src/main/java/net/pterodactylus/sone/freenet/wot/IdentityLoader.java

   1 /*
   2  * Sone - IdentityLoader.java - Copyright © 2013–2019 David Roden
   3  *
   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.
   8  *
   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.
  13  *
  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/>.
  16  */
  17
  18 package net.pterodactylus.sone.freenet.wot;
  19
  20 import static java.util.concurrent.TimeUnit.*;
  21 import static net.pterodactylus.sone.freenet.wot.Context.*;
  22
  23 import java.util.*;
  24 import java.util.logging.*;
  25
  26 import net.pterodactylus.sone.freenet.plugin.*;
  27
  28 import com.google.common.base.Optional;
  29 import com.google.common.base.*;
  30 import com.google.inject.*;
  31
  32 /**
  33  * Loads {@link OwnIdentity}s and the {@link Identity}s they trust.
  34  */
  35 public class IdentityLoader {
  36
  37         private final Logger logger = Logger.getLogger(IdentityLoader.class.getName());
  38         private final WebOfTrustConnector webOfTrustConnector;
  39         private final Optional<Context> context;
  40
  41         public IdentityLoader(WebOfTrustConnector webOfTrustConnector) {
  42                 this(webOfTrustConnector, Optional.<Context>absent());
  43         }
  44
  45         @Inject
  46         public IdentityLoader(WebOfTrustConnector webOfTrustConnector, Optional<Context> context) {
  47                 this.webOfTrustConnector = webOfTrustConnector;
  48                 this.context = context;
  49         }
  50
  51         public Map<OwnIdentity, Collection<Identity>> loadIdentities() throws WebOfTrustException {
  52                 Stopwatch stopwatch = Stopwatch.createStarted();
  53                 Collection<OwnIdentity> currentOwnIdentities = webOfTrustConnector.loadAllOwnIdentities();
  54                 logger.fine("Loaded " + currentOwnIdentities.size() + " own identities in " + (stopwatch.elapsed(MILLISECONDS) / 1000.0) + "s.");
  55                 return loadTrustedIdentitiesForOwnIdentities(currentOwnIdentities);
  56         }
  57
  58         private Map<OwnIdentity, Collection<Identity>> loadTrustedIdentitiesForOwnIdentities(Collection<OwnIdentity> ownIdentities) throws PluginException {
  59                 Map<OwnIdentity, Collection<Identity>> currentIdentities = new HashMap<>();
  60
  61                 for (OwnIdentity ownIdentity : ownIdentities) {
  62                         if (identityDoesNotHaveTheCorrectContext(ownIdentity)) {
  63                                 currentIdentities.put(ownIdentity, Collections.<Identity>emptySet());
  64                                 continue;
  65                         }
  66
  67                         Stopwatch stopwatch = Stopwatch.createStarted();
  68                         Set<Identity> trustedIdentities = webOfTrustConnector.loadTrustedIdentities(ownIdentity, context.transform(extractContext));
  69                         logger.fine("Loaded " + trustedIdentities.size() + " identities for " + ownIdentity.getNickname() + " in " + (stopwatch.elapsed(MILLISECONDS) / 1000.0) + "s.");
  70                         currentIdentities.put(ownIdentity, trustedIdentities);
  71                 }
  72
  73                 return currentIdentities;
  74         }
  75
  76         private boolean identityDoesNotHaveTheCorrectContext(OwnIdentity ownIdentity) {
  77                 return context.isPresent() && !ownIdentity.hasContext(context.transform(extractContext).get());
  78         }
  79
  80 }