encode_message error

[jdf159357]

import blackboxprotobuf

hex_str = "20 0c" senddata = bytes.fromhex(hex_str)

deserialize_data, message_type = blackboxprotobuf.protobuf_to_json(senddata) print(deserialize_data) print(message_type)

deserialize_data = eval(deserialize_data) form_data = bytes(blackboxprotobuf.encode_message(deserialize_data, message_type)) print(form_data)

[jdf159357]

{ "4": "12" } {'4': {'type': 'int', 'name': ''}} it should be int 12, not str "12"，how to solve it by code

[rwinkelmaier-ncc]

Hi!

When I run the code against the latest version I'm getting

{
  "4": 12
}

Could you make sure you are using the bbpb package from pypi and not the blackboxprotobuf package?

Additionally, I would recommend against using eval for parsing the deserialized data. Since it's JSON data, you can do one of the following:

• parse it with json.loads instead of eval
• you can use protobuf_from_json instead of eval + encode_message, it will automatically do the json.loads
• or if you don't need a string representation, you can skip JSON and use decode_message instead of protobuf_to_json.

[jdf159357]

Hi!

When I run the code against the latest version I'm getting

{
  "4": 12
}

Could you make sure you are using the bbpb package from pypi and not the blackboxprotobuf package?

Additionally, I would recommend against using eval for parsing the deserialized data. Since it's JSON data, you can do one of the following:

• parse it with json.loads instead of eval
• you can use protobuf_from_json instead of eval + encode_message, it will automatically do the json.loads
• or if you don't need a string representation, you can skip JSON and use decode_message instead of protobuf_to_json.

Thank you for your reply! I did use the wrong package，Also I have another question

import blackboxprotobuf import json

hex_str = "1a 3b 0a 1b 09 ff e3 b2 c0 82 0a 93 40 11 00 00 50 d7 99 4e 5d 40 19 45 76 80 f3 79 8d 43 40 12 0f 0d 00 00 00 00 15 00 00 00 00 1d 00 00 00 00 1a 06 08 9b 03 10 a8 04 25 00 00 f0 41" senddata = bytes.fromhex(hex_str)

deserialize_data, message_type = blackboxprotobuf.protobuf_to_json(senddata) print(deserialize_data) print(message_type)

deserialize_data = json.loads(deserialize_data) form_data = bytes(blackboxprotobuf.encode_message(deserialize_data, message_type)) print(form_data)

I want decode result "1": { "1": 4653074396698829823, "2": 4637949613910786048, "3": 4630700396782843461 },

to "1": { "1": 1218.6276882125528, "2": 117.22813971340656, "3": 39.10528415463026 },

Can I do it automatically by code, or do I have to change the type manually? int to float

[rwinkelmaier-ncc]

There's a few ways you can do it:

1. If you want all fixed64 fields to decode to a double by default, you can pass a Config object with a default_types to protobuf_to_json:

   from blackboxprotobuf.lib.types import wiretypes
   config = blackboxprotobuf.lib.config.Config()
   config.default_types[wiretypes.FIXED32] = 'float'
   config.default_types[wiretypes.FIXED64] = 'double'
   
   deserialize_data, message_type = blackboxprotobuf.protobuf_to_json(senddata, config=config)

2. If you just want those specific fields to be decoded as a double, then you can define a type definition to pass into protobuf_to_json. Passing the type definition in tells bbpb to use a different decoder for that field instead of the default (you can also rename fields by adding a "name" attribute):

   message_type = {
      "3": {
          "type": "message",
          "message_typedef": {
              "1": {
                  "type": "message",
                  "message_typedef": {
                      "1": {
                          "type": "double"
                          },
                      "2": {
                          "type": "double"
                          },
                      "3": {
                          "type": "double"
                          }
                  }
              }
          }
      }
   }
   deserialize_data, message_type = blackboxprotobuf.protobuf_to_json(senddata, message_type)

   If you're going the typedef route, you can either hand craft the typedefs like above, or save and edit the message_type returned by protobuf_to_json. You can print to json with print(json.dumps(message_type, indent=4), edit the fields you want in a text editor, and then do a message_type = json.loads("...") or load from a file. Then pass the message_type that you created into protobuf_to_json.

[jdf159357]

Thank you very much for your answer！