/*
* 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.nifi.cluster.coordination.node;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.apache.nifi.cluster.protocol.NodeIdentifier;
public final class NodeStateManager {
private final ConcurrentMap<NodeIdentifier, NodeConnectionStatus> nodeStatuses = new ConcurrentHashMap<>();
public NodeConnectionStatus getConnectionStatus(final NodeIdentifier nodeId) {
return nodeStatuses.get(nodeId);
}
public void setConnectionStatus(final NodeIdentifier nodeId, final NodeConnectionStatus status) {
nodeStatuses.put(nodeId, status);
// TODO: Notify other nodes
}
public boolean transitionConnectionStatus(final NodeIdentifier nodeId, final NodeConnectionStatus currentStatus, final NodeConnectionStatus newStatus) {
return nodeStatuses.replace(nodeId, currentStatus, newStatus);
// TODO: Notify other nodes
}
}