f# - 如何在 Suave 用户状态中存储数据？

Question

我有一个处理 OAuth 回调请求的 Web 部件。

从 API 获取访问 token 和用户 ID 后，我想将其存储在 session 状态中。但是在后续请求中读取 session 时，我只看到“Suave.Auth”键的值。

这是我用于 OAuth 回调的 Web 部件:

path "/oauth" >=> context (fun ctx ->
        let req = ctx.request
        match (req.queryParam "code", req.queryParam "error") with
        | Choice1Of2 code, _ ->
            let id = completeOAuth code
            Authentication.authenticated Session false
            >=> Writers.setUserData "user-id" id
            >=> Redirection.redirect "/view"
        | _, Choice1Of2 error -> RequestErrors.UNAUTHORIZED error)

如何确保“user-id”值在此之后的其他请求的 session 中？

Answer 1

Writers.setUserData将数据存储在仅在请求期间存在的 map 中。

要跨请求存储数据，您需要使用 statefulForSession像这样。

let app = 
  statefulForSession >=> context (fun x ->
    match HttpContext.state x with
    | None ->
      // restarted server without keeping the key; set key manually?
      let msg = "Server Key, Cookie Serialiser reset, or Cookie Data Corrupt, "
      + "if you refresh the browser page, you'll have gotten a new cookie."
      OK msg
    | Some store ->
      match store.get "counter" with
      | Some y ->
        store.set "counter" (y + 1) >=> OK (sprintf "Hello %d time(s)" (y + 1))
      | None ->
        store.set "counter" 1 >=> OK "First time")