/*
* @(#)file ModelMBeanOperationInfo.java
* @(#)author IBM Corp.
* @(#)version 1.35
* @(#)lastedit 03/12/19
*/
/*
* Copyright IBM Corp. 1999-2000. All rights reserved.
*
* The program is provided "as is" without any warranty express or implied,
* including the warranty of non-infringement and the implied warranties of
* merchantibility and fitness for a particular purpose. IBM will not be
* liable for any damages suffered by you or any third party claim against
* you regarding the Program.
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
* Copyright 2004 Sun Microsystems, Inc. Tous droits reserves.
* Ce logiciel est propriete de Sun Microsystems, Inc.
* Distribue par des licences qui en restreignent l'utilisation.
*
*/
package javax.management.modelmbean;
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 javax.management.Descriptor;
import javax.management.DescriptorAccess;
import javax.management.*;
import java.lang.reflect.*;
import com.sun.jmx.mbeanserver.GetPropertyAction;
import com.sun.jmx.trace.Trace;
/**
* The ModelMBeanOperationInfo object describes a management operation of the ModelMBean.
* It is a subclass of MBeanOperationInfo with the addition of an associated Descriptor
* and an implementation of the DescriptorAccess interface.
* <P>
* <PRE>
* The fields in the descriptor are defined, but not limited to, the following:
* name : operation name
* descriptorType : must be "operation"
* class : class where method is defined (fully qualified)
* role : must be "operation", "getter", or "setter
* targetObject : object on which to execute this method
* targetType : type of object reference for targetObject. Can be: ObjectReference | Handle | EJBHandle | IOR | RMIReference.
* value : cached value for operation
* currencyTimeLimit : how long cached value is valid
* lastUpdatedTimeStamp : when cached value was set
* visibility : 1-4 where 1: always visible 4: rarely visible
* presentationString : xml formatted string to describe how to present operation
* </PRE>
* The default descriptor will have name, descriptorType, displayName and role fields set.
*
* <p><b>Note:</b> because of inconsistencies in previous versions of
* this specification, it is recommended not to use negative or zero
* values for <code>currencyTimeLimit</code>. To indicate that a
* cached value is never valid, omit the
* <code>currencyTimeLimit</code> field. To indicate that it is
* always valid, use a very large number for this field.</p>
*
* @since 1.5
*/
public class ModelMBeanOperationInfo extends MBeanOperationInfo
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 = 9087646304346171239L;
//
// Serial version for new serial form
private static final long newSerialVersionUID = 6532732096650090465L;
//
// Serializable fields in old serial form
private static final ObjectStreamField[] oldSerialPersistentFields =
{
new ObjectStreamField("operationDescriptor", Descriptor.class),
new ObjectStreamField("currClass", String.class)
};
//
// Serializable fields in new serial form
private static final ObjectStreamField[] newSerialPersistentFields =
{
new ObjectStreamField("operationDescriptor", Descriptor.class)
};
//
// Actual serial version and serial form
private static final long serialVersionUID;
/**
* @serialField operationDescriptor Descriptor The descriptor containing the appropriate metadata for this instance
*/
private static final ObjectStreamField[] serialPersistentFields;
private static boolean compat = false;
static {
try {
PrivilegedAction act = new GetPropertyAction("jmx.serial.form");
String form = (String) 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 operationDescriptor = createDefaultDescriptor();
private static final String currClass = "ModelMBeanOperationInfo";
/**
* Constructs a ModelMBeanOperationInfo object with a default
* descriptor.
*
* @param operationMethod The java.lang.reflect.Method object
* describing the MBean operation.
* @param description A human readable description of the operation.
*/
public ModelMBeanOperationInfo(String description,
Method operationMethod)
{
super(description, operationMethod);
// create default descriptor
if (tracing())
{
trace("ModelMBeanOperationInfo(String,Method)","Executed");
}
operationDescriptor = createDefaultDescriptor();
}
/**
* Constructs a ModelMBeanOperationInfo object.
*
* @param operationMethod The java.lang.reflect.Method object
* describing the MBean operation.
* @param description A human readable description of the
* operation.
* @param descriptor An instance of Descriptor containing the
* appropriate metadata for this instance of the
* ModelMBeanOperationInfo. If it is null a default
* descriptor will be created. If the descriptor does not
* contain the fields "displayName" or "role" these fields are
* added in the descriptor with their default values.
*
* @exception RuntimeOperationsException Wraps an
* IllegalArgumentException. The descriptor is invalid, or
* descriptor field "name" is not equal to operation name, or
* descriptor field "DescriptorType" is not equal to
* "operation", or descriptor field "role" is not equal to
* "operation".
