One way to model this in protobuf is using `oneof`, in which case you don't
even really need the enum:
```proto
syntax = "proto3"
message RunCommand {
string destination = 1;
}
message SleepCommand {
int32 time = 1;
}
message ReadCommand {
string book = 1;
}
message Command {
oneof command_type {
RunCommand run = 1;
SleepCommand sleep = 2;
ReadCommand read = 3;
}
}
```
Gary
On Wednesday, June 8, 2022 at 1:26:41 AM UTC-7 [email protected] wrote:
> Hello:
>
> I'm a Typescript developer and trying to use protobuf between Typescript
> and Python.
>
> I have to translate several Typescripts interface below to proto3 messages:
>
> ```typescript
> enum CommandType {
> 'Run',
> 'Sleep',
> 'Read'
> }
>
> interface RunCommand {
> commandType: CommandType.Run;
> destination: string;
> }
>
> interface SleepCommand {
> commandType: CommandType.Sleep;
> time: number;
> }
>
> interface ReadCommand {
> commandType: CommandType.Read;
> book: string
> }
>
> type Command = RunCommand | SleepCommand | EatCommand;
> ```
>
> Tye type `Command` is a message in my .proto like:
>
> ```proto3
> syntax = "proto3"
>
> enum CommandType {
> RUN = 0;
> SLEEP = 1;
> READ = 2;
> }
>
> message Command {
> CommandType commandType = 0;
> ...
> }
> ```
>
> How can I set the rest properties of the message `Command`?
>
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