/*
* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
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*
*
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*
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*/
/*
* @author IBM Corp.
*
* Copyright IBM Corp. 1999-2000. All rights reserved.
*/
package javax.management.modelmbean;
import static com.sun.jmx.defaults.
JmxProperties.
MODELMBEAN_LOGGER;
import com.sun.jmx.mbeanserver.
GetPropertyAction;
import java.io.
IOException;
import java.io.
ObjectInputStream;
import java.io.
ObjectOutputStream;
import java.io.
ObjectStreamField;
import java.security.
AccessController;
import java.util.logging.
Level;
import javax.management.
Descriptor;
import javax.management.
DescriptorAccess;
import javax.management.
MBeanNotificationInfo;
import javax.management.
RuntimeOperationsException;
/**
* <p>The ModelMBeanNotificationInfo object describes a notification emitted
* by a ModelMBean.
* It is a subclass of MBeanNotificationInfo with the addition of an
* associated Descriptor and an implementation of the Descriptor interface.</p>
*
* <P id="descriptor">
* The fields in the descriptor are defined, but not limited to, the following.
* Note that when the Type in this table is Number, a String that is the decimal
* representation of a Long can also be used.</P>
*
* <table border="1" cellpadding="5" summary="ModelMBeanNotificationInfo Fields">
* <tr><th>Name</th><th>Type</th><th>Meaning</th></tr>
* <tr><td>name</td><td>String</td>
* <td>Notification name.</td></tr>
* <tr><td>descriptorType</td><td>String</td>
* <td>Must be "notification".</td></tr>
* <tr><td>severity</td><td>Number</td>
* <td>0-6 where 0: unknown; 1: non-recoverable;
* 2: critical, failure; 3: major, severe;
* 4: minor, marginal, error; 5: warning;
* 6: normal, cleared, informative</td></tr>
* <tr><td>messageID</td><td>String</td>
* <td>Unique key for message text (to allow translation, analysis).</td></tr>
* <tr><td>messageText</td><td>String</td>
* <td>Text of notification.</td></tr>
* <tr><td>log</td><td>String</td>
* <td>T - log message, F - do not log message.</td></tr>
* <tr><td>logfile</td><td>String</td>
* <td>fully qualified file name appropriate for operating system.</td></tr>
* <tr><td>visibility</td><td>Number</td>
* <td>1-4 where 1: always visible 4: rarely visible.</td></tr>
* <tr><td>presentationString</td><td>String</td>
* <td>XML formatted string to allow presentation of data.</td></tr>
* </table>
*
* <p>The default descriptor contains the name, descriptorType,
* displayName and severity(=6) fields. The default value of the name
* and displayName fields is the name of the Notification class (as
* specified by the <code>name</code> parameter of the
* ModelMBeanNotificationInfo constructor).</p>
*
* <p>The <b>serialVersionUID</b> of this class is <code>-7445681389570207141L</code>.
*
* @since 1.5
*/
@
SuppressWarnings("serial") // serialVersionUID is not constant
public class
ModelMBeanNotificationInfo
extends
MBeanNotificationInfo
implements
DescriptorAccess {
// Serialization compatibility stuff:
// Two serial forms are supported in this class. The selected form
// depends on system property "jmx.serial.form":
// - "1.0" for JMX 1.0
// - any other value for JMX 1.1 and higher
//
// Serial version for old serial form
private static final long
oldSerialVersionUID = -5211564525059047097L;
//
// Serial version for new serial form
private static final long
newSerialVersionUID = -7445681389570207141L;
//
// Serializable fields in old serial form
private static final
ObjectStreamField[]
oldSerialPersistentFields =
{
new
ObjectStreamField("notificationDescriptor",
Descriptor.class),
new
ObjectStreamField("currClass",
String.class)
};
//
// Serializable fields in new serial form
private static final
ObjectStreamField[]
newSerialPersistentFields =
{
new
ObjectStreamField("notificationDescriptor",
Descriptor.class)
};
//
// Actual serial version and serial form
private static final long
serialVersionUID;
/**
* @serialField notificationDescriptor Descriptor The descriptor
* containing the appropriate metadata for this instance
*/
private static final
ObjectStreamField[]
serialPersistentFields;
private static boolean
compat = false;
static {
try {
GetPropertyAction act = new
GetPropertyAction("jmx.serial.form");
String form =
AccessController.
doPrivileged(
act);
compat = (
form != null &&
form.
equals("1.0"));
} catch (
Exception e) {
// OK: No compat with 1.0
}
if (
compat) {
serialPersistentFields =
oldSerialPersistentFields;
serialVersionUID =
oldSerialVersionUID;
} else {
serialPersistentFields =
newSerialPersistentFields;
serialVersionUID =
newSerialVersionUID;
}
}
//
// END Serialization compatibility stuff
/**
* @serial The descriptor containing the appropriate metadata for
* this instance
*/
private
Descriptor notificationDescriptor;
private static final
String currClass = "ModelMBeanNotificationInfo";
/**
* Constructs a ModelMBeanNotificationInfo object with a default
* descriptor.
