Re: [protobuf] Forcing JSON encoding to include default values (Java?)

[Rich]

Where is JsonFormat defined?

No reference to how to print JSON from Java in the docs. Nothing in the API 
index.




On Sunday, November 1, 2015 at 2:46:16 PM UTC-5, Feng Xiao wrote:
>
>
>
> On Sun, Nov 1, 2015 at 12:32 AM, Marco  
> wrote:
>
>> The documentation mentions "An implementation may provide options to emit 
>> fields with default values in the JSON-encoded output." 
>>
>> I assumed that meant an implementation of Printer class, ie. an 
>> alternative to  JsonFormat.printer().print(myMessage), but it appears 
>> that any implementation would depend on GeneratedMessage::getAllFields() 
>> which does not include default fields (GeneratedMessage:2123). I also 
>> read through descriptor.proto to see if there was an option for this, but 
>> that did not appear to be the case.
>>
>> Is there a way to do this out of the box, or would it require code 
>> changes? And would this be different for other languages? (This is using 
>> proto3, if that's not implied by the above.)
>>
> The option is not added yet. It will be something like:
> JsonFormat.printer().printingDefaultValueFields().print(myMessage);
>
> Likely it will be included in the next beta release.
>
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>
>

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[protobuf] Timestamps

[Rich]

The Proto3 docs reference a "Timestamp" type in JSON Mappings

https://developers.google.com/protocol-buffers/docs/proto3#json

But no other reference is made to this. Are timestamps supported as a first 
class type in Version 3?

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[protobuf] When will protobuf v3.0.0 support node.js?

[Rich C]

Any idea when protobuf v3.0.0 will have node.js code generation?

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[protobuf] PIP install broken on 2.6.0 (out of date python-dateutil 1.5 dependency)

[Rich]

PIP install fails since 2.6.0 (released 8/25/14)

pip install protobuf
Traceback (most recent call last):
  File string, line 17, in module
  File 
/Users/burdon/projects/src/alienlaboratories/core/tools/python/build/protobuf/setup.py
, line 199, in module

...

pkg_resources.VersionConflict: (python-dateutil 2.2 (/Users/burdon/projects/
src/alienlaboratories/core/tools/python/lib/python2.7/site-packages), 
Requirement.parse('python-dateutil=1.4,2'))


But the default public index for python-dateutil is 2.2 
(https://pypi.python.org/pypi/python-dateutil)

The workaround is to downgrade to 1.5 (pip install -U python-dateutil==1.5)

But this wasn't necessary for 2.5.0

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Re: [protobuf] decode messages that are in protocol buffer format

[Aaron Rich]

I would highly recommend looking at this:
http://code.google.com/p/protobuf-wireshark/

Might get you want you need.

-Aaron

On Tue, Oct 18, 2011 at 11:02 AM, Marc Gravell marc.grav...@gmail.com wrote:
 Well, firstly protobuf is not a text format, so UTF-8 is not the way to 
 start. What is it you need? Note that the protobuf format is ambiguous unless 
 you already know the schema (the same data can be interpreted in different 
 ways). However, if you read the encoding spec, you should be able to guess 
 many cases.

 Marc

 On 18 Oct 2011, at 11:03, newbie choudhury.ana...@gmail.com wrote:

 Hi,

 I am developing a sniffer that will sniff messages moving between a
 message broker and DWH. The messages are written in protocol buffers
 serialization format. So the message body that I sniff is a byte
 string.

 How do I decode this message to human readable format?

 The sniffer is developed in c# .net .

 I tried using System.Text.Encoding.UTF8.GetString(body) , but extra
 character gets added maybe because UTF8 doesn't identify this format.


 Thanks.

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[protobuf] adding submessages to higher message

[Aaron Rich]

New to protoco buffers so sorry if this is a simple/stupid question.

