| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 schema |
| |
| import ( |
| "fmt" |
| |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| ) |
| |
| type initFunc func(opts Options) (DAO, error) |
| |
| var ( |
| plugins = make(map[string]initFunc) |
| instance DAO |
| ) |
| |
| // Install load plugins configuration into plugins |
| func Install(pluginImplName string, f initFunc) { |
| plugins[pluginImplName] = f |
| } |
| |
| // Init construct storage plugin instance |
| // invoked by sc main process. |
| func Init(opts Options) error { |
| if opts.Kind == "" { |
| return nil |
| } |
| |
| engineFunc, ok := plugins[opts.Kind] |
| if !ok { |
| return fmt.Errorf("plugin implement not supported [%s]", opts.Kind) |
| } |
| |
| var err error |
| instance, err = engineFunc(opts) |
| if err != nil { |
| return err |
| } |
| log.Info(fmt.Sprintf("schema plugin [%s] enabled", opts.Kind)) |
| |
| return nil |
| } |
| |
| func Instance() DAO { |
| return instance |
| } |