scylla-jmx/src/main/java/org/apache/cassandra/gms/EndpointState.java

110 lines
3.2 KiB
Java
Raw Normal View History

/*
* 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.
*/
/*
* Copyright (C) 2015 ScyllaDB
*/
/*
* Moddified by ScyllaDB
*/
package org.apache.cassandra.gms;
import java.util.HashMap;
import java.util.Map;
/**
* This abstraction represents both the HeartBeatState and the ApplicationState
* in an EndpointState instance. Any state for a given endpoint can be retrieved
* from this instance.
*/
public class EndpointState {
private volatile HeartBeatState hbState;
final Map<ApplicationState, String> applicationState = new HashMap<ApplicationState, String>();
private volatile long updateTimestamp;
private volatile boolean isAlive;
ApplicationState[] applicationValues;
private static final java.util.logging.Logger logger = java.util.logging.Logger
.getLogger(EndpointState.class.getName());
EndpointState(HeartBeatState initialHbState) {
applicationValues = ApplicationState.values();
hbState = initialHbState;
updateTimestamp = System.nanoTime();
isAlive = true;
}
HeartBeatState getHeartBeatState() {
return hbState;
}
void setHeartBeatState(HeartBeatState newHbState) {
hbState = newHbState;
}
public String getApplicationState(ApplicationState key) {
return applicationState.get(key);
}
/**
* TODO replace this with operations that don't expose private state
*/
@Deprecated
public Map<ApplicationState, String> getApplicationStateMap() {
return applicationState;
}
void addApplicationState(ApplicationState key, String value) {
applicationState.put(key, value);
}
void addApplicationState(int key, String value) {
if (key >= applicationValues.length) {
logger.warning("Unknown application state with id:" + key);
return;
}
addApplicationState(applicationValues[key], value);
}
/* getters and setters */
/**
* @return System.nanoTime() when state was updated last time.
*/
public long getUpdateTimestamp() {
return updateTimestamp;
}
public void setUpdateTimestamp(long ts) {
updateTimestamp = ts;
}
public boolean isAlive() {
return isAlive;
}
public void setAliave(boolean alive) {
isAlive = alive;
}
@Override
public String toString() {
return "EndpointState: HeartBeatState = " + hbState + ", AppStateMap = " + applicationState;
}
}