From 2d27b442a379b29085031bfad56b2f2501a69f75 Mon Sep 17 00:00:00 2001
From: Diego Sampaio <chinello@gmail.com>
Date: Tue, 31 Jul 2018 14:50:56 -0300
Subject: [PATCH] fix: prevent send worker to stuck on db error

---
 lib/server/push.api.js | 81 ++++++++++++++++++++++--------------------
 1 file changed, 43 insertions(+), 38 deletions(-)

diff --git a/lib/server/push.api.js b/lib/server/push.api.js
index 5f901d4..12064fe 100644
--- a/lib/server/push.api.js
+++ b/lib/server/push.api.js
@@ -673,47 +673,52 @@ Push.Configure = function(options) {
           if (isSendingNotification) {
               return;
           }
-          // Set send fence
-          isSendingNotification = true;
-
-          // var countSent = 0;
-          var batchSize = options.sendBatchSize || 1;
-
-          var now = +new Date();
-
-          // Find notifications that are not being or already sent
-          var pendingNotifications = Push.notifications.find({ $and: [
-                // Message is not sent
-                { sent : false },
-                // And not being sent by other instances
-                { sending: { $lt: now } },
-                // And not queued for future
-                { $or: [
-                    { delayUntil: { $exists: false } },
-                    { delayUntil:  { $lte: new Date() } }
-                  ]
-                }
-            ]}, {
-              // Sort by created date
-              sort: { createdAt: 1 },
-              limit: batchSize
-            });
 
-          pendingNotifications.forEach(function(notification) {
-            try {
-              sendNotification(notification);
-            } catch(error) {
-              if (typeof Push.Log === 'function') {
-                Push.Log('Push: Could not send notification id: "' + notification._id + '", Error:', error.message);
-              }
-              if (Push.debug) {
-                console.log('Push: Could not send notification id: "' + notification._id + '", Error: ' + error.message);
+          try {
+
+            // Set send fence
+            isSendingNotification = true;
+
+            // var countSent = 0;
+            var batchSize = options.sendBatchSize || 1;
+
+            var now = +new Date();
+
+            // Find notifications that are not being or already sent
+            var pendingNotifications = Push.notifications.find({ $and: [
+                  // Message is not sent
+                  { sent : false },
+                  // And not being sent by other instances
+                  { sending: { $lt: now } },
+                  // And not queued for future
+                  { $or: [
+                      { delayUntil: { $exists: false } },
+                      { delayUntil:  { $lte: new Date() } }
+                    ]
+                  }
+              ]}, {
+                // Sort by created date
+                sort: { createdAt: 1 },
+                limit: batchSize
+              });
+
+            pendingNotifications.forEach(function(notification) {
+              try {
+                sendNotification(notification);
+              } catch(error) {
+                if (typeof Push.Log === 'function') {
+                  Push.Log('Push: Could not send notification id: "' + notification._id + '", Error:', error.message);
+                }
+                if (Push.debug) {
+                  console.log('Push: Could not send notification id: "' + notification._id + '", Error: ' + error.message);
+                }
               }
-            }
-          }); // EO forEach
+            }); // EO forEach
+          } finally {
 
-          // Remove the send fence
-          isSendingNotification = false;
+            // Remove the send fence
+            isSendingNotification = false;
+          }
       }, options.sendInterval || 15000); // Default every 15th sec
 
     } else {