On Wed, Oct 25, 2017 at 5:38 AM, <shiyw...@redhat.com> wrote: > the example in https://developers.google.com/protocol-buffers/docs/ > proto#customoptions below > > message FooOptions { > optional int32 opt1 = 1; > optional string opt2 = 2; > } > > extend google.protobuf.FieldOptions { > optional FooOptions foo_options = 1234; > } > > // usage: > message Bar { > optional int32 a = 1 [(foo_options).opt1 = 123, (foo_options).opt2 = "baz"]; > // alternative aggregate syntax (uses TextFormat): > optional int32 b = 2 [(foo_options) = { opt1: 456 opt2: "xaa" }]; > } > > assume I have a message Bar here: > > var msg Bar > _, md := ForMessage(&msg) > md.Field[0].GetOptions().String() only a string, How do i parse that ?? > > How to I get the exact value of Bar.b.opt1 which is 123 (default value) > > What I want is like this > > md.Field[0].GetOptions().GetOpt1() // 123 > md.Field[0].GetOptions().GetOpt2() // baz > md.Field[1].GetOptions().GetOpt1() // 456 > md.Field[1].GetOptions().GetOpt2() // xaa > > Can we achieve that ? > The exact API to access custom options is language specific, It generally uses the same syntax as accessing extensions. For go, you can post the question to https://github.com/golang/protobuf
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