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https://issues.apache.org/jira/browse/WHIRR-245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001873#comment-13001873
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Tom White commented on WHIRR-245:
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I suggest that the user-facing API moves to org.apache.whirr, and the API for 
writing services goes in org.apache.whirr.service and subpackages. This would 
be a breaking change, so we should try to do this sooner rather than later.

More specifically:

* Move the client API (Cluster, ClusterSpec, RolePredicates, Service, 
ServiceFactory) from the org.apache.whirr.service package to the 
org.apache.whirr package.
* Rename Service(Factory) to ClusterController(Factory). Rationale: since 
WHIRR-117 Service has been able to start one or more services on a cluster, so 
it's misnamed now; also it's really about interacting with a cluster, not a 
service.
* Rename org.apache.whirr.cluster.actions to org.apache.whirr.service.actions 
so its associated more closely with the classes in org.apache.whirr.service.
* Move org.apache.whirr.net and org.apache.whirr.ssh to 
org.apache.whirr.service.util to emphasise that these are utility classes for 
services.
* Consider moving classes in org.apache.whirr.service.jclouds to 
org.apache.whirr.service since the distinction isn't clearcut or particularly 
useful for service implementors.

Would org.apache.whirr.service be better named org.apache.whirr.spi to clearly 
indicate it's a Service Provider Interface? I was tending towards 
org.apache.whirr.service since the services (Hadoop, HBase, etc) are all under 
that package.

Thoughts?

> Clearly demarcate the user and service provider APIs
> ----------------------------------------------------
>
>                 Key: WHIRR-245
>                 URL: https://issues.apache.org/jira/browse/WHIRR-245
>             Project: Whirr
>          Issue Type: Improvement
>            Reporter: Tom White
>            Assignee: Tom White
>
> Currently the user API and the API for writing services are mixed up in 
> org.apache.whirr.service. It would be good to package them more clearly. 

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