Feature - TransactionalOperation.syncSlaves setting added #4083

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

@@ -29,6 +29,7 @@ public final class TransactionOptions {
     private int retryAttempts = 3;
     private long retryInterval = 1500;
 
+    private int syncSlaves = 0;
     private long syncTimeout = 5000;
     
     private long timeout = 5000;
@@ -87,8 +88,8 @@ public final class TransactionOptions {
      * <p>
      * Default is <code>1500 milliseconds</code>
      * 
-     * @param retryInterval - time interval
-     * @param retryIntervalUnit - time interval unit
+     * @param retryInterval time interval
+     * @param retryIntervalUnit time interval unit
      * @return self instance
      */
     public TransactionOptions retryInterval(long retryInterval, TimeUnit retryIntervalUnit) {
@@ -97,14 +98,13 @@ public final class TransactionOptions {
     }
 
     /**
-     * Synchronization data timeout between Redis master participating in transaction and its slaves.
-     * <p>
-     * Default is <code>5000 milliseconds</code>
-     * 
-     * @param syncTimeout - synchronization timeout
-     * @param syncUnit - synchronization timeout time unit
+     * Use {@link #syncSlaves} method instead.
+     *
+     * @param syncTimeout synchronization timeout
+     * @param syncUnit synchronization timeout time unit
      * @return self instance
      */
+    @Deprecated
     public TransactionOptions syncSlavesTimeout(long syncTimeout, TimeUnit syncUnit) {
         this.syncTimeout = syncUnit.toMillis(syncTimeout);
         return this;
@@ -113,6 +113,33 @@ public final class TransactionOptions {
         return syncTimeout;
     }
 
+    /**
+     * Synchronize write operations execution within defined timeout
+     * across specified amount of Redis slave nodes.
+     * <p>
+     * Default slaves value is <code>0</code> which means available slaves
+     * at the moment of execution and <code>-1</code> means no sync at all.
+     * <p>
+     * Default timeout value is <code>5000 milliseconds</code>
+     * NOTE: Redis 3.0+ required
+     *
+     * @param slaves slaves amount for synchronization.
+     *                 Default value is <code>0</code> which means available slaves
+     *                 at the moment of execution and <code>-1</code> means no sync at all.
+     * @param timeout synchronization timeout
+     * @param unit synchronization timeout time unit
+     * @return self instance
+     */
+    public TransactionOptions syncSlaves(int slaves, long timeout, TimeUnit unit) {
+        this.syncSlaves = slaves;
+        this.syncTimeout = unit.toMillis(timeout);
+        return this;
+    }
+
+    public int getSyncSlaves() {
+        return syncSlaves;
+    }
+
     public long getTimeout() {
         return timeout;
     }

redisson/src/main/java/org/redisson/transaction/RedissonTransaction.java

@@ -218,6 +218,11 @@ public class RedissonTransaction implements RTransaction {
     private BatchOptions createOptions() {
         MasterSlaveEntry entry = commandExecutor.getConnectionManager().getEntrySet().iterator().next();
         int syncSlaves = entry.getAvailableSlaves();
+        if (options.getSyncSlaves() == -1) {
+            syncSlaves = 0;
+        } else if (options.getSyncSlaves() > 0) {
+            syncSlaves = options.getSyncSlaves();
+        }
 
         BatchOptions batchOptions = BatchOptions.defaults()
                 .syncSlaves(syncSlaves, options.getSyncTimeout(), TimeUnit.MILLISECONDS)