Examples with ClusterMetadataEvent io.atomix.cluster.ClusterMetadataEvent used on opensource projects

Example 1 with ClusterMetadataEvent

use of io.atomix.cluster.ClusterMetadataEvent in project atomix by atomix.

the class DefaultClusterMetadataService method handleUpdate.

/**
 * Handles an update from another node.
 */
private void handleUpdate(Endpoint endpoint, byte[] payload) {
    NodeUpdate update = SERIALIZER.decode(payload);
    clock.incrementAndUpdate(update.timestamp());
    ReplicatedNode node = nodes.get(update.node().id());
    if (node == null || node.timestamp().isOlderThan(update.timestamp())) {
        nodes.put(update.node().id(), update.node());
        post(new ClusterMetadataEvent(ClusterMetadataEvent.Type.METADATA_CHANGED, getMetadata()));
    }
}

Example 2 with ClusterMetadataEvent

use of io.atomix.cluster.ClusterMetadataEvent in project atomix by atomix.

the class DefaultClusterMetadataService method handleAdvertisement.

/**
 * Handles an anti-entropy advertisement.
 */
private byte[] handleAdvertisement(Endpoint endpoint, byte[] payload) {
    LogicalTimestamp timestamp = clock.increment();
    ClusterMetadataAdvertisement advertisement = SERIALIZER.decode(payload);
    Set<NodeId> staleNodes = nodes.values().stream().map(node -> {
        NodeDigest digest = advertisement.digest(node.id());
        if (digest == null || node.isNewerThan(digest.timestamp())) {
            sendUpdate(endpoint, new NodeUpdate(node, timestamp));
        } else if (digest.isNewerThan(node.timestamp())) {
            if (digest.tombstone()) {
                if (!node.tombstone()) {
                    nodes.put(node.id(), new ReplicatedNode(node.id(), node.type(), node.endpoint(), node.zone(), node.rack(), node.host(), digest.timestamp(), true));
                    post(new ClusterMetadataEvent(ClusterMetadataEvent.Type.METADATA_CHANGED, getMetadata()));
                }
            } else {
                return node.id();
            }
        }
        return null;
    }).filter(Objects::nonNull).collect(Collectors.toSet());
    return SERIALIZER.encode(Sets.newHashSet(Sets.union(Sets.difference(advertisement.digests(), nodes.keySet()), staleNodes)));
}

Example 3 with ClusterMetadataEvent

use of io.atomix.cluster.ClusterMetadataEvent in project atomix by atomix.

the class DefaultClusterService method handleMetadataEvent.

/**
 * Handles a cluster metadata change event.
 */
private void handleMetadataEvent(ClusterMetadataEvent event) {
    // Iterate through all bootstrap nodes and add any missing data nodes, triggering NODE_ADDED events.
    // Collect the bootstrap node IDs into a set.
    Set<NodeId> bootstrapNodes = event.subject().bootstrapNodes().stream().map(node -> {
        StatefulNode existingNode = nodes.get(node.id());
        if (existingNode == null) {
            StatefulNode newNode = new StatefulNode(node.id(), node.type(), node.endpoint(), node.zone(), node.rack(), node.host());
            nodes.put(newNode.id(), newNode);
            post(new ClusterEvent(ClusterEvent.Type.NODE_ADDED, newNode));
        }
        return node.id();
    }).collect(Collectors.toSet());
    // Filter the set of data node IDs from the local node information.
    Set<NodeId> dataNodes = nodes.entrySet().stream().filter(entry -> entry.getValue().type() == Node.Type.CORE).map(entry -> entry.getKey()).collect(Collectors.toSet());
    // Compute the set of local data nodes missing in the set of bootstrap nodes.
    Set<NodeId> missingNodes = Sets.difference(dataNodes, bootstrapNodes);
    // For each missing data node, remove the node and trigger a NODE_REMOVED event.
    for (NodeId nodeId : missingNodes) {
        StatefulNode existingNode = nodes.remove(nodeId);
        if (existingNode != null) {
            post(new ClusterEvent(ClusterEvent.Type.NODE_REMOVED, existingNode));
        }
    }
}

Example 4 with ClusterMetadataEvent

use of io.atomix.cluster.ClusterMetadataEvent in project atomix by atomix.

the class DefaultClusterMetadataService method addNode.

@Override
public void addNode(Node node) {
    if (node.type() != Node.Type.CLIENT) {
        ReplicatedNode replicatedNode = nodes.get(node.id());
        if (replicatedNode == null) {
            LogicalTimestamp timestamp = clock.increment();
            replicatedNode = new ReplicatedNode(node.id(), node.type(), node.endpoint(), node.zone(), node.rack(), node.host(), timestamp, false);
            nodes.put(replicatedNode.id(), replicatedNode);
            broadcastUpdate(new NodeUpdate(replicatedNode, timestamp));
            post(new ClusterMetadataEvent(ClusterMetadataEvent.Type.METADATA_CHANGED, getMetadata()));
        }
    }
}

Example 5 with ClusterMetadataEvent

use of io.atomix.cluster.ClusterMetadataEvent in project atomix by atomix.

the class DefaultClusterMetadataService method removeNode.

@Override
public void removeNode(Node node) {
    ReplicatedNode replicatedNode = nodes.get(node.id());
    if (replicatedNode != null) {
        LogicalTimestamp timestamp = clock.increment();
        replicatedNode = new ReplicatedNode(node.id(), node.type(), node.endpoint(), node.zone(), node.rack(), node.host(), timestamp, true);
        nodes.put(replicatedNode.id(), replicatedNode);
        broadcastUpdate(new NodeUpdate(replicatedNode, timestamp));
        post(new ClusterMetadataEvent(ClusterMetadataEvent.Type.METADATA_CHANGED, getMetadata()));
    }
}