| /** |
| * 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.activemq.management; |
| |
| import javax.management.j2ee.statistics.Statistic; |
| |
| /** |
| * Base class for a Statistic implementation |
| * |
| * |
| */ |
| public class StatisticImpl implements Statistic, Resettable { |
| |
| protected boolean enabled; |
| |
| private String name; |
| private String unit; |
| private String description; |
| private long startTime; |
| private long lastSampleTime; |
| private boolean doReset = true; |
| |
| public StatisticImpl(String name, String unit, String description) { |
| this.name = name; |
| this.unit = unit; |
| this.description = description; |
| this.startTime = System.currentTimeMillis(); |
| this.lastSampleTime = this.startTime; |
| } |
| |
| public synchronized void reset() { |
| if(isDoReset()) { |
| this.startTime = System.currentTimeMillis(); |
| this.lastSampleTime = this.startTime; |
| } |
| } |
| |
| protected synchronized void updateSampleTime() { |
| this.lastSampleTime = System.currentTimeMillis(); |
| } |
| |
| public synchronized String toString() { |
| StringBuffer buffer = new StringBuffer(); |
| buffer.append(name); |
| buffer.append("{"); |
| appendFieldDescription(buffer); |
| buffer.append(" }"); |
| return buffer.toString(); |
| } |
| |
| public String getName() { |
| return this.name; |
| } |
| |
| public String getUnit() { |
| return this.unit; |
| } |
| |
| public String getDescription() { |
| return this.description; |
| } |
| |
| public synchronized long getStartTime() { |
| return this.startTime; |
| } |
| |
| public synchronized long getLastSampleTime() { |
| return this.lastSampleTime; |
| } |
| |
| /** |
| * @return the enabled |
| */ |
| public boolean isEnabled() { |
| return this.enabled; |
| } |
| |
| /** |
| * @param enabled the enabled to set |
| */ |
| public void setEnabled(boolean enabled) { |
| this.enabled = enabled; |
| } |
| |
| /** |
| * @return the doReset |
| */ |
| public boolean isDoReset() { |
| return this.doReset; |
| } |
| |
| /** |
| * @param doReset the doReset to set |
| */ |
| public void setDoReset(boolean doReset) { |
| this.doReset = doReset; |
| } |
| |
| |
| protected synchronized void appendFieldDescription(StringBuffer buffer) { |
| buffer.append(" unit: "); |
| buffer.append(this.unit); |
| buffer.append(" startTime: "); |
| // buffer.append(new Date(startTime)); |
| buffer.append(this.startTime); |
| buffer.append(" lastSampleTime: "); |
| // buffer.append(new Date(lastSampleTime)); |
| buffer.append(this.lastSampleTime); |
| buffer.append(" description: "); |
| buffer.append(this.description); |
| } |
| } |