Java tutorial
/** * Copyright (C) 2008 Progress Software, Inc. All rights reserved. * http://fusesource.com * * The software in this package is published under the terms of the AGPL license * a copy of which has been included with this distribution in the license.txt file. */ package org.fusesource.cloudmix.controller.configadmindataprovider; import java.util.ArrayList; import java.util.Collection; import java.util.Dictionary; import java.util.List; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.fusesource.cloudmix.common.ControllerDataProvider; import org.fusesource.cloudmix.common.GridController; import org.fusesource.cloudmix.common.controller.AgentController; import org.fusesource.cloudmix.common.controller.FeatureController; import org.fusesource.cloudmix.common.controller.ProfileController; import org.fusesource.cloudmix.common.dto.Dependency; import org.fusesource.cloudmix.common.dto.FeatureDetails; import org.fusesource.cloudmix.common.dto.ProfileDetails; import org.osgi.service.cm.ConfigurationException; import org.osgi.service.cm.ManagedService; public class ConfigAdminControllerDataProvider implements ControllerDataProvider, ManagedService { private static final Log LOG = LogFactory.getLog(ConfigAdminControllerDataProvider.class); private ConcurrentMap<String, AgentController> agents = new ConcurrentHashMap<String, AgentController>(); private ConcurrentMap<String, FeatureController> features = new ConcurrentHashMap<String, FeatureController>(); private ConcurrentMap<String, ProfileController> profiles = new ConcurrentHashMap<String, ProfileController>(); private GridController grid; public ConfigAdminControllerDataProvider() { } public void updated(Dictionary dictionary) throws ConfigurationException { LOG.info("Updating controller data provider"); loadFeatures(dictionary); loadProfiles(dictionary); } protected void loadFeatures(Dictionary dictionary) { int numFeatures = Integer.parseInt((String) dictionary.get("features")); for (int i = 1; i <= numFeatures; i++) { String name = (String) dictionary.get("feature." + i + ".name"); String url = (String) dictionary.get("feature." + i + ".url"); FeatureDetails fd = new FeatureDetails(name, url); String deps = (String) dictionary.get("feature." + i + ".deps"); if (deps != null) { List<Dependency> dependencies = new ArrayList<Dependency>(); for (String dep : deps.split(",")) { Dependency d = new Dependency(); d.setFeatureId(dep); dependencies.add(d); } fd.setDependencies(dependencies); } FeatureController fc = new FeatureController(grid, fd); addFeature(name, fc); } } protected void loadProfiles(Dictionary dictionary) { int numProfiles = Integer.parseInt((String) dictionary.get("profiles")); for (int i = 1; i <= numProfiles; i++) { String name = (String) dictionary.get("profile." + i + ".name"); ProfileDetails pd = new ProfileDetails(name); String feats = (String) dictionary.get("profile." + i + ".features"); if (feats != null) { List<Dependency> profileFeatures = new ArrayList<Dependency>(); for (String feat : feats.split(",")) { Dependency f = new Dependency(); f.setFeatureId(feat); profileFeatures.add(f); } pd.setFeatures(profileFeatures); } ProfileController pc = new ProfileController(grid, pd); addProfile(name, pc); } } public AgentController addAgent(String id, AgentController agent) { return agents.putIfAbsent(id, agent); } public AgentController getAgent(String agentId) { return agents.get(agentId); } public AgentController removeAgent(String agentId) { return agents.remove(agentId); } public AgentController updateAgent(String id, AgentController agent) { synchronized (agents) { removeAgent(id); return addAgent(id, agent); } } public Collection<FeatureController> getFeatures() { return features.values(); } public FeatureController getFeature(String featureId) { return features.get(featureId); } public FeatureController addFeature(String id, FeatureController featureController) { return features.putIfAbsent(id, featureController); } public FeatureController removeFeature(String featureId) { return features.remove(featureId); } public Collection<AgentController> getAgents() { return agents.values(); } public ProfileController getProfile(String profileId) { return profiles.get(profileId); } public ProfileController addProfile(String id, ProfileController profileController) { return profiles.putIfAbsent(id, profileController); } public ProfileController removeProfile(String profileId) { return profiles.remove(profileId); } public Collection<ProfileController> getProfiles() { return profiles.values(); } public GridController getGrid() { return grid; } public void setGrid(GridController g) { grid = g; } }