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/*
* Copyright (c) OSGi Alliance (2009, 2010). All Rights Reserved.
*
* Licensed 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.osgi.jmx.framework;
import java.io.IOException;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.SimpleType;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularType;
import org.osgi.jmx.Item;
import org.osgi.jmx.JmxConstants;
/**
* This MBean represents the Service state of the framework. This MBean also
* emits events that clients can use to get notified of the changes in the
* service state of the framework.
*
* @version $Revision: 8748 $
* @ThreadSafe
*/
public interface ServiceStateMBean {
/**
* The fully qualified object name of this mbean.
*/
String OBJECTNAME = JmxConstants.OSGI_CORE
+ ":type=serviceState,version=1.5";
/**
* The key BUNDLE_IDENTIFIER, used in {@link #BUNDLE_IDENTIFIER_ITEM}.
*/
String BUNDLE_IDENTIFIER = "BundleIdentifier";
/**
* The item containing the bundle identifier in {@link #SERVICE_TYPE}. The
* key is {@link #BUNDLE_IDENTIFIER} and the type is {@link SimpleType#LONG}
* .
*/
Item BUNDLE_IDENTIFIER_ITEM = new Item(BUNDLE_IDENTIFIER,
"The identifier of the bundle the service belongs to",
SimpleType.LONG);
/**
* The key OBJECT_CLASS, used {@link #OBJECT_CLASS_ITEM}.
*/
String OBJECT_CLASS = "objectClass";
/**
* The item containing the interfaces of the service in
* {@link #SERVICE_TYPE}. The key is {@link #OBJECT_CLASS} and the type is
* {@link JmxConstants#STRING_ARRAY_TYPE}.
*/
Item OBJECT_CLASS_ITEM = new Item(
OBJECT_CLASS,
"An string array containing the interfaces under which the service has been registered",
JmxConstants.STRING_ARRAY_TYPE);
/**
* The key IDENTIFIER, used {@link #IDENTIFIER_ITEM}.
*/
String IDENTIFIER = "Identifier";
/**
* The item containing the service identifier in {@link #SERVICE_TYPE}. The
* key is {@link #IDENTIFIER} and the type is {@link SimpleType#LONG}.
*/
Item IDENTIFIER_ITEM = new Item(IDENTIFIER,
"The identifier of the service", SimpleType.LONG);
/**
* The key USING_BUNDLES, used in {@link #USING_BUNDLES_ITEM}.
*/
String USING_BUNDLES = "UsingBundles";
/**
* The item containing the bundles using the service in
* {@link #SERVICE_TYPE}. The key is {@link #USING_BUNDLES} and the type is
* {@link JmxConstants#LONG_ARRAY_TYPE}.
*/
Item USING_BUNDLES_ITEM = new Item(USING_BUNDLES,
"The bundles using the service", JmxConstants.LONG_ARRAY_TYPE);
/**
* The Composite Type for a CompositeData representing a service. This type
* consists of:
*
*
{@link #BUNDLE_IDENTIFIER}
*
{@link #IDENTIFIER}
*
{@link #OBJECT_CLASS}
*
{@link #USING_BUNDLES}
*
*/
CompositeType SERVICE_TYPE = Item.compositeType("SERVICE",
"This type encapsulates an OSGi service", BUNDLE_IDENTIFIER_ITEM,
IDENTIFIER_ITEM, OBJECT_CLASS_ITEM,
USING_BUNDLES_ITEM);
/**
* The Tabular Type for a Service table. The rows consists of
* {@link #SERVICE_TYPE} Composite Data and the index is {@link #IDENTIFIER}
* .
*/
TabularType SERVICES_TYPE = Item.tabularType("SERVICES",
"The table of all services", SERVICE_TYPE, IDENTIFIER);
/**
* The key BUNDLE_LOCATION, used in {@link #SERVICE_EVENT_TYPE}.
