merge graph timestamps into single array, use seconds

lib/ping.js

@@ -85,6 +85,14 @@ class PingController {
   pingAll = () => {
     const timestamp = this._app.timeTracker.newTimestamp()
 
+    // Flag each group as history graph additions each minute
+    // This is sent to the frontend for graph updates
+    const updateHistoryGraph = config.logToDatabase && (!this._lastHistoryGraphUpdate || timestamp - this._lastHistoryGraphUpdate >= 60 * 1000)
+
+    if (updateHistoryGraph) {
+      this._lastHistoryGraphUpdate = timestamp
+    }
+
     this.startPingTasks(results => {
       const updates = []
 
@@ -102,7 +110,7 @@ class PingController {
         // Generate a combined update payload
         // This includes any modified fields and flags used by the frontend
         // This will not be cached and can contain live metadata
-        const update = serverRegistration.handlePing(timestamp, result.resp, result.err, result.version)
+        const update = serverRegistration.handlePing(timestamp, result.resp, result.err, result.version, updateHistoryGraph)
 
         updates[serverRegistration.serverId] = update
       }
@@ -110,7 +118,8 @@ class PingController {
       // Send object since updates uses serverIds as keys
       // Send a single timestamp entry since it is shared
       this._app.server.broadcast(MessageOf('updateServers', {
-        timestamp,
+        timestamp: Math.floor(timestamp / 1000),
+        updateHistoryGraph,
         updates
       }))
     })