Lucene: detect if the tmp index is currently being modified (last 3 minutes) to avoid multiple indexation tasks loaded concurrently.

Author: cdujeu

core/src/plugins/index.lucene/class.AjxpLuceneIndexer.php

@@ -162,12 +162,16 @@ public function applyAction($actionName, $httpVars, $fileVars)
                 $index =  $this->loadIndex($repoId, false);
             } catch (Exception $ex) {
                 AJXP_XMLWriter::header();
-                if (ConfService::backgroundActionsSupported() && !ConfService::currentContextIsCommandLine()) {
+                if ($this->seemsCurrentlyIndexing($repoId, 3)){
+                    AJXP_XMLWriter::sendMessage($messages["index.lucene.11"], null);
+                }else if (ConfService::backgroundActionsSupported() && !ConfService::currentContextIsCommandLine()) {
                     AJXP_Controller::applyActionInBackground($repoId, "index", array());
                     sleep(2);
                     AJXP_XMLWriter::triggerBgAction("check_index_status", array("repository_id" => $repoId), sprintf($messages["index.lucene.8"], "/"), true, 5);
+                    AJXP_XMLWriter::sendMessage($messages["index.lucene.7"], null);
+                }else{
+                    AJXP_XMLWriter::sendMessage($messages["index.lucene.12"], null);
                 }
-                AJXP_XMLWriter::sendMessage($messages["index.lucene.7"], null);
                 AJXP_XMLWriter::close();
                 return null;
             }
@@ -700,6 +704,22 @@ protected function loadTemporaryIndex($repositoryId){
         return $this->loadIndex($repositoryId, true, null, $tmpIndexPath);
     }
 
+    /**
+     * @param String $repositoryId
+     * @param int $checkInterval
+     * @return bool
+     */
+    protected function seemsCurrentlyIndexing($repositoryId, $checkInterval){
+        $tmpIndexPath = $this->getIndexPath($repositoryId)."-PYDIO_TMP";
+        if(is_dir($tmpIndexPath)){
+            $mtime = filemtime($tmpIndexPath);
+            if(time() - $mtime <= 60 * $checkInterval){
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * @param $repositoryId
      */

core/src/plugins/index.lucene/resources/i18n/de.php

@@ -30,4 +30,6 @@
     "8" => "Indiziere %s im Hintergrund",
     "9" => "Index für aktuelle Arbeitsumgebung nicht gefunden. Bitte starten Sie zuerst die Indizierung!",
     "10" => "Indiziere Unterordner im Hintergrund",
+    "11" => "Workspace seems to be currently indexing, please wait 3 minutes and retry your search.",
+    "12" => "Workspace is not indexed, try launching indexation manually!"
 );

core/src/plugins/index.lucene/resources/i18n/en.php

@@ -30,4 +30,6 @@
     "8" => "Indexing %s in background",
     "9" => "Cannot find index for current workspace! You should trigger the indexation of the data first!",
     "10" => "Indexing subfolders in background",
+    "11" => "Workspace seems to be currently indexing, please wait 3 minutes and retry your search.",
+    "12" => "Workspace is not indexed, try launching indexation manually!"
 );

core/src/plugins/index.lucene/resources/i18n/es.php

@@ -30,4 +30,6 @@
     "8" => "Indexando %s en segundo plano",
     "9" => "No puedo encontrar el índice de la carpeta actual! Debería ejecutar la indexación de los datos primero!",
     "10" => "Indexing subfolders in background",
+    "11" => "Workspace seems to be currently indexing, please wait 3 minutes and retry your search.",
+    "12" => "Workspace is not indexed, try launching indexation manually!"
 );

core/src/plugins/index.lucene/resources/i18n/fr.php

@@ -30,4 +30,6 @@
     "8" => "Indexation (%s) en arrière-plan.",
     "9" => "Impossible de trouver un index pour ce dépôt, vous devrez déclencher l'indexation d'abord !",
     "10" => "Indexation des sous-répertoires en arrière-plan",
+    "11" => "Le workspace est en cours d'indexation, veuillez attendre 3 minutes avant de réessayer.",
+    "12" => "Le workspace n'est pas indexé pour le moment, veuillez lancer l'indexation manuellement!"
 );

core/src/plugins/index.lucene/resources/i18n/it.php

@@ -30,4 +30,6 @@
     "8" => "Indicizzazione %s in background",
     "9" => "Impossibile trovare l'indice per il workspace corrente! È necessario attivare l'indicizzazione dei dati prima!",
     "10" => "Indicizzazione sottocartelle in background",
+    "11" => "Workspace seems to be currently indexing, please wait 3 minutes and retry your search.",
+    "12" => "Workspace is not indexed, try launching indexation manually!"
 );

core/src/plugins/index.lucene/resources/i18n/pt.php

@@ -30,4 +30,6 @@
     "8" => "A Indexação de %s está a correr em segundo plano",
     "9" => "Não foi possível encontrar um Índice para a Área de Trabalho Actual! Deverá ordenar uma Indexação dos ficheiros primeiro!",
     "10" => "A Indexar sub-pastas em segundo plano",
+    "11" => "Workspace seems to be currently indexing, please wait 3 minutes and retry your search.",
+    "12" => "Workspace is not indexed, try launching indexation manually!"
 );

core/src/plugins/index.lucene/resources/i18n/ru.php

@@ -30,4 +30,6 @@
     "8" => "Индексирование %s в фоновом режиме",
     "9" => "Невозможно найти индекс текущего рабочего пространства! Необходимо сначала включить индексацию!",
     "10" => "Индексирование подпапок в фоновом режиме",
+    "11" => "Workspace seems to be currently indexing, please wait 3 minutes and retry your search.",
+    "12" => "Workspace is not indexed, try launching indexation manually!"
 );