Actix web impl responder
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This means, that our handler config is actually shorter and a lot more readable. Other than that, custom error handling is now simpler and it seems that the whole concept of having to configure custom error handling separately using with_async_config as such has gone away. The first thing we need to do is using the async version of reqwest: use reqwest:: r#async:: Īnother change is how AppState is passed to the App.
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We’ll start with the HTTP call first and work our way back to the handler.
ACTIX WEB IMPL RESPONDER CODE
However, it’s not that much code which needs to be changed and we’ll look at two handlers (one POST and one GET) to see the differences from the handler to the external HTTP call. Unfortunately, it’s quite hard to do this one step at a time and keep everything compiling, as we will pass Futures through the whole stack instead of Results. In this example, we will change this by using the async module of reqwest. The issue in the previous implementation was, that while actix handles incoming requests asynchronously by default, we used the synchronous version of the reqwest library, so we had something blocking on every request. The point of this is to first see how easy (or hard) it is to make the app fully non-blocking.Īlright, so this section will show how we move from synchronously handling requests in actix to asynchronously handling them. The first step will be to asyncify the handlers in the old Actix 0.7 application and then we’ll move the whole app to Actix 1.0. I would suggest you read the above-mentioned post, or at least glance over the code example in order to follow this post and the changes we’ll make. This time, we’ll move that simple app from Actix 0.7 to Actix 1.x and we’ll completely asyncify it.
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In a previous post I showed an example Rust web app using Actix 0.7 and synchronous handlers. Asyncifying an Actix Web App and Upgrading it to 1.0