Added elasticLastShardRouter

search-services/alfresco-search/src/main/java/org/alfresco/solr/tracker/ElasticLastShardRouter.java

@@ -0,0 +1,33 @@
+package org.alfresco.solr.tracker;
+
+import org.alfresco.solr.client.Acl;
+import org.alfresco.solr.client.Node;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Routes a document only if the shardInstance matches the provided shardId
+ */
+public class ElasticLastShardRouter implements DocRouter {
+
+    protected final static Logger log = LoggerFactory.getLogger(ExplicitRouter.class);
+    private final DBIDRouter fallback = new DBIDRouter();
+
+    public ElasticLastShardRouter() {
+    }
+
+    @Override
+    public boolean routeAcl(int shardCount, int shardInstance, Acl acl) {
+        //all acls go to all shards.
+        return true;
+    }
+
+    @Override
+    public boolean routeNode(int shardCount, int shardInstance, Node node) {
+
+
+        int explicitShardId = node.getExplicitShardId();
+        return explicitShardId == shardInstance;
+
+    }
+}