make eftar closeable

fixes #2557

Author: Vladimir Kotal

opengrok-indexer/src/main/java/org/opengrok/indexer/web/EftarFileReader.java

@@ -22,6 +22,7 @@
  */
 package org.opengrok.indexer.web;
 
+import java.io.Closeable;
 import java.io.EOFException;
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -41,7 +42,7 @@
  *
  * @author Chandan
  */
-public class EftarFileReader {
+public class EftarFileReader implements Closeable {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(EftarFileReader.class);
 

opengrok-web/src/test/java/org/opengrok/web/api/v1/controller/SystemControllerTest.java

@@ -111,9 +111,10 @@ public void testDtagsEftarReload() throws IOException {
         // Check
         Path eftarPath = env.getDtagsEftarPath();
         assertTrue(eftarPath.toFile().exists());
-        EftarFileReader er = new EftarFileReader(eftarPath.toString());
-        for (int i = 0; i < descriptions.length; i++) {
-            assertEquals(descriptions[i][1], er.get(descriptions[i][0]));
+        try (EftarFileReader er = new EftarFileReader(eftarPath.toString())) {
+            for (int i = 0; i < descriptions.length; i++) {
+                assertEquals(descriptions[i][1], er.get(descriptions[i][0]));
+            }
         }
 
         // Cleanup