Does Goa support protobufs Timestamp data type?

[RedMarcher]

Protobufs has a timestamp data type, however I'm having a really hard time figuring out if goa api also supports such a thing. I can't find anything similar in the DSL so I'm not sure.

[raphael]

The Meta function makes it possible to use types defined in external proto files, such as Google's timestamp type. See struct:field:proto in the Meta documentation:

var Timestamp = Type("Timestamp", func() {
    Description("Google timestamp compatible design")
    Field(1, "seconds", Int64, "Unix timestamp in seconds", func() {
        Meta("struct:field:proto", "int64") // Goa generates sint64 by default
    })
    Field(2, "nanos", Int32, "Unix timestamp in nanoseconds", func() {
        Meta("struct:field:proto", "int32") // Goa generates sint32 by default
    })
})

var MyType = Type("MyType", func() {
    Field(1, "created_at", Timestamp, func() {
        Meta("struct:field:proto", "google.protobuf.Timestamp", "google/protobuf/timestamp.proto", "Timestamp", "google.golang.org/protobuf/types/known/timestamppb")
    })
})