I have a proto:
message WrapperMessage
{
enum Type {
PING   = 1;
PONG   = 2;
}

message Header{
required Type   type = 1;
required string source = 2;
required int64  time = 3;
}

required TIMIHeader header = 1;
repeated Ping ping= 2;
repeated Pong pong= 3;
extensions 500 to max;
}

message Pong
{
  optional int32 count =1;
  optional string message = 2;
}

message Ping
{
  optional int32 count =1;
  optional string message = 2;
}


I need the wrapper so that I can send multiple other message types
over a single udp datastream. I was going to make a message factory to
generate the Ping and Pong messages:
Pong* pong = myFactory-createPong(Hello);

How can I add this Pong message now to a wrapper? I want to be able to
use the factory so I can generate several Pong messages at once to
pack together in a single WrapperMessage before sending. I only see
that calling:
WrapperMessage.add_pong()

will give me a Pong* back. But then I either have to merge that will
my factory message or pass it to factory to populate.

Any suggestions of better way to do this (or improve my proto design)?

Thanks.

-Aaron

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[protobuf] Re: adding submessages to higher message

[Aaron Rich]

I found the method:
AddAllocated(Element*)

which I think will add the Pong* that I have already created/allocated myself.

Any input if there is a better method then this to use would be appreciated.

Thanks.

-Aaron

On Wed, Apr 20, 2011 at 4:25 PM, Aaron Rich aaron.r...@gmail.com wrote:
 New to protoco buffers so sorry if this is a simple/stupid question.

 I have a proto:
 message WrapperMessage
 {
    enum Type {
        PING   = 1;
        PONG   = 2;
    }

    message Header{
        required Type   type = 1;
        required string source = 2;
        required int64  time = 3;
    }

    required TIMIHeader header = 1;
    repeated Ping ping= 2;
    repeated Pong pong= 3;
    extensions 500 to max;
 }

 message Pong
 {
  optional int32 count =1;
  optional string message = 2;
 }

 message Ping
 {
  optional int32 count =1;
  optional string message = 2;
 }


 I need the wrapper so that I can send multiple other message types
 over a single udp datastream. I was going to make a message factory to
 generate the Ping and Pong messages:
 Pong* pong = myFactory-createPong(Hello);

 How can I add this Pong message now to a wrapper? I want to be able to
 use the factory so I can generate several Pong messages at once to
 pack together in a single WrapperMessage before sending. I only see
 that calling:
 WrapperMessage.add_pong()

 will give me a Pong* back. But then I either have to merge that will
 my factory message or pass it to factory to populate.

 Any suggestions of better way to do this (or improve my proto design)?

 Thanks.

 -Aaron


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[protobuf] required field in extend

[Aaron Rich]

Newbie question:

Can an extended message have a required field? For example, If I
wanted to make any application using detailperson.proto's definition
of a person have to have a middle name?

person.proto:
message person
{
  required string first_name =1;
  required string last_name =2;

  extensions 100 to 199;
}
-
detailedperson.proto:
extend person
{
  required string middle_name = 100;
}

Thanks.

-Aaron

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[protobuf] Failing java tests

[Rich]

I can build and install from the latest version, but both the C and
Java tests fail (on OS/X):

 make check

mv: rename src/.deps/gtest.Tpo to src/.deps/gtest.Plo: No such file or
directory
make[3]: *** [src/gtest.lo] Error 1

 mvn test

Tests in error:
  testDynamicMessageAccessors(com.google.protobuf.DynamicMessageTest)
 
testDynamicMessageExtensionAccessors(com.google.protobuf.DynamicMessageTest)
 
testDynamicMessageRepeatedSetters(com.google.protobuf.DynamicMessageTest)
  testDynamicMessageDefaults(com.google.protobuf.DynamicMessageTest)
 
testDynamicMessageSerialization(com.google.protobuf.DynamicMessageTest)
  testDynamicMessageParsing(com.google.protobuf.DynamicMessageTest)
 
testDynamicMessagePackedParsing(com.google.protobuf.DynamicMessageTest)
  testDynamicMessageCopy(com.google.protobuf.DynamicMessageTest)
  testToBuilder(com.google.protobuf.DynamicMessageTest)
  testParseKnownAndUnknown(com.google.protobuf.UnknownFieldSetTest)

Tests run: 252, Failures: 0, Errors: 10, Skipped: 0

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[protobuf] In python - How would I send and receive a PB in the POST payload of http request?

[Rich]

I'm fairly new to python and very new to protocol buffers.  Any points
in the right direction would be helpful.

thx
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