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feat(ext/fetch): support fallible request-builder hooks (#18116)

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This tweaks the signature of `request_builder_hook` in order to support
fallible hooks.

The rationale for this is mostly on two sides:
* it allows a hook to inspect and possibly drop an outgoing request
(e.g. for policying purposes), bubbling up a detailed error message to
the user.
* it wires into newer `reqwest` API which allows to split and then
reassemble a `RequestBuilder`, although only in a fallible way
(https://github.com/seanmonstar/reqwest/pull/1770)
This commit is contained in:
Luca Bruno 2023-03-13 11:29:05 +01:00 committed by GitHub
parent e5673f5ed8
commit 3f26ee8604
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1 changed files with 4 additions and 2 deletions
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6
ext/fetch/lib.rs
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@ -72,7 +72,8 @@ pub struct Options {
pub user_agent: String, pub user_agent: String,
pub root_cert_store: Option<RootCertStore>, pub root_cert_store: Option<RootCertStore>,
pub proxy: Option<Proxy>, pub proxy: Option<Proxy>,
pub request_builder_hook: Option<fn(RequestBuilder) -> RequestBuilder>, pub request_builder_hook:
Option<fn(RequestBuilder) -> Result<RequestBuilder, AnyError>>,
pub unsafely_ignore_certificate_errors: Option<Vec<String>>, pub unsafely_ignore_certificate_errors: Option<Vec<String>>,
pub client_cert_chain_and_key: Option<(String, String)>, pub client_cert_chain_and_key: Option<(String, String)>,
pub file_fetch_handler: Rc<dyn FetchHandler>, pub file_fetch_handler: Rc<dyn FetchHandler>,
@ -342,7 +343,8 @@ where
let options = state.borrow::<Options>(); let options = state.borrow::<Options>();
if let Some(request_builder_hook) = options.request_builder_hook { if let Some(request_builder_hook) = options.request_builder_hook {
request = request_builder_hook(request); request = request_builder_hook(request)
.map_err(|err| type_error(err.to_string()))?;
} }
let cancel_handle = CancelHandle::new_rc(); let cancel_handle = CancelHandle::new_rc();