Dynamic Deployment of IIOP-Enabled Components in the JBoss Server - - PDF document
Dynamic Deployment of IIOP-Enabled Components in the JBoss Server Francisco Reverbel CS Department, University of So Paulo Bill Burke JBoss, Inc. Marc Fleury JBoss, Inc. Francisco Reverbel, Bill
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
A change to a JBoss-specific deployment descriptor is all that is needed to convert a non-IIOP-enabled deployment unit into an IIOP-enabled one
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Java Virtual Machine Agent Level Instrumentation Level Mgmt Client Browser Distributed Services Level Connector Protocol Adapter
Agent Services (as MBeans) Managed Resources (as MBeans)
MBean Server
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Java Virtual Machine
Client
✂✁☎✄✝✆✟✞☎✠ ✂✁☎✄✝✆✟✞☎✠☛✡ ✡✌☞✟✍✏✎ ☞✟✍✏✎✂✠ ✠✟✑✏✒✝✓✏✔ ✑✏✒✝✓✏✔✏✕ ✕✟✠ ✠ ✖✂✗ ✖✂✗☛✘ ✘✌✙✂✚✂✖✝✛ ✙✂✚✂✖✝✛✏✗ ✗✂✜✝✚ ✜✝✚ ✢ ✢ ✣✏✤☛✥ ✣✏✤☛✥✌✦ ✦✝✧✏★ ✧✏★ ✩ ✩✝✪ ✪✂✫☛✬✮✭✂✯ ✫☛✬✮✭✂✯✝✰ ✰✝✩✝✱✂✲✏✭ ✩✝✱✂✲✏✭✏✳ ✳✟✫ ✫ ✴ ✴ ✵✟✶✏✷ ✵✟✶✏✷✂✸ ✸✟✹✏✺✼✻✾✽ ✹✏✺✼✻✾✽ ✿✏❀☛❁✮❀ ✿✏❀☛❁✮❀✏❂ ❂❄❃ ❃ ❅ ❅ ❆✏❇☛❈ ❆✏❇☛❈✌❉ ❉✝❊✏❋✼●✾❍❏■✂❉✏❋✝❊ ❊✏❋✼●✾❍❏■✂❉✏❋✝❊✏❑ ❑✟❇✝▲▼❈✮◆ ❇✝▲▼❈✮◆✝❖ ❖MBean Registry MBean Server MBean
❉✂❊☎P✝◗✟❘☎◆ ❉✂❊☎P✝◗✟❘☎◆☛❙ ❙❚❆✏❇☛❈ ❆✏❇☛❈✌❉ ❉✝❊✏❋ ❊✏❋ ◗ ◗✝❯ ❯✂◆☛❈✮❑✂❇ ◆☛❈✮❑✂❇✝❉ ❉✝◗✝❊✂❱✏❑ ◗✝❊✂❱✏❑✏❲ ❲✟◆ ◆ ❳ ❳ ❨✟❩✏❬ ❨✟❩✏❬✂◆ ◆✟❭✏❇✼●✾❍ ❭✏❇✼●✾❍ ❯✏❑☛❈✮❑ ❯✏❑☛❈✮❑✏❲ ❲❄■ ■ ❳ ❳ ❆✏❇☛❈ ❆✏❇☛❈✌❉ ❉✝❊✏❋✼●✾❍❏■✂❉✏❋✝❊ ❊✏❋✼●✾❍❏■✂❉✏❋✝❊✏❑ ❑✟❇✝▲▼❈✮◆ ❇✝▲▼❈✮◆✝❖ ❖ ❪The client holds no direct Java references to the MBean
❪It does not need to know the MBean’s Java class/interfaces
❪This very simple arrangement favors adaptation
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
A SAR includes a service descriptor, an XML file that conveys information needed at deployment time
✄They are a JBoss
pecific extension to JMX
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Server Virtual Machine
MBean Server
Container MBean Server-Side Interceptors EJB Component Client Virtual Machine Client-Side Interceptors Invocation Handler Dynamic Proxy EJB Client Invoker Proxy EJB Container Invoker MBean Client-Side Proxy
Meta Level Base Level
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Server VM
MBean Server
Container MBean Invoker MBean
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Client Virtual Machine Client-Side Interceptors Invocation Handler Dynamic Proxy EJB Client Invoker Proxy Invoker MBean Client-Side Proxy
Meta Level Base Level
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Client Virtual Machine Client-Side Interceptors Invocation Handler Dynamic Proxy EJB Client Invoker Proxy Invoker MBean Client-Side Proxy
Meta Level Base Level
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Server Virtual Machine
MBean Server
Container MBean EJB Component Client Virtual Machine EJB Container IIOP Invoker MBean
Meta Level Base Level
CORBA Servant POA Server-Side Interceptors EJB Client IIOP Stub Server-Side ORB Client-Side ORB calls to base-level interfaces calls to ORB-specific interfs. IIOP request call to OMG-defined interface flow of reified invocations
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
The “HA” suffix stands for “high availability”
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Server Virtual Machine
MBean Server
Container MBean EJB Component EJB Container IIOP Invoker MBean CORBA Servant POA Server-Side Interceptors Server-Side ORB HTTP Invoker MBean JRMP Invoker MBean ProxyFactory ProxyFactory IORFactory
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
One proxy factory configuration per protocol
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Interceptors instantiated at the server side would not make sense for non
ava clients
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Map from IDL operation names to
✄✆☎✞✝ ✄✟☎✞✝✡✠ ✠✞✝☞☛✞✌✎✍ ✝☞☛✞✌✎✍☞✄ ✄✏☛✒✑✔✓✡☛✟✝✖✕ ☛✒✑✗✓☞☛✟✝✖✕✞✘ ✘ 35
CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
Default: per
ervant POAs created at deployment time
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
It has a method
✘ ✘✚✙ ✙✜✛✣✢ ✛✣✢✥✤ ✤✧✦ ✦ ★✪✩✬✫✮✭✰✯ ★✪✩✬✫✮✭✱✯✜✫ ✫✣✩✪✲✴✳✶✵ ✩✜✲✷✳✶✵✮✸ ✸✺✹✮✲✻✲ ✹✮✲✻✲ ✼✣✽✬✾ ✼✻✽✬✾ ✿ ✿ ❀performs Java introspection on interface
■ ■❑❏ ❏✣❏ ❏ ▲applies the Java to IDL mapping on
■ ■▼❏ ❏✬❏ ❏ ▲uses code generation techniques to create a byte code array with the class file for
◆▼❖✻❖✚P ◆▼❖✣❖✱P✴◗ ◗✺❘✜❙ ❘✪❙✣❚ ❚ ❯keeps this array in a hash map, to be returned by
❱ ❱❳❲❩❨ ❲❩❨✺❬ ❬❪❭ ❭✰❨ ❨❳❲ ❲✰❫ ❫ ❴creates a
❵ ❵✜❛✬❜✮❝ ❛❞❜✮❝✻❝ ❝ instance from the byte code array 37
CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
If it has not been exported through the RMI system, then it will be passed by value (in serialized form)
✂This allows the creation of custom stubs, which interact
represent
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury
(instance pooling, instance caching, persistence, security, transactions...)
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CD 2004 – Edinburgh, UK – May 2004 Francisco Reverbel, Bill Burke, Marc Fleury