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Rust at Sentry
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Armin Ronacher
July 07, 2017
Programming
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Rust at Sentry
An introduction to how we use Rust at Sentry.
Armin Ronacher
July 07, 2017
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Transcript
Rust at Sentry Armin @mitsuhiko Ronacher
Hi, I'm Armin ... and I do Open Source, lots
of Python and SaaS Flask Sentry …
… and here is where you can find me twitter.com/@mitsuhiko
github.com/mitsuhiko lucumr.pocoo.org/
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
None
None
a bit about us chapter 0
Open Source Project “sentry”
Cloud Hosted “sentry.io”
relatively flexible stack postgres, mysql, cassandra, riak, …
our general tech stack chapter 1
Lots of Python
Simple Stack Python RabbitMQ Postgres Riak Redis
Conservative Approach to Adding New Systems
prefer Internal Modularity over building More Services
how does rust fit?
why is there Rust? chapter 2
a bit of a hobby of mine
turned into sentry-cli (command line client to manage organizations /
build integration)
later reused components for Python modules
now part of our tech stack
how we started chapter 3
why we use Rust for sentry-cli
$ 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
$ curl -sL https://sentry.io/get-cli/ | bash $ npm install sentry-cli-binary
that and crates.io
rejected alternatives go JavaScript (bundled node) C / C++ Python
/ Ruby
things that work well serialization / deserialization error handling console
UX file size
from client to server chapter 4
None
sourcemap parsing
reused sentry-cli code for server
+20 sec -> < 500ms processing time
debug symbols
proguard
marrying python and rust chapter 5
github.com/mitsuhiko/snaek
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/'), ] )
build rust library expose rust -> cabi snaek to consume
#[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 } }
from example._native import lib def get_origin(): point = lib.example_get_origin() return
(point.x, point.y)
things in rust to love chapter 6
#[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>>, }
/// 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() }
super flexible (de)serialization layer
crates we use / built chapter 7
if_chain lazy_static error-chain always useful
serde serde_derive serde_json serde_yaml for serialization
console indicatif dialoguer for pretty console UI ours :)
rust-curl openssl-probe HTTP stuff
elementtree XML ours :)
things we don't like chapter 8
compile times :'(
things rust needs chapter 9
“what not to do” guide
incremental compilation
higher level C ABI tools
Questions?