ERROR error rsp for use db, error:Database not exist, dbFName:log #21822

[ljluestc]

Description

• Fix taosKeeper “Database not exist” errors by eliminating implicit USE and fully qualifying all SQL with the metrics/audit database name.
• Use non-DB-bound connectors for creation/inserts and reuse a single connector where appropriate.
• Harden logging setup to avoid panics and permission issues; auto-create or fall back when log dir isn’t writable.
• Stabilize tests: auto-skip integration tests when REST (127.0.0.1:6041) is unavailable; make system/TestInit opt-in via env.
• Avoid privileged port binding in tests by using an ephemeral port for the program server.

Key Changes

• SQL qualification and connector usage:
  • tools/keeper/api/report.go: qualify CREATE/INSERT, fix minor SQL syntax.
  • tools/keeper/api/common.go: non-DB-bound connector; qualify CREATE SQL.
  • tools/keeper/monitor/monitor.go: reuse non-DB-bound connection; qualify INSERT; identity remains hostname:port.
• Logging robustness:
  • tools/keeper/infrastructure/log/log.go: ensure log directory, fall back to temp/writable path, don’t panic on rotation init failures.
• Test stabilization:
  • tools/keeper/api/adapter2_test.go
  • tools/keeper/api/gen_metric_test.go
  • tools/keeper/api/https_test.go
  • tools/keeper/api/tables_test.go
  • tools/keeper/api/audit_test.go
    • Each now skips when 127.0.0.1:6041 is unreachable.
  • tools/keeper/system/program_test.go
    • TestInit opt-in via TAOS_KEEPER_RUN_INIT_TEST=1 and REST check.
    • Test_program binds to 127.0.0.1:0 (ephemeral port), avoiding port 80 errors.

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