Hmmm. Back to the core problem. I am not certain I have the root.
Case in point:
caffe.proto:
https://github.com/BVLC/caffe/blob/master/src/caffe/proto/caffe.proto
I'm gradually thinking the root of this file is "NetParameter", but I'm not
sure how I was supposed to know that. :-P
I still think there should be a tool that can do (protobuf, .proto) <->
JSON.
On Sunday, December 10, 2017 at 8:45:13 AM UTC-8, Marc Gravell wrote:
>
> oh, there is a root. if i had to guess it has something like:
>
>
> message TheRootMessageType {
> required string name = 1;
> repeated SomeNoun items = 100;
> }
>
>
>
> On 10 Dec 2017 4:42 p.m., "Jim Baldwin" <[email protected] <javascript:>>
> wrote:
>
>> In this case, it looks like there isn’t a root. Rather, this format is a
>> series of top-level parameters. So, I have to give it the Parameter I’m
>> looking for. The problem I have with this is the order of parameters
>> _might_ matter, and I lose that by only looking for one.
>>
>> On Dec 10, 2017, at 8:35 AM, Marc Gravell <[email protected]
>> <javascript:>> wrote:
>>
>> as I ubderstand it, --decode *will do that*. it doesn't decode *just* the
>> root : but, it needs to know the root message type in order to correctly
>> interpret the data
>>
>> On 10 Dec 2017 4:32 p.m., "Jim Baldwin" <[email protected] <javascript:>>
>> wrote:
>>
>>> OK, this helps. I need to figure out what the "root" message is. It
>>> seems like an omission in the whole PB thing that you can't specify the
>>> .proto and do a --decode_everything.
>>>
>>> On Sunday, December 10, 2017 at 8:23:12 AM UTC-8, Marc Gravell wrote:
>>>>
>>>> You can and it does. The problem is that the wire format by itself
>>>> doesn't tell it **what message type** the root object is. So you need to
>>>> tell it in the additional parameter to --decode
>>>>
>>>> On 10 Dec 2017 3:14 p.m., "Jim Baldwin" <[email protected]> wrote:
>>>>
>>>> It's not really just a sequence; it's a hierarchy, isn't it? Why can't
>>>> I use --decode <root> or something like that?
>>>>
>>>>
>>>> On Saturday, December 9, 2017 at 4:20:15 PM UTC-8, Ilia Mirkin wrote:
>>>>
>>>>> On Sat, Dec 9, 2017 at 5:52 PM, Jim Baldwin <[email protected]> wrote:
>>>>> > I have a protobuf file, and a .proto file that describes the schema.
>>>>>
>>>>> >
>>>>> > The .proto describes dozens of different messages that may be in the
>>>>>
>>>>> > protobuf file.
>>>>> >
>>>>> > I would like to know what messages can be found in the file. I do a
>>>>> protoc
>>>>> > --decode_raw and get something out, but I don't see how to use that
>>>>> to
>>>>> > figure out how to extract messages from the file.
>>>>> >
>>>>> > I assume there's something I don't get about protobufs, but it seems
>>>>> to me I
>>>>> > should be able to take a protobuf data file and corresponding .proto
>>>>> and
>>>>> > turn it into a file that lets me see what the message hierarchy is
>>>>> in the
>>>>> > file. JSON would be a great way to do that.
>>>>> >
>>>>> > What am I missing?
>>>>>
>>>>> An encoded protobuf is just a sequence of (tag, value) pairs. If you
>>>>> don't know which proto it is, decode_raw is the best you can do. If
>>>>> you do know which proto it is, you can use --decode instead and pass
>>>>> it a proto name to use for the decoding.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> -ilia
>>>>>
>>>>
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>>>>
>>>>
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>>
>>
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