火箭-由于未实现特征，我的守卫中的使用状态失败

Question

我想在我的守卫中使用状态。我希望路由需要使用 api 密钥进行身份验证，我想在我的 Rocket.toml 中定义该密钥。但是运行此代码出现以下错误：

特征 From<(Status, ())> 没有为 (Status, ApiKeyError)

实现

对于这行代码let config_state = try_outcome!(req.guard::<State<'_, Config>>().await);

如何实现这个特性？或者是否有更好的解决方案来管理 Rocket 中的 api 令牌。

我正在使用0.5.0-dev版本的 Rocket。

#[macro_use] extern crate rocket;

use rocket::http::Status;
use rocket::request::{Outcome, Request, FromRequest};
use rocket::State;
use rocket::fairing::AdHoc;
use serde::Deserialize;

#[derive(Deserialize)]
struct Config {
    api_key: String,
}

struct ApiKey<'r>(&'r str);

#[derive(Debug)]
enum ApiKeyError {
    Missing,
    Invalid,
}

#[rocket::async_trait]
impl<'r> FromRequest<'r> for ApiKey<'r> {
    type Error = ApiKeyError;

    async fn from_request(req: &'r Request<'_>) -> Outcome<Self, Self::Error> {

        let config_state = try_outcome!(req.guard::<State<'_, Config>>().await);

        /// Returns true if `key` is a valid API key string.
        fn is_valid(key: &str, api_key: String) -> bool {
            key == api_key
        }

        match req.headers().get_one("Authorization") {
            None => Outcome::Failure((Status::Unauthorized, ApiKeyError::Missing)),
            Some(key) if is_valid(key, config_state.api_key) => Outcome::Success(ApiKey(key)),
            Some(_) => Outcome::Failure((Status::Unauthorized, ApiKeyError::Invalid)),
        }
    }
}

#[get("/")]
async fn index(config: State<'_, Config>, key: ApiKey<'_>) -> &'static str {
    "Hello, world!"
}

fn rocket() -> rocket::Rocket {
    let rocket = rocket::ignite();
    let figment = rocket.figment();

    let config: Config = figment.extract().expect("config");

    rocket
    .mount("/", routes![index])
    .attach(AdHoc::config::<Config>())
}

#[rocket::main]
async fn main() {
    rocket()
        .launch()
        .await;
}

Answer 1

我已经使用 AdHoch::config() 存储了配置，但要在 guard 中检索它，我需要使用 request.rocket().state::<Config>()。更正后的源代码如下：

#[macro_use] extern crate rocket;

use rocket::http::Status;
use rocket::request::{Outcome, Request, FromRequest};
use rocket::State;
use rocket::fairing::AdHoc;
use serde::Deserialize;

#[derive(Deserialize)]
struct Config {
    api_key: String,
}

struct ApiKey<'r>(&'r str);

#[derive(Debug)]
enum ApiKeyError {
    Missing,
    Invalid,
}

#[rocket::async_trait]
impl<'r> FromRequest<'r> for ApiKey<'r> {
    type Error = ApiKeyError;

    async fn from_request(req: &'r Request<'_>) -> Outcome<Self, Self::Error> {

        // Retrieve the config state like this
        let config = req.rocket().state::<Config>().unwrap();

        /// Returns true if `key` is a valid API key string.
        fn is_valid(key: &str, api_key: &str) -> bool {
            key == api_key
        }

        match req.headers().get_one("Authorization") {
            None => Outcome::Failure((Status::Unauthorized, ApiKeyError::Missing)),
            Some(key) if is_valid(key, &config.api_key) => Outcome::Success(ApiKey(key)),
            Some(_) => Outcome::Failure((Status::Unauthorized, ApiKeyError::Invalid)),
        }
    }
}

#[get("/")]
async fn index(config: State<'_, Config>, key: ApiKey<'_>) -> &'static str {
    "Hello, world!"
}

fn rocket() -> rocket::Rocket {
    let rocket = rocket::ignite();
    let figment = rocket.figment();

    let config: Config = figment.extract().expect("config");

    rocket
    .mount("/", routes![index])
    .attach(AdHoc::config::<Config>())
}

#[rocket::main]
async fn main() {
    rocket()
        .launch()
        .await;
}

火箭-由于未实现特征，我的守卫中的使用状态失败

Rocket - Use state within my guards fails as traits are not implemented

rust

rust-rocket