/*
- * Sone - IdentityManager.java - Copyright © 2010 David Roden
+ * Sone - IdentityManager.java - Copyright © 2010–2013 David Roden
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
package net.pterodactylus.sone.freenet.wot;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Map.Entry;
+import static com.google.common.base.Optional.fromNullable;
+import static com.google.common.collect.HashMultimap.create;
+
+import java.util.HashSet;
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.IdentityChangeDetector.IdentityProcessor;
+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;
+
/**
* The identity manager takes care of loading and storing identities, their
* contexts, and properties. It does so in a way that does not expose errors via
* exceptions but it only logs them and tries to return sensible defaults.
- * <p>
+ * <p/>
* It is also responsible for polling identities from the Web of Trust plugin
- * and notifying registered {@link IdentityListener}s when {@link Identity}s and
- * {@link OwnIdentity}s are discovered or disappearing.
+ * and sending events to the {@link EventBus} when {@link Identity}s and {@link
+ * OwnIdentity}s are discovered or disappearing.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
public class IdentityManager extends AbstractService {
- /** Object used for synchronization. */
- 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 manager. */
- private final IdentityListenerManager identityListenerManager = new IdentityListenerManager();
+ /** 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 volatile String context;
-
/** The currently known own identities. */
/* synchronize access on syncObject. */
- private Map<String, OwnIdentity> currentOwnIdentities = new HashMap<String, OwnIdentity>();
+ private final Set<OwnIdentity> currentOwnIdentities = Sets.newHashSet();
/**
* Creates a new identity manager.
*
+ * @param eventBus
+ * The event bus
* @param webOfTrustConnector
- * The Web of Trust connector
+ * The Web of Trust connector
+ * @param context
+ * The context to focus on (may be {@code null} to ignore contexts)
*/
- public IdentityManager(WebOfTrustConnector webOfTrustConnector) {
+ @Inject
+ public IdentityManager(EventBus eventBus, WebOfTrustConnector webOfTrustConnector, @Named("WebOfTrustContext") String context) {
super("Sone Identity Manager", false);
+ this.eventBus = eventBus;
this.webOfTrustConnector = webOfTrustConnector;
- }
-
- //
- // LISTENER MANAGEMENT
- //
-
- /**
- * Adds a listener for identity events.
- *
- * @param identityListener
- * The listener to add
- */
- public void addIdentityListener(IdentityListener identityListener) {
- identityListenerManager.addListener(identityListener);
- }
-
- /**
- * Removes a listener for identity events.
- *
- * @param identityListener
- * The listener to remove
- */
- public void removeIdentityListener(IdentityListener identityListener) {
- identityListenerManager.removeListener(identityListener);
+ this.identityLoader = new IdentityLoader(webOfTrustConnector, fromNullable(context));
}
//
//
/**
- * Sets the context to filter own identities and trusted identities for.
- *
- * @param context
- * The context to filter for, or {@code null} to not filter
- */
- public void setContext(String context) {
- this.context = context;
- }
-
- /**
* Returns whether the Web of Trust plugin could be reached during the last
* try.
*
- * @return {@code true} if the Web of Trust plugin is connected,
- * {@code false} otherwise
+ * @return {@code true} if the Web of Trust plugin is connected, {@code false}
+ * otherwise
*/
public boolean isConnected() {
try {
}
/**
- * 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 ownIdentity;
- }
- }
- return null;
- }
-
- /**
* Returns all own identities.
