k8s-openapi
tokio
Our great sponsors
k8s-openapi | tokio | |
---|---|---|
7 | 196 | |
360 | 24,677 | |
- | 2.8% | |
8.3 | 9.5 | |
12 days ago | 4 days ago | |
Rust | Rust | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
k8s-openapi
-
WinBtrfs – an open-source btrfs driver for Windows
It's called sans-io in Python land, which is where I heard it first.
https://sans-io.readthedocs.io/
I did it for one of my projects back in 2018 https://github.com/Arnavion/k8s-openapi/commit/9a4fbb718b119...
-
The bane of my existence: Supporting both async and sync code in Rust
Another option is to implement your API in a sans-io form. Since k8s-openapi was mentioned (albeit for a different reason), I'll point out that its API gave you a request value that you could send using whatever sync or async HTTP client you want to use. It also gave you a corresponding function to parse the response, that you would call with the response bytes however you got them from your client.
https://github.com/Arnavion/k8s-openapi/blob/v0.19.0/README....
(Past tense because I removed all the API features from k8s-openapi after that release, for unrelated reasons.)
-
Welcome to Comprehensive Rust
Macro expansion is slow, but only noticeably in the specific situation of a) third-party proc macros, b) a debug build, and c) a few thousand invocations of said proc macros. This is because debug builds compile proc macros in debug mode too, so while the macro itself compiles quickly (because it's a debug build), it ends up running slowly (because it's a debug build).
I know this from observing this on a mostly auto-generated crate that had a couple of thousand types with `#[derive(serde::)]` on each. [1]
This doesn't affect most users, because first-party macros like `#[derive(Debug)]` etc are not slow because they're part of rustc and are thus optimized regardless of the profile, and even with third-party macros it is unlikely that they have thousands of invocations. Even if it is* a problem, users can opt in to compiling just the proc macros in release mode. [2]
[1]: https://github.com/Arnavion/k8s-openapi/issues/4
[2]: https://github.com/rust-lang/cargo/issues/5622
-
OpenAPI Generator allows generation of API client libraries from OpenAPI Specs
>OpenAPI Generator allows generation of API client libraries from OpenAPI Specs
It does, but the generated code can be very shitty for some combinations of spec and output language. I maintain Rust bindings for the Kubernetes API server's API, and I chose to write my own code generator instead. The README at https://github.com/Arnavion/k8s-openapi has more details.
-
Any good toy Rust project for k8s application?
k8s_openapi - https://github.com/Arnavion/k8s-openapi
-
Approaches for Chaining Access to Deeply Nested Optional Structs
For example: I have a routine that checks the value of (from k8s-openapi): Ingress -> IngressStatus -> LoadBalancerStatus -> Vec[0] -> String
-
Writing a Kubernetes CRD Controller in Rust
As the maintainer of the Rust bindings that the library used in the article (kube) is backed by, I can confirm that Kubernetes' openapi spec requires a lot of Kubernetes-specific handling to generate a good client than generic openapi generators do not provide.
See https://github.com/Arnavion/k8s-openapi/blob/master/README.m... for a full description.
I also confirm that I keep it up-to-date with Kubernetes releases and have been doing so for the ~3 years that it's been around. Not just the minor ones every few months, but even the point ones; these days the latter usually only involves updating the test cases instead of code changes and they're done within a few hours of the upstream release.
tokio
-
On Implementation of Distributed Protocols
Being able to control nondeterminism is particularly useful for testing and debugging. This allows creating reproducible test environments, as well as discrete-event simulation for faster-than-real-time simulation of time delays. For example, Cardano uses a simulation environment for the IO monad that closely follows core Haskell packages; Sui has a simulator based on madsim that provides an API-compatible replacement for the Tokio runtime and intercepts various POSIX API calls in order to enforce determinism. Both allow running the same code in production as in the simulator for testing.
