exposing the boostrap timestamp

src/main/java/net/openhft/chronicle/map/ChannelProvider.java

@@ -238,6 +238,23 @@ final class ChannelProvider implements Closeable {
                         }
                         notifier0 = modificationNotifier;
                     }
+
+                    /**
+                     *
+                     * @return the earliest bootstrap timestamp across all the channels
+                     */
+                    @Override
+                    public long bootStrapTimeStamp() {
+                        long boostapTimeStamp = Long.MAX_VALUE;
+
+                        for (int i = 0, len = chronicleChannelList.size(); i < len; i++) {
+                            Replica chronicleChannel = chronicleChannelList.get(i);
+                            boostapTimeStamp = Math.min(boostapTimeStamp, chronicleChannel
+                                    .acquireModificationIterator(remoteIdentifier).bootStrapTimeStamp());
+                        }
+
+                        return boostapTimeStamp;
+                    }
                 };
 
                 modificationIterator.set((int) remoteIdentifier, result0);
@@ -528,6 +545,11 @@ final class ChannelProvider implements Closeable {
                         modificationNotifier0 = modificationNotifier;
                     }
 
+                    @Override
+                    public long bootStrapTimeStamp() {
+                        return 0;
+                    }
+
                     @Override
                     public void addPayload(Bytes bytes) {
                         if (bytes.remaining() == 0)

src/main/java/net/openhft/chronicle/map/Replica.java

@@ -125,6 +125,13 @@ interface Replica extends Closeable, EngineReplicationLangBytes {
          * @param modificationNotifier gets notified when a change occurs
          */
         void setModificationNotifier(@NotNull final ModificationNotifier modificationNotifier);
+
+        /**
+         * @return the timestamp  that the remote client should bootstrap from when there has been a
+         * disconnection, this time maybe later than the message time as event are not send in
+         * chronological order from the bit set.
+         */
+        long bootStrapTimeStamp();
     }
 
     /**

src/main/java/net/openhft/chronicle/map/ReplicatedChronicleMap.java

@@ -88,10 +88,9 @@ import static net.openhft.lang.io.NativeBytes.wrap;
  * dilemma by using a node identifier, each node will have a unique identifier, the update from the
  * node with the smallest identifier wins. </p>
  *
- * @param <K> the entries key type
- * @param <V> the entries value type
+ * @param <K> the entries key type § * @param <V> the entries value type
  */
-public class ReplicatedChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? super KI>,
+class ReplicatedChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? super KI>,
         V, VI, MVI extends MetaBytesInterop<V, ? super VI>>
         extends VanillaChronicleMap<K, KI, MKI, V, VI, MVI>
         implements Replica, EntryExternalizable, EntryResolver<K, V>, EngineReplicationLangBytes {
@@ -125,13 +124,6 @@ public class ReplicatedChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? sup
         }
     }
 
-    private static void writeTo(Bytes destination, Bytes source) {
-
-        while (destination.remaining() > 0 && source.remaining() > 0) {
-            destination.writeByte(source.readByte());
-        }
-    }
-
     private int assignedModIterBitSetSizeInBytes() {
         return (int) CACHE_LINES.align(BYTES.alignAndConvert(127 + RESERVED_MOD_ITER, BITS), BYTES);
     }
@@ -189,10 +181,6 @@ public class ReplicatedChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? sup
         return identifierUpdatedBytes.readLong(remoteIdentifier * 8L);
     }
 
-    public long bootStrapTime(){
-        return this.acquireModificationIterator(this.identifier()).bootStrapTimeStamp();
-    }
-
     @Override
     void onHeaderCreated() {
         long offset = super.getHeaderSize();
@@ -1793,7 +1781,7 @@ public class ReplicatedChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? sup
             changes = ATSDirectBitSet.wrap(bytes);
         }
 
-        public void setModificationNotifier(ModificationNotifier modificationNotifier) {
+        public void setModificationNotifier(@NotNull ModificationNotifier modificationNotifier) {
             this.modificationNotifier = modificationNotifier;
         }
 
@@ -1934,7 +1922,7 @@ public class ReplicatedChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? sup
          * disconnection, this time maybe later than the message time as event are not send in
          * chronological order from the bit set.
          */
-        private long bootStrapTimeStamp() {
+        public long bootStrapTimeStamp() {
             final long timeStamp = bootStrapTimeStamp.get();
             long result = (timeStamp == 0) ? this.lastBootStrapTimeStamp : timeStamp;
             this.lastBootStrapTimeStamp = result;

src/test/java/net/openhft/chronicle/map/TCPSocketReplicationBootStrapTest.java

@@ -247,6 +247,10 @@ public class TCPSocketReplicationBootStrapTest {
         map1 = (ReplicatedChronicleMap<Integer, ?, ?, CharSequence, ?, ?>) ChronicleMapBuilder.of(Integer.class, CharSequence.class)
                 .replication((byte) 1, map1Config).create();
 
+        final long bootStrapTimeStamp = map1.acquireModificationIterator((byte) 1).bootStrapTimeStamp();
+        System.out.println("bootStrapTimeStamp=" + bootStrapTimeStamp);
+
+
         File persistenceFile = getPersistenceFile();
 
         TcpTransportAndNetworkConfig map2Config = TcpTransportAndNetworkConfig.of(8067)