Add proper config for rendered link handler

src/config.rs

@@ -47,6 +47,7 @@ pub(crate) struct Config {
     pub(crate) transfer: Option<TransferConfig>,
     pub(crate) merge_conflicts: Option<MergeConflictConfig>,
     pub(crate) bot_pull_requests: Option<BotPullRequests>,
+    pub(crate) rendered_link: Option<RenderedLinkConfig>,
 }
 
 #[derive(PartialEq, Eq, Debug, serde::Deserialize)]
@@ -408,6 +409,13 @@ pub(crate) struct MergeConflictConfig {
 #[serde(deny_unknown_fields)]
 pub(crate) struct BotPullRequests {}
 
+#[derive(PartialEq, Eq, Debug, serde::Deserialize)]
+#[serde(rename_all = "kebab-case")]
+#[serde(deny_unknown_fields)]
+pub(crate) struct RenderedLinkConfig {
+    pub(crate) trigger_files: Vec<String>,
+}
+
 fn get_cached_config(repo: &str) -> Option<Result<Arc<Config>, ConfigurationError>> {
     let cache = CONFIG_CACHE.read().unwrap();
     cache.get(repo).and_then(|(config, fetch_time)| {
@@ -528,6 +536,9 @@ mod tests {
             infra = "T-infra"
 
             [shortcut]
+
+            [rendered-link]
+            trigger-files = ["posts/"]
         "#;
         let config = toml::from_str::<Config>(&config).unwrap();
         let mut ping_teams = HashMap::new();
@@ -587,6 +598,9 @@ mod tests {
                 transfer: None,
                 merge_conflicts: None,
                 bot_pull_requests: None,
+                rendered_link: Some(RenderedLinkConfig {
+                    trigger_files: vec!["posts/".to_string()]
+                })
             }
         );
     }
@@ -649,6 +663,7 @@ mod tests {
                 transfer: None,
                 merge_conflicts: None,
                 bot_pull_requests: None,
+                rendered_link: None,
             }
         );
     }

src/handlers.rs

@@ -102,12 +102,15 @@ pub async fn handle(ctx: &Context, event: &Event) -> Vec<HandlerError> {
         );
     }
 
-    if let Err(e) = rendered_link::handle(ctx, event).await {
-        log::error!(
-            "failed to process event {:?} with rendered_link handler: {:?}",
-            event,
-            e
-        );
+    if let Some(rendered_link_config) = config.as_ref().ok().and_then(|c| c.rendered_link.as_ref())
+    {
+        if let Err(e) = rendered_link::handle(ctx, event, rendered_link_config).await {
+            log::error!(
+                "failed to process event {:?} with rendered_link handler: {:?}",
+                event,
+                e
+            );
+        }
     }
 
     if let Err(e) = relnotes::handle(ctx, event).await {

src/handlers/rendered_link.rs

@@ -3,36 +3,36 @@ use std::borrow::Cow;
 use anyhow::bail;
 
 use crate::{
+    config::RenderedLinkConfig,
     github::{Event, IssuesAction, IssuesEvent},
     handlers::Context,
 };
 
-pub async fn handle(ctx: &Context, event: &Event) -> anyhow::Result<()> {
-    let e = if let Event::Issue(e) = event {
-        e
-    } else {
+pub async fn handle(
+    ctx: &Context,
+    event: &Event,
+    config: &RenderedLinkConfig,
+) -> anyhow::Result<()> {
+    let Event::Issue(e) = event else {
         return Ok(());
     };
 
     if !e.issue.is_pr() {
         return Ok(());
     }
 
-    let repo = e.issue.repository();
-    let prefix = match (&*repo.organization, &*repo.repository) {
-        ("rust-lang", "rfcs") => "text/",
-        ("rust-lang", "blog.rust-lang.org") => "posts/",
-        _ => return Ok(()),
-    };
-
-    if let Err(e) = add_rendered_link(&ctx, &e, prefix).await {
+    if let Err(e) = add_rendered_link(&ctx, &e, config).await {
         tracing::error!("Error adding rendered link: {:?}", e);
     }
 
     Ok(())
 }
 
-async fn add_rendered_link(ctx: &Context, e: &IssuesEvent, prefix: &str) -> anyhow::Result<()> {
+async fn add_rendered_link(
+    ctx: &Context,
+    e: &IssuesEvent,
+    config: &RenderedLinkConfig,
+) -> anyhow::Result<()> {
     if e.action == IssuesAction::Opened
         || e.action == IssuesAction::Closed
         || e.action == IssuesAction::Reopened
@@ -42,7 +42,12 @@ async fn add_rendered_link(ctx: &Context, e: &IssuesEvent, prefix: &str) -> anyh
 
         let rendered_link = files
             .iter()
-            .find(|f| f.filename.starts_with(prefix))
+            .find(|f| {
+                config
+                    .trigger_files
+                    .iter()
+                    .any(|tf| f.filename.starts_with(tf))
+            })
             .map(|file| {
                 let head = e.issue.head.as_ref().unwrap();
                 let base = e.issue.base.as_ref().unwrap();