*
*/
public ModelMBeanOperationInfo(String description,
Method operationMethod,
Descriptor descriptor)
{
super(description, operationMethod);
if (tracing())
{
trace("ModelMBeanOperationInfo(String,Method,Descriptor)","Executed");
}
if (descriptor == null)
{
if (tracing())
{
trace("ModelMBeanOperationInfo()","Received null for new descriptor value, setting descriptor to default values");
}
operationDescriptor = createDefaultDescriptor();
} else
{
if (isValid(descriptor))
{
operationDescriptor = (Descriptor) descriptor.clone();
} else
{
operationDescriptor = createDefaultDescriptor();
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid descriptor passed in parameter"), ("Exception occured in ModelMBeanOperationInfo constructor"));
}
}
}
/**
* Constructs a ModelMBeanOperationInfo object with a default descriptor.
*
* @param name The name of the method.
* @param description A human readable description of the operation.
* @param signature MBeanParameterInfo objects describing the parameters(arguments) of the method.
* @param type The type of the method's return value.
* @param impact The impact of the method, one of INFO, ACTION, ACTION_INFO, UNKNOWN.
*/
public ModelMBeanOperationInfo(String name,
String description,
MBeanParameterInfo[] signature,
String type,
int impact)
{
super(name, description, signature, type, impact);
// create default descriptor
if (tracing())
{
trace("ModelMBeanOperationInfo(String,String,MBeanParameterInfo[],String,int)","Executed");
}
operationDescriptor = createDefaultDescriptor();
}
/**
* Constructs a ModelMBeanOperationInfo object.
*
* @param name The name of the method.
* @param description A human readable description of the operation.
* @param signature MBeanParameterInfo objects describing the parameters(arguments) of the method.
* @param type The type of the method's return value.
* @param impact The impact of the method, one of INFO, ACTION, ACTION_INFO, UNKNOWN.
* @param descriptor An instance of Descriptor containing the appropriate metadata.
* for this instance of the MBeanOperationInfo.If it is null then a default descriptor will be created.
* If the descriptor does not contain the fields
* "displayName" or "role" these fields are added in the descriptor with their default values.
*
* @exception RuntimeOperationsException Wraps an IllegalArgumentException. The descriptor is invalid, or descriptor field "name"
* is not equal to operation name, or descriptor field "DescriptorType" is not equal to "operation", or descriptor field "role" is not equal to
* "operation".
*/
public ModelMBeanOperationInfo(String name,
String description,
MBeanParameterInfo[] signature,
String type,
int impact,
Descriptor descriptor)
{
super(name, description, signature, type, impact);
if (tracing())
{
trace("ModelMBeanOperationInfo(String,String,MBeanParameterInfo[],String,int,Descriptor)","Executed");
}
if (descriptor == null)
{
if (tracing())
{
trace("ModelMBeanOperationInfo()","Received null for new descriptor value, setting descriptor to default values");
}
operationDescriptor = createDefaultDescriptor();
} else
{
if (isValid(descriptor))
{
operationDescriptor = (Descriptor) descriptor.clone();
} else
{
operationDescriptor = createDefaultDescriptor();
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid descriptor passed in parameter"), ("Exception occured in ModelMBeanOperationInfo constructor"));
}
}
}
/**
* Constructs a new ModelMBeanOperationInfo object from this ModelMBeanOperation Object.
*
* @param inInfo the ModelMBeanOperationInfo to be duplicated
*
*/
public ModelMBeanOperationInfo(ModelMBeanOperationInfo inInfo)
{
super(inInfo.getName(),
inInfo.getDescription(),
inInfo.getSignature(),
inInfo.getReturnType(),
inInfo.getImpact());
if (tracing())
{
trace("ModelMBeanOperationInfo(ModelMBeanOperationInfo)","Executed");
}
Descriptor newDesc = inInfo.getDescriptor();
if (newDesc == null)
{
operationDescriptor = createDefaultDescriptor();
} else
{
if (isValid(newDesc))
{
operationDescriptor = (Descriptor) newDesc.clone();
} else
{
operationDescriptor = createDefaultDescriptor();
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid descriptor passed in parameter"), ("Exception occured in ModelMBeanOperationInfo constructor"));
}
}
}
/**
* Creates and returns a new ModelMBeanOperationInfo which is a duplicate of this ModelMBeanOperationInfo.
*
*/
public Object clone ()
{
if (tracing())
{
trace("ModelMBeanOperationInfo.clone()","Executed");
}
return(new ModelMBeanOperationInfo(this)) ;
}
/**
* Returns a copy of the associated Descriptor of the
* ModelMBeanOperationInfo.
*
* @return Descriptor associated with the
* ModelMBeanOperationInfo object.
*
* @see #setDescriptor
*/
public Descriptor getDescriptor()
{
if (tracing())
{
trace("ModelMBeanOperationInfo.getDescriptor()","Executed");
}
if (operationDescriptor == null)
{
operationDescriptor = createDefaultDescriptor();
}
return((Descriptor) operationDescriptor.clone());
}
/**
* Sets associated Descriptor (full replace) for the
* ModelMBeanOperationInfo 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
* ModelMBeanOperation.
