Implement adding of contexts.

[Sone.git] / src / main / java / net / pterodactylus / sone / core / WebOfTrustUpdater.java

diff --git a/src/main/java/net/pterodactylus/sone/core/WebOfTrustUpdater.java b/src/main/java/net/pterodactylus/sone/core/WebOfTrustUpdater.java
index 0ee5a2c..59abc8e 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/core/WebOfTrustUpdater.java
+++ b/src/main/java/net/pterodactylus/sone/core/WebOfTrustUpdater.java
@@ -31,6 +31,7 @@ import net.pterodactylus.sone.freenet.wot.WebOfTrustConnector;
 import net.pterodactylus.sone.freenet.wot.WebOfTrustException;
 import net.pterodactylus.util.logging.Logging;
 import net.pterodactylus.util.service.AbstractService;
+import net.pterodactylus.util.validation.Validation;
 
 /**
  * Updates WebOfTrust identity data in a background thread because communicating
@@ -118,6 +119,70 @@ public class WebOfTrustUpdater extends AbstractService {
                }
        }
 
+       /**
+        * Adds the given context to the given own identity.
+        *
+        * @param ownIdentity
+        *            The own identity to add the context to
+        * @param context
+        *            The context to add
+        */
+       public void addContext(OwnIdentity ownIdentity, String context) {
+               addContextWait(ownIdentity, context, false);
+       }
+
+       /**
+        * Adds the given context to the given own identity, waiting for completion
+        * of the operation.
+        *
+        * @param ownIdentity
+        *            The own identity to add the context to
+        * @param context
+        *            The context to add
+        * @return {@code true} if the context was added successfully, {@code false}
+        *         otherwise
+        */
+       public boolean addContextWait(OwnIdentity ownIdentity, String context) {
+               return addContextWait(ownIdentity, context, true);
+       }
+
+       /**
+        * Adds the given context to the given own identity, waiting for completion
+        * of the operation.
+        *
+        * @param ownIdentity
+        *            The own identity to add the context to
+        * @param context
+        *            The context to add
+        * @param wait
+        *            {@code true} to wait for the end of the operation,
+        *            {@code false} to return immediately
+        * @return {@code true} if the context was added successfully, {@code false}
+        *         if the context was not added successfully, or if the job should
+        *         not wait for completion
+        */
+       private boolean addContextWait(OwnIdentity ownIdentity, String context, boolean wait) {
+               AddContextJob addContextJob = new AddContextJob(ownIdentity, context);
+               if (!updateJobs.contains(addContextJob)) {
+                       logger.log(Level.FINER, "Adding Context Job: " + addContextJob);
+                       try {
+                               updateJobs.put(addContextJob);
+                       } catch (InterruptedException ie1) {
+                               /* the queue is unbounded so it should never block. */
+                       }
+                       if (wait) {
+                               return addContextJob.waitForCompletion();
+                       }
+               } else if (wait) {
+                       for (WebOfTrustUpdateJob updateJob : updateJobs) {
+                               if (updateJob.equals(addContextJob)) {
+                                       return updateJob.waitForCompletion();
+                               }
+                       }
+               }
+               return false;
+       }
+
        //
        // SERVICE METHODS
        //
@@ -386,6 +451,106 @@ public class WebOfTrustUpdater extends AbstractService {
                                finish(false);
                        }
                }
+
+       }
+
+       /**
+        * Base class for context updates of an {@link OwnIdentity}.
+        *
+        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+        */
+       private class WebOfTrustContextUpdateJob extends WebOfTrustUpdateJob {
+
+               /** The own identity whose contexts to manage. */
+               protected final OwnIdentity ownIdentity;
+
+               /** The context to update. */
+               protected final String context;
+
+               /**
+                * Creates a new context update job.
+                *
+                * @param ownIdentity
+                *            The own identity to update
+                * @param context
+                *            The context to update
+                */
+               @SuppressWarnings("synthetic-access")
+               public WebOfTrustContextUpdateJob(OwnIdentity ownIdentity, String context) {
+                       Validation.begin().isNotNull("OwnIdentity", ownIdentity).isNotNull("Context", context).check();
+                       this.ownIdentity = ownIdentity;
+                       this.context = context;
+               }
+
+               //
+               // OBJECT METHODS
+               //
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public boolean equals(Object object) {
+                       if ((object == null) || !object.getClass().equals(getClass())) {
+                               return false;
+                       }
+                       WebOfTrustContextUpdateJob updateJob = (WebOfTrustContextUpdateJob) object;
+                       return updateJob.ownIdentity.equals(ownIdentity) && updateJob.context.equals(context);
+               }
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public int hashCode() {
+                       return getClass().hashCode() ^ ownIdentity.hashCode() ^ context.hashCode();
+               }
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public String toString() {
+                       return String.format("%s[ownIdentity=%s,context=%s]", getClass().getSimpleName(), ownIdentity, context);
+               }
+
+       }
+
+       /**
+        * Job that adds a context to an {@link OwnIdentity}.
+        *
+        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+        */
+       private class AddContextJob extends WebOfTrustContextUpdateJob {
+
+               /**
+                * Creates a new add-context job.
+                *
+                * @param ownIdentity
+                *            The own identity whose contexts to manage
+                * @param context
+                *            The context to add
+                */
+               public AddContextJob(OwnIdentity ownIdentity, String context) {
+                       super(ownIdentity, context);
+               }
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               @SuppressWarnings("synthetic-access")
+               public void run() {
+                       try {
+                               webOfTrustConnector.addContext(ownIdentity, context);
+                               ownIdentity.addContext(context);
+                               finish(true);
+                       } catch (PluginException pe1) {
+                               logger.log(Level.WARNING, String.format("Could not add Context “%2$s” to Own Identity %1$s!", ownIdentity, context), pe1);
+                               finish(false);
+                       }
+               }
+
        }
 
 }