// 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://wwm.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, // 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" "go.etcd.io/etcd/clientv3" ) // 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 InfoHandle *infoschema.Handle 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 } } // WithInfoHandle specifies the `infoschema.Handle` func WithInfoHandle(ih *infoschema.Handle) Option { return func(options *Options) { options.InfoHandle = ih } } // 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 } }