feat(reactive): Support Lettuce

Author: whatasame

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceReactiveStreamCommands.java

@@ -18,6 +18,7 @@
 import io.lettuce.core.XAddArgs;
 import io.lettuce.core.XClaimArgs;
 import io.lettuce.core.XGroupCreateArgs;
+import io.lettuce.core.XPendingArgs;
 import io.lettuce.core.XReadArgs;
 import io.lettuce.core.XReadArgs.StreamOffset;
 import io.lettuce.core.cluster.api.reactive.RedisClusterReactiveCommands;
@@ -56,6 +57,7 @@
  * @author Tugdual Grall
  * @author Dengliming
  * @author Mark John Moreno
+ * @author Jeonggyu Choi
  * @since 2.2
  */
 class LettuceReactiveStreamCommands implements ReactiveStreamCommands {
@@ -235,9 +237,16 @@ public Flux<CommandResponse<PendingRecordsCommand, PendingMessages>> xPending(
 			io.lettuce.core.Limit limit = command.isLimited() ? io.lettuce.core.Limit.from(command.getCount())
 					: io.lettuce.core.Limit.unlimited();
 
-			Flux<PendingMessage> publisher = command.hasConsumer() ? cmd.xpending(command.getKey(),
-					io.lettuce.core.Consumer.from(groupName, ByteUtils.getByteBuffer(command.getConsumerName())), range, limit)
-					: cmd.xpending(command.getKey(), groupName, range, limit);
+			XPendingArgs<ByteBuffer> xPendingArgs = XPendingArgs.Builder.xpending(groupName, range, limit);
+			if (command.hasConsumer()) {
+				io.lettuce.core.Consumer<ByteBuffer> consumer = io.lettuce.core.Consumer.from(groupName, ByteUtils.getByteBuffer(command.getConsumerName()));
+				xPendingArgs.consumer(consumer);
+			}
+			if (command.hasIdle()) {
+				xPendingArgs.idle(command.getIdle());
+			}
+
+			Flux<PendingMessage> publisher = cmd.xpending(command.getKey(), xPendingArgs);
 
 			return publisher.collectList().map(it -> {