meta: Add a GetDBMeta function to meta.

[asddongmen]

What problem does this PR solve?

Issue Number: close #53685

Problem Summary:

What changed and how does it work?

Add a function named GetDBMeta to meta.go. This function will allow the caller to get all raw tableInfos of database.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

  Covered by the existing unit test cases.

Side effects

Documentation

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @asddongmen. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 55.8330%. Comparing base (04c66ee) to head (da2bcc7).
Report is 24 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #53684         +/-   ##
=================================================
- Coverage   74.4884%   55.8330%   -18.6554%     
=================================================
  Files          1506       1626        +120     
  Lines        357618     606999     +249381     
=================================================
+ Hits         266384     338906      +72522     
- Misses        71857     244923     +173066     
- Partials      19377      23170       +3793     

Flag	Coverage Δ
integration	36.3214% <62.5000%> (?)
unit	71.4139% <62.5000%> (-1.9534%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.9656% <ø> (-3.3316%)	⬇️
parser	∅ <ø> (∅)
br	50.3214% <ø> (+6.7579%)	⬆️

[asddongmen]

/hold

[D3Hunter]

what kind of filter will CDC use?

[D3Hunter]

rest lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-31 08:23:23.285807515 +0000 UTC m=+3023957.042943088: ☑️ agreed by CharlesCheung96.
• 2024-05-31 09:07:14.244842403 +0000 UTC m=+3026588.001977976: ☑️ agreed by D3Hunter.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CharlesCheung96, D3Hunter, wjhuang2016

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• pkg/meta/OWNERS [wjhuang2016]

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[tiprow]

@asddongmen: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
fast_test_tiprow	a570b9d	link	true	/test fast_test_tiprow

Full PR test history. Your PR dashboard.

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #53780.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #53781.