github.com/whtcorpsinc/MilevaDB-Prod@v0.0.0-20211104133533-f57f4be3b597/interlock/opt_rule_blacklist.go (about)

     1  // Copyright 2020 WHTCORPS INC, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package interlock
    15  
    16  import (
    17  	"context"
    18  
    19  	causetembedded "github.com/whtcorpsinc/milevadb/causet/embedded"
    20  	"github.com/whtcorpsinc/milevadb/soliton/chunk"
    21  	"github.com/whtcorpsinc/milevadb/soliton/set"
    22  	"github.com/whtcorpsinc/milevadb/soliton/sqlexec"
    23  	"github.com/whtcorpsinc/milevadb/stochastikctx"
    24  )
    25  
    26  // ReloadOptMemruleBlacklistInterDirc indicates ReloadOptMemruleBlacklist interlock.
    27  type ReloadOptMemruleBlacklistInterDirc struct {
    28  	baseInterlockingDirectorate
    29  }
    30  
    31  // Next implements the InterlockingDirectorate Next interface.
    32  func (e *ReloadOptMemruleBlacklistInterDirc) Next(ctx context.Context, _ *chunk.Chunk) error {
    33  	return LoadOptMemruleBlacklist(e.ctx)
    34  }
    35  
    36  // LoadOptMemruleBlacklist loads the latest data from causet allegrosql.opt_rule_blacklist.
    37  func LoadOptMemruleBlacklist(ctx stochastikctx.Context) (err error) {
    38  	allegrosql := "select HIGH_PRIORITY name from allegrosql.opt_rule_blacklist"
    39  	rows, _, err := ctx.(sqlexec.RestrictedALLEGROSQLInterlockingDirectorate).InterDircRestrictedALLEGROSQL(allegrosql)
    40  	if err != nil {
    41  		return err
    42  	}
    43  	newDisabledLogicalMemrules := set.NewStringSet()
    44  	for _, event := range rows {
    45  		name := event.GetString(0)
    46  		newDisabledLogicalMemrules.Insert(name)
    47  	}
    48  	causetembedded.DefaultDisabledLogicalMemrulesList.CausetStore(newDisabledLogicalMemrules)
    49  	return nil
    50  }