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feat: blob URL support in fetch (#10120)

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This commit adds blob URL support in `fetch`. Tested via WPT. This is
the first op_crate to have a rust dependency on a different op_crate.
This commit is contained in:
Luca Casonato 2021-04-11 14:09:10 +02:00 • committed by GitHub
parent f5a9474952
commit e7f18d6468
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6 changed files with 40 additions and 5 deletions
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31
op_crates/fetch/lib.rs
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@ -2,7 +2,6 @@
#![deny(warnings)]
use data_url::DataUrl;
use deno_core::error::bad_resource_id;
use deno_core::error::generic_error;
use deno_core::error::null_opbuf;
@ -23,6 +22,8 @@ use deno_core::Resource;
use deno_core::ResourceId;
use deno_core::ZeroCopyBuf;
use data_url::DataUrl;
use deno_file::BlobUrlStore;
use reqwest::header::HeaderMap;
use reqwest::header::HeaderName;
use reqwest::header::HeaderValue;
@ -225,6 +226,34 @@ where
(request_rid, None)
}
"blob" => {
let blob_url_storage =
state.try_borrow::<BlobUrlStore>().ok_or_else(|| {
type_error("Blob URLs are not supported in this context.")
})?;
let blob = blob_url_storage
.get(url)?
.ok_or_else(|| type_error("Blob for the given URL not found."))?;
if method != "GET" {
return Err(type_error("Blob URL fetch only supports GET method."));
}
let response = http::Response::builder()
.status(http::StatusCode::OK)
.header(http::header::CONTENT_LENGTH, blob.data.len())
.header(http::header::CONTENT_TYPE, blob.media_type)
.body(reqwest::Body::from(blob.data))?;
let fut = async move { Ok(Response::from(response)) };
let request_rid = state
.resource_table
.add(FetchRequestResource(Box::pin(fut)));
(request_rid, None)
}
_ => return Err(type_error(format!("scheme '{}' not supported", scheme))),
};