How can we convert .proto file and JSON descriptors?

Question

I'd like to convert from .proto file to JSON descriptors.

.proto file is like as this: https://github.com/protobufjs/protobuf.js/blob/master/google/protobuf/type.proto

JSON descriptors is like as this: https://github.com/protobufjs/protobuf.js/blob/master/google/protobuf/type.json

The reason why　I'd like to use protobuf on bigquery udf with using bq-udf-protobuf. https://github.com/salrashid123/bq-udf-protobuf So, I think I need to prepare sentences like as JSON descriptors for my SQL.

user_13027422 · Answer

Robocco, you can convert your proto file definition into protobufjs.Root and then use method toJSON() to get JSON descriptor.

Here is a related example from documentation.

const protobufjs = require("protobufjs")

const root = protobufjs.loadSync('test.proto');
// Alternative way without loading proto string from file 
// const root = protobufjs.parse('syntax = "proto3"; ...').root;
console.log(JSON.stringify(root.toJSON(), null, 4));

How can we convert .proto file and JSON descriptors?

1 Answers