ZP-834 Remove SINK_FORCERECHECK configuration option and implementation.

Released under the Affero GNU General Public License (AGPL) version 3.

src/config.php

@@ -165,11 +165,6 @@
     // a higher value if you have a high load on the server.
     define('PING_INTERVAL', 30);
 
-    // Interval in seconds to force a re-check of potentially missed notifications when
-    // using a changes sink. Default are 300 seconds (every 5 min).
-    // This can also be disabled by setting it to false
-    define('SINK_FORCERECHECK', 300);
-
     // Set the fileas (save as) order for contacts in the webaccess/webapp/outlook.
     // It will only affect new/modified contacts on the mobile which then are synced to the server.
     // Possible values are:

src/lib/core/synccollections.php

@@ -462,7 +462,7 @@ class SyncCollections implements Iterator {
 
         // use changes sink where available
         $changesSink = false;
-        $forceRealExport = 0;
+
         // do not create changessink if there are no folders
         if (!empty($classes) && ZPush::GetBackend()->HasChangesSink()) {
             $changesSink = true;
@@ -523,16 +523,6 @@ class SyncCollections implements Iterator {
 
             // Use changes sink if available
             if ($changesSink) {
-                // in some occasions we do realize a full export to see if there are pending changes
-                // every 5 minutes this is also done to see if there were "missed" notifications
-                if (SINK_FORCERECHECK !== false && $forceRealExport+SINK_FORCERECHECK <= $now) {
-                    if ($this->CountChanges($onlyPingable)) {
-                        ZLog::Write(LOGLEVEL_DEBUG, "SyncCollections->CheckForChanges(): Using ChangesSink but found relevant changes on regular export");
-                        return true;
-                    }
-                    $forceRealExport = $now;
-                }
-
                 ZPush::GetTopCollector()->AnnounceInformation(sprintf("Sink %d/%ds on %s", ($now-$started), $lifetime, $checkClasses));
                 $notifications = ZPush::GetBackend()->ChangesSink($nextInterval);
 

src/lib/core/zpush.php

@@ -301,12 +301,6 @@ class ZPush {
         if (!is_array($specialLogUsers))
             throw new FatalMisconfigurationException("The WBXML log users is not an array.");
 
-        if (!defined('SINK_FORCERECHECK')) {
-            define('SINK_FORCERECHECK', 300);
-        }
-        else if (SINK_FORCERECHECK !== false && (!is_int(SINK_FORCERECHECK) || SINK_FORCERECHECK < 1))
-            throw new FatalMisconfigurationException("The SINK_FORCERECHECK value must be 'false' or a number higher than 0.");
-
         if (!defined('SYNC_CONTACTS_MAXPICTURESIZE')) {
             define('SYNC_CONTACTS_MAXPICTURESIZE', 49152);
         }