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/*
* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package javax.management.relation;
import javax.management.Notification;
import javax.management.ObjectName;
import java.io.InvalidObjectException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamField;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.sun.jmx.mbeanserver.GetPropertyAction;
import static com.sun.jmx.mbeanserver.Util.cast;
/**
* A notification of a change in the Relation Service.
* A RelationNotification notification is sent when a relation is created via
* the Relation Service, or an MBean is added as a relation in the Relation
* Service, or a role is updated in a relation, or a relation is removed from
* the Relation Service.
*
* <p>The <b>serialVersionUID</b> of this class is <code>-6871117877523310399L</code>.
*
* @since 1.5
*/
@SuppressWarnings("serial") // serialVersionUID not constant
public class RelationNotification extends Notification {
// 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 = -2126464566505527147L;
//
// Serial version for new serial form
private static final long newSerialVersionUID = -6871117877523310399L;
//
// Serializable fields in old serial form
private static final ObjectStreamField[] oldSerialPersistentFields =
{
new ObjectStreamField("myNewRoleValue", ArrayList.class),
new ObjectStreamField("myOldRoleValue", ArrayList.class),
new ObjectStreamField("myRelId", String.class),
new ObjectStreamField("myRelObjName", ObjectName.class),
new ObjectStreamField("myRelTypeName", String.class),
new ObjectStreamField("myRoleName", String.class),
new ObjectStreamField("myUnregMBeanList", ArrayList.class)
};
//
// Serializable fields in new serial form
private static final ObjectStreamField[] newSerialPersistentFields =
{
new ObjectStreamField("newRoleValue", List.class),
new ObjectStreamField("oldRoleValue", List.class),
new ObjectStreamField("relationId", String.class),
new ObjectStreamField("relationObjName", ObjectName.class),
new ObjectStreamField("relationTypeName", String.class),
new ObjectStreamField("roleName", String.class),
new ObjectStreamField("unregisterMBeanList", List.class)
};
//
// Actual serial version and serial form
private static final long serialVersionUID;
/**
* @serialField relationId String Relation identifier of
* created/removed/updated relation
* @serialField relationTypeName String Relation type name of
* created/removed/updated relation
* @serialField relationObjName ObjectName {@link ObjectName} of
* the relation MBean of created/removed/updated relation (only if
* the relation is represented by an MBean)
* @serialField unregisterMBeanList List List of {@link
* ObjectName}s of referenced MBeans to be unregistered due to
* relation removal
* @serialField roleName String Name of updated role (only for role update)
* @serialField oldRoleValue List Old role value ({@link
* ArrayList} of {@link ObjectName}s) (only for role update)
* @serialField newRoleValue List New role value ({@link
* ArrayList} of {@link ObjectName}s) (only for role update)
*/
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 : Too bad, no compat with 1.0
}
if (compat) {
serialPersistentFields = oldSerialPersistentFields;
serialVersionUID = oldSerialVersionUID;
} else {
serialPersistentFields = newSerialPersistentFields;
serialVersionUID = newSerialVersionUID;
}
}
//
// END Serialization compatibility stuff
//
// Notification types
//
/**
* Type for the creation of an internal relation.
*/
public static final String RELATION_BASIC_CREATION = "jmx.relation.creation.basic";
/**
* Type for the relation MBean added into the Relation Service.
*/
public static final String RELATION_MBEAN_CREATION = "jmx.relation.creation.mbean";
/**
* Type for an update of an internal relation.
*/
public static final String RELATION_BASIC_UPDATE = "jmx.relation.update.basic";
/**
* Type for the update of a relation MBean.
*/
public static final String RELATION_MBEAN_UPDATE = "jmx.relation.update.mbean";
/**
* Type for the removal from the Relation Service of an internal relation.
*/
public static final String RELATION_BASIC_REMOVAL = "jmx.relation.removal.basic";
/**
* Type for the removal from the Relation Service of a relation MBean.
*/
public static final String RELATION_MBEAN_REMOVAL = "jmx.relation.removal.mbean";
//
// Private members
//
/**
* @serial Relation identifier of created/removed/updated relation
*/
private String relationId = null;
/**
* @serial Relation type name of created/removed/updated relation
*/
private String relationTypeName = null;
/**
* @serial {@link ObjectName} of the relation MBean of created/removed/updated relation
* (only if the relation is represented by an MBean)
*/
private ObjectName relationObjName = null;
/**
* @serial List of {@link ObjectName}s of referenced MBeans to be unregistered due to
* relation removal
*/
private List<ObjectName> unregisterMBeanList = null;
/**
* @serial Name of updated role (only for role update)
*/
private String roleName = null;
/**
* @serial Old role value ({@link ArrayList} of {@link ObjectName}s) (only for role update)
*/
private List<ObjectName> oldRoleValue = null;
/**
* @serial New role value ({@link ArrayList} of {@link ObjectName}s) (only for role update)
*/
private List<ObjectName> newRoleValue = null;
//
// Constructors
//
/**
* Creates a notification for either a relation creation (RelationSupport
* object created internally in the Relation Service, or an MBean added as a
* relation) or for a relation removal from the Relation Service.
