X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Ffreenet%2Fwot%2FIdentityManager.java;h=fc77b2da82b76939b9c4742d5253aec95d6803be;hp=e416cd140db6bf00439a6d6a4ceec8feba8cc5e1;hb=8c1a4ad1d3f11ba0a11a077c47df48425360e0ac;hpb=97cc5d173db6b98489c469af2b9e621030a86c53 diff --git a/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityManager.java b/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityManager.java index e416cd1..fc77b2d 100644 --- a/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityManager.java +++ b/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityManager.java @@ -1,5 +1,5 @@ /* - * Sone - IdentityManager.java - Copyright © 2010 David Roden + * Sone - IdentityManager.java - Copyright © 2010–2012 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 @@ -19,78 +19,81 @@ package net.pterodactylus.sone.freenet.wot; import java.util.Collections; import java.util.HashMap; +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.util.filter.Filter; -import net.pterodactylus.util.filter.Filters; +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.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. *

* It is also responsible for polling identities from the Web of Trust plugin - * and notifying registered {@link IdentityListener}s when {@link Identity}s and + * and sending events to the {@link EventBus} when {@link Identity}s and * {@link OwnIdentity}s are discovered or disappearing. * * @author David ‘Bombe’ Roden */ 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 manager. */ - private final IdentityListenerManager identityListenerManager = new IdentityListenerManager(); + /** The event bus. */ + private final EventBus eventBus; /** The Web of Trust connector. */ private final WebOfTrustConnector webOfTrustConnector; /** The context to filter for. */ - private volatile String context; + private final String context; - /** Whether the Web of Trust plugin is connected. */ - private volatile boolean wotPluginConnected = false; + /** The currently known own identities. */ + /* synchronize access on syncObject. */ + private final Map currentOwnIdentities = new HashMap(); + + /** The last time all identities were loaded. */ + private volatile long identitiesLastLoaded; /** * Creates a new identity manager. * + * @param eventBus + * The event bus * @param webOfTrustConnector * 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.context = context; } // @@ -98,13 +101,13 @@ public class IdentityManager extends AbstractService { // /** - * Sets the context to filter own identities and trusted identities for. + * Returns the last time all identities were loaded. * - * @param context - * The context to filter for, or {@code null} to not filter + * @return The last time all identities were loaded (in milliseconds since + * Jan 1, 1970 UTC) */ - public void setContext(String context) { - this.context = context; + public long getIdentitiesLastLoaded() { + return identitiesLastLoaded; } /** @@ -115,7 +118,13 @@ public class IdentityManager extends AbstractService { * {@code false} otherwise */ public boolean isConnected() { - return wotPluginConnected; + try { + webOfTrustConnector.ping(); + return true; + } catch (PluginException pe1) { + /* not connected, ignore. */ + return false; + } } /** @@ -129,7 +138,7 @@ public class IdentityManager extends AbstractService { Set allOwnIdentities = getAllOwnIdentities(); for (OwnIdentity ownIdentity : allOwnIdentities) { if (ownIdentity.getId().equals(id)) { - return ownIdentity; + return new DefaultOwnIdentity(ownIdentity); } } return null; @@ -141,103 +150,7 @@ public class IdentityManager extends AbstractService { * @return All own identities */ public Set getAllOwnIdentities() { - try { - Set allOwnIdentities = webOfTrustConnector.loadAllOwnIdentities(); - wotPluginConnected = true; - return allOwnIdentities; - } catch (PluginException pe1) { - logger.log(Level.WARNING, "Could not load all own identities!", pe1); - wotPluginConnected = false; - return Collections.emptySet(); - } - } - - // - // ACTIONS - // - - /** - * Adds a context to the given own identity. - * - * @param ownIdentity - * The