alongside
existing DenyExports/DenyImports deny-lists. When an allow-list is non-empty, subjects
must match at least one allow pattern; deny always takes precedence. Updated
LeafNodeOptions, LeafHubSpokeMapper (5-arg constructor), and LeafNodeManager to wire
through the new allow-lists. Added 13 new unit + integration tests covering allow-list
semantics, deny precedence, bidirectional filtering, and wire-level propagation.
D7: Existing NetworkingGoParityTests.cs (50 tests) covers gateway interest mode,
route pool accounting, and leaf node connections. Parity DB already up to date.
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'.
Port of Go server/reload.go option interface and diffing logic. Compares
NatsOptions property-by-property to detect changes, tags each with category
flags (logging, auth, TLS, non-reloadable), validates that non-reloadable
options (Host, Port, ServerName) are not changed at runtime, and provides
MergeCliOverrides to ensure CLI flags always take precedence over config
file values during hot reload.
- Add MaxIncludeDepth = 10 constant and thread _includeDepth through ParserState
constructors, ProcessInclude, ParseFile (private overload), and ParseEnvValue
to prevent StackOverflowException from recursive includes
- Fix PopContext to check _ctxs.Count <= 1 instead of == 0 so the root context
is never popped, replacing silent crash with clear InvalidOperationException
- Add else throw in SetValue so unknown context types surface as bugs rather
than silently dropping values
Implements NatsConfParser with Parse, ParseFile, and ParseFileWithDigest
methods. Supports nested maps/arrays, variable resolution with block
scoping and environment fallback, bcrypt password literals, integer
suffix multipliers, include directives, and cycle detection.
Port the NATS configuration file lexer from Go's conf/lex.go to C#.
The lexer is a state-machine tokenizer that supports the NATS config
format: key-value pairs with =, :, or whitespace separators; nested
maps {}; arrays []; single and double quoted strings with escape
sequences; block strings (); variables $VAR; include directives;
comments (# and //); booleans; integers with size suffixes (kb, mb, gb);
floats; ISO8601 datetimes; and IP addresses.
