Package org.apache.ignite.spi.discovery.isolated

Class IsolatedNode

  • All Implemented Interfaces:
    BaselineNode, ClusterNode, org.apache.ignite.internal.managers.discovery.IgniteClusterNode
    public class IsolatedNode
extends Object
implements org.apache.ignite.internal.managers.discovery.IgniteClusterNode
    Special isolated node.

    • Method Detail

      • id

        public UUID id()
        Gets globally unique node ID. A new ID is generated every time a node restarts.
        Specified by:
        id in interface ClusterNode
        Returns:
        Globally unique node ID.

      • attribute

        public <T> T attribute​(String name)
        Gets a node attribute. Attributes are assigned to nodes at startup via IgniteConfiguration.getUserAttributes() method.

        The system adds the following attributes automatically:

        • {@link System#getProperties()} - All system properties.
        • {@link System#getenv(String)} - All environment properties.
        • All attributes defined in IgniteNodeAttributes

        Note that attributes cannot be changed at runtime.

        Specified by:
        attribute in interface BaselineNode
        Specified by:
        attribute in interface ClusterNode
        Type Parameters:
        T - Attribute Type.
        Parameters:
        name - Attribute name. Note that attribute names starting with org.apache.ignite are reserved for internal use.
        Returns:
        Attribute value or null.

      • attributes

        public Map<String,​Object> attributes()
        Gets all node attributes. Attributes are assigned to nodes at startup via IgniteConfiguration.getUserAttributes() method.

        The system adds the following attributes automatically:

        • {@link System#getProperties()} - All system properties.
        • {@link System#getenv(String)} - All environment properties.
        • All attributes defined in IgniteNodeAttributes

        Note that attributes cannot be changed at runtime.

        Specified by:
        attributes in interface BaselineNode
        Specified by:
        attributes in interface ClusterNode
        Returns:
        All node attributes.

      • addresses

        public Collection<String> addresses()
        Gets collection of addresses this node is known by.

        If IgniteConfiguration.getLocalHost() value isn't null node will try to use that address for all communications and returned collection will contain only that address. If it is null then local wildcard address will be used, and Ignite will make the best effort to supply all addresses of that node in returned collection.

        Specified by:
        addresses in interface ClusterNode
        Returns:
        Collection of addresses.

      • hostNames

        public Collection<String> hostNames()
        Gets collection of host names this node is known by.

        If IgniteConfiguration.getLocalHost() value isn't null node will try to use the host name of that resolved address for all communications and returned collection will contain only that host name. If that host name can not be resolved then ip address returned by method ClusterNode.addresses() is used.

        If IgniteConfiguration.getLocalHost() value is null then local wildcard address will be used, and this method returns host names of all addresses of that node.

        Note: the loopback address will be omitted in results.

        Specified by:
        hostNames in interface ClusterNode
        Returns:
        Collection of host names.

      • order

        public long order()
        Node order within grid topology. Discovery SPIs that support node ordering will assign a proper order to each node and will guarantee that discovery event notifications for new nodes will come in proper order. All other SPIs not supporting ordering may choose to return node startup time here.

        NOTE: in cases when discovery SPI doesn't support ordering Ignite cannot guarantee that orders on all nodes will be unique or chronologically correct. If such guarantee is required - make sure use discovery SPI that provides ordering.

        Specified by:
        order in interface ClusterNode
        Returns:
        Node startup order.

      • isLocal

        public boolean isLocal()
        Tests whether or not this node is a local node.
        Specified by:
        isLocal in interface ClusterNode
        Returns:
        True if this node is a local node, false otherwise.

      • setConsistentId

        public void setConsistentId​(Serializable consistentId)
        Sets consistent globally unique node ID which survives node restarts.
        Specified by:
        setConsistentId in interface org.apache.ignite.internal.managers.discovery.IgniteClusterNode
        Parameters:
        consistentId - Consistent globally unique node ID.

      • setMetrics

        public void setMetrics​(ClusterMetrics metrics)
        Sets node metrics.
        Specified by:
        setMetrics in interface org.apache.ignite.internal.managers.discovery.IgniteClusterNode
        Parameters:
        metrics - Node metrics.

      • cacheMetrics

        public Map<Integer,​CacheMetrics> cacheMetrics()
        Gets collections of cache metrics for this node. Note that node cache metrics are constantly updated and provide up to date information about caches.

        Cache metrics are updated with some delay which is directly related to metrics update frequency. For example, by default the update will happen every 2 seconds.

        Specified by:
        cacheMetrics in interface org.apache.ignite.internal.managers.discovery.IgniteClusterNode
        Returns:
        Runtime metrics snapshots for this node.

      • setCacheMetrics

        public void setCacheMetrics​(Map<Integer,​CacheMetrics> cacheMetrics)
        Sets node cache metrics.
        Specified by:
        setCacheMetrics in interface org.apache.ignite.internal.managers.discovery.IgniteClusterNode
        Parameters:
        cacheMetrics - Cache metrics.

      • setAttributes

        public void setAttributes​(Map<String,​Object> attrs)
        Parameters:
        attrs - Local node attributes.