Rust and Rocket: retrieve raw file content from form-data - rust

Question

Working with Rust and Rocket here. I have an endpoint to upload one file at a time with form-data:
use rocket::form::{Form, FromForm};
use rocket::fs::TempFile;
use std::ffi::OsStr;
use std::path::{Path};
use uuid::Uuid;
#[post("/file_upload", format = "multipart/form-data", data = "<form>")]
pub async fn file_upload(mut form: Form<Upload<'_>>) -> std::io::Result<String> {
// Get raw file
let file_name = form.file.raw_name().unwrap().dangerous_unsafe_unsanitized_raw().as_str();name
// Get extension of file name
let extension = Path::new(file_name).extension().and_then(OsStr::to_str).unwrap();
// Generate new UUID
let id: String = Uuid::new_v4().to_string();
// Build path to save file
let file_path = String::from("media/temp_files") + "/" + &id + "." + extension;
// Save file
form.file.persist_to(file_path).await?;
Ok(String::from("Ok"))
}
This works, but I am mixing persistence, business logic and http infrastructure in the same module.
I want to rely on Rocket only to retrieve the file stream and metadata (file name, size and content type), and pass it to another function that would be in charge or validation, image processing, etc.
I have access to the metadata, but I don't know how to retrieve the Buffered content from the TempFile struct.
// rocket-0.5.0-rc.2/src/fs/temp_file.rs
[…]
pub enum TempFile<'v> {
#[doc(hidden)]
File {
file_name: Option<&'v FileName>,
content_type: Option<ContentType>,
path: Either<TempPath, PathBuf>,
len: u64,
},
#[doc(hidden)]
Buffered {
content: &'v str,
}
}
[…]
I don't see any method returning it.Is there any method I'm missing to retrieve the raw file content? Or maybe there is a different struct/trait in Rocket to achieve this.