[jira] [Comment Edited] (THRIFT-5708) Support reflection capability like protobuf

["Lee Yun (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/THRIFT-5708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17724842#comment-17724842 ] 

Lee Yun edited comment on THRIFT-5708 at 5/22/23 9:19 AM:
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[~fishywang] Thank you for your reply. The main benefit of protobuf reflection, in my opinion, is the ability to access some IDL descriptors and retrieve metadata. I would like to have similar capabilities in thrift, for example, defining a series of descriptors such as StructDescriptor, FieldDescriptor, and EnumDescriptor in thrift IDL, so that the generated structure by thrift can retrieve these descriptors and access some IDL information, such as annotations.

Moreover, with these descriptors, we could combine them with Golang's native reflect API to create some convenient encapsulation and combination for reflection calls in Golang. This doesn't require any modification to the Golang's reflection library.


was (Author: JIRAUSER300251):
[~fishywang] Thank you for your reply. The main benefit of protobuf reflection, in my opinion, is the ability to access some IDL descriptors and retrieve metadata. I would like to have similar capabilities in thrift, for example, defining a series of descriptors such as StructDescriptor, FieldDescriptor, and EnumDescriptor in thrift IDL, so that the generated structure by thrift can retrieve these descriptors and access some IDL information, such as annotations. Additionally, with these descriptors, we could combine them with Golang's native reflect API to create some convenient encapsulation and combination for reflection calls in Golang.

> Support reflection capability like protobuf
> -------------------------------------------
>
>                 Key: THRIFT-5708
>                 URL: https://issues.apache.org/jira/browse/THRIFT-5708
>             Project: Thrift
>          Issue Type: Wish
>          Components: Go - Library
>            Reporter: Lee Yun
>            Priority: Major
>
> Hello, Thrift team. I noticed that when using Protobuf, it provides reflection capabilities that allow us to access metadata and use reflection in generated code, like this:
> ```
> msg := pbdemo.Request\{Name: "abc"}
> m := msg.ProtoReflect()
> fds := m.Descriptor().Fields()
> fmt.Println("----- newReflect:")
> for k := 0; k < fds.Len(); k++ {
>    fd := fds.Get(k)
>    fmt.Println(fd)
> }
>  
> ```
> I'm wondering if Thrift can also support similar functionality? For example, can Thrift record this metadata in generated code and provide reflection capabilities similar to Protobuf? This would make code development more flexible. Thank you for your attention.



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