tidb options 代码
文件路径：/ddl/options.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 ddl
import (
"time"
"github.com/pingcap/tidb/infoschema"
"github.com/pingcap/tidb/kv"
clientv3 "go.etcd.io/etcd/client/v3"
)
/ Option represents an option to initialize the DDL module
type Option func(*Options)
/ Options represents all the options of the DDL module needs
type Options struct {
EtcdCli *clientv3.Client
Store kv.Storage
InfoCache *infoschema.InfoCache
Hook Callback
Lease time.Duration
}
/ WithEtcdClient specifies the `clientv3.Client` of DDL used to request the etcd service
func WithEtcdClient(client *clientv3.Client) Option {
return func(options *Options) {
options.EtcdCli = client
}
}
/ WithStore specifies the `kv.Storage` of DDL used to request the KV service
func WithStore(store kv.Storage) Option {
return func(options *Options) {
options.Store = store
}
}
/ WithInfoCache specifies the `infoschema.InfoCache`
func WithInfoCache(ic *infoschema.InfoCache) Option {
return func(options *Options) {
options.InfoCache = ic
}
}
/ WithHook specifies the `Callback` of DDL used to notify the outer module when events are triggered
func WithHook(callback Callback) Option {
return func(options *Options) {
options.Hook = callback
}
}
/ WithLease specifies the schema lease duration
func WithLease(lease time.Duration) Option {
return func(options *Options) {
options.Lease = lease
}
}