sessionctx,traceevent: support flight recorder sink to log and update @@tidb_trace_event

[tiancaiamao]

What problem does this PR solve?

Issue Number: ref #64008

Problem Summary:

What changed and how does it work?

Support flight recorder sink trace events to log.
A new SQL variable @@tidb_trace_event_control is introduced.
Update @@tidb_trace_event to support json config

Here is how to use it:

All events:

select  json_object('enabled_categories', json_array('*'), 'dump_trigger', json_object('type', 'sampling', 'sampling', 10));
+---------------------------------------------------------------------------------------------------------------------+
| json_object('enabled_categories', json_array('*'), 'dump_trigger', json_object('type', 'sampling', 'sampling', 10)) |
+---------------------------------------------------------------------------------------------------------------------+
| {"dump_trigger": {"sampling": 10, "type": "sampling"}, "enabled_categories": ["*"]}                                 |
+---------------------------------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)

mysql> set @@global.tidb_trace_event_control = json_object('enabled_categories', json_array('*'), 'dump_trigger', json_object('type', 'sampling', 'sampling', 1));
Query OK, 0 rows affected (0.03 sec)

1/1000 Sampling:

set @@global.tidb_trace_event_control = json_object('enabled_categories', json_array('*'), 'dump_trigger', json_object('type', 'sampling', 'sampling', 1000));

Filter by categories:

set @@global.tidb_trace_event_control = json_object('enabled_categories', json_array('txn_2pc', 'stmt_lifecycle'), 'dump_trigger', json_object('type', 'sampling', 'sampling', 1));

Filter by user command, like sql regexp, plan digest, login user etc, here is example of plan_digest:

set @@global.tidb_trace_event_control = json_object('enabled_categories',  json_array('*'),
	'dump_trigger',  json_object('type', 'user_command', 'user_command', json_object('type', 'plan_digest', 'plan_digest', '42a1c8aae6f133e934d4bf0147491709a8812ea05ff8819ec522780fe657b772')));

Filter by suspicious_event, like query fail, resolve lock, slow query etc:

set @@global.tidb_trace_event_control = json_object('enabled_categories',  json_array('*'),
	'dump_trigger',  json_object('type', 'suspicious_event', 'suspicious_event', json_object('type', 'resolve_lock')));

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.

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

[ti-chi-bot]

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[codecov]

Codecov Report

❌ Patch coverage is 62.50000% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.1941%. Comparing base (61bbb07) to head (32fa04b).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #64362        +/-   ##
================================================
+ Coverage   72.7353%   73.1941%   +0.4588%     
================================================
  Files          1862       1862                
  Lines        505221     505338       +117     
================================================
+ Hits         367474     369878      +2404     
+ Misses       115427     113234      -2193     
+ Partials      22320      22226        -94     

Flag	Coverage Δ
integration	41.7598% <10.0000%> (?)
unit	72.3157% <62.5000%> (+0.0107%)	⬆️

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Components	Coverage Δ
dumpling	52.8700% <ø> (ø)
parser	∅ <ø> (∅)
br	46.1964% <ø> (-0.0076%)	⬇️

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