| /* |
| * 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 org.apache.polygene.library.sql.assembly; |
| |
| import java.util.Objects; |
| import javax.sql.DataSource; |
| import org.apache.polygene.api.identity.StringIdentity; |
| import org.apache.polygene.bootstrap.Assemblers; |
| import org.apache.polygene.bootstrap.ModuleAssembly; |
| import org.apache.polygene.library.circuitbreaker.CircuitBreaker; |
| import org.apache.polygene.library.sql.datasource.DataSources; |
| |
| public class ExternalDataSourceAssembler |
| extends Assemblers.VisibilityIdentity<ExternalDataSourceAssembler> |
| { |
| public static String DEFAULT_DATASOURCE_IDENTITY = "external-datasource"; |
| |
| private DataSource externalDataSource; |
| |
| private CircuitBreaker circuitBreaker; |
| |
| public ExternalDataSourceAssembler() |
| { |
| identifiedBy( DEFAULT_DATASOURCE_IDENTITY ); |
| } |
| |
| public ExternalDataSourceAssembler( DataSource externalDataSource ) |
| { |
| Objects.requireNonNull( externalDataSource, "DataSource" ); |
| this.externalDataSource = externalDataSource; |
| } |
| |
| public ExternalDataSourceAssembler withCircuitBreaker() |
| { |
| this.circuitBreaker = DataSources.newDataSourceCircuitBreaker(); |
| return this; |
| } |
| |
| public ExternalDataSourceAssembler withCircuitBreaker( CircuitBreaker circuitBreaker ) |
| { |
| Objects.requireNonNull( circuitBreaker, "CircuitBreaker" ); |
| this.circuitBreaker = circuitBreaker; |
| return this; |
| } |
| |
| @Override |
| public void assemble( ModuleAssembly module ) |
| { |
| if( circuitBreaker != null ) |
| { |
| externalDataSource = DataSources.wrapWithCircuitBreaker( StringIdentity.identityOf( identity() ), externalDataSource, circuitBreaker ); |
| } |
| module.importedServices( DataSource.class ). |
| identifiedBy( identity() ). |
| visibleIn( visibility() ). |
| setMetaInfo( externalDataSource ); |
| } |
| } |