Load limiting safeguards

dashboard/src/interventions.md

@@ -3,20 +3,21 @@ title: Interventions
 ---
 
 ```js
-import {API, POLL} from "./components/config.js";
+import {API, POLL_HEAVY, apiFetch, pollDelay, sleep} from "./components/config.js";
 ```
 
 ```js
 // Live poll: all tasks (filtered client-side) + workstreams + topics
 const interventionState = (async function*() {
+  let failures = 0;
   while (true) {
     let tasks = [], wsMap = {}, ok = false;
     try {
       const [rt, rw, rto, rr] = await Promise.all([
-        fetch(`${API}/tasks/?limit=500`),
-        fetch(`${API}/workstreams/`),
-        fetch(`${API}/topics/`),
-        fetch(`${API}/repos/`),
+        apiFetch("/tasks/?limit=500"),
+        apiFetch("/workstreams/"),
+        apiFetch("/topics/"),
+        apiFetch("/repos/"),
       ]);
       ok = rt.ok && rw.ok && rto.ok && rr.ok;
       if (ok) {
@@ -36,8 +37,9 @@ const interventionState = (async function*() {
         }));
       }
     } catch {}
+    failures = ok ? 0 : failures + 1;
     yield {tasks, ok, ts: new Date()};
-    await new Promise(res => setTimeout(res, POLL));
+    await sleep(pollDelay({ok, base: POLL_HEAVY, failures}));
   }
 })();
 ```