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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.service.management.jmx.instrument;
import java.util.Map;
import java.net.URI;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.AttributeNotFoundException;
import javax.management.DynamicMBean;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanConstructorInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanOperationInfo;
import org.apache.tuscany.spi.component.Component;
import org.apache.tuscany.spi.model.PropertyValue;
/**
* This is Ruscany component exposed as a dynamic MBean. Currently it only supports a read-only vew of all the
* properties on the component.
*
* @version $Revision$ $Date$
*/
public class InstrumentedComponent implements DynamicMBean {
/**
* Properties available on the component.
*/
private final Map<String, PropertyValue<?>> properties;
/**
* Name of the component.
*/
private URI componentId;
/**
* Initializes the property values.
*
* @param component Component that is being managed.
*/
@SuppressWarnings("unchecked")
public InstrumentedComponent(final Component component) {
this.properties = component.getDefaultPropertyValues();
this.componentId = component.getUri();
}
/**
* @see javax.management.DynamicMBean#getAttribute(java.lang.String)
*/
public final Object getAttribute(final String attribute) throws AttributeNotFoundException {
PropertyValue<?> propertyValue = properties.get(attribute);
if (propertyValue != null) {
return propertyValue.getValueFactory().getInstance();
}
throw new AttributeNotFoundException(attribute + " not found.");
}
/**
* @see javax.management.DynamicMBean#getAttributes(java.lang.String[])
*/
public final AttributeList getAttributes(final String[] attributes) {
AttributeList list = new AttributeList();
for (String attribute : attributes) {
try {
list.add(new Attribute(attribute, getAttribute(attribute)));
} catch (AttributeNotFoundException ex) {
throw new InstrumentationException(ex);
}
}
return list;
}
/**
* @see javax.management.DynamicMBean#getMBeanInfo()
*/
public final MBeanInfo getMBeanInfo() {
final MBeanConstructorInfo[] constructors = null;
final MBeanOperationInfo[] operations = null;
final MBeanNotificationInfo[] notifications = null;
int size = properties != null ? properties.size() : 0;
final MBeanAttributeInfo[] attributes = new MBeanAttributeInfo[size];
if(properties != null) {
int i = 0;
for (PropertyValue<?> propertyValue : properties.values()) {
attributes[i++] =
new MBeanAttributeInfo(propertyValue.getName(), String.class.getName(), null, true, false, false);
}
}
return new MBeanInfo(componentId.toString(), null, attributes, constructors, operations, notifications);
}
/**
* @see javax.management.DynamicMBean#invoke(java.lang.String,java.lang.Object[],java.lang.String[])
*/
public final Object invoke(final String actionName, final Object[] params, final String[] signature) {
throw new UnsupportedOperationException("Managed ops not supported");
}
/**
* @see javax.management.DynamicMBean#setAttribute(javax.management.Attribute)
*/
public final void setAttribute(final Attribute attribute) {
throw new UnsupportedOperationException("Mutable props not supported");
}
/**
* @see javax.management.DynamicMBean#setAttributes(javax.management.AttributeList)
*/
public final AttributeList setAttributes(final AttributeList attributes) {
throw new UnsupportedOperationException("Mutable props not supported");
}
}
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