Thank you, problem solved !!
On Thu, Oct 26, 2017 at 9:57 PM, Josh Humphries <[email protected]>
wrote:
> It works fine when I run it.
>
> > *go test -v .*
> === RUN TestABCMessage
> opt1:123 opt2:"baz"
> --- PASS: TestABCMessage (0.00s)
> PASS
> ok test 0.007s
>
>
>
> However, your test file was incomplete. Maybe you have imported the wrong
> stuff? Double-check that you are linking against the latest version of the
> github.com/golang/protobuf packages.
> I had to add imports, and I also changed the handling of the output since
> I don't know what "spew" is:
>
>
>
> package cmd
>
> import (
> "fmt"
> "testing"
>
> "github.com/golang/protobuf/descriptor"
> "github.com/golang/protobuf/proto"
> )
>
> func TestABCMessage(t *testing.T) {
> var msg Bar
>
> _, md := descriptor.ForMessage(&msg)
>
> opts := md.Field[0].GetOptions()
> foo, err := proto.GetExtension(opts, E_FooOptions)
> if err != nil {
> t.Errorf("failed: %v", err)
> } else {
> fmt.Println(foo)
> }
> }
>
>
>
> ----
> *Josh Humphries*
> [email protected]
>
> On Wed, Oct 25, 2017 at 10:54 PM, <[email protected]> wrote:
>
>> /tmp/TestABCMessage_in_version_abc_test_gogo -test.v -test.run
>> ^TestABCMessage$
>> (*errors.errorString)(0xc420214af0)(proto: not an extendable proto)
>> (interface {}) <nil>
>>
>> On Wednesday, October 25, 2017 at 8:38:51 PM UTC+8, [email protected]
>> 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 ?
>>>
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>>
>
>
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