Move directory refresh from a service over to a job.

// FREEBIE

src/org/thoughtcrime/securesms/jobs/DirectoryRefreshJob.java

@@ -0,0 +1,46 @@
+package org.thoughtcrime.securesms.jobs;
+
+import android.content.Context;
+import android.os.PowerManager;
+
+import org.thoughtcrime.securesms.util.DirectoryHelper;
+import org.whispersystems.jobqueue.JobParameters;
+import org.whispersystems.jobqueue.requirements.NetworkRequirement;
+import org.whispersystems.textsecure.api.push.exceptions.PushNetworkException;
+
+import java.io.IOException;
+
+public class DirectoryRefreshJob extends ContextJob {
+
+  public DirectoryRefreshJob(Context context) {
+    super(context, JobParameters.newBuilder()
+                                .withGroupId(DirectoryRefreshJob.class.getSimpleName())
+                                .withRequirement(new NetworkRequirement(context))
+                                .create());
+  }
+
+  @Override
+  public void onAdded() {}
+
+  @Override
+  public void onRun() throws IOException {
+    PowerManager          powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+    PowerManager.WakeLock wakeLock     = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Directory Refresh");
+
+    try {
+      wakeLock.acquire();
+      DirectoryHelper.refreshDirectory(context);
+    } finally {
+      if (wakeLock.isHeld()) wakeLock.release();
+    }
+  }
+
+  @Override
+  public boolean onShouldRetry(Exception exception) {
+    if (exception instanceof PushNetworkException) return true;
+    return false;
+  }
+
+  @Override
+  public void onCanceled() {}
+}