jcoffey-dev
2e8ab1ed6a
Closing search's active-tenant gap last commit surfaced a real asymmetry by comparison: chwriter.Registry's per-tenant writer map was still a snapshot built once at enterprise-ingest startup with no refresh at all, while search's new ActiveTenantTracker refreshes every minute. A tenant deprovisioned after enterprise-ingest started would keep writing successfully to ClickHouse until the next restart -- a real, disclosed staleness gap, not matched by anything on the Tantivy side anymore. Registry.StartRefreshing spawns a goroutine that re-lists active tenants every minute (dataSourceRefreshInterval, same interval as search's tracker) via a new SourceLister callback and reconciles the writer map: opens a connection for a newly-active tenant, closes and removes one no longer active. New connections are dialed before taking the write lock, so a slow/unreachable ClickHouse for one newly-active tenant never blocks WriteBatch's read lock. A refresh failure (lister error, or one tenant's connection failing to open) logs and leaves the existing map untouched for that tick -- the same last-known-good posture ActiveTenantTracker already uses, so a transient rbacstore/Postgres blip doesn't evict every other tenant's already-working writer. WriteBatch now takes a read lock and Close takes a write lock -- the writer map was safe unsynchronized before only because it was immutable after New() returned; StartRefreshing makes it mutable at runtime. enterprise-ingest/main.go extracts the existing rbacstore-row-to- DataSource adaptation into tenantDataSourceLister, reused for both the initial synchronous load and StartRefreshing's periodic calls, so the two can't drift into checking different things. Verified: the lister-error-keeps-last-known-good path is Docker-free (same "construct a Registry directly, bypass New" trick the existing fail-closed tests use). The actual add/remove reconciliation against real ClickHouse connections (TestRefreshAddsNewlyActiveTenant, TestRefreshRemovesNoLongerActiveTenant) are skip-gated live-ClickHouse tests, same CHWRITER_TEST_CLICKHOUSE_ADDR convention as this package's existing integration tests -- not run against a live database in this environment. This closes the last disclosed gap from Phase 4's write-routing work: both storage engines now share the same one-minute active-tenant staleness bound instead of one being materially staler than the other.