Marina Vatkina wrote:
> Jennifer Chou wrote:
>> Marina Vatkina wrote:
>>
>>> Jennifer Chou wrote:
>>>
>>>> Marina Vatkina wrote:
>>>>
>>>>> Monitoring team,
>>>>>
>>>>> I'm working on enabling ejb monitoring, which (besides call flow
>>>>> data) is tracked on per bean or bean method, and in v2 terms was
>>>>> the sub-tree of server.applications, added to is via a special
>>>>> registry.
>>>>>
>>>>> Q1. How do I do it in V3?
>>>>>
>>>>> Q1a. Which names would I use?
>>>>
>>>>
>>>> The names for what? Can you give an example?
>>>
>>>
>>> PluginPoint.XXX.
>>>
>>> There is (I think) some generic code in v2 that inserted
>>> "bean-methods" (in other monitoring items there are other strings)
>>> between the <app-name>.<module-name>.<bean-name> and the stringified
>>> method signature:
>>>
>>> server.applications.ejb-flush-testApp.ejb-flush-test-ejb\.jar.A2.bean-methods.create-java\.lang\.String.dotted-name
>>>
>>
>> So it would be like..
>> PluginPoint = PluginPoint.APPLICATIONS
>
> What is the difference btw SERVER and APPLICATIONS?
SERVER should just be the top-level 'server'
APPLICATIONS should be 'server.applications'
>
>
>> subTreeNode = appName + "/" moduleName + "/" + beanName +
>> "/bean-methods/" + methodSignature
>>
>> So we can use the same v2 code to generate the dotted name so it's
>> the same as v2.
>
> Which code converted method into the methodSignature? Do we have it in
> v3?
I don't know myself. Can you check with Prashanth and see if he know
somebody familiar with that code?
>
>>
>>>>
>>>>>
>>>>> Q2. CallFlowInfo - this type was used in v2 to pass around the
>>>>> data. Do I replace it with all its elements or is there a plan to
>>>>> move it to gmbal, so that it becomes a type that can be used
>>>>> outside GF source tree?
>>>>
>>>>
>>>> For this CallFlowInfo type, you need to implement ||
>>>> |org.glassfish.external.statistics.Statistic, and optionally
>>>> ||org.glassfish.external.statistics.Stats.|
>>>
>>>
>>> CallFlowInfo is (was?) a generic monitoring interface:
>>> ./common/common-util/src/main/java/com/sun/enterprise/admin/monitor/callflow/CallFlowInfo.java
>>>
>>>
>>>>
>>>> Please see Sreeni's write-up,
>>>> http://appserver.sfbay.sun.com/Wiki.jsp?page=Monitorig_stat_usage,
>>>> for help on how to create module specific statistics.
>>>> Here's the link to the API which is also linked from the write-up:
>>>> http://kenai.com/projects/gmbal/sources/gf_common/show/src/org/glassfish/external/statistics
>>>>
>>>>
>>>>>
>>>>> Q3. Can I separate @ManagedAttribute methods from @ProbeListener,
>>>>> so that they are in 2 different classes?
>>>>
>>>>
>>>> yes I believe you should be able to.
>>>
>>>
>>> Will both classes be marked as @ManagedObject?
>>
>> only the one with @ManagedAttribute methods.
>
> Did you try it? I'm getting NPE from 'asadmin get --monitor=true "*"'
> so I can't even check in my code :(
>
> java.lang.NullPointerException
> at
> java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:881)
> at
> org.glassfish.external.statistics.impl.StatisticImpl.getStaticAsMap(StatisticImpl.java:82)
>
> at
> org.glassfish.external.statistics.impl.CountStatisticImpl.getStaticAsMap(CountStatisticImpl.java:75)
>
> at
> com.sun.enterprise.v3.admin.GetCommand.addStatisticInfo(GetCommand.java:216)
>
> at
> com.sun.enterprise.v3.admin.GetCommand.insertNameValuePairs(GetCommand.java:203)
>
> at
> com.sun.enterprise.v3.admin.GetCommand.getMonitorAttributes(GetCommand.java:182)
>
> at
> com.sun.enterprise.v3.admin.GetCommand.execute(GetCommand.java:100)
No I haven't tried this scenario myself. Not sure what is going on here.
You can check-in with the register commented out. I can take a look.
>
>>
>>>
>>> thanks,
>>> -marina
>>>
>>>>
>>>>>
>>>>> Q4. How can I pre-set which @ProbeListener (or Statistic instance)
>>>>> is being monitored on level LOW vs. HIGH?
>>
>> You may want to check with Shalini - they are doing this for jdbc.
>
> ok. thanks.
>
> -marina
>>
>>>>>
>>>>> thank you,
>>>>> -marina
>>>>>
>>>>>
>>>>>
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>>>>
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>>
>>
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