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