own identity - * @param context - * The context to add - */ - public void addContext(OwnIdentity ownIdentity, String context) { - if (ownIdentity.hasContext(context)) { - return; - } - try { - webOfTrustConnector.addContext(ownIdentity, context); - wotPluginConnected = true; - ownIdentity.addContext(context); - } catch (PluginException pe1) { - logger.log(Level.WARNING, "Could not add context " + context + " to OwnIdentity " + ownIdentity + ".", pe1); - wotPluginConnected = false; - } - } - - /** - * Removes a context from the given own identity. - * - * @param ownIdentity - * The own identity - * @param context - * The context to remove - */ - public void removeContext(OwnIdentity ownIdentity, String context) { - if (!ownIdentity.hasContext(context)) { - return; - } - try { - webOfTrustConnector.removeContext(ownIdentity, context); - wotPluginConnected = true; - ownIdentity.removeContext(context); - } catch (PluginException pe1) { - logger.log(Level.WARNING, "Could not remove context " + context + " from OwnIdentity " + ownIdentity + ".", pe1); - wotPluginConnected = false; - } - } - - /** - * Sets the property with the given name to the given value. - * - * @param ownIdentity - * The own identity - * @param name - * The name of the property - * @param value - * The value of the property - */ - public void setProperty(OwnIdentity ownIdentity, String name, String value) { - try { - webOfTrustConnector.setProperty(ownIdentity, name, value); - wotPluginConnected = true; - ownIdentity.setProperty(name, value); - } catch (PluginException pe1) { - logger.log(Level.WARNING, "Could not set property “" + name + "” to “" + value + "” for OwnIdentity: " + ownIdentity, pe1); - wotPluginConnected = false; - } - } - - /** - * Removes the property with the given name. - * - * @param ownIdentity - * The own identity - * @param name - * The name of the property to remove - */ - public void removeProperty(OwnIdentity ownIdentity, String name) { - try { - webOfTrustConnector.removeProperty(ownIdentity, name); - wotPluginConnected = true; - ownIdentity.removeProperty(name); - } catch (PluginException pe1) { - logger.log(Level.WARNING, "Could not remove property “" + name + "” from OwnIdentity: " + ownIdentity, pe1); - wotPluginConnected = false; - } + return new HashSet(currentOwnIdentities.values()); } // @@ -249,85 +162,110 @@ public class IdentityManager extends AbstractService { */ @Override protected void serviceRun() { - Map oldIdentities = Collections.emptyMap(); - Map oldOwnIdentities = Collections.emptyMap(); + Map> oldIdentities = Collections.emptyMap(); while (!shouldStop()) { - Map currentIdentities = new HashMap(); + Map> currentIdentities = new HashMap>(); Map currentOwnIdentities = new HashMap(); - /* get all identities with the wanted context from WoT. */ - Set ownIdentities; + Set ownIdentities = null; + boolean identitiesLoaded = false; try { - ownIdentities = Filters.filteredSet(webOfTrustConnector.loadAllOwnIdentities(), new Filter() { - - @Override - @SuppressWarnings("synthetic-access") - public boolean filterObject(OwnIdentity ownIdentity) { - return (context == null) || ownIdentity.hasContext(context); - } + /* get all identities with the wanted context from WoT. */ + ownIdentities = webOfTrustConnector.loadAllOwnIdentities(); - }); + /* load trusted identities. */ for (OwnIdentity ownIdentity : ownIdentities) { currentOwnIdentities.put(ownIdentity.getId(), ownIdentity); - for (Identity identity : webOfTrustConnector.loadTrustedIdentities(ownIdentity, context)) { - currentIdentities.put(identity.getId(), identity); + Map identities = new HashMap(); + currentIdentities.put(ownIdentity, identities); + + /* + * if the context doesn’t match, skip getting trusted + * identities. + */ + if ((context != null) && !ownIdentity.hasContext(context)) { + continue; } - } - /* find removed own identities: */ - for (OwnIdentity oldOwnIdentity : oldOwnIdentities.values()) { - if (!currentOwnIdentities.containsKey(oldOwnIdentity.getId())) { - identityListenerManager.fireOwnIdentityRemoved(oldOwnIdentity); + /* load trusted identities. */ + Set trustedIdentities = webOfTrustConnector.loadTrustedIdentities(ownIdentity, context); + for (Identity identity : trustedIdentities) { + identities.put(identity.getId(), identity); } } + identitiesLoaded = true; + identitiesLastLoaded = System.currentTimeMillis(); + } catch (WebOfTrustException wote1) { + logger.log(Level.WARNING, "WoT has disappeared!", wote1); + } - /* find added own identities. */ - for (OwnIdentity currentOwnIdentity : currentOwnIdentities.values()) { - if (!oldOwnIdentities.containsKey(currentOwnIdentity.getId())) { - identityListenerManager.fireOwnIdentityAdded(currentOwnIdentity); - } - } + if (identitiesLoaded) { - /* find removed identities. */ - for (Identity oldIdentity : oldIdentities.values()) { - if (!currentIdentities.containsKey(oldIdentity.getId())) { - identityListenerManager.fireIdentityRemoved(oldIdentity); - } - } + /* check for changes. */ + checkOwnIdentities(currentOwnIdentities); - /* find new identities. */ - for (Identity currentIdentity : currentIdentities.values()) { - if (!oldIdentities.containsKey(currentIdentity.getId())) { - identityListenerManager.fireIdentityAdded(currentIdentity); - } - } + /* now check for changes in remote identities. */ + for (OwnIdentity ownIdentity : currentOwnIdentities.values()) { - /* check for changes in the properties. */ - for (Identity oldIdentity : oldIdentities.values()) { - if (!currentIdentities.containsKey(oldIdentity.getId())) { - continue; - } - Identity newIdentity = currentIdentities.get(oldIdentity.getId()); - Map oldProperties = oldIdentity.getProperties(); - Map newProperties = newIdentity.getProperties(); - if (oldProperties.size() != newProperties.size()) { - identityListenerManager.fireIdentityUpdated(newIdentity); - continue; + /* find new identities. */ + for (Identity currentIdentity : currentIdentities.get(ownIdentity).values()) { + if (!oldIdentities.containsKey(ownIdentity) || !oldIdentities.get(ownIdentity).containsKey(currentIdentity.getId())) { + eventBus.post(new IdentityAddedEvent(ownIdentity, currentIdentity)); + } } - for (Entry oldProperty : oldProperties.entrySet()) { - if (!newProperties.containsKey(oldProperty.getKey()) || !newProperties.get(oldProperty.getKey()).equals(oldProperty.getValue())) { - identityListenerManager.fireIdentityUpdated(newIdentity); - break; + + /* find removed identities. */ + if (oldIdentities.containsKey(ownIdentity)) { + for (Identity oldIdentity : oldIdentities.get(ownIdentity).values()) { + if (!currentIdentities.get(ownIdentity).containsKey(oldIdentity.getId())) { + 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 oldContexts = oldIdentity.getContexts(); + Set newContexts = newIdentity.getContexts(); + if (oldContexts.size() != newContexts.size()) { + eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity)); + continue; + } + for (String oldContext : oldContexts) { + if (!newContexts.contains(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 oldProperties = oldIdentity.getProperties(); + Map newProperties = newIdentity.getProperties(); + if (oldProperties.size() != newProperties.size()) { + eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity)); + continue; + } + for (Entry oldProperty : oldProperties.entrySet()) { + if (!newProperties.containsKey(oldProperty.getKey()) || !newProperties.get(oldProperty.getKey()).equals(oldProperty.getValue())) { + eventBus.post(new IdentityUpdatedEvent(ownIdentity, newIdentity)); + break; + } + } } } } /* remember the current set of identities. */ oldIdentities = currentIdentities; - oldOwnIdentities = currentOwnIdentities; - - } catch (PluginException pe1) { - logger.log(Level.WARNING, "WoT has disappeared!", pe1); } /* wait a minute before checking again. */ @@ -335,4 +273,39 @@ public class IdentityManager extends AbstractService { } } + // + // 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 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))) { + 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)))) { + eventBus.post(new OwnIdentityAddedEvent(new DefaultOwnIdentity(currentOwnIdentity))); + } + } + + currentOwnIdentities.clear(); + currentOwnIdentities.putAll(newOwnIdentities); + } + } + }