*
* @exception RuntimeOperationsException Wraps an
* IllegalArgumentException for invalid Descriptor.
*
* @see #getDescriptor
*/
public void setDescriptor(Descriptor inDescriptor)
{
if (tracing())
{
trace("ModelMBeanOperationInfo.setDescriptor(Descriptor)","Executed");
}
if (inDescriptor == null)
{
if (tracing())
{
trace("ModelMBeanOperationInfo.setDescriptor()","Received null for new descriptor value, setting descriptor to default values");
}
operationDescriptor = createDefaultDescriptor();
} else
{
if (isValid(inDescriptor))
{
operationDescriptor = (Descriptor) inDescriptor.clone();
} else
{
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid descriptor passed in parameter"), ("Exception occured in ModelMBeanOperationInfo setDescriptor"));
}
}
}
/**
* Returns a string containing the entire contents of the ModelMBeanOperationInfo in human readable form.
*/
public String toString()
{
if (tracing())
{
trace("ModelMBeanConstructorInfo.toString()","Executed");
}
String retStr =
"ModelMBeanOperationInfo: " + this.getName() +
" ; Description: " + this.getDescription() +
" ; Descriptor: " + this.getDescriptor() +
" ; ReturnType: " + this.getReturnType() +
" ; Signature: ";
MBeanParameterInfo[] pTypes = this.getSignature();
for (int i=0; i < pTypes.length; i++)
{
retStr = retStr.concat((pTypes[i]).getType() + ", ");
}
return retStr;
}
/**
* Creates default descriptor for operation as follows:
* descriptorType=operation,role=operation, name=this.getName(),displayname=this.getName().
*/
private Descriptor createDefaultDescriptor()
{
if (tracing())
{
trace("ModelMBeanOperationInfo.createDefaultDescriptor()","Executed");
}
return new DescriptorSupport(new String[] {"descriptorType=operation",
("name=" + this.getName()),
"role=operation",
("displayname=" + this.getName())});
}
/**
* Tests that the descriptor is valid and adds appropriate
* default fields not already specified. Field values must be
* correct for field names. descriptorType field must be
* "operation". We do not check the targetType because a
* custom implementation of ModelMBean could recognize
* additional types beyond the "standard" ones. The following
* fields will be defaulted if they are not already set:
* role=operation,displayName=this.getName()
*/
private boolean isValid(Descriptor inDesc)
{
boolean results = true;
String badField = "none";
// if name != this.getName
// if (descriptorType != operation)
// look for displayName, persistPolicy, visibility and add in
if (inDesc == null)
{
results = false;
}
else if (!inDesc.isValid())
{ // checks for empty descriptors, null,
// checks for empty name and descriptorType
// and valid values for fields.
results = false;
} else
{
if (! ((String)inDesc.getFieldValue("name")).equalsIgnoreCase(this.getName()))
{
results = false;
}
if (! ((String)inDesc.getFieldValue("descriptorType")).equalsIgnoreCase("operation"))
{
results = false;
}
Object roleValue = inDesc.getFieldValue("role");
if (roleValue == null)
{
inDesc.setField("role","operation");
} else {
final String role = (String)roleValue;
if (!(role.equalsIgnoreCase("operation")
|| role.equalsIgnoreCase("setter")
|| role.equalsIgnoreCase("getter"))) {
results = false;
badField="role";
}
}
Object targetValue = inDesc.getFieldValue("targetType");
if (targetValue != null) {
if (!(targetValue instanceof java.lang.String)) {
results = false;
badField="targetType";
}
}
if ((inDesc.getFieldValue("displayName")) == null)
{
inDesc.setField("displayName",this.getName());
}
}
if (tracing()) trace("isValid()",("Returning " + results + ": Invalid field is " + badField));
return results;
}
// SUN Trace and debug functions
private boolean tracing()
{
// return false;
return Trace.isSelected(Trace.LEVEL_TRACE, Trace.INFO_MODELMBEAN);
}
private void trace(String inClass, String inMethod, String inText)
{
// System.out.println("TRACE: " + inClass + ":" + inMethod + ": " + inText);
Trace.send(Trace.LEVEL_TRACE, Trace.INFO_MODELMBEAN, inClass,
inMethod, Integer.toHexString(this.hashCode()) + " " + inText);
}
private void trace(String inMethod, String inText)
{
trace(currClass, inMethod, inText);
}
/**
* Deserializes a {@link ModelMBeanOperationInfo} from an {@link ObjectInputStream}.
*/
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
// New serial form ignores extra field "currClass"
in.defaultReadObject();
}
/**
* Serializes a {@link ModelMBeanOperationInfo} 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("operationDescriptor", operationDescriptor);
fields.put("currClass", currClass);
out.writeFields();
}
else
{
// Serializes this instance in the new serial form
//
out.defaultWriteObject();
}
}
}
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