Show 'updates paused' instead of rollout % when Balrog emergency shutoff is active

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: pascalchevrel

app/controllers/release.php

@@ -123,6 +123,7 @@
         $beta_start_date,
         $firefox_releases,
         $release_rollout,
+        $updates_shutoff,
         $uptake,
         $chemspills,
         $ios_schedule,
@@ -159,6 +160,7 @@
         'beta_start_date'         => $beta_start_date,
         'firefox_releases'        => $firefox_releases,
         'release_rollout'         => $release_rollout,
+        'updates_shutoff'         => $updates_shutoff,
         'uptake'                  => $uptake,
         'chemspills'              => $chemspills,
         'ios_schedule'            => $ios_schedule,

app/models/past_release.php

@@ -91,6 +91,7 @@
 // Balrog (current release only)
 if ((int) $requested_version === RELEASE) {
     $_to_prefetch[URL::Balrog->value . 'rules/firefox-release'] = CACHE_TIME;
+    $_to_prefetch[URL::Balrog->value . 'emergency_shutoff'] = CACHE_TIME;
 }
 
 // Adoption rate, slow endpoint (current and previous release only)
@@ -332,6 +333,13 @@
 // Check current rollout for the release channel
 if ((int) $requested_version === RELEASE) {
     $rollout = Json::load(URL::Balrog->value . 'rules/firefox-release')['backgroundRate'];
+
+    // The Balrog emergency shutoff stops all updates regardless of the rule's backgroundRate
+    $shutoffs = Json::load(URL::Balrog->value . 'emergency_shutoff')['shutoffs'] ?? [];
+    $updates_shutoff = array_any(
+        $shutoffs,
+        fn($s) => ($s['product'] ?? '') === 'Firefox' && ($s['channel'] ?? '') === 'release'
+    );
 }
 
 return [
@@ -360,6 +368,7 @@
     $beta_start_date,
     $firefox_releases,
     $rollout ?? -1,
+    $updates_shutoff ?? false,
     $release_uptake,
     new Data()->chemspills,
     new IOS($requested_version)->getSchedule(),

app/views/templates/past_release.html.twig

@@ -132,7 +132,11 @@
         </tr>
     </table>
 
-  {% set rollout = release_rollout ~ '% rollout' %}
+  {% if updates_shutoff %}
+    {% set rollout = '<span class="text-danger" title="Emergency shutoff active in Balrog">updates paused</span>' %}
+  {% else %}
+    {% set rollout = release_rollout ~ '% rollout' %}
+  {% endif %}
   {% set hg_web_base = 'https://hg.mozilla.org/releases/mozilla-release/pushloghtml?fromchange=' %}
   {% set date_pattern = 'MMMM d' %}
 
@@ -183,7 +187,7 @@
                               {% set uptake_msg = '(adoption rate unavailable)' %}
                           {% endif %}
                           {% if dot_release_count == 0 %}
-                            {{ uptake_msg ~ ' - ' ~ rollout }}
+                            {{ uptake_msg }} - {{ rollout|raw }}
                           {% else %}
                             {{ uptake_msg }}
                           {% endif %}