[infinispan-dev] configuration toProperties

[Michal Linhard]

No need for java.util.Properties, the main feature I want is
- Configuration displayable as collection of flat key-value properties
- Hierarchy (e.g. l1 is under clustering) is expressed via extending the 
prefix and dividing by dot '.'

but it would be usefull if the outputformat was easily parceable, using 
common Java SE means
one advantage of not using string as output value and keeping a 
collection like java.util.Properties
that you can easily combine more of the configs (give them different 
prefixes) and sort them in the end

that's what I do in PerfRepo:
config.node01.cache.clustering...
config.node01.global...
config.node01.jgroups...
config.node02.cache.clustering...
...

m.
On 11/19/2013 03:25 PM, Sanne Grinovero wrote:
> I love the idea, especially as it happened to me to try to help
> someone who was running Infinispan configured via other means (like
> the AS7 configuration format), and it's always hard to understand how
> it's actually configured without knowing all the implicit default
> values, on a specific version (as defaults evolve too).
>
> But do you really need an output in the form of java.util.Properties ?
> Wouldn't a descriptive string not be more suited? The API could be the
> well known toString() method on the configuration; we'd enforce the
> internal components to fullfill some internal contract like
> "appendTo(StringBuilder sb);" to make sure it's always maintained
> correctly.
> Also, I'd add an option which logs the fully defined configuration on
> cache start at INFO or DEBUG level.
>
> Sanne
>
> On 19 November 2013 13:47, Michal Linhard <mlinhard at redhat.com> wrote:
>> please refer to the branch, I've rewritten the original config:
>> https://github.com/mlinhard/infinispan/tree/t_flatconfig
>>
>> On 11/19/2013 02:45 PM, Michal Linhard wrote:
>>> Hi,
>>>
>>> This is a configuration output format feature proposal.
>>>
>>> I'd like to be able to flatten the infinispan cache configuration to
>>> flat properties style so that two configurations can be easily comparable
>>> in a view that displays sorted matching properties side by side to
>>> quickly spot differences.
>>>
>>> This is useful in our internal PerfRepo app where I do it so far by
>>> reflection, by patching the server or a radargun plugin by special
>>> addon, but this can lead to numerous errors. It would be much simpler
>>> and less error-prone process if we had it integrated in the upstream code.
>>>
>>> I proposed adding a method configuration.toProperties() that flattens
>>> properties of a configuration object
>>> (org.infinispan.configuration*Configuration) and produces
>>> java.util.Properties. The nested configuration objects under the main
>>> Configuration would recursively add their properties under an extended
>>> property prefix.
>>>
>>> I also added a possibility to specify --format=properties in the info
>>> command of the CLI so that the server responds with the property style
>>> configuration of the specific cache...
>>>
>>> https://github.com/mlinhard/infinispan/commit/d8360f7850b67956adfa29aca86dae9dfad5c22d
>>>
>>> (I didn't implement toProperties in all objects, cause it's quite a lot
>>> of changes that would be made in vain in case you don't like this
>>> approach, the commit just demonstrates how I'd like to go about it.)
>>>
>>> These properties would also be exposed via JMX as (example values)
>>> jboss.infinispan:type=Cache,name="testCache(dist_sync)",manager="default",component=Cache
>>> attribute "configurationProperties"
>>> jboss.infinispan:type=CacheManager,name="default",component=CacheManager
>>> attribute "globalConfigurationProperties"
>>> that could be converted by any JMX client back to java.util.Properties
>>>
>>> WDYT?
>>>
>>> m.
>>>
>>
>> --
>> Michal Linhard
>> Quality Assurance Engineer
>> JBoss Datagrid
>>
>> Red Hat Czech s.r.o.
>> Purkynova 99 612 45 Brno, Czech Republic
>> phone: +420 532 294 320 ext. 8262320
>> mobile: +420 728 626 363
>>
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-- 
Michal Linhard
Quality Assurance Engineer
JBoss Datagrid

Red Hat Czech s.r.o.
Purkynova 99 612 45 Brno, Czech Republic
phone: +420 532 294 320 ext. 8262320
mobile: +420 728 626 363