Handle and cache meetup API failures

Author: themightychris

php-classes/RemoteSystems/Meetup.php

@@ -3,12 +3,14 @@
 namespace RemoteSystems;
 
 use Cache;
+use Exception;
 
 class Meetup
 {
     public static $groupUrl;
     public static $signedEventsUrl;
-    public static $defaultCacheTime = 1800;
+    public static $defaultCacheTime = 600;
+    public static $failureCacheTime = 60;
     public static $eventsFilter;
 
     public static function getEventUrl($meetupID)
@@ -31,9 +33,18 @@ public static function getEvents($ttl = null)
         }
 
         $cacheKey = 'meetup/events';
+        $data = Cache::fetch($cacheKey);
 
-        if (!$data = Cache::fetch($cacheKey)) {
-            $data = json_decode(file_get_contents(static::$signedEventsUrl), true);
+        if ($data === null) {
+            // cached failure
+            throw new Exception('Meetup API unavailable');
+        } elseif ($data === false) {
+            $data = @json_decode(@file_get_contents(static::$signedEventsUrl), true);
+ 
+            if (!$data) {
+                Cache::store($cacheKey, null, static::$failureCacheTime);
+                throw new Exception('Meetup API unavailable');
+            }
 
             if (static::$eventsFilter) {
                 if (is_string(static::$eventsFilter)) {

site-root/home.php

@@ -6,28 +6,33 @@
 
 
 // meetups
-    $meetups = RemoteSystems\Meetup::getEvents();
-    $nextMeetup = array_shift($meetups);
+    try {
+        $meetups = RemoteSystems\Meetup::getEvents();
 
-    // detect if meetup is happening right now
-    if($nextMeetup && $nextMeetup['time'] < $now) {
-        $currentMeetup = $nextMeetup;
         $nextMeetup = array_shift($meetups);
+    
+        // detect if meetup is happening right now
+        if($nextMeetup && $nextMeetup['time'] < $now) {
+            $currentMeetup = $nextMeetup;
+            $nextMeetup = array_shift($meetups);
+        }
+    
+        // TODO: delete this!
+        elseif(!empty($_GET['force_current'])) {
+            $currentMeetup = $nextMeetup;
+        }
+    
+        if($currentMeetup) {
+            $currentMeetup['checkins'] = Laddr\MemberCheckin::getAllForMeetupByProject($currentMeetup['id']);
+        }
+    
+        $pageData['currentMeetup'] = $currentMeetup;
+        $pageData['nextMeetup'] = $nextMeetup;
+        $pageData['futureMeetups'] = $meetups;
+    } catch (Exception $e) {
+        // just omit meetup data
     }
 
-    // TODO: delete this!
-    elseif(!empty($_GET['force_current'])) {
-        $currentMeetup = $nextMeetup;
-    }
-
-    if($currentMeetup) {
-        $currentMeetup['checkins'] = Laddr\MemberCheckin::getAllForMeetupByProject($currentMeetup['id']);
-    }
-
-    $pageData['currentMeetup'] = $currentMeetup;
-    $pageData['nextMeetup'] = $nextMeetup;
-    $pageData['futureMeetups'] = $meetups;
-
 
 // projects
     $pageData['projectsTotal'] = Laddr\Project::getCount();