PS-9780 fix: Increase the max size of audit_log_filter rule

https://perconadev.atlassian.net/browse/PS-9780

Increased max allowed audit_log_filter rule size to 16384.

'audit_log_filter.udf_audit_log_filter_set_filter' MTR test case adjusted to
check new limit.

Author: percona-ysorokin

plugin/audit_log_filter/audit_table/base.h

@@ -27,7 +27,7 @@ namespace audit_log_filter::audit_table {
 inline constexpr const size_t kAuditFieldLengthUsername = 32;
 inline constexpr const size_t kAuditFieldLengthUserhost = 255;
 inline constexpr const size_t kAuditFieldLengthFiltername = 255;
-inline constexpr const size_t kAuditFieldLengthFilter = 1024;
+inline constexpr const size_t kAuditFieldLengthFilter = 16 * 1024;
 
 enum class TableResult { Ok, Fail, Found, NotFound };
 

plugin/audit_log_filter/tests/mtr/r/udf_audit_log_filter_set_filter.result

@@ -22,10 +22,11 @@ SELECT audit_log_filter_set_filter('filter_1', '');
 ERROR HY000: Can't initialize function 'audit_log_filter_set_filter'; Wrong argument: empty filter definition
 #
 # Check too long argument
+SET @too_long_definition = REPEAT('a', 16385);
 SELECT audit_log_filter_set_filter('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', '{"filter": {"class": {"name": "connection"}}}');
 ERROR HY000: Can't initialize function 'audit_log_filter_set_filter'; Wrong argument: filter_name is too long, max length is 255
-SELECT audit_log_filter_set_filter('filter_1', 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa');
-ERROR HY000: Can't initialize function 'audit_log_filter_set_filter'; Wrong argument: definition is too long, max length is 1024
+SELECT audit_log_filter_set_filter('filter_1', @too_long_definition);
+ERROR HY000: Can't initialize function 'audit_log_filter_set_filter'; Wrong argument: definition is too long, max length is 16384
 #
 # Filter validity check, incorrect JSON
 SELECT audit_log_filter_set_filter('filter_1', '{}');

plugin/audit_log_filter/tests/mtr/t/udf_audit_log_filter_set_filter.test

@@ -29,11 +29,11 @@ SELECT audit_log_filter_set_filter('filter_1', '');
 --echo #
 --echo # Check too long argument
 --let $too_long_name = `SELECT REPEAT('a', 256)`
---let $too_long_definition = `SELECT REPEAT('a', 1025)`
+SET @too_long_definition = REPEAT('a', 16385);
 --error 1123
 --eval SELECT audit_log_filter_set_filter('$too_long_name', '{"filter": {"class": {"name": "connection"}}}')
 --error 1123
---eval SELECT audit_log_filter_set_filter('filter_1', '$too_long_definition')
+SELECT audit_log_filter_set_filter('filter_1', @too_long_definition);
 
 --disable_query_log
 call mtr.add_suppression("Wrong argument: incorrect rule definition");