fix: harden degraded source handling

apis/sources/epa.mjs

@@ -50,29 +50,29 @@ const THRESHOLDS = {
 
 // Get recent RadNet analytical results (JSON)
 export async function getAnalyticalResults(opts = {}) {
-  const { rows = 50, startRow = 0 } = opts;
+  const { rows = 50, startRow = 0, timeout = 10000 } = opts;
   return safeFetch(
     `${RADNET_ANALYTICAL}/ROWS/${startRow}:${startRow + rows}/JSON`,
-    { timeout: 25000 }
+    { timeout, retries: 0, source: 'EPA RadNet' }
   );
 }
 
 // Get results filtered by state
 export async function getResultsByState(state, opts = {}) {
-  const { rows = 25, startRow = 0 } = opts;
+  const { rows = 25, startRow = 0, timeout = 8000 } = opts;
   return safeFetch(
     `${RADNET_ANALYTICAL}/ANA_STATE/${state}/ROWS/${startRow}:${startRow + rows}/JSON`,
-    { timeout: 25000 }
+    { timeout, retries: 0, source: 'EPA RadNet' }
   );
 }
 
 // Get results filtered by analyte type
 export async function getResultsByAnalyte(analyte, opts = {}) {
-  const { rows = 25, startRow = 0 } = opts;
+  const { rows = 25, startRow = 0, timeout = 8000 } = opts;
   const encoded = encodeURIComponent(analyte);
   return safeFetch(
     `${RADNET_ANALYTICAL}/ANA_TYPE/${encoded}/ROWS/${startRow}:${startRow + rows}/JSON`,
-    { timeout: 25000 }
+    { timeout, retries: 0, source: 'EPA RadNet' }
   );
 }
 
@@ -129,7 +129,20 @@ export async function briefing() {
   const signals = [];
 
   // Fetch recent analytical results (broad pull)
-  const recentData = await getAnalyticalResults({ rows: 100 });
+  const recentData = await getAnalyticalResults({ rows: 80, timeout: 10000 });
+  if (recentData?.error) {
+    return {
+      source: 'EPA RadNet',
+      timestamp: new Date().toISOString(),
+      status: 'degraded',
+      error: recentData.error,
+      message: 'EPA RadNet broad analytical endpoint did not return current data within the source budget.',
+      readings: [],
+      signals: ['EPA RadNet unavailable — cannot assess official US radiation readings'],
+      monitoredAnalytes: KEY_ANALYTES,
+      thresholds: THRESHOLDS,
+    };
+  }
   const recentRecords = Array.isArray(recentData) ? recentData : [];
 
   // Compact all readings
@@ -137,15 +150,21 @@ export async function briefing() {
   readings.push(...allReadings);
 
   // Also try to pull key analytes specifically
-  const analyteResults = await Promise.all(
+  const analyteResults = await Promise.allSettled(
     ['GROSS BETA', 'IODINE-131', 'CESIUM-137'].map(async analyte => {
-      const data = await getResultsByAnalyte(analyte, { rows: 20 });
+      const data = await getResultsByAnalyte(analyte, { rows: 10, timeout: 6000 });
       const records = Array.isArray(data) ? data : [];
       return { analyte, records: records.map(compactReading) };
     })
   );
 
-  for (const { analyte, records } of analyteResults) {
+  const analyteErrors = [];
+  for (const item of analyteResults) {
+    if (item.status !== 'fulfilled') {
+      analyteErrors.push(item.reason?.message || 'unknown analyte fetch error');
+      continue;
+    }
+    const { records } = item.value;
     // Add any records not already in our list
     for (const r of records) {
       if (!readings.some(existing =>
@@ -196,6 +215,8 @@ export async function briefing() {
   return {
     source: 'EPA RadNet',
     timestamp: new Date().toISOString(),
+    status: analyteErrors.length ? 'degraded' : 'ok',
+    ...(analyteErrors.length ? { error: 'epa_analyte_fetch_degraded', analyteErrors: analyteErrors.slice(0, 3) } : {}),
     totalReadings: readings.length,
     readings: readings.slice(0, 50), // cap for briefing size
     stateSummary,