The ScadaBridge central shared-store live gate proved SqlServerSecretsStoreMigrator's
"safe to run concurrently" claim false on a virgin database: Serializable isolation does
not serialize the IF NOT EXISTS metadata probes against another session's in-flight
CREATE, so of two central nodes booting together the loser died with SqlException 2714
("There is already an object named 'zbsecrets'") — the retry filter covered only
deadlock 1205. Losing such a race means the object now exists (the desired end state),
so 2714 (schema/table), 1913 (index) and 2627 (schema_version MERGE-insert PK) are now
retryable alongside 1205; the retry re-runs the idempotent IF NOT EXISTS path.
Classification scans the whole SqlException.Errors collection (2714 arrives stacked with
2759), the retry cap keeps genuine conflicts failing closed, and 2705 is deliberately
excluded (unreachable — columns live in a single CREATE TABLE statement). Predicate
extracted as an internal static pinned by offline tests; live suite gains an env-gated
4-concurrent-migrators virgin-database test. Six packages pushed to the Gitea feed at
0.5.1.
Claude-Session: https://claude.ai/code/session_014WNM4vjoVksyyBraTXSZE1
Secrets were per-node SQLite, so a secret written on one node was invisible to
the rest of a cluster. G-7's design resolved the "shared SQL store vs Akka
replicator" fork to build only the former; both are built here so the choice is
a deployment decision (availability vs partition tolerance) rather than a
library limitation.
Two new packages — ZB.MOM.WW.Secrets.Replicator.SqlServer (shared store, plus a
local-store-with-hub mode) and .Replicator.AkkaDotNet (peer-to-peer over
distributed pub/sub). Core gains ISecretsStoreMigrator, one shared
SecretLastWriterWins predicate so no two stores can disagree on a tie, the
transport-agnostic reconciler, and ReplicatingSecretStore — which closes a real
gap: nothing had ever called ISecretReplicator.PublishAsync, so the seam was
inert and local writes would not have propagated at all.
Verified 182 pass / 1 skip / 0 warnings, including 15 live tests against a real
SQL Server 2022 (the SQLite suite ported case-for-case, so any behavioural
divergence between the stores fails) and a 9-test in-process 2-node Akka
cluster over real remoting. A post-build review caught six defects, all fixed
and now covered: both replication modes could not resolve from the container
(no test had built one), an unbounded fetch that broke past SQL Server's
2100-parameter cap, a poison row that aborted the rest of its batch forever,
Enum.Parse on peer input that could restart the actor in a loop, null crypto
blobs crossing the trust boundary, and a silently dropped pull-read failure.
Packed at 0.2.0 and vulnerability-scanned clean; not yet published to the feed.
Claude-Session: https://claude.ai/code/session_01BL2Vu1ESDQ9SCN4gVKkdts
Joseph Doherty