> On Dec. 16, 2016, 8:32 a.m., Jie Yu wrote:
> > include/mesos/oci/spec.proto, line 90
> > <https://reviews.apache.org/r/52349/diff/6/?file=1581544#file1581544line90>
> >
> >     How do we support parsing `annotations`?
> >     
> >     Should we use a different name so we can do manual parsing?
> >     
> >     Also, i'd like to introduce a common `Label` message instead of 
> > `EntryWithStringValue`
> 
> Qian Zhang wrote:
>     > How do we support parsing `annotations`?
>     
>     That's the suggested way to handle `map` in protobuf, see 
> https://developers.google.com/protocol-buffers/docs/proto#maps (the backwards 
> compatible way) for details, I think `annotations` will be automatically 
> parsed in this way.
>     
>     > Also, i'd like to introduce a common `Label` message instead of 
> `EntryWithStringValue`
>     
>     Do you mean we rename `EntryWithStringValue` to `Label` and define it in 
> a common place rather than in this file?
> 
> Jie Yu wrote:
>     Ah, didn't realize that Map is already supported in proto2. We definitely 
> need to add parsing support for that (i.e., json -> protobuf). Not sure how 
> backwards compatibility will be handled. However, if it is used in agent 
> only, it should not be a problem.
> 
> Qian Zhang wrote:
>     The protobuf that we are using (protobuf-2.6.1) does not support `map`, 
> as MPark mentioned in the dev list, we need to upgrade to protobuf 3.0.0 to 
> have `map` support. Do you think we need to do the upgrade right away, or we 
> can use the backwards compatible way mentioned in the above link first in 
> this project and do the upgrade later?

Let's follow the similar way of https://reviews.apache.org/r/47199/ to do the 
manual parsing for now, and in future when we upgrade the protobuf to a newer 
version in Mesos to support `Map`, we can remove that manual parsing logic and 
just use the `Map` keyword.


- Qian


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On Jan. 3, 2017, 9:53 p.m., Qian Zhang wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/52349/
> -----------------------------------------------------------
> 
> (Updated Jan. 3, 2017, 9:53 p.m.)
> 
> 
> Review request for mesos and Jie Yu.
> 
> 
> Bugs: MESOS-6681
>     https://issues.apache.org/jira/browse/MESOS-6681
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Add protobuf messages for OCI image spec.
> 
> 
> Diffs
> -----
> 
>   include/mesos/oci/spec.hpp PRE-CREATION 
>   include/mesos/oci/spec.proto PRE-CREATION 
>   src/Makefile.am 6d0f77be37af9bc4e22199418796d6d0c5b6c462 
> 
> Diff: https://reviews.apache.org/r/52349/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Qian Zhang
> 
>

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