Working with google.protobuf.Any in newest version

[manni83]

In #677 a wrapper for google.protobuf.Any was added. I wanted to use this because it would be very convenient when working with protobuf.Any, but it did not work. Here is an example based on the unit test comp_google_protobuf_any.js what I would like to do:

    foo = Foo.fromObject({
        foo: {
            "@type": ".Bar",
            bar: "a"
        }
    });

    test.ok(foo.foo instanceof Bar.ctor, "should unwrap wrapped Bar in fromObject");
  
    // Encode and decode again -> foo.foo is not serialized!
    var foo2 = Foo.decode(Foo.encode(foo).finish());
    obj = foo2.toObject(foo2, { json: true });

    // This fails
    test.same(obj.foo, { "@type": ".Bar", bar: "a" }, "this does not work at the moment");

Or is there any other way how I can initialize a message that contains a google.protobuf.Any easily?

[jianfenkezhan]

can anyone provide an example?

[koliyo]

This works for me, but would be really nice if this was wrapped in some generated helper method

protocolbuffers/protobuf#2612 (comment)

Eg, in the python library this is much more automatic, as well as in the golang library.

[xyy94813]

const protobufjs = require('protobufjs');
const path = require('path');

const protoFilePath = path.resolve(__dirname, './my.proto')

protobufjs.load(protoFilePath, function (
  err,
  root,
) {
  if (err) {
    console.error(err);
    throw err;
  }
  const MyMessage = root.lookupType(
    'MyMessage',
  );
  const MyData = root.lookupType(
    'MyData',
  );
  const GoogleAny = root.lookupType('Any');
  
  const myMsg = MyMessage.fromObject({
    data: GoogleAny.toObject(
      MyData.fromObject({ 
        // ...
      })
    )
  })
});