Rash v0.1.0 released!

Rash v0.1.0 released!

https://github.com/pando85/rash

Rash是一种受Ansible工具启发的Declarative Shell脚本语言。

• 避免冗长不方便管理的Shell脚本
• 类似Ansible这样的编程风格

Declarative vs imperative： Imperative: entrypoint.sh:

#!/bin/bash
set -e

REQUIRED_PARAMS="
VAULT_URL
VAULT_ROLE_ID
VAULT_SECRET_ID
VAULT_SECRET_PATH
"

for required in $REQUIRED_PARAMS ; do
  [[ -z "${!required}" ]] && echo "$required IS NOT DEFINED" && exit 1
done

echo "[$0] Logging into Vault..."
VAULT_TOKEN=$(curl -s $VAULT_URL/v1/auth/approle/login \
--data '{"role_id": "'$VAULT_ROLE_ID'","secret_id": "'$VAULT_SECRET_ID'"}' \
| jq -r .auth.client_token)

echo "[$0] Getting Samuel API key from Vault..."
export APP1_API_KEY=$(curl -s -H "X-Vault-Token: $VAULT_TOKEN" \
$VAULT_URL/v1/$VAULT_SECRET_PATH | jq -r .data.api_key)


exec "$@"

Declarative: entrypoint.rh:

#!/bin/rash

- name: Verify input parameters
  assert:
    that:
      - VAULT_URL is defined
      - VAULT_ROLE_ID is defined
      - VAULT_SECRET_ID is defined
      - VAULT_SECRET_PATH is defined

- name: launch docker CMD
  command: {{ input.args }}
  transfer_ownership: yes
  env:
    APP1_API_KEY: "{{ lookup('vault', env.VAULT_SECRET_PATH ) }}"

Rocket现在可以通过stable Rust 1.45编译了。

Rocket can be compiled on stable Rust 1.45

https://github.com/SergioBenitez/Rocket/issues/19#issuecomment-630650328

Rocket现在可以通过stable Rust 1.45编译了。

Mun v0.2.0 Released

Mun v0.2.0 Released

https://mun-lang.org/

https://github.com/mun-lang/mun/releases/tag/v0.2.0

Mun是一个通过iteration可以不断创造迭代的嵌入式编程语言。 Mun语言诞生的想法来自找到一个可以规避Lua动态脚本语言的弊端有可以在Rust语言里hot-reload（热加载） 新的编程语言。因此，Mun新语言首先不能是Rust语言的竞争对手，同时有可以在Rust语言（或C/C++）宿主语言 中无缝嵌入编程。Mun完全由Rust语言写成，主要的软件包是rust-analyzer 和rustc 。主要的特点包括：

• Ahead of time compilation
• Statically typed
• First class hot-reloading

新版本更新的功能：

• Hot reloadable data structures
• Marshalling of data structures to Rust, C, and C++
• Garbage collection for data structures (with opt-out at the struct-level)
• loop, while, break and explicitreturn expressions
• Full operator support for numeric and boolean types
• Incremental compilation
• Benchmark support

Actix Casbin 中间件

Actix Casbin Middleware

https://github.com/casbin-rs/actix-casbin-auth

Casbin 是Rust语言网页构架 actix-web framework的访问控制中间件。

安装（install）

在Cargo.toml添加下面的内容：

actix-casbin-auth = "0.2.0"
actix-rt = "1.1.1"
actix-web = "2.0.0"

需求（requirement）

Casbin只负责权限管理，因此需要实现Authentication Middleware来确认用户。 因此需要将带有subject(username)和domain(optional)信息的actix_casbin_auth::CasbinVals加在Extension里。

比如下面的例子：

use std::cell::RefCell;
use std::pin::Pin;
use std::rc::Rc;
use std::task::{Context, Poll};

use actix_service::{Service, Transform};
use actix_web::{dev::ServiceRequest, dev::ServiceResponse, Error, HttpMessage};
use futures::future::{ok, Future, Ready};

use actix_casbin_auth::CasbinVals;


pub struct FakeAuth;

impl<S: 'static, B> Transform<S> for FakeAuth
    where
        S: Service<Request = ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
        S::Future: 'static,
        B: 'static,
{
    type Request = ServiceRequest;
    type Response = ServiceResponse<B>;
    type Error = Error;
    type InitError = ();
    type Transform = FakeAuthMiddleware<S>;
    type Future = Ready<Result<Self::Transform, Self::InitError>>;

    fn new_transform(&self, service: S) -> Self::Future {
        ok(FakeAuthMiddleware {
            service: Rc::new(RefCell::new(service)),
        })
    }
}

pub struct FakeAuthMiddleware<S> {
    service: Rc<RefCell<S>>,
}

impl<S, B> Service for FakeAuthMiddleware<S>
    where
        S: Service<Request = ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
        S::Future: 'static,
        B: 'static,
{
    type Request = ServiceRequest;
    type Response = ServiceResponse<B>;
    type Error = Error;
    type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;

    fn poll_ready(&mut self, cx: &mut Context) -> Poll<Result<(), Self::Error>> {
        self.service.poll_ready(cx)
    }

    fn call(&mut self, req: ServiceRequest) -> Self::Future {
        let mut svc = self.service.clone();

        Box::pin(async move {
            let vals = CasbinVals {
                subject: String::from("alice"),
                domain: None,
            };
            req.extensions_mut().insert(vals);
            svc.call(req).await
        })
    }
}

然后看下面的例子：

use actix_casbin_auth::casbin::function_map::key_match2;
use actix_casbin_auth::casbin::{CoreApi, DefaultModel, FileAdapter, Result};
use actix_casbin_auth::CasbinService;
use actix_web::{web, App, HttpResponse, HttpServer};

#[allow(dead_code)]
mod fake_auth;

#[actix_rt::main]
async fn main() -> Result<()> {
    let m = DefaultModel::from_file("examples/rbac_with_pattern_model.conf").await?;
    let a = FileAdapter::new("examples/rbac_with_pattern_policy.csv");  //You can also use diesel-adapter or sqlx-adapter

    let casbin_middleware = CasbinService::new(m, a).await;

    casbin_middleware
        .write()
        .await
        .add_matching_fn(key_match2)?;

    HttpServer::new(move || {
        App::new()
            .wrap(casbin_middleware.clone())
            .wrap(FakeAuth)          
            .route("/pen/1", web::get().to(|| HttpResponse::Ok()))
            .route("/book/{id}", web::get().to(|| HttpResponse::Ok()))
    })
    .bind("127.0.0.1:8080")?
    .run()
    .await?;

    Ok(())
}

新闻来源：

1. readrust.net
2. reddit.com/r/rust
3. twitter : #rustlang。

-- From 日报小组 BobQin

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