chg: [internal] Log exception if exception is thrown during event downloading

app/Model/Event.php

@@ -1424,6 +1424,15 @@ class Event extends AppModel
         return $attribute;
     }
 
+    /**
+     * Download event from remote server.
+     *
+     * @param int $eventId
+     * @param array $server
+     * @param null|HttpSocket $HttpSocket
+     * @return array
+     * @throws Exception
+     */
     public function downloadEventFromServer($eventId, $server, $HttpSocket=null)
     {
         $url = $server['Server']['url'];
@@ -1431,10 +1440,18 @@ class Event extends AppModel
         $request = $this->setupSyncRequest($server);
         $uri = $url . '/events/view/' . $eventId . '/deleted[]:0/deleted[]:1/excludeGalaxy:1';
         $response = $HttpSocket->get($uri, $data = '', $request);
-        if ($response->isOk()) {
-            return json_decode($response->body, true);
+
+        if ($response === false) {
+            throw new Exception("Could not reach '$uri'.");
+        } else if (!$response->isOk()) {
+            throw new Exception("Fetching the '$uri' failed with HTTP error {$response->code}: {$response->reasonPhrase}");
         }
-        return null;
+
+        $event = json_decode($response->body, true);
+        if ($event === null) {
+            throw new Exception('Could not parse event JSON: ' . json_last_error_msg(), json_last_error());
+        }
+        return $event;
     }
 
     public function quickDelete($event)

app/Model/Server.php

@@ -2533,11 +2533,14 @@ class Server extends AppModel
 
     private function __pullEvent($eventId, &$successes, &$fails, $eventModel, $server, $user, $jobId, $force = false)
     {
-        $event = $eventModel->downloadEventFromServer(
-                $eventId,
-                $server
-        );
-        ;
+        try {
+            $event = $eventModel->downloadEventFromServer($eventId, $server);
+        } catch (Exception $e) {
+            $this->logException('Failed downloading the event ' . $eventId, $e);
+            $fails[$eventId] = __('failed downloading the event');
+            return false;
+        }
+
         if (!empty($event)) {
             if ($this->__checkIfEventIsBlockedBeforePull($event)) {
                 return false;

app/Model/Sighting.php

@@ -817,7 +817,13 @@ class Sighting extends AppModel
         if (!empty($eventIds)) {
             // download each event and save sightings
             foreach ($eventIds as $k => $eventId) {
-                $event = $this->Event->downloadEventFromServer($eventId, $server);
+                try {
+                    $event = $this->Event->downloadEventFromServer($eventId, $server);
+                } catch (Exception $e) {
+                    $this->logException('Failed downloading the event ' . $eventId, $e);
+                    continue;
+                }
+
                 $sightings = array();
                 if(!empty($event) && !empty($event['Event']['Attribute'])) {
                     foreach($event['Event']['Attribute'] as $attribute) {