Add identity manager changes from the refactoring branch.
[Sone.git] / src / main / java / net / pterodactylus / sone / freenet / wot / IdentityManager.java
index 6f33a4a..e89c667 100644 (file)
 
 package net.pterodactylus.sone.freenet.wot;
 
-import java.util.Collections;
-import java.util.HashMap;
+import static com.google.common.base.Optional.fromNullable;
+import static com.google.common.collect.HashMultimap.create;
+
 import java.util.HashSet;
-import java.util.Map;
-import java.util.Map.Entry;
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import net.pterodactylus.sone.freenet.plugin.PluginException;
-import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
-import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
-import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
-import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
-import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
 import net.pterodactylus.util.logging.Logging;
 import net.pterodactylus.util.service.AbstractService;
 
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Sets;
 import com.google.common.eventbus.EventBus;
 import com.google.inject.Inject;
 import com.google.inject.name.Named;
@@ -52,30 +48,19 @@ import com.google.inject.name.Named;
  */
 public class IdentityManager extends AbstractService {
 
-       /** Object used for synchronization. */
-       @SuppressWarnings("hiding")
-       private final Object syncObject = new Object() {
-               /* inner class for better lock names. */
-       };
-
        /** The logger. */
        private static final Logger logger = Logging.getLogger(IdentityManager.class);
 
        /** The event bus. */
        private final EventBus eventBus;
 
+       private final IdentityLoader identityLoader;
+
        /** The Web of Trust connector. */
        private final WebOfTrustConnector webOfTrustConnector;
 
-       /** The context to filter for. */
-       private final String context;
-
        /** The currently known own identities. */
-       /* synchronize access on syncObject. */
-       private final Map<String, OwnIdentity> currentOwnIdentities = new HashMap<String, OwnIdentity>();
-
-       /** The last time all identities were loaded. */
-       private volatile long identitiesLastLoaded;
+       private final Set<OwnIdentity> currentOwnIdentities = Sets.newHashSet();
 
        /**
         * Creates a new identity manager.
@@ -93,7 +78,7 @@ public class IdentityManager extends AbstractService {
                super("Sone Identity Manager", false);
                this.eventBus = eventBus;
                this.webOfTrustConnector = webOfTrustConnector;
-               this.context = context;
+               this.identityLoader = new IdentityLoader(webOfTrustConnector, fromNullable(context));
        }
 
        //
@@ -101,16 +86,6 @@ public class IdentityManager extends AbstractService {
        //
 
        /**
-        * Returns the last time all identities were loaded.
-        *
-        * @return The last time all identities were loaded (in milliseconds since
-        *         Jan 1, 1970 UTC)
-        */
-       public long getIdentitiesLastLoaded() {
-               return identitiesLastLoaded;
-       }
-
-       /**
         * Returns whether the Web of Trust plugin could be reached during the last
         * try.
         *
@@ -128,30 +103,13 @@ public class IdentityManager extends AbstractService {
        }
 
        /**
-        * Returns the own identity with the given ID.
-        *
-        * @param id
-        *            The ID of the own identity
-        * @return The own identity, or {@code null} if there is no such identity
-        */
-       public OwnIdentity getOwnIdentity(String id) {
-               Set<OwnIdentity> allOwnIdentities = getAllOwnIdentities();
-               for (OwnIdentity ownIdentity : allOwnIdentities) {
-                       if (ownIdentity.getId().equals(id)) {
-                               return new DefaultOwnIdentity(ownIdentity);
-                       }
-               }
-               return null;
-       }
-
-       /**
         * Returns all own identities.
         *
         * @return All own identities
         */
        public Set<OwnIdentity> getAllOwnIdentities() {
-               synchronized (syncObject) {
-                       return new HashSet<OwnIdentity>(currentOwnIdentities.values());
+               synchronized (currentOwnIdentities) {
+                       return new HashSet<OwnIdentity>(currentOwnIdentities);
                }
        }
 
@@ -164,161 +122,28 @@ public class IdentityManager extends AbstractService {
         */
        @Override
        protected void serviceRun() {
-               Map<OwnIdentity, Map<String, Identity>> oldIdentities = Collections.emptyMap();
-               while (!shouldStop()) {
-                       Map<OwnIdentity, Map<String, Identity>> currentIdentities = new HashMap<OwnIdentity, Map<String, Identity>>();
-                       Map<String, OwnIdentity> currentOwnIdentities = new HashMap<String, OwnIdentity>();
+               Multimap<OwnIdentity, Identity> oldIdentities = create();
 
