Package com.tangosol.net.management

Class MBeanAccessor

java.lang.Object

com.tangosol.net.management.MBeanAccessor

public class MBeanAccessor
extends Object

MBeanAccessor provides a means to access JMX MBeans via the Coherence Management Server (a single MBeanServer with an aggregated view of MBeans for the entire cluster).

This API provides a means to query MBeans, get and update MBean attributes, and invoke MBean operations. Ultimately this allows a client to use Coherence's transport to communicate with the MBeanServer to interrogate MBeans.

Since:

12.2.1.4.0

Author:

sr/hr

See Also:

• Introduction to Oracle Coherence Management

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MBeanAccessor.GetAttributes	The Remote.Function for the MBeanServerConnection.getAttributes method.
static class	MBeanAccessor.Invoke	The Remote.Function for the MBeanServerConnection.invoke method.
static class	MBeanAccessor.QueryBuilder	The Query Builder for generating Coherence MBean queries.
static class	MBeanAccessor.SetAttributes	The Remote.Function for the MBeanServerConnection.setAttributes method.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CLUSTER	The "cluster" key in the ObjectName.
protected final MBeanServerProxy	f_mbeanServerProxy	The MBeanServerProxy to be used for MBean operations.
static final String	MEMBER	The "member" key in the ObjectName.
static final String	NAME	The "name" key in the ObjectName.
static final String	NODE_ID	The "nodeId" key in the ObjectName.
static final String	SERVICE	The "service" key in the ObjectName.
static final String	STORAGE_MANAGER_QUERY	MBean query to filter out StorageManager MBean of a specific cache and service, running on a specific node.
static final String	TIER	The "tier" key in the ObjectName.
static final String	TYPE	The "type" key in the ObjectName.

Constructor Summary

Constructors

Constructor	Description
MBeanAccessor()	Default Constructor.
MBeanAccessor(MBeanServerProxy mBeanServerProxy)	Create an instance of MBeanAccessor.

Method Summary

Modifier and Type	Method	Description
Map<String,Object>	aggregate(MBeanAccessor.QueryBuilder.ParsedQuery query, String sLocator, String sAttribute, String sCollector)	Process the request for MBean attributes.
Map<String,Map<String,Object>>	getAttributes(MBeanAccessor.QueryBuilder.ParsedQuery query)	Return all the attributes that match the query expressed by the provided MBeanAccessor.QueryBuilder.
Map<String,Map<String,Object>>	getAttributes(MBeanAccessor.QueryBuilder.ParsedQuery query, Filter<MBeanAttributeInfo> filter, boolean fAddStorageMBeanAttributes)	Return all the attributes that match the query expressed by the provided MBeanAccessor.QueryBuilder.
Map<String,Object>	invoke(MBeanAccessor.QueryBuilder.ParsedQuery query, String sOperationName, Object[] aoArguments, String[] asSignature)	Invoke a JMX MBean operation on one or many MBeans determined by the provided MBeanAccessor.QueryBuilder.
Set<String>	queryKeys(MBeanAccessor.QueryBuilder.ParsedQuery query)	Return a list of MBean ObjectNames determined by the provided MBeanAccessor.QueryBuilder.
Map<String,Map<String,Object>>	update(MBeanAccessor.QueryBuilder.ParsedQuery query, Map<String,Object> mapAttributes)	Update all JMX MBeans determined by evaluating the provided MBeanAccessor.QueryBuilder.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

f_mbeanServerProxy

protected final MBeanServerProxy f_mbeanServerProxy

The MBeanServerProxy to be used for MBean operations.

NAME

public static final String NAME

The "name" key in the ObjectName.

See Also:

• Constant Field Values

TYPE

public static final String TYPE

The "type" key in the ObjectName.

See Also:

• Constant Field Values

SERVICE

public static final String SERVICE

The "service" key in the ObjectName.

TIER

public static final String TIER

The "tier" key in the ObjectName.

See Also:

• Constant Field Values

NODE_ID

public static final String NODE_ID

The "nodeId" key in the ObjectName.

MEMBER

public static final String MEMBER

The "member" key in the ObjectName.

CLUSTER

public static final String CLUSTER

The "cluster" key in the ObjectName.

STORAGE_MANAGER_QUERY

public static final String STORAGE_MANAGER_QUERY

MBean query to filter out StorageManager MBean of a specific cache and service, running on a specific node.

See Also:

• Constant Field Values

Constructor Details

MBeanAccessor

public MBeanAccessor()

Default Constructor.

MBeanAccessor

public MBeanAccessor(MBeanServerProxy mBeanServerProxy)

Create an instance of MBeanAccessor.

