storage_controller: periodic pageserver heartbeats (#7092)

## Problem If a pageserver was offline when the storage controller started, there was no mechanism to update the storage controller state when the pageserver becomes active. ## Summary of changes * Add a heartbeater module. The heartbeater must be driven by an external loop. * Integrate the heartbeater into the service. - Extend the types used by the service and scheduler to keep track of a nodes' utilisation score. - Add a background loop to drive the heartbeater and update the state based on the deltas it generated - Do an initial round of heartbeats at start-up
2026-08-18 03:58:19 +00:00 · 2024-03-14 15:21:36 +00:00
parent 9fe0193e51
commit 38767ace68
17 changed files with 779 additions and 88 deletions
@@ -2053,6 +2053,10 @@ async fn get_utilization(
    r: Request<Body>,
    _cancel: CancellationToken,
 ) -> Result<Response<Body>, ApiError> {
+    fail::fail_point!("get-utilization-http-handler", |_| {
+        Err(ApiError::ResourceUnavailable("failpoint".into()))
+    });
+
    // this probably could be completely public, but lets make that change later.
    check_permission(&r, None)?;