Rajendra kadam
210331ba1e
Extracts the MySQL datastore initialization out of `runServeCmd` and into a new `cmd/fleet/datastore.go`. Same pattern as the prior extractions on this issue (#44929, #45343, #45583, #46166, #46421, #46517). Continues the path toward `serve.go` >60% coverage per the discussion on #33370. Three functions come out of the inline block: - `initDatastore` — builds the shared DB connections, the datastore, and the carve store (S3-backed when configured, otherwise the datastore itself). - `buildMySQLOpts` — assembles the DB options: base logger and config, plus the optional read replica, dev SQL interceptor, and tracing. - `evalMigrationStatus` — prints any operator guidance for the migration status and returns whether `runServeCmd` should exit. The `os.Exit` stays in `runServeCmd`, so the boot/refuse-to-boot decision becomes unit-testable without the function terminating the test binary. Behavior is preserved — `runServeCmd` calls these in the same order with the same arguments, the migration-exit conditions are unchanged, and the full `cmd/fleet` suite passes against MySQL + Redis. `initDatastore` returns early after `initFatal` so it's safe when the caller's `initFatal` doesn't terminate (the case in tests). On test scope: `TestEvalMigrationStatus` covers every migration status code across the dev-mode and allow-missing-migrations combinations — that's the real decision logic. I deliberately didn't add unit tests for `initDatastore`/`buildMySQLOpts`: their only failure paths are paranoid `initFatal` wrapping around constructors that don't dial at construction time, and the option builder returns opaque option closures. Those success paths are already exercised by booting the server, so a full datastore mock wasn't worth it for coverage's sake. Remaining slice per the broader plan: Redis init. **Related issue:** Refs #33370 # Checklist for submitter - [x] Added/updated automated tests - Changes file: not applicable — internal refactor with no user-visible behavior change <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Refactor** * Reorganized database startup initialization and migration status evaluation for improved maintainability. * **Tests** * Added comprehensive test coverage for database migration status handling across various scenarios. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
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