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/**
* PROPRIETARY/CONFIDENTIAL. Use of this product is subject to license terms.
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package com.sun.enterprise.admin.monitor;
import java.util.ArrayList;
import java.util.Iterator;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.ObjectName;
/**
* Get command for monitoring.
*/
public class MonitorGetCommand extends MonitorCommand {
/**
* Constant to denote - get specified attribute value from specified MBean
*/
private static final int GET_ATTR = 2;
/**
* Constant to denote - get all attribute values from specified MBean
*/
private static final int GET_ALL_ATTR = 4;
/**
* Constant to denote - get specified attribute value from all child MBeans
* of specified type.
*/
private static final int GET_ATTR_FOR_TYPE = 6;
/**
* Constant to denote - get all attribute values from all child MBeans of
* specified type.
*/
private static final int GET_ALL_ATTR_FOR_TYPE = 8;
/**
* Name of the attribute. This is either an attribute name or wildcard
* character (*) denoting all attributes. Partial wildcard is not supported,
* so num-invocation can be used but num* can not be.
*/
private String attrName;
/**
* Create a new get command that gets specified attribute from specified
* MBean.
* @param mbeanName object name of the MBean
* @param attrName name of the attribute. This can be wildcard character
*/
MonitorGetCommand(ObjectName mbeanName, String attrName) {
this.objectName = mbeanName;
this.attrName = attrName;
if (WILDCARD.equals(attrName)) {
actionCode = GET_ALL_ATTR;
} else {
actionCode = GET_ATTR;
}
}
/**
* Create a new get command that gets specified attribute from all child
* of specified type from the specified MBean.
* @param mbeanName object name of the MBean
* @param type the type of child MBeans to search
* @param attrName name of the attribute. This can be wildcard character
*/
MonitorGetCommand(ObjectName mbeanName, MonitoredObjectType type,
String attrName) {
this.objectName = mbeanName;
this.monitoredObjectType = type.getTypeName();
this.attrName = attrName;
if (WILDCARD.equals(attrName)) {
actionCode = GET_ALL_ATTR_FOR_TYPE;
} else {
actionCode = GET_ATTR_FOR_TYPE;
}
}
/**
* Run get command. This method returns an instance of jmx AttributeList.
* @throws InstanceNotFoundException if the MBean is not found
* @throws AttributeNotFoundException if the attribute is not found
* @return list of attributes
*/
Object runCommand() throws InstanceNotFoundException,
AttributeNotFoundException {
BaseMonitorMBean mbean = MonitoringHelper.getMonitorMBean(objectName);
MonitoredObjectType type = null;
if (monitoredObjectType != null) {
type = MonitoredObjectType.getMonitoredObjectType(monitoredObjectType);
}
ArrayList mbeanList = null;
if (actionCode == GET_ATTR_FOR_TYPE
|| actionCode == GET_ALL_ATTR_FOR_TYPE) {
mbeanList = mbean.getChildList(type);
} else {
mbeanList = new ArrayList();
mbeanList.add(mbean);
}
AttributeList result = new AttributeList();
Iterator iter = mbeanList.iterator();
while (iter.hasNext()) {
BaseMonitorMBean bmb = (BaseMonitorMBean)iter.next();
if (actionCode == GET_ATTR || actionCode == GET_ATTR_FOR_TYPE) {
Object val = bmb.getAttribute(attrName);
Attribute attr = null;
if (actionCode == GET_ATTR_FOR_TYPE) {
attr = new Attribute(getQualifiedName(bmb, type, attrName),
val);
} else {
attr = new Attribute(attrName, val);
}
result.add(attr);
} else if (actionCode == GET_ALL_ATTR
|| actionCode == GET_ALL_ATTR_FOR_TYPE) {
String[] attrNames = bmb.getAllAttributeNames();
AttributeList attrList = bmb.getAttributes(attrNames);
if (actionCode == GET_ALL_ATTR_FOR_TYPE) {
AttributeList newAttrList = new AttributeList();
int numAttr = attrList.size();
for (int i = 0; i < numAttr; i++) {
Attribute attr = (Attribute)attrList.get(i);
attr = new Attribute(
getQualifiedName(bmb, type, attr.getName()),
attr.getValue());
newAttrList.add(attr);
}
attrList = newAttrList;
}
result.addAll(attrList);
}
}
return result;
}
/**
* Get qualified name of an attribute. It is possible to get attributes
* from more than one MBean in same command invocation. In these cases,
* the attribute names are prefixed with child MBean type and optionally
* child MBean name to scope the attribute name properly.
* @param mbean the child mbean
* @param type type of the child mbean
* @param attrName name of the attribute in child mbean
*/
private String getQualifiedName(BaseMonitorMBean mbean,
MonitoredObjectType type, String attrName) {
StringBuffer fullName = new StringBuffer();
fullName.append(mbean.getNodeType());
if (!type.isSingleton()) {
fullName.append("." + mbean.getNodeName());
}
fullName.append("." + attrName);
return fullName.toString();
}
/**
* Constant to denote wildcard character (addresses all attributes)
*/
private static final String WILDCARD = "*";
}
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