Bug 966244 - Alarms are not updated after clearStats. r=gene, r=jshih

dom/network/src/NetworkStatsDB.jsm

@@ -576,7 +576,7 @@ NetworkStatsDB.prototype = {
   },
 
   clearInterfaceStats: function clearInterfaceStats(aNetwork, aResultCb) {
-    let network = [aNetwork.id, aNetwork.type];
+    let network = [aNetwork.network.id, aNetwork.network.type];
     let self = this;
 
     // Clear and save an empty sample to keep sync with system counters
@@ -609,7 +609,7 @@ NetworkStatsDB.prototype = {
           self._saveStats(aTxn, aStore, sample);
         }
       };
-    }, aResultCb);
+    }, this._resetAlarms.bind(this, aNetwork.networkId, aResultCb));
   },
 
   clearStats: function clearStats(aNetworks, aResultCb) {
@@ -863,6 +863,7 @@ NetworkStatsDB.prototype = {
     let record = { networkId: aAlarm.networkId,
                    absoluteThreshold: aAlarm.absoluteThreshold,
                    relativeThreshold: aAlarm.relativeThreshold,
+                   startTime: aAlarm.startTime,
                    data: aAlarm.data,
                    manifestURL: aAlarm.manifestURL,
                    pageURL: aAlarm.pageURL };
@@ -878,6 +879,7 @@ NetworkStatsDB.prototype = {
     let alarm = { networkId: aRecord.networkId,
                   absoluteThreshold: aRecord.absoluteThreshold,
                   relativeThreshold: aRecord.relativeThreshold,
+                  startTime: aRecord.startTime,
                   data: aRecord.data,
                   manifestURL: aRecord.manifestURL,
                   pageURL: aRecord.pageURL };
@@ -1004,5 +1006,29 @@ NetworkStatsDB.prototype = {
         cursor.continue();
       }
     }, aResultCb);
+  },
+
+  _resetAlarms: function _resetAlarms(aNetworkId, aResultCb) {
+    this.dbNewTxn(ALARMS_STORE_NAME, "readwrite", function(txn, store) {
+      if (DEBUG) {
+        debug("Reset alarms for network " + aNetworkId);
+      }
+
+      let lowerFilter = [aNetworkId, 0];
+      let upperFilter = [aNetworkId, ""];
+      let range = IDBKeyRange.bound(lowerFilter, upperFilter);
+
+      store.index("alarm").openCursor(range).onsuccess = function onsuccess(event) {
+        let cursor = event.target.result;
+        if (cursor) {
+          if (cursor.value.startTime) {
+            cursor.value.relativeThreshold = cursor.value.threshold;
+            cursor.update(cursor.value);
+          }
+          cursor.continue();
+          return;
+        }
+      };
+    }, aResultCb);
   }
 };

dom/network/src/NetworkStatsService.jsm

@@ -465,7 +465,9 @@ this.NetworkStatsService = {
         return;
       }
 
+      network = {network: network, networkId: aNetId};
       self._db.clearInterfaceStats(network, function onDBCleared(aError, aResult) {
+          self._updateCurrentAlarm(aNetId);
           mm.sendAsyncMessage("NetworkStats:Clear:Return",
                               { id: msg.id, error: aError, result: aResult });
       });
@@ -482,7 +484,14 @@ this.NetworkStatsService = {
       }
 
       let networks = aResult;
+      networks.forEach(function(network, index) {
+        networks[index] = {network: network, networkId: self.getNetworkId(network.id, network.type)};
+      }, self);
+
       self._db.clearStats(networks, function onDBCleared(aError, aResult) {
+        networks.forEach(function(network, index) {
+          self._updateCurrentAlarm(network.networkId);
+        }, self);
         mm.sendAsyncMessage("NetworkStats:ClearAll:Return",
                             { id: msg.id, error: aError, result: aResult });
       });