[infinispan-dev] configuration toProperties

[Michal Linhard]

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.
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