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Clean up build_update_instance_form in scheduled_tasks.rs (#4775)

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* Clean up build_update_instance_form in scheduled_tasks.rs

* remove unused import
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dullbananas 2024-06-04 05:04:16 -07:00 committed by GitHub
parent aefb41b551
commit 9ceb5b6386
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1 changed files with 41 additions and 48 deletions
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89
src/scheduled_tasks.rs
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@ -484,9 +484,6 @@ async fn update_instance_software(
/// This builds an instance update form, for a given domain.
/// If the instance sends a response, but doesn't have a well-known or nodeinfo,
/// Then return a default form with only the updated field.
///
/// TODO This function is a bit of a nightmare with its embedded matches, but the only other way
/// would be to extract the fetches into functions which return the default_form on errors.
async fn build_update_instance_form(
domain: &str,
client: &ClientWithMiddleware,
@ -504,55 +501,51 @@ async fn build_update_instance_form(
// First, fetch their /.well-known/nodeinfo, then extract the correct nodeinfo link from it
let well_known_url = format!("https://{}/.well-known/nodeinfo", domain);
match client.get(&well_known_url).send().await {
Ok(res) if res.status().is_client_error() => {
// Instance doesn't have well-known but sent a response, consider it alive
Some(instance_form)
}
Ok(res) => match res.json::<NodeInfoWellKnown>().await {
Ok(well_known) => {
// Find the first link where the rel contains the allowed rels above
match well_known.links.into_iter().find(|links| {
links
.rel
.as_str()
.starts_with("http://nodeinfo.diaspora.software/ns/schema/2.")
}) {
Some(well_known_link) => {
let node_info_url = well_known_link.href;
let Ok(res) = client.get(&well_known_url).send().await else {
// This is the only kind of error that means the instance is dead
return None;
};
// Fetch the node_info from the well known href
match client.get(node_info_url).send().await {
Ok(node_info_res) => match node_info_res.json::<NodeInfo>().await {
Ok(node_info) => {
// Instance sent valid nodeinfo, write it to db
// Set the instance form fields.
if let Some(software) = node_info.software.as_ref() {
instance_form.software.clone_from(&software.name);
instance_form.version.clone_from(&software.version);
}
Some(instance_form)
}
Err(_) => Some(instance_form),
},
Err(_) => Some(instance_form),
}
}
// If none is found, use the default form above
None => Some(instance_form),
}
}
Err(_) => {
// No valid nodeinfo but valid HTTP response, consider instance alive
Some(instance_form)
}
},
Err(_) => {
// dead instance, do nothing
None
// In this block, returning `None` is ignored, and only means not writing nodeinfo to db
async {
if res.status().is_client_error() {
return None;
}
let node_info_url = res
.json::<NodeInfoWellKnown>()
.await
.ok()?
.links
.into_iter()
.find(|links| {
links
.rel
.as_str()
.starts_with("http://nodeinfo.diaspora.software/ns/schema/2.")
})?
.href;
let software = client
.get(node_info_url)
.send()
.await
.ok()?
.json::<NodeInfo>()
.await
.ok()?
.software?;
instance_form.software = software.name;
instance_form.version = software.version;
Some(())
}
.await;
Some(instance_form)
}
#[cfg(test)]
#[allow(clippy::indexing_slicing)]
mod tests {