*
* @param notifType type of the notification; either:
* <P>- RELATION_BASIC_CREATION
* <P>- RELATION_MBEAN_CREATION
* <P>- RELATION_BASIC_REMOVAL
* <P>- RELATION_MBEAN_REMOVAL
* @param sourceObj source object, sending the notification. This is either
* an ObjectName or a RelationService object. In the latter case it must be
* the MBean emitting the notification; the MBean Server will rewrite the
* source to be the ObjectName under which that MBean is registered.
* @param sequence sequence number to identify the notification
* @param timeStamp time stamp
* @param message human-readable message describing the notification
* @param id relation id identifying the relation in the Relation
* Service
* @param typeName name of the relation type
* @param objectName ObjectName of the relation object if it is an MBean
* (null for relations internally handled by the Relation Service)
* @param unregMBeanList list of ObjectNames of referenced MBeans
* expected to be unregistered due to relation removal (only for removal,
* due to CIM qualifiers, can be null)
*
* @exception IllegalArgumentException if:
* <P>- no value for the notification type
* <P>- the notification type is not RELATION_BASIC_CREATION,
* RELATION_MBEAN_CREATION, RELATION_BASIC_REMOVAL or
* RELATION_MBEAN_REMOVAL
* <P>- no source object
* <P>- the source object is not a Relation Service
* <P>- no relation id
* <P>- no relation type name
*/
public RelationNotification(String notifType,
Object sourceObj,
long sequence,
long timeStamp,
String message,
String id,
String typeName,
ObjectName objectName,
List<ObjectName> unregMBeanList)
throws IllegalArgumentException {
super(notifType, sourceObj, sequence, timeStamp, message);
if (!isValidBasicStrict(notifType,sourceObj,id,typeName) || !isValidCreate(notifType)) {
throw new IllegalArgumentException("Invalid parameter.");
}
relationId = id;
relationTypeName = typeName;
relationObjName = safeGetObjectName(objectName);
unregisterMBeanList = safeGetObjectNameList(unregMBeanList);
}
/**
* Creates a notification for a role update in a relation.
*
* @param notifType type of the notification; either:
* <P>- RELATION_BASIC_UPDATE
* <P>- RELATION_MBEAN_UPDATE
* @param sourceObj source object, sending the notification. This is either
* an ObjectName or a RelationService object. In the latter case it must be
* the MBean emitting the notification; the MBean Server will rewrite the
* source to be the ObjectName under which that MBean is registered.
* @param sequence sequence number to identify the notification
* @param timeStamp time stamp
* @param message human-readable message describing the notification
* @param id relation id identifying the relation in the Relation
* Service
* @param typeName name of the relation type
* @param objectName ObjectName of the relation object if it is an MBean
* (null for relations internally handled by the Relation Service)
* @param name name of the updated role
* @param newValue new role value (List of ObjectName objects)
* @param oldValue old role value (List of ObjectName objects)
*
* @exception IllegalArgumentException if null parameter
*/
public RelationNotification(String notifType,
Object sourceObj,
long sequence,
long timeStamp,
String message,
String id,
String typeName,
ObjectName objectName,
String name,
List<ObjectName> newValue,
List<ObjectName> oldValue
)
throws IllegalArgumentException {
super(notifType, sourceObj, sequence, timeStamp, message);
if (!isValidBasicStrict(notifType,sourceObj,id,typeName) || !isValidUpdate(notifType,name,newValue,oldValue)) {
throw new IllegalArgumentException("Invalid parameter.");
}
relationId = id;
relationTypeName = typeName;
relationObjName = safeGetObjectName(objectName);
roleName = name;
oldRoleValue = safeGetObjectNameList(oldValue);
newRoleValue = safeGetObjectNameList(newValue);
}
//
// Accessors
//
/**
* Returns the relation identifier of created/removed/updated relation.
*
* @return the relation id.
*/
public String getRelationId() {
return relationId;
}
/**
* Returns the relation type name of created/removed/updated relation.
*
* @return the relation type name.
*/
public String getRelationTypeName() {
return relationTypeName;
}
/**
* Returns the ObjectName of the
* created/removed/updated relation.
*
* @return the ObjectName if the relation is an MBean, otherwise null.
*/
public ObjectName getObjectName() {
return relationObjName;
}
/**
* Returns the list of ObjectNames of MBeans expected to be unregistered
* due to a relation removal (only for relation removal).
*
* @return a {@link List} of {@link ObjectName}.
*/
public List<ObjectName> getMBeansToUnregister() {
List<ObjectName> result;
if (unregisterMBeanList != null) {
result = new ArrayList<ObjectName>(unregisterMBeanList);
} else {
result = Collections.emptyList();
}
return result;
}
/**
* Returns name of updated role of updated relation (only for role update).
*
* @return the name of the updated role.
*/
public String getRoleName() {
String result = null;
if (roleName != null) {
result = roleName;
}
return result;
}
/**
* Returns old value of updated role (only for role update).
