Exemplo n.º 1
0
  @Override
  public void peerInserted(final PeerAddress peerAddress, final boolean verified) {
    if (!isReplicationEnabled() || !verified) {
      return;
    }
    LOG.debug("The peer {} was inserted in my map. I'm {}", peerAddress, selfAddress);
    // check if we should change responsibility.
    Collection<Number160> myResponsibleLocations =
        replicationStorage.findContentForResponsiblePeerID(selfAddress.getPeerId());
    LOG.debug("I ({}) am currently responsibel for {}", selfAddress, myResponsibleLocations);

    for (Number160 myResponsibleLocation : myResponsibleLocations) {
      PeerAddress closest = closest(myResponsibleLocation);
      if (!closest.getPeerId().equals(selfAddress.getPeerId())) {
        if (replicationStorage.updateResponsibilities(myResponsibleLocation, closest.getPeerId())) {
          // notify that someone else is now responsible for the
          // content with key responsibleLocations
          notifyOtherResponsible(myResponsibleLocation, closest, false);
          // cancel any pending notifyMeResponsible*, as we are not responsible anymore.
        }
      } else if (isInReplicationRange(myResponsibleLocation, peerAddress, replicationFactor)) {
        // we are still responsible, but a new peer joined and if it is within the x close peers, we
        // need to
        // replicate
        if (replicationStorage.updateResponsibilities(
            myResponsibleLocation, selfAddress.getPeerId())) {
          // I figured out I'm the new responsible, so check all my peer in the replication range
          notifyMeResponsible(myResponsibleLocation);
        } else {
          // new peer joined, I'm responsible, so replicate to that peer
          notifyMeResponsible(myResponsibleLocation, peerAddress);
        }
      }
    }
  }
Exemplo n.º 2
0
 /**
  * Update responsibilities. This happens for a put / add.
  *
  * @param locationKey The location key.
  */
 public void updateAndNotifyResponsibilities(final Number160 locationKey) {
   if (!isReplicationEnabled()) {
     return;
   }
   PeerAddress closest = closest(locationKey);
   if (closest.getPeerId().equals(selfAddress.getPeerId())) {
     if (replicationStorage.updateResponsibilities(locationKey, closest.getPeerId())) {
       // I am responsible for this content
       notifyMeResponsible(locationKey);
     }
   } else {
     if (replicationStorage.updateResponsibilities(locationKey, closest.getPeerId())) {
       // notify that someone else is now responsible for the
       // content with key responsibleLocations
       notifyOtherResponsible(locationKey, closest, false);
     }
   }
 }
Exemplo n.º 3
0
 @Override
 public void peerRemoved(final PeerAddress peerAddress, final PeerStatatistic peerStatatistic) {
   if (!isReplicationEnabled()) {
     return;
   }
   // check if we should change responsibility.
   Collection<Number160> otherResponsibleLocations =
       replicationStorage.findContentForResponsiblePeerID(peerAddress.getPeerId());
   Collection<Number160> myResponsibleLocations =
       replicationStorage.findContentForResponsiblePeerID(selfAddress.getPeerId());
   // check if we are now responsible for content where the other peer was responsible
   for (Number160 otherResponsibleLocation : otherResponsibleLocations) {
     PeerAddress closest = closest(otherResponsibleLocation);
     if (closest.getPeerId().equals(selfAddress.getPeerId())) {
       if (replicationStorage.updateResponsibilities(
           otherResponsibleLocation, closest.getPeerId())) {
         // notify that someone I'm now responsible for the
         // content
         // with key responsibleLocations
         notifyMeResponsible(otherResponsibleLocation);
         // we don't need to check this again, so remove it from the list if present
         myResponsibleLocations.remove(otherResponsibleLocation);
       }
     } else {
       if (replicationStorage.updateResponsibilities(
           otherResponsibleLocation, closest.getPeerId())) {
         LOG.debug("We should check if the closer peer has the content");
         notifyOtherResponsible(otherResponsibleLocation, closest, true);
       }
     }
   }
   // now check for our responsibilities. If a peer is gone and it was in the replication range, we
   // need make sure
   // we have enough copies
   for (Number160 myResponsibleLocation : myResponsibleLocations) {
     if (isInReplicationRange(myResponsibleLocation, peerAddress, replicationFactor)) {
       notifyMeResponsible(myResponsibleLocation);
     }
   }
 }