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Félix
@felix.maneville:qonfucius.team
[m]
Okay, so we can use an Arc directly
1 reply
Félix
@felix.maneville:qonfucius.team
[m]

I'm having some issue with redis integration. A redis::Connection needs to be mutable in order to write something (in my case, a queue with XADD). So I have to use a RwLock for the redis connection in my app_data and it slows down the API a lot:

  • without redis I have 70k operations done in 60s
  • with redis I have barely 30k

Since the Connection is a Pin<Box<>> I thought I could also clone it but it doesn't seem to work.

How do other people handle redis connections using actix?

sanchezroselly
@sanchezroselly
hi, a beginner issue. i am running 'sqlx_todo' example and when posting a json to the server, i get "Error trying to create new todo".
i have used wireshark to check my post and it looks nice. i follow all the instructions in readme.md except setting up username and password, because it does not make sense using sqlite.
does anyone have some skills on this example? thanks everyone.
Mehmet ERİBOL
@mehmeteribol_gitlab
hi. i am tring to implement a middleware example with beta-rc9 version.
fn call(&self, req: S::Request) -> Self::Future { TimeoutServiceResponse { fut: self.service.call(req), sleep: Sleep::new(clock::now() + self.timeout), } }
and it gives error: "fn call(&self, req: S::Request) -> Self::Future {
| ^^^^^^^ associated type Request not found"
asonix (he/they)
@asonix:matrix.asonix.dog
[m]
Request is no longer an associated type on the Service and Transform traits, it is a generic argument to the trait
so S::Request is no longer a valid type
Mehmet ERİBOL
@mehmeteribol_gitlab
I got this codes from api docs. Do i have to remove it?
asonix (he/they)
@asonix:matrix.asonix.dog
[m]
It looks like the documentation is not correct. https://docs.rs/actix-web/4.0.0-beta.9/actix_web/dev/trait.Transform.html in the example Service implementation, the second argument to the call method should be of type Req, not of type S::Request
Mehmet ERİBOL
@mehmeteribol_gitlab
thank you, error is gone
Yoric
@dotyoric:matrix.org
[m]
Hi
I'm trying to write code that uses both actix-web and matrix-rust-sdk.
(i.e. I'm writing a bot with a web API)
Unfortunately, both libs seem to want to take control on the main thread.
  1. Afaict, the future returned by HttpServer.run() only resolves when we shutdown the webserver.
  1. Afaict, it's the same thing for the matrix-rust-sdk.
  1. According to my experiments, it looks like HttpServer::run cannot be called from a tokio::task::spawn.
Am I missing something?
robjtede
@robjtede:matrix.org
[m]
easiest trick here is to launch actix-web server in a new std thread
Yoric
@dotyoric:matrix.org
[m]
Oh, that would work? I assumed that the #[actix_web::main] was doing some magic.
dotyoric:matrix.org @dotyoric:matrix.org will try that.
Yoric
@dotyoric:matrix.org
[m]
robjtede: Do I have to somehow spin some kind of executor on that thread?
robjtede
@robjtede:matrix.org
[m]
Yoric
@dotyoric:matrix.org
[m]
Otherwise, I won't be able to await HttpServer::run.
robjtede
@robjtede:matrix.org
[m]
std::thread::spawn(move || {
  actix_web::rt::System::new().block_on(async move {
     ...
  })
})
Yoric
@dotyoric:matrix.org
[m]
Note: it's System::new("some name").
robjtede
@robjtede:matrix.org
[m]
right, in v3, yes
Yoric
@dotyoric:matrix.org
[m]
Also, it works :) Thanks!
(now attempting to deploy a MVP)
quambene
@quambene

Consider an endpoint for post requests via post macro (https://docs.rs/actix-web/3.3.2/actix_web/attr.post.html). For example using #[post("/login")].

Is it possible to define the path elsewhere like const LOGIN: &str = "/login" and use it in the post macro? I would like to collect all endpoints at one place.

