/*
* 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.Objects;
import java.util.concurrent.atomic.AtomicLong;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import org.apache.nifi.cluster.protocol.NodeIdentifier;
import org.apache.nifi.cluster.protocol.jaxb.message.NodeConnectionStatusAdapter;
/**
* Describes the current status of a node
*/
@XmlJavaTypeAdapter(NodeConnectionStatusAdapter.class)
public class NodeConnectionStatus {
private static final AtomicLong idGenerator = new AtomicLong(0L);
private final long updateId;
private final NodeIdentifier nodeId;
private final NodeConnectionState state;
private final DisconnectionCode disconnectCode;
private final String disconnectReason;
private final Long connectionRequestTime;
public NodeConnectionStatus(final NodeIdentifier nodeId, final NodeConnectionState state) {
this(nodeId, state, null, null, null);
}
public NodeConnectionStatus(final NodeIdentifier nodeId, final DisconnectionCode disconnectionCode) {
this(nodeId, NodeConnectionState.DISCONNECTED, disconnectionCode, disconnectionCode.toString(), null);
}
public NodeConnectionStatus(final NodeIdentifier nodeId, final DisconnectionCode disconnectionCode, final String disconnectionExplanation) {
this(nodeId, NodeConnectionState.DISCONNECTED, disconnectionCode, disconnectionExplanation, null);
}
public NodeConnectionStatus(final NodeIdentifier nodeId, final NodeConnectionState state, final DisconnectionCode disconnectionCode) {
this(nodeId, state, disconnectionCode, disconnectionCode == null ? null : disconnectionCode.toString(), null);
}
public NodeConnectionStatus(final NodeConnectionStatus status) {
this(status.getNodeIdentifier(), status.getState(), status.getDisconnectCode(), status.getDisconnectReason(), status.getConnectionRequestTime());
}
public NodeConnectionStatus(final NodeIdentifier nodeId, final NodeConnectionState state, final DisconnectionCode disconnectCode,
final String disconnectReason, final Long connectionRequestTime) {
this(idGenerator.getAndIncrement(), nodeId, state, disconnectCode, disconnectReason, connectionRequestTime);
}
public NodeConnectionStatus(final long updateId, final NodeIdentifier nodeId, final NodeConnectionState state, final DisconnectionCode disconnectCode,
final String disconnectReason, final Long connectionRequestTime) {
this.updateId = updateId;
this.nodeId = nodeId;
this.state = state;
if (state == NodeConnectionState.DISCONNECTED && disconnectCode == null) {
this.disconnectCode = DisconnectionCode.UNKNOWN;
this.disconnectReason = this.disconnectCode.toString();
} else {
this.disconnectCode = disconnectCode;
this.disconnectReason = disconnectReason;
}
this.connectionRequestTime = (connectionRequestTime == null && state == NodeConnectionState.CONNECTING) ? Long.valueOf(System.currentTimeMillis()) : connectionRequestTime;
}
public long getUpdateIdentifier() {
return updateId;
}
public NodeIdentifier getNodeIdentifier() {
return nodeId;
}
public NodeConnectionState getState() {
return state;
}
public DisconnectionCode getDisconnectCode() {
return disconnectCode;
}
public String getDisconnectReason() {
return disconnectReason;
}
public Long getConnectionRequestTime() {
return connectionRequestTime;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
final NodeConnectionState state = getState();
sb.append("NodeConnectionStatus[nodeId=").append(nodeId).append(", state=").append(state);
if (state == NodeConnectionState.DISCONNECTED || state == NodeConnectionState.DISCONNECTING) {
sb.append(", Disconnect Code=").append(getDisconnectCode()).append(", Disconnect Reason=").append(getDisconnectReason());
}
sb.append(", updateId=").append(getUpdateIdentifier());
sb.append("]");
return sb.toString();
}
/**
* Updates the ID Generator so that it is at least equal to the given minimum value
*
* @param minimumValue the minimum value that the ID Generator should be set to
*/
static void updateIdGenerator(long minimumValue) {
idGenerator.updateAndGet(curValue -> Math.max(minimumValue, curValue));
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((nodeId == null) ? 0 : nodeId.hashCode());
result = prime * result + ((state == null) ? 0 : state.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof NodeConnectionStatus)) {
return false;
}
NodeConnectionStatus other = (NodeConnectionStatus) obj;
return Objects.deepEquals(getNodeIdentifier(), other.getNodeIdentifier())
&& Objects.deepEquals(getState(), other.getState());
}
}