[katello-devel] Pulpv2 migration, displaying/tracking dependencies important?

[Pradeep Kilambi]

On 09/14/2012 09:18 AM, Todd Sanders wrote:
> On 09/13/2012 06:00 PM, Justin Sherrill wrote:
>>
>>
>> Pulpv2's depedency solving is much better and automatic than what we 
>> had in pulpv1.  It does not, however, provide a way to easily 
>> pre-calculate what packages were added as dependencies (or determine 
>> that after the fact).
>>
>> Within katello today we pre-calcuate these ourselves (with pulp's 
>> help) and save them.  This allows us to:
>>
>> 1. display them to the user prior to hitting promote
>> 2. have the added dependencies available in the changeset history for 
>> historical purposes.
>>
>> Currently pulpv2 does not provide a way to do either of these. How 
>> important are these two things?
>>
>> I'm thinking that #1 would be difficult to implement as pulpv2 is 
>> now, but I'm not sure about #2 (jdob might be able to chime in). Mike 
>> and I were thinking of simply dropping these two things from katello 
>> but wanted to get wider input.
>>
>> -Justin
>
> Let me chat with Prad/Jay about this.  Being able to present a list of 
> added dependent packages seems like a necessary requirement.  I need 
> to understand more about why this was dropped in v2.
>
> -Todd

You should be able to achieve this in pulp v2 today. Change your 
workflow to the following,

* Invoke the resolve_deps api call 
(/repositories/actions/resolve_dependencies/$) for units you would like 
to get deps . The data structure returned here should be pretty close 
whats in v1. This is the info you would store and display to the user 
prior to promote.

* When you're ready to do the promotion(copy in pulp v2 terms), invoke 
the copy api with resolve_dependencies flag turned off. This is only 
copy the units you pass in and not do any additional dep solving .

Hope this helps,

~ Prad


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