*
* @return the old value of the updated role.
*/
public List<ObjectName> getOldRoleValue() {
List<ObjectName> result;
if (oldRoleValue != null) {
result = new ArrayList<ObjectName>(oldRoleValue);
} else {
result = Collections.emptyList();
}
return result;
}
/**
* Returns new value of updated role (only for role update).
*
* @return the new value of the updated role.
*/
public List<ObjectName> getNewRoleValue() {
List<ObjectName> result;
if (newRoleValue != null) {
result = new ArrayList<ObjectName>(newRoleValue);
} else {
result = Collections.emptyList();
}
return result;
}
//
// Misc
//
// Initializes members
//
// -param notifKind 1 for creation/removal, 2 for update
// -param notifType type of the notification; either:
// - RELATION_BASIC_UPDATE
// - RELATION_MBEAN_UPDATE
// for an update, or:
// - RELATION_BASIC_CREATION
// - RELATION_MBEAN_CREATION
// - RELATION_BASIC_REMOVAL
// - RELATION_MBEAN_REMOVAL
// for a creation or removal
// -param sourceObj source object, sending the notification. Will always
// be a RelationService object.
// -param sequence sequence number to identify the notification
// -param timeStamp time stamp
// -param message human-readable message describing the notification
// -param id relation id identifying the relation in the Relation
// Service
// -param typeName name of the relation type
// -param objectName ObjectName of the relation object if it is an MBean
// (null for relations internally handled by the Relation Service)
// -param unregMBeanList list of ObjectNames of MBeans expected to be
// removed due to relation removal
// -param name name of the updated role
// -param newValue new value (List of ObjectName objects)
// -param oldValue old value (List of ObjectName objects)
//
// -exception IllegalArgumentException if:
// - no value for the notification type
// - incorrect notification type
// - no source object
// - the source object is not a Relation Service
// - no relation id
// - no relation type name
// - no role name (for role update)
// - no role old value (for role update)
// - no role new value (for role update)
// Despite the fact, that validation in constructor of RelationNotification prohibit
// creation of the class instance with null sourceObj its possible to set it to null later
// by public setSource() method.
// So we should relax validation rules to preserve serialization behavior compatibility.
private boolean isValidBasicStrict(String notifType, Object sourceObj, String id, String typeName){
if (sourceObj == null) {
return false;
}
return isValidBasic(notifType,sourceObj,id,typeName);
}
private boolean isValidBasic(String notifType, Object sourceObj, String id, String typeName){
if (notifType == null || id == null || typeName == null) {
return false;
}
if (sourceObj != null && (
!(sourceObj instanceof RelationService) &&
!(sourceObj instanceof ObjectName))) {
return false;
}
return true;
}
private boolean isValidCreate(String notifType) {
String[] validTypes= {RelationNotification.RELATION_BASIC_CREATION,
RelationNotification.RELATION_MBEAN_CREATION,
RelationNotification.RELATION_BASIC_REMOVAL,
RelationNotification.RELATION_MBEAN_REMOVAL};
Set<String> ctSet = new HashSet<String>(Arrays.asList(validTypes));
return ctSet.contains(notifType);
}
private boolean isValidUpdate(String notifType, String name,
List<ObjectName> newValue, List<ObjectName> oldValue) {
if (!(notifType.equals(RelationNotification.RELATION_BASIC_UPDATE)) &&
!(notifType.equals(RelationNotification.RELATION_MBEAN_UPDATE))) {
return false;
}
if (name == null || oldValue == null || newValue == null) {
return false;
}
return true;
}
private ArrayList<ObjectName> safeGetObjectNameList(List<ObjectName> src){
ArrayList<ObjectName> dest = null;
if (src != null) {
dest = new ArrayList<ObjectName>();
for (ObjectName item : src) {
// NPE thrown if we attempt to add null object
dest.add(ObjectName.getInstance(item));
}
}
return dest;
}
private ObjectName safeGetObjectName(ObjectName src){
ObjectName dest = null;
if (src != null) {
dest = ObjectName.getInstance(src);
}
return dest;
}
/**
* Deserializes a {@link RelationNotification} from an {@link ObjectInputStream}.
*/
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
String tmpRelationId, tmpRelationTypeName, tmpRoleName;
ObjectName tmpRelationObjName;
List<ObjectName> tmpNewRoleValue, tmpOldRoleValue, tmpUnregMBeanList;
ObjectInputStream.GetField fields = in.readFields();
if (compat) {
tmpRelationId = (String)fields.get("myRelId", null);
tmpRelationTypeName = (String)fields.get("myRelTypeName", null);
tmpRoleName = (String)fields.get("myRoleName", null);
tmpRelationObjName = (ObjectName)fields.get("myRelObjName", null);
tmpNewRoleValue = cast(fields.get("myNewRoleValue", null));
tmpOldRoleValue = cast(fields.get("myOldRoleValue", null));
tmpUnregMBeanList = cast(fields.get("myUnregMBeanList", null));
}
else {
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