/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ignite.internal.managers.discovery;
import java.util.Collection;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.internal.util.tostring.GridToStringInclude;
import org.apache.ignite.internal.util.typedef.internal.S;
/**
* Topology snapshot managed by discovery manager.
*/
public class GridDiscoveryTopologySnapshot {
/** Topology version. */
private long topVer;
/** Topology nodes. */
@GridToStringInclude
private Collection<ClusterNode> topNodes;
/**
* Creates a topology snapshot with given topology version and topology nodes.
*
* @param topVer Topology version.
* @param topNodes Topology nodes.
*/
public GridDiscoveryTopologySnapshot(long topVer, Collection<ClusterNode> topNodes) {
this.topVer = topVer;
this.topNodes = topNodes;
}
/**
* Gets topology version if this event is raised on
* topology change and configured discovery SPI implementation
* supports topology versioning.
*
* @return Topology version or {@code 0} if configured discovery SPI implementation
* does not support versioning.
*/
public long topologyVersion() {
return topVer;
}
/**
* Gets topology nodes from topology snapshot. If SPI implementation does not support
* versioning, the best effort snapshot will be captured.
*
* @return Topology snapshot.
*/
public Collection<ClusterNode> topologyNodes() {
return topNodes;
}
/** {@inheritDoc} */
@Override public String toString() {
return S.toString(GridDiscoveryTopologySnapshot.class, this);
}
}