*
* @param notifTypes The array of strings (in dot notation) containing
* the notification types that may be emitted.
* @param name The name of the Notification class.
* @param description A human readable description of the
* Notification. Optional.
**/
public
ModelMBeanNotificationInfo(
String[]
notifTypes,
String name,
String description) {
this(
notifTypes,
name,
description,null);
}
/**
* Constructs a ModelMBeanNotificationInfo object.
*
* @param notifTypes The array of strings (in dot notation)
* containing the notification types that may be emitted.
* @param name The name of the Notification class.
* @param description A human readable description of the Notification.
* Optional.
* @param descriptor An instance of Descriptor containing the
* appropriate metadata for this instance of the
* MBeanNotificationInfo. If it is null a default descriptor
* will be created. If the descriptor does not contain the
* fields "displayName" or "severity",
* the missing ones are added with their default values.
*
* @exception RuntimeOperationsException Wraps an
* {@link IllegalArgumentException}. The descriptor is invalid, or
* descriptor field "name" is not equal to parameter name, or
* descriptor field "descriptorType" is not equal to "notification".
*
**/
public
ModelMBeanNotificationInfo(
String[]
notifTypes,
String name,
String description,
Descriptor descriptor) {
super(
notifTypes,
name,
description);
if (
MODELMBEAN_LOGGER.
isLoggable(
Level.
FINER)) {
MODELMBEAN_LOGGER.
logp(
Level.
FINER,
ModelMBeanNotificationInfo.class.
getName(),
"ModelMBeanNotificationInfo", "Entry");
}
notificationDescriptor =
validDescriptor(
descriptor);
}
/**
* Constructs a new ModelMBeanNotificationInfo object from this
* ModelMBeanNotfication Object.
*
* @param inInfo the ModelMBeanNotificationInfo to be duplicated
*
**/
public
ModelMBeanNotificationInfo(
ModelMBeanNotificationInfo inInfo) {
this(
inInfo.
getNotifTypes(),
inInfo.
getName(),
inInfo.
getDescription(),
inInfo.
getDescriptor());
}
/**
* Creates and returns a new ModelMBeanNotificationInfo which is a
* duplicate of this ModelMBeanNotificationInfo.
**/
public
Object clone () {
if (
MODELMBEAN_LOGGER.
isLoggable(
Level.
FINER)) {
MODELMBEAN_LOGGER.
logp(
Level.
FINER,
ModelMBeanNotificationInfo.class.
getName(),
"clone()", "Entry");
}
return(new
ModelMBeanNotificationInfo(this));
}
/**
* Returns a copy of the associated Descriptor for the
* ModelMBeanNotificationInfo.
*
* @return Descriptor associated with the
* ModelMBeanNotificationInfo object.
*
* @see #setDescriptor
**/
public
Descriptor getDescriptor() {
if (
MODELMBEAN_LOGGER.
isLoggable(
Level.
FINER)) {
MODELMBEAN_LOGGER.
logp(
Level.
FINER,
ModelMBeanNotificationInfo.class.
getName(),
"getDescriptor()", "Entry");
}
if (
notificationDescriptor == null) {
// Dead code. Should never happen.
if (
MODELMBEAN_LOGGER.
isLoggable(
Level.
FINER)) {
MODELMBEAN_LOGGER.
logp(
Level.
FINER,
ModelMBeanNotificationInfo.class.
getName(),
"getDescriptor()", "Descriptor value is null, " +
"setting descriptor to default values");
}
notificationDescriptor =
validDescriptor(null);
}
return((
Descriptor)
notificationDescriptor.
clone());
}
/**
* Sets associated Descriptor (full replace) for the
* ModelMBeanNotificationInfo If the new Descriptor is null,
* then the associated Descriptor reverts to a default
* descriptor. The Descriptor is validated before it is
* assigned. If the new Descriptor is invalid, then a
* RuntimeOperationsException wrapping an
* IllegalArgumentException is thrown.
*
* @param inDescriptor replaces the Descriptor associated with the
* ModelMBeanNotification interface
*
* @exception RuntimeOperationsException Wraps an
* {@link IllegalArgumentException} for invalid Descriptor.
*
* @see #getDescriptor
**/
public void
setDescriptor(
Descriptor inDescriptor) {
if (
MODELMBEAN_LOGGER.
isLoggable(
Level.
FINER)) {
MODELMBEAN_LOGGER.
logp(
Level.
