【Rust日报】 2019-07-07

神器 flamer

flamer 是这样一个魔法东西，它可以方便地计算出你代码块的耗时。

基本方法，就是在你的代码/函数头和尾（自动）插入计时代码，最后汇总出一个耗时（报告）。用到了 nightly 的自定义属性，所以暂时只能以 nightly 版运行。看下例子：

extern crate flame;

use std::fs::File;

pub fn main() {
    // Manual `start` and `end`
    flame::start("read file");
    let x = read_a_file();
    flame::end("read file");

    // Time the execution of a closure.  (the result of the closure is returned)
    let y = flame::span_of("database query", || query_database());

    // Time the execution of a block by creating a guard.
    let z = {
        let _guard = flame::start_guard("cpu-heavy calculation");
        cpu_heavy_operations_1();
        // Notes can be used to annotate a particular instant in time.
        flame::note("something interesting happened", None);
        cpu_heavy_operations_2()
    };

    // Dump the report to disk
    flame::dump_html(&mut File::create("flame-graph.html").unwrap()).unwrap();

    // Or read and process the data yourself!
    let spans = flame::spans();

    println!("{} {} {}", x, y, z);
}


------------------------

extern crate flame;
#[macro_use] extern crate flamer;

#[flame]
// The item to apply `flame` to goes here.

Repo

snoopy - 一个可高度配置化的多线程网络包嗅探分析工具

Rust 作这类工具太适合不过了。

➜ sudo snoopy capture run                                          
--------------------
Sniffing  wlp3s0
-------------------- 


Source IP              | Source Port  | Dest IP                | Dest Port    | Protocol     | Length       | Timestamp            |
------------------------------------------------------------------------------------------------------------------------------------
52.216.185.195         | 443          | 10.20.197.103          | 38522        | Tcp          | 10078        | 1562310108.589373                  
10.20.197.103          | 38522        | 52.216.185.195         | 443          | Tcp          | 54           | 1562310108.589468                  
52.216.185.195         | 443          | 10.20.197.103          | 38522        | Tcp          | 10078        | 1562310108.890490                  
10.20.197.103          | 38522        | 52.216.185.195         | 443          | Tcp          | 54           | 1562310108.890547                  
52.216.185.195         | 443          | 10.20.197.103          | 38522        | Tcp          | 1486         | 1562310109.197739                  
10.20.197.103          | 38522        | 52.216.185.195         | 443          | Tcp          | 54           | 1562310109.197795                  
52.216.185.195         | 443          | 10.20.197.103          | 38522        | Tcp          | 1486         | 1562310109.197841                  
10.20.197.103          | 38522        | 52.216.185.195         | 443          | Tcp          | 66           | 1562310109.197865                  
52.216.185.195         | 443          | 10.20.197.103          | 38522        | Tcp          | 2918         | 1562310109.197887                  
10.20.197.103          | 38522        | 52.216.185.195         | 443          | Tcp          | 74           | 1562310109.197906                  
52.216.185.195         | 443          | 10.20.197.103          | 38522        | Tcp          | 1486         | 1562310109.197965                  
10.20.197.103          | 38522        | 52.216.185.195         | 443          | Tcp          | 74           | 1562310109.197984                  
35.154.102.71          | 443          | 10.20.197.103          | 56572        | Tls          | 160          | 1562310109.262324                  
10.20.197.103          | 56572        | 35.154.102.71          | 443          | Tcp          | 66           | 1562310109.262383                  

Repo

yarte - 号称最快的模板渲染引擎

采用 handlebars 语法。作者说它是 Rust 界最快的模板渲染引擎。

Repo

ferrocarril - 把 Ruby on Rails 嵌入 Rust 服务（容器）中运行的尝试

这个项目很有意思。想法很新颖。

Repo

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