Don't fail if index does not exist while getting folder content

core/src/main/java/fr/pilato/elasticsearch/crawler/fs/service/FsCrawlerManagementServiceElasticsearchImpl.java

@@ -86,28 +86,33 @@ public Collection<String> getFileDirectory(String path)
         }
 
         Collection<String> files = new ArrayList<>();
-        ESSearchResponse response = client.search(
-                new ESSearchRequest()
-                        .withIndex(settings.getElasticsearch().getIndex())
-                        .withSize(REQUEST_SIZE)
-                        .addStoredField("file.filename")
-                        .withESQuery(new ESTermQuery("path.root", SignTool.sign(path))));
 
-        if (response.getHits() != null) {
-            for (ESSearchHit hit : response.getHits()) {
-                String name;
-                if (hit.getStoredFields() != null
-                        && hit.getStoredFields().get("file.filename") != null) {
-                    // In case someone disabled _source which is not recommended
-                    name = hit.getStoredFields().get("file.filename").get(0);
-                } else {
-                    // Houston, we have a problem ! We can't get the old files from ES
-                    logger.warn("Can't find stored field name to check existing filenames in path [{}]. " +
-                            "Please set store: true on field [file.filename]", path);
-                    throw new RuntimeException("Mapping is incorrect: please set stored: true on field [file.filename].");
+        try {
+            ESSearchResponse response = client.search(
+                    new ESSearchRequest()
+                            .withIndex(settings.getElasticsearch().getIndex())
+                            .withSize(REQUEST_SIZE)
+                            .addStoredField("file.filename")
+                            .withESQuery(new ESTermQuery("path.root", SignTool.sign(path))));
+
+            if (response.getHits() != null) {
+                for (ESSearchHit hit : response.getHits()) {
+                    String name;
+                    if (hit.getStoredFields() != null
+                            && hit.getStoredFields().get("file.filename") != null) {
+                        // In case someone disabled _source which is not recommended
+                        name = hit.getStoredFields().get("file.filename").get(0);
+                    } else {
+                        // Houston, we have a problem ! We can't get the old files from ES
+                        logger.warn("Can't find stored field name to check existing filenames in path [{}]. " +
+                                "Please set store: true on field [file.filename]", path);
+                        throw new RuntimeException("Mapping is incorrect: please set stored: true on field [file.filename].");
+                    }
+                    files.add(name);
                 }
-                files.add(name);
             }
+        } catch (ElasticsearchClientException e) {
+            logger.debug("Index [{}] doesn't exist.", settings.getElasticsearch().getIndex());
         }
 
         logger.trace("We found: {}", files);

elasticsearch-client/src/main/java/fr/pilato/elasticsearch/crawler/fs/client/ElasticsearchClient.java

@@ -632,7 +632,6 @@ public ESSearchResponse search(ESSearchRequest request) throws ElasticsearchClie
         logger.trace("Elasticsearch query to run: {}", query);
 
         try {
-
             String response = httpPost(url, query, new AbstractMap.SimpleImmutableEntry<>("version", "true"));
             ESSearchResponse esSearchResponse = new ESSearchResponse(response);