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SnappyData store based off Pivotal GemFireXD
/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed 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. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.admin.internal;
import com.gemstone.gemfire.admin.AdminException;
import com.gemstone.gemfire.admin.SystemMember;
import com.gemstone.gemfire.admin.Statistic;
import com.gemstone.gemfire.internal.Assert;
import com.gemstone.gemfire.internal.admin.Stat;
import com.gemstone.gemfire.internal.admin.StatResource;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
//import com.gemstone.gemfire.internal.admin.SystemMember;
import java.util.ArrayList;
//import java.util.Date;
import java.util.List;
/**
* Provides monitoring of a statistic resource.
*
* @author Kirk Lund
* @since 3.5
*/
public class StatisticResourceImpl
implements com.gemstone.gemfire.admin.StatisticResource {
/** The underlying remote StatResource which this object delegates to */
protected StatResource statResource;
/** Displayable name of this statistic resource */
protected String name;
/** Description of this statistic resource */
protected String description;
/** Classification type of this statistic resource */
protected String type;
/** GemFire system member which owns this statistic resource */
protected SystemMember member;
/** The array of statistics in this resource */
protected Statistic[] statistics; // = new Statistic[0];
// -------------------------------------------------------------------------
// Constructor(s)
// -------------------------------------------------------------------------
/**
* Constructs an instance of StatisticResourceImpl.
*
* @param statResource the admin StatResource to manage/monitor
* @param member the SystemMember owning this resource
* @exception com.gemstone.gemfire.admin.AdminException
* if unable to create this StatisticResource for administration
*/
public StatisticResourceImpl(StatResource statResource,
SystemMember member)
throws com.gemstone.gemfire.admin.AdminException {
this.statResource = statResource;
this.member = member;
this.name = this.statResource.getName();
this.description = this.statResource.getDescription();
this.type = this.statResource.getType();
}
// -------------------------------------------------------------------------
// Attributes accessors and mutators
// -------------------------------------------------------------------------
public String getName() {
return this.name;
}
public String getDescription() {
return this.description;
}
public String getType() {
return this.type;
}
public String getOwner() {
return this.member.toString();
}
public Statistic[] getStatistics() {
if (this.statistics == null) {
try {
refresh();
}
catch (AdminException e) {
this.statistics = new Statistic[0];
}
}
return this.statistics;
}
public long getUniqueId() {
return this.statResource.getResourceUniqueID();
}
// -------------------------------------------------------------------------
// Operations
// -------------------------------------------------------------------------
public void refresh() throws com.gemstone.gemfire.admin.AdminException {
Stat[] stats = null;
if (this.statResource != null) {
stats = this.statResource.getStats();
}
if (stats == null || stats.length < 1) {
throw new AdminException(LocalizedStrings.StatisticResourceImpl_FAILED_TO_REFRESH_STATISTICS_0_FOR_1.toLocalizedString(getType()+"-"+getName(), getOwner()));
}
if (this.statistics == null || this.statistics.length < 1) {
// define new statistics instances...
List statList = new ArrayList();
for (int i = 0; i < stats.length; i++) {
statList.add(createStatistic(stats[i]));
}
this.statistics = (Statistic[]) statList.toArray(new Statistic[0]);
}
else {
// update the existing instances...
for (int i = 0; i < stats.length; i++) {
updateStatistic(stats[i]);
}
}
}
// -------------------------------------------------------------------------
// Non-public implementation methods
// -------------------------------------------------------------------------
/**
* Updates the value of the {@link Statistic} corresponding to the internal
* {@link com.gemstone.gemfire.internal.admin.Stat}
*
* @param stat the internal stat to use in updating the matching statistic
*/
private void updateStatistic(Stat stat) {
for (int i = 0; i < this.statistics.length; i++) {
if (this.statistics[i].getName().equals(stat.getName())) {
((StatisticImpl)this.statistics[i]).setStat(stat);
return;
}
}
Assert.assertTrue(false, "Unknown stat: " + stat.getName());
}
/**
* Creates a new {@link StatisticImpl} to represent the internal {@link
* com.gemstone.gemfire.internal.admin.Stat}
*
* @param stat the internal stat to wrap in a new statistic
*/
protected Statistic createStatistic(Stat stat) {
return new StatisticImpl(stat);
}
/**
* Returns a string representation of the object.
*
* @return a string representation of the object
*/
@Override
public String toString() {
return getName();
}
}