I have a protobuf message in service.proto
message DataUpdate {
uint32 source = 1;
uint32 destination = 2;
}
message DataUpdateRequest
{
string filepath = 1;
repeated DataUpdate updates = 2;
}
and I used protoc to get the js file for the above protobuf file and I assigned the values as follows in typescript file
function exec() {
const servicePb = require('service_pb');
const req = new servicePb.DataUpdateRequest();
req.setFilepath('C:/Users/santhosh/test.txt');
req.setUpdatesList([{
source: 1,
destination: 2,
}]); // <- this line is throwing an error
// sending req.serializeBinary() as data to endpoint
}
The error on setUpdatesList is:
TypeError: c[e].toArray is not a function
at Function.push.../../node_modules/google-protobuf/google-protobuf.js.jspb.Message.setRepeatedWrapperField (google-protobuf.js:511:1)
How should I assign value to this type of message?
I tried from postman with the following json body (and Content-Type: application/json) and it worked
{
"filepath": "C:/Users/santhosh/test.txt",
"updates": [
{
"destination": 2,
"source": 1
}
]
}
How should I assign value to repeated field updatesList in typescript?
I figured out the solution. We need to use the setter of DataUpdate itself. So something like following would work.
function exec() {
const servicePb = require('service_pb');
const req = new servicePb.DataUpdateRequest();
req.setFilepath('C:/Users/santhosh/test.txt');
// here is the change we need to make
const dataUpdate = new servicePb.DataUpdate();
dataUpdate.setSource(1);
dataUpdate.setDestination(2);
req.setUpdatesList([dataUpdate]); // or req.addUpdates(dataUpdate) will also work
// sending req.serializeBinary() as data to endpoint
}