I couldn't make it work. I tried #[post(LOGIN)] and #[post("{}", LOGIN)] as well as #[post("{LOGIN}")] but without success.

Cheers

3 replies
robjtede
@robjtede:matrix.org
[m]
rkfox
@rkfox
Are wildcard routes supported? ie.
#[get("/files/*"
I'm not sure what happened; I thought this was working before. But now this wildcard route is not working.
rkfox
@rkfox
I was using one of the betas previously; maybe v4.0.0-beta.4 but I can't seem to get it working again. I think it broke after upgrading to beta.8.
1 reply
Stepan Kuzmin
@stepankuzmin

Hi everyone!

I'm getting thread panic in runtime after upgrading actix from 0.10 to either 0.11 or 0.12 with

thread 'main' panicked at '`spawn_local` called from outside of a `task::LocalSet`', /Users/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.12.0/src/task/local.rs:305:18

The only change I've made to my code is that I've removed the name argument from the actix::System::new:

let sys = actix::System::new();

let db = SyncArbiter::start(3, move || DbActor(pool.clone()));
let coordinator: Addr<_> = CoordinatorActor::default().start();

HttpServer::new(move || {
    let state = create_state(db.clone(), coordinator.clone(), config.clone());

    let cors_middleware = Cors::default().allow_any_origin();

    App::new()
        .data(state)
        .wrap(cors_middleware)
        .wrap(middleware::NormalizePath::new(
            middleware::normalize::TrailingSlash::MergeOnly,
        ))
        .wrap(middleware::Logger::default())
        .wrap(middleware::Compress::default())
        .configure(router)
})
.bind(listen_addresses.clone())
.unwrap_or_else(|_| panic!("Can't bind to {}", listen_addresses))
.keep_alive(keep_alive)
.shutdown_timeout(0)
.workers(worker_processes)
.run();

sys.run()

My current dependencies are

actix = "0.12"
actix-cors = "0.5.4"
actix-rt = "1.1"
actix-web = "3.3.2"

What am I missing?

Stepan Kuzmin
@stepankuzmin

I got it

actix 0.12 depends on actix-rt 2 which is not compat with actix-rt 1

Namely this pattern would not work anymore.
let sys = System::new();
HttpServer::run();
Instead it should be changed to something like this.
System::new().block_on(some_future)

Izdihar
@tengkuizdihar:matrix.org
[m]
So, I'm using actix + diesel for one of my hobby project. What do you guys think about using block_on when using diesel?
5 replies
Given that I use web::block
Well thank you for the insight. I've seen some questions online being asked about this and they said that I'm going to use the same thread pool as actix and might block the process if there's enough load? That's how I remember it anyway.
2 replies
Izdihar
@tengkuizdihar:matrix.org
[m]
I guess I need to get a deeper understanding on how this block thing works, given I'm a bit blind on this topic
2 replies
robjtede
@robjtede:matrix.org
[m]
It's come to our attention that the MSRV for Actix Web v3 was recently increased by a dependency update: http v0.2.5. It would now be Rust 1.46. If you want to keep the old MSRV 1.42 it should be as easy as adding an exact dep in your Cargo.toml: http = "=0.2.4".
asonix (he/they)
@asonix:matrix.asonix.dog
[m]
I tried implemeting io-uring support in my image hosting api and it works
1 reply
i think it's a tiny bit slower than using tokio::fs::File but that's because i implemented AsyncRead, AsyncWrite, and AsyncSeek on a wrapper of tokio_uring::fs::File and reading and writing copies all the bytes around
so maybe if I reworked my program to play more directly to io-uring i could squeeze out some more performance
Maybe implementing Stream<Item = Bytes> on tokio_uring::fs::File could work, since you could read directly into a Vec<u8> which you can magic into a Bytes at little cost
fakeshadow
@fakeshadow
I observer dobule the throughput with high concurrent file streaming.
I tried with 12core and 2048 connections.