FINER,
ModelMBeanNotificationInfo.class.
getName(),
"setDescriptor(Descriptor)", "Entry");
}
notificationDescriptor =
validDescriptor(
inDescriptor);
}
/**
* Returns a human readable string containing
* ModelMBeanNotificationInfo.
*
* @return a string describing this object.
**/
public
String toString() {
if (
MODELMBEAN_LOGGER.
isLoggable(
Level.
FINER)) {
MODELMBEAN_LOGGER.
logp(
Level.
FINER,
ModelMBeanNotificationInfo.class.
getName(),
"toString()", "Entry");
}
final
StringBuilder retStr = new
StringBuilder();
retStr.
append("ModelMBeanNotificationInfo: ")
.
append(this.
getName());
retStr.
append(" ; Description: ")
.
append(this.
getDescription());
retStr.
append(" ; Descriptor: ")
.
append(this.
getDescriptor());
retStr.
append(" ; Types: ");
String[]
nTypes = this.
getNotifTypes();
for (int
i=0;
i <
nTypes.length;
i++) {
if (
i > 0)
retStr.
append(", ");
retStr.
append(
nTypes[
i]);
}
return
retStr.
toString();
}
/**
* Clones the passed in Descriptor, sets default values, and checks for validity.
* If the Descriptor is invalid (for instance by having the wrong "name"),
* this indicates programming error and a RuntimeOperationsException will be thrown.
*
* The following fields will be defaulted if they are not already set:
* descriptorType="notification",displayName=this.getName(),
* name=this.getName(),severity="6"
*
*
* @param in Descriptor to be checked, or null which is equivalent to an
* empty Descriptor.
* @exception RuntimeOperationsException if Descriptor is invalid
*/
private
Descriptor validDescriptor(final
Descriptor in) throws
RuntimeOperationsException {
Descriptor clone;
boolean
defaulted = (
in == null);
if (
defaulted) {
clone = new
DescriptorSupport();
MODELMBEAN_LOGGER.
finer("Null Descriptor, creating new.");
} else {
clone = (
Descriptor)
in.
clone();
}
//Setting defaults.
if (
defaulted &&
clone.
getFieldValue("name")==null) {
clone.
setField("name", this.
getName());
MODELMBEAN_LOGGER.
finer("Defaulting Descriptor name to " + this.
getName());
}
if (
defaulted &&
clone.
getFieldValue("descriptorType")==null) {
clone.
setField("descriptorType", "notification");
MODELMBEAN_LOGGER.
finer("Defaulting descriptorType to \"notification\"");
}
if (
clone.
getFieldValue("displayName") == null) {
clone.
setField("displayName",this.
getName());
MODELMBEAN_LOGGER.
finer("Defaulting Descriptor displayName to " + this.
getName());
}
if (
clone.
getFieldValue("severity") == null) {
clone.
setField("severity", "6");
MODELMBEAN_LOGGER.
finer("Defaulting Descriptor severity field to 6");
}
//Checking validity
if (!
clone.
isValid()) {
throw new
RuntimeOperationsException(new
IllegalArgumentException("Invalid Descriptor argument"),
"The isValid() method of the Descriptor object itself returned false,"+
"one or more required fields are invalid. Descriptor:" +
clone.
toString());
}
if (!
getName().
equalsIgnoreCase((
String)
clone.
getFieldValue("name"))) {
throw new
RuntimeOperationsException(new
IllegalArgumentException("Invalid Descriptor argument"),
"The Descriptor \"name\" field does not match the object described. " +
" Expected: "+ this.
getName() + " , was: " +
clone.
getFieldValue("name"));
}
if (!"notification".
equalsIgnoreCase((
String)
clone.
getFieldValue("descriptorType"))) {
throw new
RuntimeOperationsException(new
IllegalArgumentException("Invalid Descriptor argument"),
"The Descriptor \"descriptorType\" field does not match the object described. " +
" Expected: \"notification\" ," + " was: " +
clone.
getFieldValue("descriptorType"));
}
return
clone;
}
/**
* Deserializes a {@link ModelMBeanNotificationInfo} from an
* {@link ObjectInputStream}.
**/
private void
readObject(
ObjectInputStream in)
throws
IOException,
ClassNotFoundException {
// New serial form ignores extra field "currClass"
in.
defaultReadObject();
}
/**
* Serializes a {@link ModelMBeanNotificationInfo} to an
* {@link ObjectOutputStream}.
**/
private void
writeObject(
ObjectOutputStream out)
throws
IOException {
if (
compat) {
// Serializes this instance in the old serial form
//
ObjectOutputStream.
PutField fields =
out.
putFields();
fields.
put("notificationDescriptor",
notificationDescriptor);
fields.
put("currClass",
currClass);
out.
writeFields();
} else {
// Serializes this instance in the new serial form
//
out.
defaultWriteObject();
}
}
}