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package org.glassfish.jersey.server.internal.monitoring.jmx;
import java.util.HashMap;
import java.util.Map;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.AttributeNotFoundException;
import javax.management.DynamicMBean;
import javax.management.InvalidAttributeValueException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.ReflectionException;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.server.monitoring.ExecutionStatistics;
import org.glassfish.jersey.server.monitoring.TimeWindowStatistics;
/**
* Dynamic MBean that exposes information about execution statistics. The exposed information contains
* execution statistics for various time window sizes.
*
* @author Miroslav Fuksa
*/
public class ExecutionStatisticsDynamicBean implements DynamicMBean {
private volatile ExecutionStatistics executionStatistics;
private final Map> attributeValues = new HashMap<>();
private final MBeanInfo mBeanInfo;
private MBeanInfo initMBeanInfo(final ExecutionStatistics initialStatistics) {
final Map statsMap = initialStatistics.getTimeWindowStatistics();
MBeanAttributeInfo[] attrs = new MBeanAttributeInfo[statsMap.size() * 5];
int i = 0;
for (final TimeWindowStatistics stats : statsMap.values()) {
final long interval = stats.getTimeWindow();
final String postfix = convertIntervalToString((int) interval);
String name = "MinTime[ms]_" + postfix;
attrs[i++] = new MBeanAttributeInfo(name, "long", "Minimum request processing time in milliseconds in last "
+ postfix + ".", true, false, false);
attributeValues.put(name, new Value