*
* @return All own identities
*/
public Set<OwnIdentity> getAllOwnIdentities() {
- try {
- Set<OwnIdentity> ownIdentities = webOfTrustConnector.loadAllOwnIdentities();
- Map<String, OwnIdentity> newOwnIdentities = new HashMap<String, OwnIdentity>();
- for (OwnIdentity ownIdentity : ownIdentities) {
- newOwnIdentities.put(ownIdentity.getId(), ownIdentity);
- }
- checkOwnIdentities(newOwnIdentities);
- return ownIdentities;
- } catch (WebOfTrustException wote1) {
- logger.log(Level.WARNING, "Could not load all own identities!", wote1);
- return Collections.emptySet();
+ synchronized (currentOwnIdentities) {
+ return new HashSet<OwnIdentity>(currentOwnIdentities);
}
}
// SERVICE METHODS
//
- /**
- * {@inheritDoc}
- */
@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();
- Set<OwnIdentity> ownIdentities = null;
- boolean identitiesLoaded = false;
+ while (!shouldStop()) {
try {
- /* get all identities with the wanted context from WoT. */
- ownIdentities = webOfTrustConnector.loadAllOwnIdentities();
-
- /* load trusted identities. */
- for (OwnIdentity ownIdentity : ownIdentities) {
- if ((context != null) && !ownIdentity.hasContext(context)) {
- continue;
- }
- currentOwnIdentities.put(ownIdentity.getId(), ownIdentity);
-
- Set<Identity> trustedIdentities = webOfTrustConnector.loadTrustedIdentities(ownIdentity, context);
- Map<String, Identity> identities = new HashMap<String, Identity>();
- currentIdentities.put(ownIdentity, identities);
- for (Identity identity : trustedIdentities) {
- identities.put(identity.getId(), identity);
- }
+ Multimap<OwnIdentity, Identity> currentIdentities = identityLoader.loadIdentities();
+
+ detectChangesInIdentities(currentIdentities, oldIdentities);
+ oldIdentities = currentIdentities;
+
+ synchronized (currentOwnIdentities) {
+ currentOwnIdentities.clear();
+ currentOwnIdentities.addAll(currentIdentities.keySet());
}
- identitiesLoaded = true;
} 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())) {
- identityListenerManager.fireIdentityAdded(ownIdentity, currentIdentity);
- }
- }
-
- /* find removed identities. */
- if (oldIdentities.containsKey(ownIdentity)) {
- for (Identity oldIdentity : oldIdentities.get(ownIdentity).values()) {
- if (!currentIdentities.get(ownIdentity).containsKey(oldIdentity.getId())) {
- identityListenerManager.fireIdentityRemoved(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()) {
- identityListenerManager.fireIdentityUpdated(ownIdentity, newIdentity);
- continue;
- }
- for (String oldContext : oldContexts) {
- if (!newContexts.contains(oldContext)) {
- identityListenerManager.fireIdentityUpdated(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()) {
- identityListenerManager.fireIdentityUpdated(ownIdentity, newIdentity);
- continue;
- }
- for (Entry<String, String> oldProperty : oldProperties.entrySet()) {
- if (!newProperties.containsKey(oldProperty.getKey()) || !newProperties.get(oldProperty.getKey()).equals(oldProperty.getValue())) {
- identityListenerManager.fireIdentityUpdated(ownIdentity, newIdentity);
- break;
- }
- }
- }
- }
- }
-
- /* remember the current set of identities. */
- oldIdentities = currentIdentities;
- }
-
/* wait a minute before checking again. */
sleep(60 * 1000);
}
}
- //
- // PRIVATE METHODS
- //
+ private void detectChangesInIdentities(Multimap<OwnIdentity, Identity> newIdentities, Multimap<OwnIdentity, Identity> oldIdentities) {
+ IdentityChangeDetector identityChangeDetector = new IdentityChangeDetector(getAllOwnIdentities());
+ identityChangeDetector.onNewIdentity(addNewOwnIdentityAndItsTrustedIdentities(newIdentities));
+ identityChangeDetector.onRemovedIdentity(removeOwnIdentityAndItsTrustedIdentities(oldIdentities));
