org.oddjob.jmx

Class JMXServerJob

java.lang.Object

org.oddjob.jmx.JMXServerJob

All Implemented Interfaces:

ArooaSessionAware

public class JMXServerJob
extends Object
implements ArooaSessionAware

Description

A service which allows a job hierarchy to be monitored and managed remotely using a JMXClientJob.

Security can be added using the environment property. Simple JMX security comes prepackaged as SimpleServerSecurity. Note that the access file is an Oddjob specific access file. Oddjob requires full read/write access because it uses JMX operations and all JMX operation require full read/write access. Oddjob uses a JMX access format file but provides it's own primitive access control on top the JMX layer. Oddjob's access control removes an entire java interface from the client side proxy if any of it's methods are write. One affect of this is that a read only account can't access properties of the remote job with the ${server/remote-job} syntax because this functionality is provided by the same interface (BeanUtils DynaBean) that allows a remote job's properties to be written.

For more information on JMX Security see The JMX Tutorial.

This service will use the Platform MBeanServer if no url property is provided. Creating an unsecured Oddjob server on a private network can be achieved simply by launching Oddjob with a command line such as:

 java -Dcom.sun.management.jmxremote.port=nnnn \
 -Dcom.sun.management.jmxremote.ssl=false \
 -Dcom.sun.management.jmxremote.authenticate=false \
 -jar run-oddjob.jar -f my-config.xml
 

And then including this service somewhere in the configuration. Note that the properties must be to the left of the -jar, not to the right because the must be available to the JVM before Oddjob starts.

The server.xml Oddjob configration file in Oddjob's top level directory provides a simple Oddjob server that uses an RMI Registry.

More information on Oddjob servers can be found in the User Guide under 'Sharing Jobs on the Network'.

Example

Creating a server using the platform MBean Server.

<oddjob xmlns:jmx="http://rgordon.co.uk/oddjob/jmx">
  <job>
    <sequential>
      <jobs>
        <jmx:server root="${echo}"/>
        <echo id="echo">Hello from an Oddjob Server!</echo>
      </jobs>
    </sequential>
  </job>
</oddjob>

This is probably the simplest way to launch Oddjob as a server.

Here's an example of the command used to launch it:

 java -Dcom.sun.management.jmxremote.port=13013 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -jar C:\Users\rob\projects\oddjob\run-oddjob.jar -f C:\Users\rob\projects\oddjob\test\java\org\oddjob\jmx\PlatformMBeanServerExample.xml
 

For an example of a client to connect to this server see the first example for JMXClientJob.

Example

Creating a server using an RMI registry.

<oddjob id="this">
    <job>
        <sequential>
            <jobs>
                <rmireg/>
                <jmx:server id="server1" root="${server-jobs}" url="service:jmx:rmi://ignored/jndi/rmi://localhost/freds-oddjob-server" xmlns:jmx="http://rgordon.co.uk/oddjob/jmx"/>
                <oddjob file="${this.dir}/ServerJobs.xml" id="server-jobs"/>
            </jobs>
        </sequential>
    </job>
</oddjob>

The nested Oddjob can be any normal Oddjob configuration. Here is the nested Oddjob used in some client examples. The greeting is in a folder because it will only be run from the client.

<oddjob>
    <job>
        <folder>
            <jobs>
                <echo id="greeting">Hello World</echo>
            </jobs>
        </folder>
    </job>
</oddjob>

Example

Creating a secure server.

<jmx:server root="${some-job}" url="service:jmx:rmi://ignored/jndi/rmi://localhost/my-oddjob" xmlns:jmx="http://rgordon.co.uk/oddjob/jmx">
    <environment>
        <jmx:server-security>
            <passwordFile>
                <file file="C:\rob\java\jmx_examples\Security\simple\config\password.properties"/>
            </passwordFile>
        </jmx:server-security>
    </environment>
</jmx:server>

Author:

Rob Gordon

Field Summary

Fields

Modifier and Type	Field and Description
static String	ACCESS_FILE_PROPERTY

Constructor Summary

Constructors

Constructor and Description
JMXServerJob()

Method Summary

Methods

Modifier and Type	Method and Description
String	getAddress()
Map<String,?>	getEnvironment()
HandlerFactoryProvider	getHandlerFactories()
String	getLogFormat()
String	getName() Get the name.
Object	getRoot() Get the root node of the monitor tree.
String	getUrl() Get the name the root node is bound as in the naming service.
void	setArooaSession(ArooaSession session)
void	setEnvironment(Map<String,?> environment)
void	setHandlerFactories(HandlerFactoryProvider handlerFactories)
void	setLogFormat(String logFormat)
void	setName(String name) Set the name
void	setRoot(Object rootNode) Set the root node directly.
void	setUrl(String bindAs) Set the name to bind the root node as in the naming service.
void	start()
void	stop()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ACCESS_FILE_PROPERTY

public static final String ACCESS_FILE_PROPERTY

See Also:

Constant Field Values

Constructor Detail

JMXServerJob

public JMXServerJob()

Method Detail

setArooaSession

public void setArooaSession(ArooaSession session)

Specified by:

setArooaSession in interface ArooaSessionAware

getName

public String getName()

Get the name.

Returns:

The name.

setName

public void setName(String name)

Set the name

Parameters:

name - The name.

setRoot

public void setRoot(Object rootNode)

Set the root node directly.

Parameters:

rootNode - The root node for the monitor tree.

getRoot

public Object getRoot()

Get the root node of the monitor tree.

Returns:

The root node.

getAddress

public String getAddress()

setUrl

public void setUrl(String bindAs)

Set the name to bind the root node as in the naming service.

Parameters:

url - The name for the naming service.

getUrl

public String getUrl()

Get the name the root node is bound as in the naming service.

Returns:

The name used in the naming service.

start

public void start()
           throws JMException,
                  MalformedURLException,
                  IOException,
                  ServerLoopBackException

Throws:

JMException

MalformedURLException

IOException

ServerLoopBackException

stop

public void stop()
          throws Exception

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

getLogFormat

public String getLogFormat()

setLogFormat

public void setLogFormat(String logFormat)

getHandlerFactories

public HandlerFactoryProvider getHandlerFactories()

setHandlerFactories

public void setHandlerFactories(HandlerFactoryProvider handlerFactories)

getEnvironment

public Map<String,?> getEnvironment()

setEnvironment

public void setEnvironment(Map<String,?> environment)