*: support tidb_redact_log for explain (#54553)

[ti-chi-bot]

This is an automated cherry-pick of #54553

What problem does this PR solve?

Issue Number: close #54565

Problem Summary:

What changed and how does it work?

The main issue is that TiDB's explain function does not support tidb_redact_log, which has caused this problem to occur.

Due to the substantial size of this PR, I will outline the modifications made and the tests conducted.

The changement of StringCtx

StringCtx is used to generate information in the explain function and is also utilized in log generation. Therefore, it cannot directly read ctx to determine the redact mode.

So the changement of expression package is to add the redact parameter into StringCtx and force using the redactDisable mode when to raise the error.

so I refactor the StringWithCtx's implementation of Constant,Column. but planner/core.ToString/StringifyExpressionsWithCtx is to print the debug info for testing. so it forces to use the redactDisable

pkg/util/ranger/types.go is to support the redact for the ranger.

the changement of the planner

The main focus is on the physical operator to resolve the explain output. The primary modifications include enabling the expression to support redaction by passing the redact parameter into the expression's explain method. Additionally, some parameters of the operator itself are subjected to redaction.

the changement of the ranger

Enable the range to support redaction mode.

the main test cases

• pkg/planner/core/tests/redact
• pkg/planner/core/plan_cache_test.go
  - avoid plan cache polluting by the redact.

Check List

Tests

• Unit test

1. I add some test cases to make redact results right
2. To prevent redaction from affecting the plan cache and plan digest tests, specific tests were conducted for different redaction scenarios to observe the plan cache hit rate.

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

  • I checked and no code files have been changed.

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.

None

[hawkingrei]

/retest

[codecov]

Codecov Report

Attention: Patch coverage is 57.04918% with 262 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-7.5@55eefb6). Learn more about missing BASE report.

Additional details and impacted files

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Flag	Coverage Δ
unit	71.9972% <57.0491%> (?)

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Components	Coverage Δ
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-25 02:27:01.104318987 +0000 UTC m=+1619290.844742918: ☑️ agreed by hawkingrei.
• 2024-09-25 02:29:32.932179661 +0000 UTC m=+1619442.672603599: ☑️ agreed by qw4990.

[windtalker]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: D3Hunter, hawkingrei, qw4990, tangenta, windtalker

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• pkg/executor/importer/OWNERS [D3Hunter]
• pkg/expression/OWNERS [windtalker]
• pkg/table/OWNERS [tangenta]

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