Read HTTP max concurrent requests from config

Author: Ralith

app/buck2_common/src/init.rs

@@ -58,6 +58,7 @@ pub struct HttpConfig {
     write_timeout_ms: Option<u64>,
     pub http2: bool,
     pub max_redirects: Option<usize>,
+    pub max_concurrent_requests: Option<usize>,
 }
 
 impl HttpConfig {
@@ -84,13 +85,18 @@ impl HttpConfig {
                 property: "http2",
             })?
             .unwrap_or(true);
+        let max_concurrent_requests = config.parse(BuckconfigKeyRef {
+            section: "http",
+            property: "max_concurrent_requests",
+        })?;
 
         Ok(Self {
             connect_timeout_ms,
             read_timeout_ms,
             write_timeout_ms,
             max_redirects,
             http2,
+            max_concurrent_requests,
         })
     }
 

app/buck2_server/src/daemon/state.rs

@@ -953,6 +953,9 @@ async fn http_client_from_startup_config(
         }
         _ => {}
     }
+    if let Some(n) = config.http.max_concurrent_requests {
+        builder.with_max_concurrent_requests(n);
+    }
 
     Ok(builder)
 }