Rust at Sentry

Transcript

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   Rust at Sentry Armin @mitsuhiko Ronacher

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   Hi, I'm Armin ... and I do Open Source, lots

   of Python and SaaS Flask Sentry …
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   … and here is where you can find me twitter.com/@mitsuhiko

   github.com/mitsuhiko lucumr.pocoo.org/
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   800°C 36° 2' 0.4662" N 118° 15' 38.7792" W 795°C

   789°C 797°C 793°C 805°C 782°C we show you your crashes
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   None
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   None
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   a bit about us chapter 0

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   Open Source Project “sentry”

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   Cloud Hosted “sentry.io”

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    relatively flexible stack postgres, mysql, cassandra, riak, …

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    our general tech stack chapter 1

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    Lots of Python

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    Simple Stack Python RabbitMQ Postgres Riak Redis

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    Conservative Approach to Adding New Systems

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    prefer Internal Modularity over building More Services

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    how does rust fit?

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    why is there Rust? chapter 2

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    a bit of a hobby of mine

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    turned into sentry-cli (command line client to manage organizations /

    build integration)
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    later reused components for Python modules

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    now part of our tech stack

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    how we started chapter 3

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    why we use Rust for sentry-cli

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    $ otool -L which sentry-cli /usr/local/bin/sentry-cli: /System/Library/Frameworks/Security.framework/Versions/A/Security /usr/lib/libiconv.2.dylib /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation /usr/lib/libcurl.4.dylib

    /usr/lib/libz.1.dylib /usr/lib/libSystem.B.dylib
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    $ curl -sL https://sentry.io/get-cli/ | bash $ npm install sentry-cli-binary

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    that and crates.io

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    rejected alternatives go JavaScript (bundled node) C / C++ Python

    / Ruby
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    things that work well serialization / deserialization error handling console

    UX file size
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    from client to server chapter 4

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    None
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    sourcemap parsing

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    reused sentry-cli code for server

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    +20 sec -> < 500ms processing time

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    debug symbols

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    proguard

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    marrying python and rust chapter 5

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    github.com/mitsuhiko/snaek

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    from setuptools import setup, find_packages setup( name='example', version='0.0.1', packages=find_packages(), include_package_data=True,

    zip_safe=False, platforms='any', install_requires=[ 'snaek', ], snaek_rust_modules=[ ('example._native', 'rust/'), ] )
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    build rust library expose rust -> cabi snaek to consume

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    #[repr(C)] pub struct Point { pub x: f32, pub y:

    f32, } #[no_mangle] pub unsafe extern "C" fn example_get_origin() -> Point { Point { x: 0.0, y: 0.0 } }
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    from example._native import lib def get_origin(): point = lib.example_get_origin() return

    (point.x, point.y)
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    things in rust to love chapter 6

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    #[derive(Serialize, Deserialize, Debug, Default)] pub struct Deploy { #[serde(rename="environment")] pub

    env: String, pub name: Option<String>, pub url: Option<String>, #[serde(rename="dateStarted")] pub started: Option<DateTime<UTC>>, #[serde(rename="dateFinished")] pub finished: Option<DateTime<UTC>>, }
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    /// Lists all deploys for a release pub fn list_deploys(&self,

    org: &str, version: &str) -> ApiResult<Vec<Deploy>> { self.get(&format!("/organizations/{}/releases/{}/deploys/", PathArg(org), PathArg(version)))? .convert() }
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    super flexible (de)serialization layer

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    crates we use / built chapter 7

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    if_chain lazy_static error-chain always useful

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    serde serde_derive serde_json serde_yaml for serialization

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    console indicatif dialoguer for pretty console UI ours :)

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    rust-curl openssl-probe HTTP stuff

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    elementtree XML ours :)

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    things we don't like chapter 8

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    compile times :'(

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    things rust needs chapter 9

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    “what not to do” guide

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    incremental compilation

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    higher level C ABI tools

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    Questions?