5903271c4d
During upgrade or version inconsistency. The API can return an un supported state. Instead of throwing an expcetion the state will be ignore and a warning will be written to the log. An example (state where modified in the API) $ nodetool gossipinfo /127.0.0.1 generation:1460450456 heartbeat:32 The log shows: Apr 12, 2016 3:40:20 PM org.apache.cassandra.gms.EndpointState addApplicationState WARNING: Unknown application state with id:25 Fixes scylladb/scylla#1164. Signed-off-by: Amnon Heiman <amnon@scylladb.com> Message-Id: <1460465073-3567-1-git-send-email-amnon@scylladb.com>
109 lines
3.2 KiB
Java
109 lines
3.2 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright (C) 2015 ScyllaDB
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*/
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/*
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* Moddified by ScyllaDB
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*/
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package org.apache.cassandra.gms;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* This abstraction represents both the HeartBeatState and the ApplicationState
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* in an EndpointState instance. Any state for a given endpoint can be retrieved
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* from this instance.
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*/
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public class EndpointState {
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private volatile HeartBeatState hbState;
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final Map<ApplicationState, String> applicationState = new HashMap<ApplicationState, String>();
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private volatile long updateTimestamp;
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private volatile boolean isAlive;
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ApplicationState[] applicationValues;
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private static final java.util.logging.Logger logger = java.util.logging.Logger
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.getLogger(EndpointState.class.getName());
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EndpointState(HeartBeatState initialHbState) {
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applicationValues = ApplicationState.values();
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hbState = initialHbState;
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updateTimestamp = System.nanoTime();
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isAlive = true;
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}
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HeartBeatState getHeartBeatState() {
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return hbState;
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}
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void setHeartBeatState(HeartBeatState newHbState) {
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hbState = newHbState;
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}
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public String getApplicationState(ApplicationState key) {
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return applicationState.get(key);
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}
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/**
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* TODO replace this with operations that don't expose private state
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*/
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@Deprecated
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public Map<ApplicationState, String> getApplicationStateMap() {
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return applicationState;
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}
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void addApplicationState(ApplicationState key, String value) {
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applicationState.put(key, value);
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}
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void addApplicationState(int key, String value) {
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if (key >= applicationValues.length) {
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logger.warning("Unknown application state with id:" + key);
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return;
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}
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addApplicationState(applicationValues[key], value);
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}
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/* getters and setters */
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/**
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* @return System.nanoTime() when state was updated last time.
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*/
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public long getUpdateTimestamp() {
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return updateTimestamp;
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}
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public void setUpdateTimestamp(long ts) {
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updateTimestamp = ts;
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}
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public boolean isAlive() {
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return isAlive;
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}
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public void setAliave(boolean alive) {
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isAlive = alive;
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}
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public String toString() {
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return "EndpointState: HeartBeatState = " + hbState + ", AppStateMap = "
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+ applicationState;
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}
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}
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