/* * Copyright (C) 2014 Red Hat, Inc. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.controller.networkconfig.neutron.implementation; import org.apache.felix.dm.Component; import org.opendaylight.controller.clustering.services.CacheConfigException; import org.opendaylight.controller.clustering.services.CacheExistException; import org.opendaylight.controller.clustering.services.IClusterContainerServices; import org.opendaylight.controller.clustering.services.IClusterServices; import org.opendaylight.controller.configuration.ConfigurationObject; import org.opendaylight.controller.configuration.IConfigurationContainerAware; import org.opendaylight.controller.configuration.IConfigurationContainerService; import org.opendaylight.controller.networkconfig.neutron.INeutronLoadBalancerCRUD; import org.opendaylight.controller.networkconfig.neutron.NeutronLoadBalancer; import org.opendaylight.controller.sal.utils.IObjectReader; import org.opendaylight.controller.sal.utils.Status; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.FileNotFoundException; import java.io.IOException; import java.io.ObjectInputStream; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.Dictionary; import java.util.EnumSet; import java.util.HashSet; import java.util.List; import java.util.Map.Entry; import java.util.Set; import java.util.concurrent.ConcurrentMap; public class NeutronLoadBalancerInterface implements INeutronLoadBalancerCRUD, IConfigurationContainerAware, IObjectReader { private static final Logger logger = LoggerFactory.getLogger(NeutronLoadBalancerInterface.class); private static final String FILE_NAME = "neutron.loadBalancer.conf"; private String containerName = null; private IClusterContainerServices clusterContainerService = null; private IConfigurationContainerService configurationService; private ConcurrentMap loadBalancerDB; // methods needed for creating caches void setClusterContainerService(IClusterContainerServices s) { logger.debug("Cluster Service set"); clusterContainerService = s; } void unsetClusterContainerService(IClusterContainerServices s) { if (clusterContainerService == s) { logger.debug("Cluster Service removed!"); clusterContainerService = null; } } public void setConfigurationContainerService(IConfigurationContainerService service) { logger.trace("Configuration service set: {}", service); configurationService = service; } public void unsetConfigurationContainerService(IConfigurationContainerService service) { logger.trace("Configuration service removed: {}", service); configurationService = null; } private void allocateCache() { if (this.clusterContainerService == null) { logger.error("un-initialized clusterContainerService, can't create cache"); return; } logger.debug("Creating Cache for Neutron LoadBalancer"); try { // neutron caches this.clusterContainerService.createCache("neutronLoadBalancers", EnumSet.of(IClusterServices.cacheMode.NON_TRANSACTIONAL)); } catch (CacheConfigException cce) { logger.error("Cache couldn't be created for Neutron LoadBalancer - check cache mode"); } catch (CacheExistException cce) { logger.error("Cache for Neutron LoadBalancer already exists, destroy and recreate"); } logger.debug("Cache successfully created for Neutron LoadBalancer"); } @SuppressWarnings ({"unchecked"}) private void retrieveCache() { if (clusterContainerService == null) { logger.error("un-initialized clusterContainerService, can't retrieve cache"); return; } logger.debug("Retrieving cache for Neutron LoadBalancer"); loadBalancerDB = (ConcurrentMap) clusterContainerService .getCache("neutronLoadBalancers"); if (loadBalancerDB == null) { logger.error("Cache couldn't be retrieved for Neutron LoadBalancer"); } logger.debug("Cache was successfully retrieved for Neutron LoadBalancer"); } private void destroyCache() { if (clusterContainerService == null) { logger.error("un-initialized clusterMger, can't destroy cache"); return; } logger.debug("Destroying Cache for LoadBalancer"); clusterContainerService.destroyCache("neutronLoadBalancers"); } private void startUp() { allocateCache(); retrieveCache(); loadConfiguration(); } /** * Function called by the dependency manager when all the required * dependencies are satisfied */ void init(Component c) { Dictionary props = c.getServiceProperties(); if (props != null) { this.containerName = (String) props.get("containerName"); logger.debug("Running containerName: {}", this.containerName); } else { // In the Global instance case the containerName is empty this.containerName = ""; } startUp(); } /** * Function called by the dependency manager when at least one dependency * become unsatisfied or when the component is shutting down because for * example bundle is being stopped. */ void destroy() { destroyCache(); } /** * Function called by dependency manager after "init ()" is called and after * the services provided by the class are registered in the service registry */ void start() { } /** * Function called by the dependency manager before the services exported by * the component are unregistered, this will be followed by a "destroy ()" * calls */ void stop() { } // this method uses reflection to update an object from it's delta. private boolean overwrite(Object target, Object delta) { Method[] methods = target.getClass().getMethods(); for (Method toMethod : methods) { if (toMethod.getDeclaringClass().equals(target.getClass()) && toMethod.getName().startsWith("set")) { String toName = toMethod.getName(); String fromName = toName.replace("set", "get"); try { Method fromMethod = delta.getClass().getMethod(fromName); Object value = fromMethod.invoke(delta, (Object[]) null); if (value != null) { toMethod.invoke(target, value); } } catch (Exception e) { e.printStackTrace(); return false; } } } return true; } @Override public boolean neutronLoadBalancerExists(String uuid) { return loadBalancerDB.containsKey(uuid); } @Override public NeutronLoadBalancer getNeutronLoadBalancer(String uuid) { if (!neutronLoadBalancerExists(uuid)) { logger.debug("No LoadBalancer Have Been Defined"); return null; } return loadBalancerDB.get(uuid); } @Override public List getAllNeutronLoadBalancers() { Set allLoadBalancers = new HashSet(); for (Entry entry : loadBalancerDB.entrySet()) { NeutronLoadBalancer loadBalancer = entry.getValue(); allLoadBalancers.add(loadBalancer); } logger.debug("Exiting getLoadBalancers, Found {} OpenStackLoadBalancer", allLoadBalancers.size()); List ans = new ArrayList(); ans.addAll(allLoadBalancers); return ans; } @Override public boolean addNeutronLoadBalancer(NeutronLoadBalancer input) { if (neutronLoadBalancerExists(input.getLoadBalancerID())) { return false; } loadBalancerDB.putIfAbsent(input.getLoadBalancerID(), input); //TODO: add code to find INeutronLoadBalancerAware services and call newtorkCreated on them return true; } @Override public boolean removeNeutronLoadBalancer(String uuid) { if (!neutronLoadBalancerExists(uuid)) { return false; } loadBalancerDB.remove(uuid); //TODO: add code to find INeutronLoadBalancerAware services and call newtorkDeleted on them return true; } @Override public boolean updateNeutronLoadBalancer(String uuid, NeutronLoadBalancer delta) { if (!neutronLoadBalancerExists(uuid)) { return false; } NeutronLoadBalancer target = loadBalancerDB.get(uuid); return overwrite(target, delta); } @Override public boolean neutronLoadBalancerInUse(String loadBalancerUUID) { return !neutronLoadBalancerExists(loadBalancerUUID); } private void loadConfiguration() { for (ConfigurationObject conf : configurationService.retrieveConfiguration(this, FILE_NAME)) { NeutronLoadBalancer nn = (NeutronLoadBalancer) conf; loadBalancerDB.put(nn.getLoadBalancerID(), nn); } } @Override public Status saveConfiguration() { return configurationService.persistConfiguration(new ArrayList(loadBalancerDB.values()), FILE_NAME); } @Override public Object readObject(ObjectInputStream ois) throws FileNotFoundException, IOException, ClassNotFoundException { return ois.readObject(); } }