[DNM]dumpling: Support check keyspace in dumpling

[ystaticy]

What problem does this PR solve?

Issue Number: ref #53542

Problem Summary:

What changed and how does it work?

Check that the keyspace name is consistent between the command line and TiDB.
If they are not equal, panic dumpling task and return panic msg panic: the keyspace name in command line is different from keyspace name in TiDB.

Check List

Tests

• Manual test (add detailed scripts or steps below)

1. create keyspace ks1.
2. start TiDB instance tidb01 and set keyspace-name=ks1.
3. start dumpling with --keyspace-name ks1, connect to tidb01, dumpling task will success.
   We can see log:

["dumpling using keyspace."] [keyspaceName=ks1]

5. start dumpling with --keyspace-name ks2, connect to tidb01, dumpling task will failed.
   dumpling will return the keyspace name in command line is different from keyspace name in TiDB.

./dumpling -u root -P 4000 -h 127.0.0.1 --filetype sql -t 1 -L ./dump.log --keyspace-name ks2
panic: the keyspace name in command line is different from keyspace name in TiDB.

6. start dumpling without --keyspace-name, connect to tidb01, dumpling task will failed.

./dumpling -u root -P 4000 -h 127.0.0.1 --filetype sql -t 1 -L ./dump.log
panic: the keyspace name in command line is different from keyspace name in TiDB.

7. start TiDB instance tidb02 without keyspace-name

8. start dumpling without --keyspace-name, connect to tidb02, dumpling task will success.

9. start dumpling with --keyspace-name ks1, connect to tidb02, dumpling task will failed.

./dumpling -u root -P 4000 -h 127.0.0.1 --filetype sql -t 1 -L ./dump.log --keyspace-name ks1
panic: the keyspace name in command line is different from keyspace name in TiDB.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

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

Support check keyspace in dumpling

[tiprow]

Hi @ystaticy. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 75 lines in your changes missing coverage. Please review.

Project coverage is 74.5009%. Comparing base (9657f06) to head (bc9faa7).
Report is 600 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #53541        +/-   ##
================================================
+ Coverage   74.3925%   74.5009%   +0.1083%     
================================================
  Files          1505       1505                
  Lines        357314     430737     +73423     
================================================
+ Hits         265815     320903     +55088     
- Misses        72175      89930     +17755     
- Partials      19324      19904       +580     

Flag	Coverage Δ
integration	49.3638% <0.0000%> (?)
unit	71.3041% <0.0000%> (-1.9520%)	⬇️

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

Components	Coverage Δ
dumpling	53.7782% <0.0000%> (-2.5189%)	⬇️
parser	∅ <ø> (∅)
br	50.3858% <ø> (+7.2960%)	⬆️

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[ystaticy]

/test unit-test

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/test unit-test

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[disksing]

/ok-to-test

[ti-chi-bot]

PR needs rebase.

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