Review tail: lifecycle correctness, pluggability, pgx, SSRF redirect#3
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…t guard framework: - Start no longer holds a.mu across bundle/server/component startup; the lock now guards only state-flag transitions (starting/running), so a component calling IsRunning() from its own Start no longer deadlocks and observers don't block for the whole startup. Start-vs-Stop race is well-defined (Stop wins; second Start rejected). - readiness-delay goroutine is now cancellable via readinessStop; Stop closes it so a shutdown during ReadinessInitialDelay can no longer flip the service back to ready. - WithLogging/WithObservability/WithHealthRegistry options make the infrastructure managers injectable (the nil-check defaults were dead code); added Observability() accessor. postgresql: migrate lib/pq (maintenance mode) -> jackc/pgx/v5/stdlib; drop-in database/sql driver, pool settings unchanged. httpclient: AllowedHosts SSRF guard now also rejects redirects to disallowed hosts, not just the initial URL. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Non-security tail from the framework review, plus the SSRF redirect residual noted in PR #2.
Correctness
IsRunning()from its ownStartwould deadlock; any observer blocked for the whole startup. The lock now guards only the state-flag transitions (starting/running); startup I/O runs unlocked. Start-vs-Stop is now well-defined: Stop wins, a second concurrent Start is rejected.time.SleepthenSetReady(true)with no cancellation could flip the service back to ready after Stop set it not-ready. Now cancellable via a stop channel that Stop closes.Pluggability
WithLogging,WithObservability,WithHealthRegistryoptions — the framework had dead nil-check default branches but no way to inject these, contradicting the 'pluggable' claim. Added the missingObservability()accessor.Modernization
database/sqldriver. Pool settings unchanged; lib/pq fully removed from the module graph.Security follow-up
Verified: full
-racesuite,golangci-lint(0 issues), all 7 examples build.🤖 Generated with Claude Code