2 * Sone - IdentityManager.java - Copyright © 2010–2013 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sone.freenet.wot;
20 import static com.google.common.base.Optional.fromNullable;
21 import static com.google.common.collect.HashMultimap.create;
23 import java.util.HashSet;
25 import java.util.logging.Level;
26 import java.util.logging.Logger;
28 import net.pterodactylus.sone.freenet.plugin.PluginException;
29 import net.pterodactylus.util.logging.Logging;
30 import net.pterodactylus.util.service.AbstractService;
32 import com.google.common.collect.Multimap;
33 import com.google.common.collect.Sets;
34 import com.google.common.eventbus.EventBus;
35 import com.google.inject.Inject;
38 * The identity manager takes care of loading and storing identities, their
39 * contexts, and properties. It does so in a way that does not expose errors via
40 * exceptions but it only logs them and tries to return sensible defaults.
42 * It is also responsible for polling identities from the Web of Trust plugin
43 * and sending events to the {@link EventBus} when {@link Identity}s and
44 * {@link OwnIdentity}s are discovered or disappearing.
46 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
48 public class IdentityManager extends AbstractService {
51 private static final Logger logger = Logging.getLogger(IdentityManager.class);
54 private final EventBus eventBus;
56 private final IdentityLoader identityLoader;
58 /** The Web of Trust connector. */
59 private final WebOfTrustConnector webOfTrustConnector;
61 /** The currently known own identities. */
62 private final Set<OwnIdentity> currentOwnIdentities = Sets.newHashSet();
65 * Creates a new identity manager.
69 * @param webOfTrustConnector
70 * The Web of Trust connector
73 public IdentityManager(EventBus eventBus, WebOfTrustConnector webOfTrustConnector, IdentityLoader identityLoader) {
74 super("Sone Identity Manager", false);
75 this.eventBus = eventBus;
76 this.webOfTrustConnector = webOfTrustConnector;
77 this.identityLoader = identityLoader;
85 * Returns whether the Web of Trust plugin could be reached during the last
88 * @return {@code true} if the Web of Trust plugin is connected,
89 * {@code false} otherwise
91 public boolean isConnected() {
93 webOfTrustConnector.ping();
95 } catch (PluginException pe1) {
96 /* not connected, ignore. */
102 * Returns all own identities.
104 * @return All own identities
106 public Set<OwnIdentity> getAllOwnIdentities() {
107 synchronized (currentOwnIdentities) {
108 return new HashSet<OwnIdentity>(currentOwnIdentities);
120 protected void serviceRun() {
121 Multimap<OwnIdentity, Identity> oldIdentities = create();
123 while (!shouldStop()) {
125 Multimap<OwnIdentity, Identity> currentIdentities = identityLoader.loadIdentities();
127 IdentityChangeEventSender identityChangeEventSender = new IdentityChangeEventSender(eventBus, oldIdentities);
128 identityChangeEventSender.detectChanges(currentIdentities);
130 oldIdentities = currentIdentities;
132 synchronized (currentOwnIdentities) {
133 currentOwnIdentities.clear();
134 currentOwnIdentities.addAll(currentIdentities.keySet());
136 } catch (WebOfTrustException wote1) {
137 logger.log(Level.WARNING, "WoT has disappeared!", wote1);
140 /* wait a minute before checking again. */