-
I pre-released my project "json-responder" written in Rust
tokio / hyper / toml / serde / serde_json / json5 / console
-
Cryptoflow: Building a secure and scalable system with Axum and SvelteKit - Part 0
tokio - An asynchronous runtime for Rust
-
Top 10 Rusty Repositories for you to start your Open Source Journey
3. Tokio
-
API Gateway, Lambda, DynamoDB and Rust
The AWS SDK makes use of the async capabilities in the Tokio library. So when you see async in front of a fn that function is capable of executing asynchronously.
-
The More You Gno: Gno.land Monthly Updates - 6
Petar is also looking at implementing concurrency the way it is in Go to have a fully functional virtual machine as it is in the spec. This would likely attract more external contributors to developing the VM. One advantage of Rust is that, with the concurrency model, there is already an extensive library called Tokio which he can use. Petar stresses that this isn’t easy, but he believes it’s achievable, at least as a research topic around determinism and concurrency.
-
Consuming an SQS Event with Lambda and Rust
Another thing to point out is that async is a thing in Rust. I'm not going to begin to dive into this paradigm in this article, but know it's handled by the awesome Tokio framework.
-
netcrab: a networking tool
So I started by using Tokio, a popular async runtime. The docs and samples helped me get a simple outbound TCP connection working. The Rust async book also had a lot of good explanations, both practical and digging into the details of what a runtime does.
-
Thread-per-Core
Regarding the quote:
> The Original Sin of Rust async programming is making it multi-threaded by default. If premature optimization is the root of all evil, this is the mother of all premature optimizations, and it curses all your code with the unholy Send + 'static, or worse yet Send + Sync + 'static, which just kills all the joy of actually writing Rust.
Agree about the melodramatic tone. I also don't think removing the Send + Sync really makes that big a difference. It's the 'static that bothers me the most. I want scoped concurrency. Something like <https://github.com/tokio-rs/tokio/issues/2596>.
Another thing I really hate about Rust async right now is the poor instrumentation. I'm having a production problem at work right now in which some tasks just get stuck. I wish I could do the equivalent of `gdb; thread apply all bt`. Looking forward to <https://github.com/tokio-rs/tokio/issues/5638> landing at least. It exists right now but is experimental and in my experience sometimes panics. I'm actually writing a PR today to at least use the experimental version on SIGTERM to see what's going on, on the theory that if it crashes oh well, we're shutting down anyway.
Neither of these complaints would be addressed by taking away work stealing. In fact, I could keep doing down my list, and taking away work stealing wouldn't really help with much of anything.
-
PHP-Tokio – Use any async Rust library from PHP
The PHP <-> Rust bindings are provided by https://github.com/Nicelocal/ext-php-rs/ (our fork of https://github.com/davidcole1340/ext-php-rs with a bunch of UX improvements :).
php-tokio's integrates the https://revolt.run event loop with the https://tokio.rs event loop; async functionality is provided by the two event loops, in combination with PHP fibers through revolt's suspension API (I could've directly used the PHP Fiber API to provide coroutine suspension, but it was a tad easier with revolt's suspension API (https://revolt.run/fibers), since it also handles the base case of suspension in the main fiber).
What are some alternatives?
kube - Rust Kubernetes client and controller runtime
async-std - Async version of the Rust standard library
fusionauth-openapi - FusionAuth OpenAPI client
Rocket - A web framework for Rust.
go - The Go programming language
hyper - An HTTP library for Rust
spectrum - OpenAPI Spec SDK and Converter for OpenAPI 3.0 and 2.0 Specs to Postman 2.0 Collections. Example RingCentral spec included.
futures-rs - Zero-cost asynchronous programming in Rust
smithy - Smithy is a protocol-agnostic interface definition language and set of tools for generating clients, servers, and documentation for any programming language.
smol - A small and fast async runtime for Rust
comprehensive-rust - This is the Rust course used by the Android team at Google. It provides you the material to quickly teach Rust.
rayon - Rayon: A data parallelism library for Rust