Switch rolling restart to new style Requests (#32147)

In #29623 we added `Request` object flavored requests to the low level
REST client and in #30315 we deprecated the old `performRequest`s. This
changes all calls in the `qa/rolling-upgrade` project to use the new
versions.

Author: nik9000

qa/rolling-upgrade/src/test/java/org/elasticsearch/upgrades/RecoveryIT.java

@@ -18,8 +18,6 @@
  */
 package org.elasticsearch.upgrades;
 
-import org.apache.http.entity.ContentType;
-import org.apache.http.entity.StringEntity;
 import org.elasticsearch.Version;
 import org.elasticsearch.action.support.PlainActionFuture;
 import org.elasticsearch.client.Request;
@@ -32,14 +30,12 @@
 
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Future;
 import java.util.function.Predicate;
 
 import static com.carrotsearch.randomizedtesting.RandomizedTest.randomAsciiOfLength;
-import static java.util.Collections.emptyMap;
 import static org.elasticsearch.cluster.routing.UnassignedInfo.INDEX_DELAYED_NODE_LEFT_TIMEOUT_SETTING;
 import static org.elasticsearch.cluster.routing.allocation.decider.EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING;
 import static org.elasticsearch.cluster.routing.allocation.decider.MaxRetryAllocationDecider.SETTING_ALLOCATION_MAX_RETRY;
@@ -65,8 +61,9 @@ public void testHistoryUUIDIsGenerated() throws Exception {
             createIndex(index, settings.build());
         } else if (CLUSTER_TYPE == ClusterType.UPGRADED) {
             ensureGreen(index);
-            Response response = client().performRequest("GET", index + "/_stats", Collections.singletonMap("level", "shards"));
-            assertOK(response);
+            Request shardStatsRequest = new Request("GET", index + "/_stats");
+            shardStatsRequest.addParameter("level", "shards");
+            Response response = client().performRequest(shardStatsRequest);
             ObjectPath objectPath = ObjectPath.createFromResponse(response);
             List<Object> shardStats = objectPath.evaluate("indices." + index + ".shards.0");
             assertThat(shardStats, hasSize(2));
@@ -87,8 +84,9 @@ public void testHistoryUUIDIsGenerated() throws Exception {
     private int indexDocs(String index, final int idStart, final int numDocs) throws IOException {
         for (int i = 0; i < numDocs; i++) {
             final int id = idStart + i;
-            assertOK(client().performRequest("PUT", index + "/test/" + id, emptyMap(),
-                new StringEntity("{\"test\": \"test_" + randomAsciiOfLength(2) + "\"}", ContentType.APPLICATION_JSON)));
+            Request indexDoc = new Request("PUT", index + "/test/" + id);
+            indexDoc.setJsonEntity("{\"test\": \"test_" + randomAsciiOfLength(2) + "\"}");
+            client().performRequest(indexDoc);
         }
         return numDocs;
     }
@@ -113,7 +111,7 @@ protected void doRun() throws Exception {
 
     public void testRecoveryWithConcurrentIndexing() throws Exception {
         final String index = "recovery_with_concurrent_indexing";
-        Response response = client().performRequest("GET", "_nodes");
+        Response response = client().performRequest(new Request("GET", "_nodes"));
         ObjectPath objectPath = ObjectPath.createFromResponse(response);
         final Map<String, Object> nodeMap = objectPath.evaluate("nodes");
         List<String> nodes = new ArrayList<>(nodeMap.keySet());
@@ -139,7 +137,7 @@ public void testRecoveryWithConcurrentIndexing() throws Exception {
                 updateIndexSettings(index, Settings.builder().put(INDEX_ROUTING_ALLOCATION_ENABLE_SETTING.getKey(), (String)null));
                 asyncIndexDocs(index, 10, 50).get();
                 ensureGreen(index);
-                assertOK(client().performRequest("POST", index + "/_refresh"));
+                client().performRequest(new Request("POST", index + "/_refresh"));
                 assertCount(index, "_only_nodes:" + nodes.get(0), 60);
                 assertCount(index, "_only_nodes:" + nodes.get(1), 60);
                 assertCount(index, "_only_nodes:" + nodes.get(2), 60);
@@ -150,7 +148,7 @@ public void testRecoveryWithConcurrentIndexing() throws Exception {
                 updateIndexSettings(index, Settings.builder().put(INDEX_ROUTING_ALLOCATION_ENABLE_SETTING.getKey(), (String)null));
                 asyncIndexDocs(index, 60, 50).get();
                 ensureGreen(index);
-                assertOK(client().performRequest("POST", index + "/_refresh"));
+                client().performRequest(new Request("POST", index + "/_refresh"));
                 assertCount(index, "_only_nodes:" + nodes.get(0), 110);
                 assertCount(index, "_only_nodes:" + nodes.get(1), 110);
                 assertCount(index, "_only_nodes:" + nodes.get(2), 110);
@@ -161,15 +159,16 @@ public void testRecoveryWithConcurrentIndexing() throws Exception {
     }
 
     private void assertCount(final String index, final String preference, final int expectedCount) throws IOException {
-        final Response response = client().performRequest("GET", index + "/_count", Collections.singletonMap("preference", preference));
-        assertOK(response);
+        final Request request = new Request("GET", index + "/_count");
+        request.addParameter("preference", preference);
+        final Response response = client().performRequest(request);
         final int actualCount = Integer.parseInt(ObjectPath.createFromResponse(response).evaluate("count").toString());
         assertThat(actualCount, equalTo(expectedCount));
     }
 
 
     private String getNodeId(Predicate<Version> versionPredicate) throws IOException {
-        Response response = client().performRequest("GET", "_nodes");
+        Response response = client().performRequest(new Request("GET", "_nodes"));
         ObjectPath objectPath = ObjectPath.createFromResponse(response);
         Map<String, Object> nodesAsMap = objectPath.evaluate("nodes");
         for (String id : nodesAsMap.keySet()) {
@@ -216,7 +215,7 @@ public void testRelocationWithConcurrentIndexing() throws Exception {
                 updateIndexSettings(index, Settings.builder().put("index.routing.allocation.include._id", newNode));
                 asyncIndexDocs(index, 10, 50).get();
                 ensureGreen(index);
-                assertOK(client().performRequest("POST", index + "/_refresh"));
+                client().performRequest(new Request("POST", index + "/_refresh"));
                 assertCount(index, "_only_nodes:" + newNode, 60);
                 break;
             case UPGRADED:
@@ -226,8 +225,8 @@ public void testRelocationWithConcurrentIndexing() throws Exception {
                 );
                 asyncIndexDocs(index, 60, 50).get();
                 ensureGreen(index);
-                assertOK(client().performRequest("POST", index + "/_refresh"));
-                Response response = client().performRequest("GET", "_nodes");
+                client().performRequest(new Request("POST", index + "/_refresh"));
+                Response response = client().performRequest(new Request("GET", "_nodes"));
                 ObjectPath objectPath = ObjectPath.createFromResponse(response);
                 final Map<String, Object> nodeMap = objectPath.evaluate("nodes");
                 List<String> nodes = new ArrayList<>(nodeMap.keySet());