refactoring

redisson/src/main/java/org/redisson/remote/BaseRemoteProxy.java

@@ -53,13 +53,13 @@ public abstract class BaseRemoteProxy {
     final CommandAsyncExecutor commandExecutor;
     private final String name;
     final String responseQueueName;
-    private final ConcurrentMap<String, ResponseEntry> responses;
+    private final Map<String, ResponseEntry> responses;
     final Codec codec;
     final String executorId;
     final BaseRemoteService remoteService;
     
     BaseRemoteProxy(CommandAsyncExecutor commandExecutor, String name, String responseQueueName,
-            ConcurrentMap<String, ResponseEntry> responses, Codec codec, String executorId, BaseRemoteService remoteService) {
+            Map<String, ResponseEntry> responses, Codec codec, String executorId, BaseRemoteService remoteService) {
         super();
         this.commandExecutor = commandExecutor;
         this.name = name;
@@ -121,14 +121,7 @@ public abstract class BaseRemoteProxy {
 
         ResponseEntry entry;
         synchronized (responses) {
-            entry = responses.get(responseQueueName);
-            if (entry == null) {
-                entry = new ResponseEntry();
-                ResponseEntry oldEntry = responses.putIfAbsent(responseQueueName, entry);
-                if (oldEntry != null) {
-                    entry = oldEntry;
-                }
-            }
+            entry = responses.computeIfAbsent(responseQueueName, k -> new ResponseEntry());
 
             addCancelHandling(requestId, responseFuture);
 
@@ -160,15 +153,17 @@ public abstract class BaseRemoteProxy {
                             }
 
                             RemoteServiceTimeoutException ex = new RemoteServiceTimeoutException("No response after " + timeout + "ms");
-                            if (responseFuture.tryFailure(ex)) {
-                                List<Result> list = entry.getResponses().get(requestId);
-                                list.remove(0);
-                                if (list.isEmpty()) {
-                                    entry.getResponses().remove(requestId);
-                                }
-                                if (entry.getResponses().isEmpty()) {
-                                    responses.remove(responseQueueName, entry);
-                                }
+                            if (!responseFuture.tryFailure(ex)) {
+                                return;
+                            }
+
+                            List<Result> list = entry.getResponses().get(requestId);
+                            list.remove(0);
+                            if (list.isEmpty()) {
+                                entry.getResponses().remove(requestId);
+                            }
+                            if (entry.getResponses().isEmpty()) {
+                                responses.remove(responseQueueName, entry);
                             }
                         }
                     }