*/
String BUNDLE_LOCATION = "BundleLocation";
/**
* The item containing the bundle location in {@link #EVENT_ITEM}. The key
* is {@link #BUNDLE_LOCATION} and the the type is {@link SimpleType#STRING}
* .
*/
Item BUNDLE_LOCATION_ITEM = new Item(BUNDLE_LOCATION,
"The location of the bundle", SimpleType.STRING);
/**
* The key BUNDLE_SYMBOLIC_NAME, used in {@link #SERVICE_EVENT_TYPE}.
*/
String BUNDLE_SYMBOLIC_NAME = "BundleSymbolicName";
/**
* The item containing the symbolic name in {@link #EVENT}. The key is
* {@link #BUNDLE_SYMBOLIC_NAME} and the the type is
* {@link SimpleType#STRING}.
*/
Item BUNDLE_SYMBOLIC_NAME_ITEM = new Item(BUNDLE_SYMBOLIC_NAME,
"The symbolic name of the bundle", SimpleType.STRING);
/**
* The key EVENT, used in {@link #EVENT_ITEM}.
*/
String EVENT = "ServiceEvent";
/**
* The item containing the event type. The key is {@link #EVENT} and the
* type is {@link SimpleType#INTEGER}
*/
Item EVENT_ITEM = new Item(
EVENT,
"The eventType of the event: {REGISTERED=1, MODIFIED=2 UNREGISTERING=3}",
SimpleType.INTEGER);
/**
* The Composite Type that represents a service event. This composite
* consists of:
*
*
{@link #IDENTIFIER}
*
{@link #OBJECT_CLASS}
*
{@link #BUNDLE_LOCATION}
*
{@link #BUNDLE_SYMBOLIC_NAME}
*
{@link #EVENT}
*
*/
CompositeType SERVICE_EVENT_TYPE = Item.compositeType("SERVICE_EVENT",
"This type encapsulates OSGi service events", IDENTIFIER_ITEM,
OBJECT_CLASS_ITEM, BUNDLE_IDENTIFIER_ITEM, BUNDLE_LOCATION_ITEM,
BUNDLE_SYMBOLIC_NAME_ITEM, EVENT_ITEM);
/**
* Answer the list of interfaces that this service implements
*
* @param serviceId
* the identifier of the service
* @return the list of interfaces
* @throws IOException
* if the operation fails
* @throws IllegalArgumentException
* if the service indicated does not exist
*/
public String[] getObjectClass(long serviceId) throws IOException;
/**
* Answer the bundle identifier of the bundle which registered the service
*
* @param serviceId
* the identifier of the service
* @return the identifier for the bundle
* @throws IOException
* if the operation fails
* @throws IllegalArgumentException
* if the service indicated does not exist
*/
long getBundleIdentifier(long serviceId) throws IOException;
/**
* Answer the map of properties associated with this service
*
* @see JmxConstants#PROPERTIES_TYPE for the details of the TabularType
*
* @param serviceId
* the identifier of the service
* @return the table of properties. These include the standard mandatory
* service.id and objectClass properties as defined in the
* org.osgi.framework.Constants interface
* @throws IOException
* if the operation fails
* @throws IllegalArgumentException
* if the service indicated does not exist
*/
TabularData getProperties(long serviceId) throws IOException;
/**
* Answer the service state of the system in tabular form.
*
* @see #SERVICES_TYPE for the details of the TabularType
*
* @return the tabular representation of the service state
* @throws IOException
* If the operation fails
* @throws IllegalArgumentException
* if the service indicated does not exist
*/
TabularData listServices() throws IOException;
/**
* Answer the list of identifiers of the bundles that use the service
*
* @param serviceId
* the identifier of the service
* @return the list of bundle identifiers
* @throws IOException
* if the operation fails
* @throws IllegalArgumentException
* if the service indicated does not exist
*/
long[] getUsingBundles(long serviceId) throws IOException;
}
