Package org.apache.ignite.client

Interface ClientClusterGroup

  • All Known Subinterfaces:
    ClientCluster
    public interface ClientClusterGroup
    Thin client cluster group facade. Defines a cluster group which contains all or a subset of cluster nodes.

    • Method Detail

      • forNodes

        ClientClusterGroup forNodes​(Collection<? extends ClusterNode> nodes)
        Creates a cluster group over a given set of nodes.
        Parameters:
        nodes - Collection of nodes to create the cluster group from.
        Returns:
        Cluster group for the provided grid nodes.

      • forNode

        ClientClusterGroup forNode​(ClusterNode node,
                           ClusterNode... nodes)
        Creates a cluster group for the given node.
        Parameters:
        node - Node to create cluster group for.
        nodes - Optional additional nodes to include into the cluster group.
        Returns:
        Cluster group for the given nodes.

      • forOthers

        ClientClusterGroup forOthers​(ClusterNode node,
                             ClusterNode... nodes)
        Creates a cluster group for nodes other than the given nodes.
        Parameters:
        node - Node to exclude from the new cluster group.
        nodes - Optional additional nodes to exclude from the cluster group.
        Returns:
        Cluster group that will contain all nodes from the original cluster group excluding the given nodes.

      • forOthers

        ClientClusterGroup forOthers​(ClientClusterGroup prj)
        Creates a cluster group for nodes not included into the given cluster group.
        Parameters:
        prj - Cluster group to exclude from the new cluster group.
        Returns:
        Cluster group for nodes not included into the given cluster group.

      • forNodeIds

        ClientClusterGroup forNodeIds​(Collection<UUID> ids)
        Creates a cluster group over nodes with specified node IDs.
        Parameters:
        ids - Collection of node IDs.
        Returns:
        Cluster group over nodes with the specified node IDs.

      • forNodeId

        ClientClusterGroup forNodeId​(UUID id,
                             UUID... ids)
        Creates a cluster group for a node with the specified ID.
        Parameters:
        id - Node ID to get the cluster group for.
        ids - Optional additional node IDs to include into the cluster group.
        Returns:
        Cluster group over the node with the specified node IDs.

      • forPredicate

        ClientClusterGroup forPredicate​(Predicate<ClusterNode> p)
        Creates a new cluster group which includes all nodes that pass the given predicate filter.
        Parameters:
        p - Predicate filter for nodes to include into the cluster group.
        Returns:
        Cluster group for nodes that passed the predicate filter.

      • forAttribute

        ClientClusterGroup forAttribute​(String name,
                                @Nullable
                                @Nullable Object val)
        Creates a new cluster group for nodes containing given name and value specified in user attributes.

        User attributes for every node are optional and can be specified in grid node configuration. See IgniteConfiguration.getUserAttributes() for more information.

        Parameters:
        name - Name of the attribute.
        val - Optional attribute value to match (if null, just check if attribute exists).
        Returns:
        Cluster group for nodes containing specified attribute.

      • forRandom

        ClientClusterGroup forRandom()
        Creates a cluster group with one random node from the current cluster group.
        Returns:
        Cluster group containing one random node from the current cluster group.

      • forOldest

        ClientClusterGroup forOldest()
        Creates a cluster group with one oldest node from the current cluster group. The resulting cluster group is dynamic and will always pick the next oldest node if the previous one leaves topology even after the cluster group has been created.

        Use node() method to get the oldest node.

        Returns:
        Cluster group containing one oldest node from the current cluster group.

      • forYoungest

        ClientClusterGroup forYoungest()
        Creates a cluster group with one youngest node in the current cluster group. The resulting cluster group is dynamic and will always pick the newest node in the topology, even if more nodes entered after the cluster group has been created.
        Returns:
        Cluster group containing one youngest node from the current cluster group.

      • forHost

        ClientClusterGroup forHost​(ClusterNode node)
        Gets cluster group consisting from the nodes in this cluster group residing on the same host (with the same MAC address) as the given node.
        Parameters:
        node - Node to select the host for.
        Returns:
        Cluster group for nodes residing on the same host as the specified node.

      • forHost

        ClientClusterGroup forHost​(String host,
                           String... hosts)
        Gets cluster group consisting from the nodes running on the hosts specified.
        Parameters:
        host - Host name to get nodes to put in cluster
        hosts - Host names to get nodes to put in cluster.
        Returns:
        Cluster group for nodes residing on the hosts specified.

      • nodes

        Collection<ClusterNode> nodes()
        Gets the read-only collection of nodes in this cluster group.
        Returns:
        All nodes in this cluster group.

      • node

        ClusterNode node​(UUID nid)
        Gets a node for given ID from this cluster group.
        Parameters:
        nid - Node ID.
        Returns:
        Node with given ID from this cluster group or null, if such node does not exist.

      • node

        ClusterNode node()
        Gets first node from the list of nodes in this cluster group. This method is specifically useful for cluster groups with one node only.
        Returns:
        First node from the list of nodes in this cluster group or null if the cluster group is empty.