X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=lib%2Fdbqueuemanager.php;h=750300928e435e0d1450b3206dea8cfdc56f9b14;hb=69ac99ff949ab0118ff25a62471980ad0ec7a52b;hp=46be54b30b5bf31dac52a9b75ddc27c66868efc6;hpb=58b427869a001a91d66cff497f1563b8277f1a67;p=quix0rs-gnu-social.git

diff --git a/lib/dbqueuemanager.php b/lib/dbqueuemanager.php
index 46be54b30b..750300928e 100644
--- a/lib/dbqueuemanager.php
+++ b/lib/dbqueuemanager.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Laconica, the distributed open-source microblogging tool
+ * StatusNet, the distributed open-source microblogging tool
  *
  * Simple-minded queue manager for storing items in the database
  *
@@ -20,12 +20,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  * @category  QueueManager
- * @package   Laconica
- * @author    Evan Prodromou <evan@controlyourself.ca>
- * @author    Sarven Capadisli <csarven@controlyourself.ca>
- * @copyright 2009 Control Yourself, Inc.
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @copyright 2009 StatusNet, Inc.
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link      http://laconi.ca/
+ * @link      http://status.net/
  */
 
 class DBQueueManager extends QueueManager
@@ -51,14 +50,50 @@ class DBQueueManager extends QueueManager
         return true;
     }
 
-    function nextItem($queue, $timeout=null)
+    function service($queue, $handler)
+    {
+        while (true) {
+            $this->_log(LOG_DEBUG, 'Checking for notices...');
+            $timeout = $handler->timeout();
+            $notice = $this->_nextItem($queue, $timeout);
+            if (empty($notice)) {
+                $this->_log(LOG_DEBUG, 'No notices waiting; idling.');
+                // Nothing in the queue. Do you
+                // have other tasks, like servicing your
+                // XMPP connection, to do?
+                $handler->idle(QUEUE_HANDLER_MISS_IDLE);
+            } else {
+                $this->_log(LOG_INFO, 'Got notice '. $notice->id);
+                // Yay! Got one!
+                if ($handler->handle_notice($notice)) {
+                    $this->_log(LOG_INFO, 'Successfully handled notice '. $notice->id);
+                    $this->_done($notice, $queue);
+                } else {
+                    $this->_log(LOG_INFO, 'Failed to handle notice '. $notice->id);
+                    $this->_fail($notice, $queue);
+                }
+                // Chance to e.g. service your XMPP connection
+                $this->_log(LOG_DEBUG, 'Idling after success.');
+                $handler->idle(QUEUE_HANDLER_HIT_IDLE);
+            }
+            // XXX: when do we give up?
+        }
+    }
+
+    function _nextItem($queue, $timeout=null)
     {
         $start = time();
         $result = null;
 
+        $sleeptime = 1;
+
         do {
             $qi = Queue_item::top($queue);
-            if (!empty($qi)) {
+            if (empty($qi)) {
+                $this->_log(LOG_DEBUG, "No new queue items, sleeping $sleeptime seconds.");
+                sleep($sleeptime);
+                $sleeptime *= 2;
+            } else {
                 $notice = Notice::staticGet('id', $qi->notice_id);
                 if (!empty($notice)) {
                     $result = $notice;
@@ -68,13 +103,14 @@ class DBQueueManager extends QueueManager
                     $qi->free();
                     $qi = null;
                 }
+                $sleeptime = 1;
             }
         } while (empty($result) && (is_null($timeout) || (time() - $start) < $timeout));
 
         return $result;
     }
 
-    function done($object, $queue)
+    function _done($object, $queue)
     {
         // XXX: right now, we only handle notices
 
@@ -84,18 +120,47 @@ class DBQueueManager extends QueueManager
                                         'transport' => $queue));
 
         if (empty($qi)) {
-            $this->log(LOG_INFO, 'Cannot find queue item for notice '.$notice->id.', queue '.$queue);
+            $this->_log(LOG_INFO, 'Cannot find queue item for notice '.$notice->id.', queue '.$queue);
         } else {
             if (empty($qi->claimed)) {
-                $this->log(LOG_WARNING, 'Reluctantly releasing unclaimed queue item '.
-                           'for '.$notice->id.', queue '.$queue);
+                $this->_log(LOG_WARNING, 'Reluctantly releasing unclaimed queue item '.
+                            'for '.$notice->id.', queue '.$queue);
             }
             $qi->delete();
             $qi->free();
             $qi = null;
         }
 
-        $this->log(LOG_INFO, 'done with notice ID = ' . $notice->id);
+        $this->_log(LOG_INFO, 'done with notice ID = ' . $notice->id);
+
+        $notice->free();
+        $notice = null;
+    }
+
+    function _fail($object, $queue)
+    {
+        // XXX: right now, we only handle notices
+
+        $notice = $object;
+
+        $qi = Queue_item::pkeyGet(array('notice_id' => $notice->id,
+                                        'transport' => $queue));
+
+        if (empty($qi)) {
+            $this->_log(LOG_INFO, 'Cannot find queue item for notice '.$notice->id.', queue '.$queue);
+        } else {
+            if (empty($qi->claimed)) {
+                $this->_log(LOG_WARNING, 'Ignoring failure for unclaimed queue item '.
+                            'for '.$notice->id.', queue '.$queue);
+            } else {
+                $orig = clone($qi);
+                $qi->claimed = null;
+                $qi->update($orig);
+                $qi = null;
+            }
+        }
+
+        $this->_log(LOG_INFO, 'done with notice ID = ' . $notice->id);
 
         $notice->free();
         $notice = null;