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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.qpid.management.jmx;
import org.apache.qpid.AMQException;
import org.apache.qpid.schema.cml.CmlDocument;
import org.apache.qpid.schema.cml.FieldType;
import org.apache.qpid.schema.cml.MethodType;
import org.apache.qpid.schema.cml.SchemaReplyType;
import javax.management.modelmbean.DescriptorSupport;
import javax.management.openmbean.*;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Stores all OpenMBeanInfo instances.
* <p/>
* Builds MBeanInfo instances from the CML schema (which is parsed by XMLBeans) and
* stores these indexed by CML class name.
* <p/>
* When constructing a DynamicMBean this registry is consulted for the MBeanInfo.
*
*/
public class MBeanInfoRegistry
{
private Map<String, OpenMBeanInfoSupport> _cmlClass2OpenMBeanInfoMap = new HashMap<String, OpenMBeanInfoSupport>();
private Map<String, AMQMBeanInfo> _cmlClass2AMQMBeanInfoMap = new HashMap<String, AMQMBeanInfo>();
public MBeanInfoRegistry(CmlDocument cmlDocument) throws AMQException
{
initialise(cmlDocument);
}
private void initialise(CmlDocument cmlDocument) throws AMQException
{
CmlDocument.Cml cml = cmlDocument.getCml();
SchemaReplyType schema = cml.getSchemaReply();
for (org.apache.qpid.schema.cml.ClassType c : schema.getClass1List())
{
OpenMBeanAttributeInfo[] attributes = createAttributeInfos(c.getFieldList());
OpenMBeanOperationInfo[] operations = createOperationInfos(c.getMethodList());
String className = c.getName();
OpenMBeanInfoSupport support = new OpenMBeanInfoSupport(className, null, attributes,
null, operations, null);
// we need to store the extra information separately since we cannot subclass
// OpenMBeanInfoSupport. Doing so means we need to have an AMQMBeanInfo class on each client
// which defeats the point of OpenMBeans. The extra info is only used by the CMLBean implementation
// to assist with runtime value lookups.
AMQMBeanInfo extra = new AMQMBeanInfo(attributes);
_cmlClass2OpenMBeanInfoMap.put(className, support);
_cmlClass2AMQMBeanInfoMap.put(className, extra);
}
}
public OpenMBeanInfoSupport getOpenMBeanInfo(String cmlType)
{
return _cmlClass2OpenMBeanInfoMap.get(cmlType);
}
public AMQMBeanInfo getAMQMBeanInfo(String cmlType)
{
return _cmlClass2AMQMBeanInfoMap.get(cmlType);
}
private OpenMBeanAttributeInfo[] createAttributeInfos(List<FieldType> fields)
throws AMQException
{
OpenMBeanAttributeInfo[] attributes = new OpenMBeanAttributeInfo[fields.size() + 1];
// we up the parent attribute which is always present
try
{
DescriptorSupport descriptor = new DescriptorSupport(new String[]{"hidden=true"});
attributes[attributes.length - 1] = new OpenMBeanAttributeInfoSupport(CMLMBean.PARENT_ATTRIBUTE,
"Parent", SimpleType.OBJECTNAME,
true, false, false);
//descriptor); JDK 1.6 only
}
catch (Exception e)
{
// should never happen
throw new AMQException("Unable to create Parent attribute", e);
}
// add all the type-specific attributes
for (int i = 0; i < attributes.length - 1; i++)
{
FieldType field = fields.get(i);
OpenType openType = getOpenType(field.getType(), field.getModify());
String description = field.getLabel();
attributes[i] = new OpenMBeanAttributeInfoSupport(field.getName(),
description != null ? description:"No description",
openType,
true,
field.getModify(),
openType == SimpleType.BOOLEAN);
}
return attributes;
}
private static OpenType getOpenType(FieldType.Type.Enum type, boolean isArray)
throws UnsupportedCMLTypeException, AMQException
{
SimpleType simpleType;
boolean primitive;
switch (type.intValue())
{
// the constants are not public (bug in xmlbeans) so we cannot use
// the constants that are defined
// TODO: raise defect with xmlbeans projects
case 1:
simpleType = SimpleType.BOOLEAN;
primitive = true;
break;
case 2:
simpleType = SimpleType.STRING;
primitive = false;
break;
case 3:
simpleType = SimpleType.INTEGER;
primitive = true;
break;
case 4:
simpleType = SimpleType.OBJECTNAME;
primitive = false;
break;
case 5:
simpleType = SimpleType.DATE;
primitive = false;
break;
default:
throw new UnsupportedCMLTypeException(type.toString());
}
if (isArray)
{
try
{
//return new ArrayType(simpleType, primitive);
return new ArrayType(1, simpleType);
}
catch (OpenDataException e)
{
throw new AMQException("Error constructing array type: " + e, e);
}
}
else
{
return simpleType;
}
}
private OpenMBeanOperationInfo[] createOperationInfos(List<MethodType> methods)
throws AMQException
{
OpenMBeanOperationInfo[] methodInfos = new OpenMBeanOperationInfo[methods.size()];
for (int i = 0; i < methodInfos.length; i++)
{
MethodType methodType = methods.get(i);
OpenMBeanParameterInfo[] parameters = createParameterInfos(methodType.getFieldList());
methodInfos[i] = new OpenMBeanOperationInfoSupport(methodType.getName(), "No description",
parameters, SimpleType.VOID,
OpenMBeanOperationInfoSupport.ACTION);
}
return methodInfos;
}
private OpenMBeanParameterInfo[] createParameterInfos(List<FieldType> parameters)
throws AMQException
{
OpenMBeanParameterInfo[] paramInfos = new OpenMBeanParameterInfo[parameters.size()];
for (int i = 0; i < paramInfos.length; i++)
{
FieldType field = parameters.get(i);
String description = field.getLabel();
OpenType openType = getOpenType(field.getType(), field.getModify());
paramInfos[i] = new OpenMBeanParameterInfoSupport(field.getName(),
description==null?"No description":description,
openType);
}
return paramInfos;
}
}
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