| /* |
| * 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 datasource |
| |
| import ( |
| pb "github.com/go-chassis/cari/discovery" |
| ) |
| |
| // @titile SchemasAnalysis |
| // @description schemasanlysis decide the schema to be deleted,updated or added |
| // @param schemas []*pb.Schema "the schemas from request" |
| // @param schemasFromDb []*pb.Schema "the schemas from database by the serviceID" |
| // @param schemaIDsInService []string "the schema field in service struct" |
| func SchemasAnalysis(schemas []*pb.Schema, schemasFromDb []*pb.Schema, schemaIDsInService []string) ( |
| []*pb.Schema, []*pb.Schema, []*pb.Schema, []string) { |
| needUpdateSchemas := make([]*pb.Schema, 0, len(schemas)) |
| needAddSchemas := make([]*pb.Schema, 0, len(schemas)) |
| needDeleteSchemas := make([]*pb.Schema, 0, len(schemasFromDb)) |
| nonExistSchemaIds := make([]string, 0, len(schemas)) |
| |
| duplicate := make(map[string]struct{}) |
| for _, schema := range schemas { |
| if _, ok := duplicate[schema.SchemaId]; ok { |
| continue |
| } |
| duplicate[schema.SchemaId] = struct{}{} |
| |
| exist := false |
| for _, schemaFromDb := range schemasFromDb { |
| if schema.SchemaId == schemaFromDb.SchemaId { |
| needUpdateSchemas = append(needUpdateSchemas, schema) |
| exist = true |
| break |
| } |
| } |
| if !exist { |
| needAddSchemas = append(needAddSchemas, schema) |
| } |
| |
| exist = false |
| for _, schemaID := range schemaIDsInService { |
| if schema.SchemaId == schemaID { |
| exist = true |
| } |
| } |
| if !exist { |
| nonExistSchemaIds = append(nonExistSchemaIds, schema.SchemaId) |
| } |
| } |
| |
| for _, schemaFromDb := range schemasFromDb { |
| exist := false |
| for _, schema := range schemas { |
| if schema.SchemaId == schemaFromDb.SchemaId { |
| exist = true |
| break |
| } |
| } |
| if !exist { |
| needDeleteSchemas = append(needDeleteSchemas, schemaFromDb) |
| } |
| } |
| |
| return needUpdateSchemas, needAddSchemas, needDeleteSchemas, nonExistSchemaIds |
| } |