+ identityChangeDetector.onUnchangedIdentity(detectChangesInTrustedIdentities(newIdentities, oldIdentities));
+ identityChangeDetector.detectChanges(newIdentities.keySet());
+ }
- /**
- * 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) {
+ private IdentityProcessor detectChangesInTrustedIdentities(Multimap<OwnIdentity, Identity> newIdentities, Multimap<OwnIdentity, Identity> oldIdentities) {
+ return new DefaultIdentityProcessor(oldIdentities, newIdentities);
+ }
- /* find removed own identities: */
- for (OwnIdentity oldOwnIdentity : currentOwnIdentities.values()) {
- if (!newOwnIdentities.containsKey(oldOwnIdentity.getId())) {
- identityListenerManager.fireOwnIdentityRemoved(oldOwnIdentity);
+ private IdentityProcessor removeOwnIdentityAndItsTrustedIdentities(final Multimap<OwnIdentity, Identity> oldIdentities) {
+ return new IdentityProcessor() {
+ @Override
+ public void processIdentity(Identity identity) {
+ eventBus.post(new OwnIdentityRemovedEvent((OwnIdentity) identity));
+ for (Identity removedIdentity : oldIdentities.get((OwnIdentity) identity)) {
+ eventBus.post(new IdentityRemovedEvent((OwnIdentity) identity, removedIdentity));
}
}
+ };
+ }
- /* find added own identities. */
- for (OwnIdentity currentOwnIdentity : newOwnIdentities.values()) {
- if (!currentOwnIdentities.containsKey(currentOwnIdentity.getId())) {
- identityListenerManager.fireOwnIdentityAdded(currentOwnIdentity);
+ private IdentityProcessor addNewOwnIdentityAndItsTrustedIdentities(final Multimap<OwnIdentity, Identity> newIdentities) {
+ return new IdentityProcessor() {
+ @Override
+ public void processIdentity(Identity identity) {
+ eventBus.post(new OwnIdentityAddedEvent((OwnIdentity) identity));
+ for (Identity newIdentity : newIdentities.get((OwnIdentity) identity)) {
+ eventBus.post(new IdentityAddedEvent((OwnIdentity) identity, newIdentity));
}
}
+ };
+ }
+
+ private class DefaultIdentityProcessor implements IdentityProcessor {
+
+ private final Multimap<OwnIdentity, Identity> oldIdentities;
+ private final Multimap<OwnIdentity, Identity> newIdentities;
- currentOwnIdentities.clear();
- currentOwnIdentities.putAll(newOwnIdentities);
+ public DefaultIdentityProcessor(Multimap<OwnIdentity, Identity> oldIdentities, Multimap<OwnIdentity, Identity> newIdentities) {
+ this.oldIdentities = oldIdentities;
+ this.newIdentities = newIdentities;
}
+
+ @Override
+ public void processIdentity(Identity ownIdentity) {
+ IdentityChangeDetector identityChangeDetector = new IdentityChangeDetector(oldIdentities.get((OwnIdentity) ownIdentity));
+ identityChangeDetector.onNewIdentity(notifyForAddedIdentities((OwnIdentity) ownIdentity));
+ identityChangeDetector.onRemovedIdentity(notifyForRemovedIdentities((OwnIdentity) ownIdentity));
+ identityChangeDetector.onChangedIdentity(notifyForChangedIdentities((OwnIdentity) ownIdentity));
+ identityChangeDetector.detectChanges(newIdentities.get((OwnIdentity) ownIdentity));
+ }
+
+ private IdentityProcessor notifyForChangedIdentities(final OwnIdentity ownIdentity) {
+ return new IdentityProcessor() {
+ @Override
+ public void processIdentity(Identity identity) {
+ eventBus.post(new IdentityUpdatedEvent(ownIdentity, identity));
+ }
+ };
+ }
+
+ private IdentityProcessor notifyForRemovedIdentities(final OwnIdentity ownIdentity) {
+ return new IdentityProcessor() {
+ @Override
+ public void processIdentity(Identity identity) {
+ eventBus.post(new IdentityRemovedEvent(ownIdentity, identity));
+ }
+ };
+ }
+
+ private IdentityProcessor notifyForAddedIdentities(final OwnIdentity ownIdentity) {
+ return new IdentityProcessor() {
+ @Override
+ public void processIdentity(Identity identity) {
+ eventBus.post(new IdentityAddedEvent(ownIdentity, identity));
+ }
+ };
+ }
+
}
}
projects / Sone.git / blobdiff