Feature - remainTimeToLive method added to RLock, RLockAsync, RLockRx and RLockReactive interfaces. #2011

redisson/src/main/java/org/redisson/RedissonMultiLock.java

@@ -547,4 +547,14 @@ public class RedissonMultiLock implements RLock {
         throw new UnsupportedOperationException();
     }
 
+    @Override
+    public RFuture<Long> remainTimeToLiveAsync() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public long remainTimeToLive() {
+        throw new UnsupportedOperationException();
+    }
+
 }

redisson/src/main/java/org/redisson/api/RLock.java

@@ -129,4 +129,13 @@ public interface RLock extends Lock, RLockAsync {
      */
     int getHoldCount();
 
+    /**
+     * Remaining time to live of this lock 
+     *
+     * @return time in milliseconds
+     *          -2 if the lock does not exist.
+     *          -1 if the lock exists but has no associated expire.
+     */
+    long remainTimeToLive();
+    
 }

redisson/src/main/java/org/redisson/api/RLockAsync.java

@@ -166,4 +166,13 @@ public interface RLockAsync {
      */
     RFuture<Boolean> isLockedAsync();
     
+    /**
+     * Remaining time to live of this lock 
+     *
+     * @return time in milliseconds
+     *          -2 if the lock does not exist.
+     *          -1 if the lock exists but has no associated expire.
+     */
+    RFuture<Long> remainTimeToLiveAsync();
+    
 }

redisson/src/main/java/org/redisson/api/RLockReactive.java

@@ -175,4 +175,13 @@ public interface RLockReactive {
      */
     Mono<Boolean> isLocked();
 
+    /**
+     * Remaining time to live of this lock 
+     *
+     * @return time in milliseconds
+     *          -2 if the lock does not exist.
+     *          -1 if the lock exists but has no associated expire.
+     */
+    Mono<Long> remainTimeToLive();
+    
 }

redisson/src/main/java/org/redisson/api/RLockRx.java

@@ -176,4 +176,13 @@ public interface RLockRx {
      */
     Single<Boolean> isLocked();
 
+    /**
+     * Remaining time to live of this lock 
+     *
+     * @return time in milliseconds
+     *          -2 if the lock does not exist.
+     *          -1 if the lock exists but has no associated expire.
+     */
+    Single<Long> remainTimeToLive();
+    
 }