2 * Sone - IdentityLoader.java - Copyright © 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.collect.HashMultimap.create;
21 import static net.pterodactylus.sone.freenet.wot.Context.extractContext;
23 import java.util.Collection;
26 import javax.annotation.Nullable;
28 import net.pterodactylus.sone.freenet.plugin.PluginException;
30 import com.google.common.base.Function;
31 import com.google.common.base.Optional;
32 import com.google.common.collect.Multimap;
35 * Loads {@link OwnIdentity}s and the {@link Identity}s they trust.
37 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
39 public class IdentityLoader {
41 private final WebOfTrustConnector webOfTrustConnector;
42 private final Optional<Context> context;
44 public IdentityLoader(WebOfTrustConnector webOfTrustConnector) {
45 this(webOfTrustConnector, Optional.<Context>absent());
48 public IdentityLoader(WebOfTrustConnector webOfTrustConnector, Optional<Context> context) {
49 this.webOfTrustConnector = webOfTrustConnector;
50 this.context = context;
53 public Multimap<OwnIdentity, Identity> loadIdentities() throws WebOfTrustException {
54 Collection<OwnIdentity> currentOwnIdentities = webOfTrustConnector.loadAllOwnIdentities();
55 return loadTrustedIdentitiesForOwnIdentities(currentOwnIdentities);
58 private Multimap<OwnIdentity, Identity> loadTrustedIdentitiesForOwnIdentities(Collection<OwnIdentity> ownIdentities) throws PluginException {
59 Multimap<OwnIdentity, Identity> currentIdentities = create();
61 for (OwnIdentity ownIdentity : ownIdentities) {
62 if (identityDoesNotHaveTheCorrectContext(ownIdentity)) {
66 Set<Identity> trustedIdentities = webOfTrustConnector.loadTrustedIdentities(ownIdentity, context.transform(extractContext));
67 currentIdentities.putAll(ownIdentity, trustedIdentities);
70 return currentIdentities;
73 private boolean identityDoesNotHaveTheCorrectContext(OwnIdentity ownIdentity) {
74 return context.isPresent() && !ownIdentity.hasContext(context.transform(extractContext).get());