Java tutorial
/* * ProActive Parallel Suite(TM): * The Open Source library for parallel and distributed * Workflows & Scheduling, Orchestration, Cloud Automation * and Big Data Analysis on Enterprise Grids & Clouds. * * Copyright (c) 2007 - 2017 ActiveEon * Contact: contact@activeeon.com * * This library is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation: version 3 of * the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * If needed, contact us to obtain a release under GPL Version 2 or 3 * or a different license than the AGPL. */ package org.ow2.proactive.connector.iaas.cache; import java.util.Map; import java.util.stream.Collectors; import org.ow2.proactive.connector.iaas.model.Infrastructure; import org.springframework.stereotype.Component; import jersey.repackaged.com.google.common.collect.ImmutableMap; import lombok.Getter; @Component public class InfrastructureCache { @Getter private volatile ImmutableMap<String, Infrastructure> supportedInfrastructures; public InfrastructureCache() { this.supportedInfrastructures = ImmutableMap.of(); } public void registerInfrastructure(Infrastructure infrastructure) { Map<String, Infrastructure> tempInfrastructures = cloneSupportedInfrastructures(); tempInfrastructures.put(infrastructure.getId(), infrastructure); supportedInfrastructures = ImmutableMap.copyOf(tempInfrastructures); } public void deleteInfrastructure(Infrastructure infrastructure) { Map<String, Infrastructure> tempInfrastructures = cloneSupportedInfrastructures(); tempInfrastructures.remove(infrastructure.getId()); supportedInfrastructures = ImmutableMap.copyOf(tempInfrastructures); } private Map<String, Infrastructure> cloneSupportedInfrastructures() { return supportedInfrastructures.entrySet().stream() .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)); } }