SOLR-3089: RequestBuilder now exposes isDistrib() method

solr/CHANGES.txt

@@ -274,6 +274,9 @@ Other Changes
 
 * SOLR-11902: Clarify in bin/solr help text whether commands can be run remotely (Jason Gerlowski)
 
+* SOLR-3089: RequestBuilder now exposes isDistrib() method. Using this, plugins can know whether a request is
+  distributed. (Rok Rejc, Frank Wesemann, Abhishek Kumar Singh, Mikhail Khludnev via Ishan Chattopadhyaya)
+
 ==================  7.2.1 ==================
 
 Consult the LUCENE_CHANGES.txt file for additional, low level, changes in this release.

solr/core/src/java/org/apache/solr/handler/component/ResponseBuilder.java

@@ -139,6 +139,13 @@ public class ResponseBuilder
   public List<ShardRequest> finished;  // requests that have received responses from all shards
   public String shortCircuitedURL;
 
+  /**
+   * This function will return true if this was a distributed search request.
+   */
+  public boolean isDistributed() {
+    return this.isDistrib;
+  }
+
   public int getShardNum(String shard) {
     for (int i = 0; i < shards.length; i++) {
       if (shards[i] == shard || shards[i].equals(shard)) return i;

solr/core/src/test/org/apache/solr/handler/ResponseBuilderTest.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.solr.handler;
+
+import java.util.ArrayList;
+
+import org.apache.solr.SolrTestCaseJ4;
+import org.apache.solr.handler.component.ResponseBuilder;
+import org.apache.solr.request.SolrQueryRequest;
+import org.apache.solr.response.SolrQueryResponse;
+import org.junit.BeforeClass;
+
+public class ResponseBuilderTest extends SolrTestCaseJ4 {
+
+  @BeforeClass
+  public static void beforeClass() throws Exception {
+    initCore("solrconfig.xml", "schema.xml");
+  }
+
+  //This test is being added to verify responseBuilder.isDistributed() exists and is visible.
+  public void testIsDistrib(){
+
+    SolrQueryRequest req = req("q", "title:test");
+    SolrQueryResponse rsp = new SolrQueryResponse();
+
+    ResponseBuilder responseBuilder = new ResponseBuilder(req, rsp, new ArrayList<>(0));
+    assertFalse(responseBuilder.isDistributed());
+
+  }
+
+}