[JBoss-user] [Management, JMX/JBoss] - Re: MBeans dependence on Service lifecycle state?
Thank you for your feedback and help. The last quote was especially helpful. I will reevaluate my needs and assess my next steps. I know that many people see "service" in many different lights -- just following Avalon gives some insight. I'm just curious as to how SOA with SOP used at the end points will really be able to thrive without a cohesive standard for "service" in this context. This is a question that will plague us for some time to come. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845393#3845393 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845393 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Re: MBeans dependence on Service lifecycle state?
Dimitris, I appreciate your responses but you appear to be approaching all of my questions from the standpoint of a developer. Development is one very small piece of the puzzle. The much larger pieces are deployment and maintenance, specifically remote (via MBeans) deployment and maintenance. The whole point in my enquiring about the paradigm whereby MBean attributes and operations interact with the service state is to determine how the MBeans contract is expressed and communicated. You've essentially said: you can code the service do what whatever you want via MBeans and some things are harder than others. Fine but that's a development concern. Picture this: you're an administrator or a remote client and you sit down in front of your management console in which there are dozens of services each with attributes and operations. How do you know which bean uses which technique? Which attributes can be called when the service is running? Which can be called when the service is running and requires the service to be restarted? Which have to have the service stopped and restarted? How do I know if the service is stopped (yes, "StateString" identifies if the service is started, but how do I know if it's still running?)? Is the contract expressed solely through the limited MBean method descriptions? Are there known paradigms for throwing various exceptions based on state (say, by throwing IllegalStateException if an attribute can only be set if the service is stopped -- and I know that IllegalStateException can be thrown but I'm asking for the paradigm)? Now put all of this into perspective of my other question: Restart a FAILED service? And your response: by altering manually its deployment descriptor, saving, then the deployment scanner takes notice of this and re-deploys the MBean. I'm betting on the fact that there is no effective way of communicating the contract so my next thought is: so what happens when they get it wrong (i.e. a service fails). You're telling me that my MBean administrators are dead in the water. I hope that I'm better communicating my questions and concerns and I hope that I'm not causing friction in any way as it is not intended. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845312#3845312 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845312 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Not start Service on server start?
Is there a way to have a Service created but not started on server startup? I am trying to use JBoss' Services in SOP and there are cases where services should be deployed (and created) but not started. My research shows that this is not possible but I wanted a confirmation. If not possible, it is the correct procedure to file an RFE 'bug' for a desired feature? (And yes, I do understand the implications on dependent services.) Thanks! View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845346#3845346 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845346 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Service lifecycle and populating mbean attributes
In my persuit of understanding the service lifecycle, I have stumbled on the following: Figure 2-18 in "CHAPTER 2 The JBoss JMX Microkernel" (admin-devel) shows that the configurator populates the mbean attributes (from the XXX-service.xml file) -before- the mbean is create()'d. My questions are: | If attributes are populated -before- create(), what possible benefit is there in even having create() (over, say, start() (except that start() may be called multiple times))? | | Why are the attributes added before creation? Is there a dependency reason? | | Has any thought been given to adding an attribute to the tag so that the attributes can be added after creation? | | | | Having the attributes set before create() is forcing me to move initialization to the constructor. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845234#3845234 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845234 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Re: Restart a FAILED service?
I was just thumbing through JSR77 to see what's the latest word on the FSM for a managed object and JSR 77.5.1.1.1 states: FAILED (4) | This state indicates that the StateManageable Object has unexpectedly | stopped. On entering this state an SMO must generate an event whose type value is Âj2ee.state.failedÂ. Event notification of the FAILED state is required by all managed objects that implement StateManageable. It may be possible to start an SMO that has entered the FAILED state by calling the start() operation. It may be possible to stop an SMO that has entered the FAILED state by calling the stop() operation. An SMO that cannot succesfully reach the RUNNING or STOPPED state from the FAILED state must reenter the FAILED state after the the attempt to reach the RUNNING or STOPPED state fails and emit another Âj2ee.state.failed event. An SMO that cannot succesfully reach the RUNNING or STOPPED state from the FAILED state requires intervention, such as redeployment, to restore the managed object to the desired state. | | So it seems that ServiceController does not meet the JSR77 requirements (since it's not possible to go from FAILED to STOPPED or RUNNING in any way) -- at least by my interpretation of JSR77. | | Note that I'm not assuming that ServiceController -should- meet JSR77, I'm simply saying that it does not. | | Any feedback is appreciated. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845232#3845232 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845232 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Re: Restart a FAILED service?
Ah ha! I found the root cause: ServiceController.start() : 340 And a similar "problem" in: ServiceController.stop() : 426 So the question still stands: is it desired that a failed service cannot be restarted? And if so, why? I can certainly see where, on initial startup, that you don't want a failed service to continually be re-start()'d while the dependecies are unwound. But after this, shouldn't a restart be allowed? This would allow a defective service to be repaired and restarted. Given ServiceController.start() (minus the offending check for FAILED), a restarted service will then finish starting any dependent services. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845230#3845230 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845230 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Restart a FAILED service?
I am attempting to understand the bounds of the Service lifecycle. I have a Service that throws on startService() (no other service depends on it). When I attempt to restart the service (via the JMX web console), I get no feed back; the service is neither started nor is any error logged. If I execute the "jbossInternalLifecycle()" method with a parameter of "start" (again, via the JMX console) the service is started. Some fast and dirty debugging shows that start() is called (in ServiceMBeanSupport) which calls server.invoke(...). In here things get fuzzy as I am not familiar with the Invocation process. The bottom line is that jbossInternalStart() is never called. Is this expected behavior? And if so, what is the motivation behind it? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845226#3845226 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845226 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Management, JMX/JBoss] - Re: MBeans dependence on Service lifecycle state?
Somehow, even though I logged out and logged in as myself (rgrzywinski) a previous user was maintained. Anywho, I posted the above message (sorry about the formatting there). I didn't want any confusion. So much for using someone elses machine with this forum. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845050#3845050 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845050 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