-                       boolean identitiesLoaded = false;
+               while (!shouldStop()) {
                        try {
-                               /* get all identities with the wanted context from WoT. */
-                               logger.finer("Getting all Own Identities from WoT...");
-                               Set<OwnIdentity> ownIdentities = webOfTrustConnector.loadAllOwnIdentities();
-                               logger.finest(String.format("Loaded %d Own Identities.", ownIdentities.size()));
+                               Multimap<OwnIdentity, Identity> currentIdentities = identityLoader.loadIdentities();
 
-                               /* load trusted identities. */
-                               for (OwnIdentity ownIdentity : ownIdentities) {
-                                       currentOwnIdentities.put(ownIdentity.getId(), ownIdentity);
-                                       Map<String, Identity> identities = new HashMap<String, Identity>();
-                                       currentIdentities.put(ownIdentity, identities);
+                               IdentityChangeEventSender identityChangeEventSender = new IdentityChangeEventSender(eventBus, oldIdentities);
+                               identityChangeEventSender.detectChanges(currentIdentities);
 
-                                       /*
-                                        * if the context doesn’t match, skip getting trusted
-                                        * identities.
-                                        */
-                                       if ((context != null) && !ownIdentity.hasContext(context)) {
-                                               continue;
-                                       }
+                               oldIdentities = currentIdentities;
 
-                                       /* load trusted identities. */
-                                       logger.finer(String.format("Getting trusted identities for %s...", ownIdentity.getId()));
-                                       Set<Identity> trustedIdentities = webOfTrustConnector.loadTrustedIdentities(ownIdentity, context);
-                                       logger.finest(String.format("Got %d trusted identities.", trustedIdentities.size()));
-                                       for (Identity identity : trustedIdentities) {
-                                               identities.put(identity.getId(), identity);
-                                       }
+                               synchronized (currentOwnIdentities) {
+                                       currentOwnIdentities.clear();
+                                       currentOwnIdentities.addAll(currentIdentities.keySet());
                                }
-                               identitiesLoaded = true;
-                               identitiesLastLoaded = System.currentTimeMillis();
                        } catch (WebOfTrustException wote1) {
                                logger.log(Level.WARNING, "WoT has disappeared!", wote1);
                        }
 
