More than one connection open at one time for ESMockAPIBasedRepo

test/framework/src/main/java/org/elasticsearch/repositories/blobstore/ESMockAPIBasedRepositoryIntegTestCase.java

@@ -34,12 +34,15 @@
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.network.InetAddresses;
 import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.common.util.concurrent.EsExecutors;
+import org.elasticsearch.common.util.concurrent.ThreadContext;
 import org.elasticsearch.mocksocket.MockHttpServer;
 import org.elasticsearch.repositories.RepositoriesService;
 import org.elasticsearch.repositories.Repository;
 import org.elasticsearch.repositories.RepositoryMissingException;
 import org.elasticsearch.repositories.RepositoryStats;
 import org.elasticsearch.test.BackgroundIndexer;
+import org.elasticsearch.threadpool.ThreadPool;
 import org.junit.After;
 import org.junit.AfterClass;
 import org.junit.Before;
@@ -55,6 +58,9 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
@@ -83,20 +89,27 @@ protected interface BlobStoreHttpHandler extends HttpHandler {
     private static final byte[] BUFFER = new byte[1024];
 
     private static HttpServer httpServer;
+    private static ExecutorService executorService;
     protected Map<String, HttpHandler> handlers;
 
     private static final Logger log = LogManager.getLogger();
 
     @BeforeClass
     public static void startHttpServer() throws Exception {
         httpServer = MockHttpServer.createHttp(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0);
+        ThreadFactory threadFactory = EsExecutors.daemonThreadFactory("[" + ESMockAPIBasedRepositoryIntegTestCase.class.getName() + "]");
+        // the EncryptedRepository can require more than one connection open at one time
+        executorService = EsExecutors.newScaling(ESMockAPIBasedRepositoryIntegTestCase.class.getName(), 0, 2, 60,
+                TimeUnit.SECONDS, threadFactory, new ThreadContext(Settings.EMPTY));
         httpServer.setExecutor(r -> {
-            try {
-                r.run();
-            } catch (Throwable t) {
-                log.error("Error in execution on mock http server IO thread", t);
-                throw t;
-            }
+            executorService.execute(() -> {
+                try {
+                    r.run();
+                } catch (Throwable t) {
+                    log.error("Error in execution on mock http server IO thread", t);
+                    throw t;
+                }
+            });
         });
         httpServer.start();
     }
@@ -111,6 +124,7 @@ public void setUpHttpServer() {
     @AfterClass
     public static void stopHttpServer() {
         httpServer.stop(0);
+        ThreadPool.terminate(executorService, 10, TimeUnit.SECONDS);
         httpServer = null;
     }