【Rust日报】2020-05-24 Rash, Rocket, Mun, Casbin
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/bashset -e
REQUIRED_PARAMS="VAULT_URLVAULT_ROLE_IDVAULT_SECRET_IDVAULT_SECRET_PATH"
for required in $REQUIRED_PARAMS ; do [[ -z "${!required}" ]] && echo "$required IS NOT DEFINED" && exit 1done
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 Transform for FakeAuth where S: Service, Error = Error>, S::Future: 'static, B: 'static,{ type Request = ServiceRequest; type Response = ServiceResponse; type Error = Error; type InitError = (); type Transform = FakeAuthMiddleware; type Future = Ready>;
fn new_transform(&self, service: S) -> Self::Future { ok(FakeAuthMiddleware { service: Rc::new(RefCell::new(service)), }) }}
pub struct FakeAuthMiddleware { service: Rc>,}
impl Service for FakeAuthMiddleware where S: Service, Error = Error> + 'static, S::Future: 'static, B: 'static,{ type Request = ServiceRequest; type Response = ServiceResponse; type Error = Error; type Future = Pin>>>;
fn poll_ready(&mut self, cx: &mut Context) -> Poll> { 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(())}
--
From 日报小组 BobQin
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