| /* |
| * Copyright 2010 Paul Merlin. |
| * |
| * 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 org.qi4j.library.sql.assembly; |
| |
| import javax.sql.DataSource; |
| import org.qi4j.api.util.NullArgumentException; |
| import org.qi4j.bootstrap.Assemblers; |
| import org.qi4j.bootstrap.AssemblyException; |
| import org.qi4j.bootstrap.ModuleAssembly; |
| import org.qi4j.library.circuitbreaker.CircuitBreaker; |
| import org.qi4j.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 ) |
| { |
| NullArgumentException.validateNotNull( "DataSource", externalDataSource ); |
| this.externalDataSource = externalDataSource; |
| } |
| |
| public ExternalDataSourceAssembler withCircuitBreaker() |
| { |
| this.circuitBreaker = DataSources.newDataSourceCircuitBreaker(); |
| return this; |
| } |
| |
| public ExternalDataSourceAssembler withCircuitBreaker( CircuitBreaker circuitBreaker ) |
| { |
| NullArgumentException.validateNotNull( "CircuitBreaker", circuitBreaker ); |
| this.circuitBreaker = circuitBreaker; |
| return this; |
| } |
| |
| @Override |
| public void assemble( ModuleAssembly module ) |
| throws AssemblyException |
| { |
| if( circuitBreaker != null ) |
| { |
| externalDataSource = DataSources.wrapWithCircuitBreaker( identity(), externalDataSource, circuitBreaker ); |
| } |
| module.importedServices( DataSource.class ). |
| identifiedBy( identity() ). |
| visibleIn( visibility() ). |
| setMetaInfo( externalDataSource ); |
| } |
| } |