Parameters:

mBeanServerProxy - the MBeanServerProxy to be used

Method Details

getAttributes

public Map<String,Map<String,Object>> getAttributes(MBeanAccessor.QueryBuilder.ParsedQuery query)

Return all the attributes that match the query expressed by the provided MBeanAccessor.QueryBuilder.

Note: the return type is keyed by the full ObjectName registered with the MBeanServer and a Map of attribute name to value

Parameters:

query - the MBeanAccessor.QueryBuilder.ParsedQuery to be used to determine applicable MBeans

Returns:

a Map keyed by the full ObjectName registered with the MBeanServer and a Map of attribute name to value

getAttributes

public Map<String,Map<String,Object>> getAttributes(MBeanAccessor.QueryBuilder.ParsedQuery query,
 Filter<MBeanAttributeInfo> filter,
 boolean fAddStorageMBeanAttributes)

Return all the attributes that match the query expressed by the provided MBeanAccessor.QueryBuilder.

Note: the return type is keyed by the full ObjectName registered with the MBeanServer and a Map of attribute name to value

Parameters:

query - the MBeanAccessor.QueryBuilder.ParsedQuery to be used to determine applicable MBeans

filter - server side filter for what attributes to return

fAddStorageMBeanAttributes - add storage MBean attributes to CacheMBean tier="back" attributes.

Returns:

a Map keyed by the full ObjectName registered with the MBeanServer and a Map of attribute name to value

invoke

public Map<String,Object> invoke(MBeanAccessor.QueryBuilder.ParsedQuery query,
 String sOperationName,
 Object[] aoArguments,
 String[] asSignature)

Invoke a JMX MBean operation on one or many MBeans determined by the provided MBeanAccessor.QueryBuilder.

Parameters:

query - the MBeanAccessor.QueryBuilder.ParsedQuery to be used to determine applicable MBeans

sOperationName - the name of the operation

aoArguments - the arguments of the operation

asSignature - the signature of the operation

Returns:

a Map keyed by the full ObjectName registered with the MBeanServer and the value returned by invoking the operation

update

public Map<String,Map<String,Object>> update(MBeanAccessor.QueryBuilder.ParsedQuery query,
 Map<String,Object> mapAttributes)

Update all JMX MBeans determined by evaluating the provided MBeanAccessor.QueryBuilder. All attributes in the provided map will be updated on the corresponding MBean(s) iff the attribute is present.

A Set of ObjectNames corresponding to the updated MBeans is returned. These MBeans have been updated with the matching attributes provided to this update method. Attributes not present on the targeted MBean are silently ignored unless there are no attributes that match and therefore will be absent from the returned set of ObjectNames.

Parameters:

query - the MBeanAccessor.QueryBuilder.ParsedQuery to be used to determine applicable MBeans

mapAttributes - the attributes to update

Returns:

a map keyed by ObjectNames updated with the map of attributes that were updated (based on the attributes present on the MBean)

queryKeys

public Set<String> queryKeys(MBeanAccessor.QueryBuilder.ParsedQuery query)

Return a list of MBean ObjectNames determined by the provided MBeanAccessor.QueryBuilder.

Parameters:

query - the MBeanAccessor.QueryBuilder.ParsedQuery to be used to determine applicable MBeans

Returns:

the Set of MBean ObjectNames

aggregate

public Map<String,Object> aggregate(MBeanAccessor.QueryBuilder.ParsedQuery query,
 String sLocator,
 String sAttribute,
 String sCollector)

Process the request for MBean attributes.

The requested MBean solely depends on the 'type' input. This may be one of the values specified in the mbean types constant.

The processing can be modified in three ways:

1. reducing the data (querying)
2. choosing the collector implementation (aggregating)
3. select the attributes to return

The data can be reduced by specifying a context sensitive name. This name is either the cache name, service name or a concatenation of service name and cache name delimited by '!'. In addition, either a regular expression evaluated against nodeIds or specifying a role name is supported to reduce the MBeans to interrogate.

If the data is not reduced to a single MBean some attribute level aggregation is applied to the MBeans. By default this aggregation is a list, however each attribute may specify its own default as defined in the service or cache enums.

Either all attributes are returned or a single attribute based upon the absence or presence, respectively, of the attribute in the URI.

Parameters:

query - the MBeanAccessor.QueryBuilder to be used to generate MBean query

sLocator - either a regex to be applied against nodeids or a role name

sAttribute - the attribute to return

sCollector - the collector to use instead of the default

Returns:

a Map of attribute name to attribute value; the attribute value may be the result of an aggregation based upon the request