tidb admin_plugins 源码
tidb admin_plugins 代码
文件路径：/executor/admin_plugins.go
// Copyright 2019 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package executor
import (
"context"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/planner/core"
"github.com/pingcap/tidb/plugin"
"github.com/pingcap/tidb/util/chunk"
)
// AdminPluginsExec indicates AdminPlugins executor.
type AdminPluginsExec struct {
baseExecutor
Action core.AdminPluginsAction
Plugins []string
}
// Next implements the Executor Next interface.
func (e *AdminPluginsExec) Next(ctx context.Context, _ *chunk.Chunk) error {
switch e.Action {
case core.Enable:
return e.changeDisableFlagAndFlush(false)
case core.Disable:
return e.changeDisableFlagAndFlush(true)
}
return nil
}
func (e *AdminPluginsExec) changeDisableFlagAndFlush(disabled bool) error {
dom := domain.GetDomain(e.ctx)
for _, pluginName := range e.Plugins {
err := plugin.ChangeDisableFlagAndFlush(dom, pluginName, disabled)
if err != nil {
return err
}
}
return nil
}
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