-                       if (identitiesLoaded) {
-
-                               /* check for changes. */
-                               checkOwnIdentities(currentOwnIdentities);
-
-                               /* now check for changes in remote identities. */
-                               for (OwnIdentity ownIdentity : currentOwnIdentities.values()) {
-
-                                       /* find new identities. */
-                                       for (Identity currentIdentity : currentIdentities.get(ownIdentity).values()) {
-                                               if (!oldIdentities.containsKey(ownIdentity) || !oldIdentities.get(ownIdentity).containsKey(currentIdentity.getId())) {
-                                                       logger.finest(String.format("Identity added for %s: %s", ownIdentity.getId(), currentIdentity));
-                                                       eventBus.post(new IdentityAddedEvent(ownIdentity, currentIdentity));
-                                               }
-                                       }
-
-                                       /* find removed identities. */
-                                       if (oldIdentities.containsKey(ownIdentity)) {
-                                               for (Identity oldIdentity : oldIdentities.get(ownIdentity).values()) {
-                                                       if (!currentIdentities.get(ownIdentity).containsKey(oldIdentity.getId())) {
-                                                               logger.finest(String.format("Identity removed for %s: %s", ownIdentity.getId(), oldIdentity));
-                                                               eventBus.post(new IdentityRemovedEvent(ownIdentity, oldIdentity));
-                                                       }
-                                               }
-
-                                               /* check for changes in the contexts. */
-                                               for (Identity oldIdentity : oldIdentities.get(ownIdentity).values()) {
-                                                       if (!currentIdentities.get(ownIdentity).containsKey(oldIdentity.getId())) {
-                                                               continue;
-                                                       }
-                                                       Identity newIdentity = currentIdentities.get(ownIdentity).get(oldIdentity.getId());
-                                                       Set<String> oldContexts = oldIdentity.getContexts();
-                                                       Set<String> newContexts = newIdentity.getContexts();
-                                                       if (oldContexts.size() != newContexts.size()) {
-                                                               logger.finest(String.format("Contexts changed for %s: was: %s, is now: %s", ownIdentity.getId(), oldContexts, newContexts));
-                                                               eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity));
-                                                               continue;
-                                                       }
-                                                       for (String oldContext : oldContexts) {
-                                                               if (!newContexts.contains(oldContext)) {
-                                                                       logger.finest(String.format("Context was removed for %s: %s", ownIdentity.getId(), oldContext));
-                                                                       eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity));
-                                                                       break;
-                                                               }
-                                                       }
-                                               }
-
-                                               /* check for changes in the properties. */
-                                               for (Identity oldIdentity : oldIdentities.get(ownIdentity).values()) {
-                                                       if (!currentIdentities.get(ownIdentity).containsKey(oldIdentity.getId())) {
-                                                               continue;
-                                                       }
-                                                       Identity newIdentity = currentIdentities.get(ownIdentity).get(oldIdentity.getId());
-                                                       Map<String, String> oldProperties = oldIdentity.getProperties();
-                                                       Map<String, String> newProperties = newIdentity.getProperties();
-                                                       if (oldProperties.size() != newProperties.size()) {
-                                                               logger.finest(String.format("Properties changed for %s: was: %s, is now: %s", ownIdentity.getId(), oldProperties, newProperties));
-                                                               eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity));
-                                                               continue;
-                                                       }
-                                                       for (Entry<String, String> oldProperty : oldProperties.entrySet()) {
-                                                               if (!newProperties.containsKey(oldProperty.getKey()) || !newProperties.get(oldProperty.getKey()).equals(oldProperty.getValue())) {
-                                                                       logger.finest(String.format("Property was removed for %s: %s", ownIdentity.getId(), oldProperty));
-                                                                       eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity));
-                                                                       break;
-                                                               }
-                                                       }
-                                               }
-                                       }
-                               }
-
-                               /* remember the current set of identities. */
-                               oldIdentities = currentIdentities;
-                       }
-
                        /* wait a minute before checking again. */
                        sleep(60 * 1000);
                }
        }
 
-       //
-       // PRIVATE METHODS
-       //
-
-       /**
-        * Checks the given new list of own identities for added or removed own
-        * identities, as compared to {@link #currentOwnIdentities}.
-        *
-        * @param newOwnIdentities
-        *            The new own identities
-        */
-       private void checkOwnIdentities(Map<String, OwnIdentity> newOwnIdentities) {
-               synchronized (syncObject) {
-
-                       /* find removed own identities: */
-                       for (OwnIdentity oldOwnIdentity : currentOwnIdentities.values()) {
-                               OwnIdentity newOwnIdentity = newOwnIdentities.get(oldOwnIdentity.getId());
-                               if ((newOwnIdentity == null) || ((context != null) && oldOwnIdentity.hasContext(context) && !newOwnIdentity.hasContext(context))) {
-                                       logger.finest(String.format("Own Identity removed: %s", oldOwnIdentity));
-                                       eventBus.post(new OwnIdentityRemovedEvent(new DefaultOwnIdentity(oldOwnIdentity)));
-                               }
-                       }
-
-                       /* find added own identities. */
-                       for (OwnIdentity currentOwnIdentity : newOwnIdentities.values()) {
-                               OwnIdentity oldOwnIdentity = currentOwnIdentities.get(currentOwnIdentity.getId());
-                               if (((oldOwnIdentity == null) && ((context == null) || currentOwnIdentity.hasContext(context))) || ((oldOwnIdentity != null) && (context != null) && (!oldOwnIdentity.hasContext(context) && currentOwnIdentity.hasContext(context)))) {
-                                       logger.finest(String.format("Own Identity added: %s", currentOwnIdentity));
-                                       eventBus.post(new OwnIdentityAddedEvent(new DefaultOwnIdentity(currentOwnIdentity)));
-                               }
-                       }
-
-                       currentOwnIdentities.clear();
-                       currentOwnIdentities.putAll(newOwnIdentities);
-               }
-       }
-
 }