Revert "Remove transport version V_8_16_1 (#136335)"

This reverts commit a509378.

Author: jdconrad

server/src/main/java/org/elasticsearch/TransportVersions.java

@@ -77,6 +77,7 @@ static TransportVersion def(int id) {
     public static final TransportVersion V_8_15_0 = def(8_702_0_02);
     public static final TransportVersion V_8_15_2 = def(8_702_0_03);
     public static final TransportVersion V_8_16_0 = def(8_772_0_01);
+    public static final TransportVersion V_8_16_1 = def(8_772_0_04);
     // TODO: leave this version until the very end to satisfy max transport version test
     public static final TransportVersion INITIAL_ELASTICSEARCH_8_17_5 = def(8_797_0_05);
 

server/src/main/java/org/elasticsearch/action/admin/cluster/node/info/NodeInfo.java

@@ -66,7 +66,11 @@ public NodeInfo(StreamInput in) throws IOException {
         super(in);
         if (in.getTransportVersion().onOrAfter(TransportVersions.V_8_12_0)) {
             version = in.readString();
-            compatibilityVersions = CompatibilityVersions.readVersion(in);
+            if (in.getTransportVersion().onOrAfter(TransportVersions.V_8_16_1)) {
+                compatibilityVersions = CompatibilityVersions.readVersion(in);
+            } else {
+                compatibilityVersions = new CompatibilityVersions(TransportVersion.readVersion(in), Map.of()); // unknown mappings versions
+            }
             indexVersion = IndexVersion.readVersion(in);
         } else {
             Version legacyVersion = Version.readVersion(in);
@@ -247,7 +251,11 @@ public void writeTo(StreamOutput out) throws IOException {
         } else {
             Version.writeVersion(Version.fromString(version), out);
         }
-        compatibilityVersions.writeTo(out);
+        if (out.getTransportVersion().onOrAfter(TransportVersions.V_8_16_1)) {
+            compatibilityVersions.writeTo(out);
+        } else if (out.getTransportVersion().onOrAfter(TransportVersions.V_8_8_0)) {
+            TransportVersion.writeVersion(compatibilityVersions.transportVersion(), out);
+        }
         if (out.getTransportVersion().onOrAfter(TransportVersions.V_8_11_X)) {
             IndexVersion.writeVersion(indexVersion, out);
             out.writeMap(componentVersions, StreamOutput::writeString, StreamOutput::writeVInt);

server/src/main/java/org/elasticsearch/search/builder/SearchSourceBuilder.java

@@ -281,7 +281,11 @@ public SearchSourceBuilder(StreamInput in) throws IOException {
         if (in.getTransportVersion().onOrAfter(TransportVersions.V_8_8_0)) {
             rankBuilder = in.readOptionalNamedWriteable(RankBuilder.class);
         }
-        skipInnerHits = in.readBoolean();
+        if (in.getTransportVersion().onOrAfter(TransportVersions.V_8_16_1)) {
+            skipInnerHits = in.readBoolean();
+        } else {
+            skipInnerHits = false;
+        }
     }
 
     @Override
@@ -348,7 +352,9 @@ public void writeTo(StreamOutput out) throws IOException {
         } else if (rankBuilder != null) {
             throw new IllegalArgumentException("cannot serialize [rank] to version [" + out.getTransportVersion().toReleaseVersion() + "]");
         }
-        out.writeBoolean(skipInnerHits);
+        if (out.getTransportVersion().onOrAfter(TransportVersions.V_8_16_1)) {
+            out.writeBoolean(skipInnerHits);
+        }
     }
 
     /**

x-pack/plugin/ent-search/src/main/java/org/elasticsearch/xpack/application/rules/QueryRulesetListItem.java

@@ -67,7 +67,12 @@ public QueryRulesetListItem(StreamInput in) throws IOException {
         } else {
             this.criteriaTypeToCountMap = Map.of();
         }
-        this.ruleTypeToCountMap = in.readMap(m -> in.readEnum(QueryRule.QueryRuleType.class), StreamInput::readInt);
+        TransportVersion streamTransportVersion = in.getTransportVersion();
+        if (streamTransportVersion.onOrAfter(TransportVersions.V_8_16_1)) {
+            this.ruleTypeToCountMap = in.readMap(m -> in.readEnum(QueryRule.QueryRuleType.class), StreamInput::readInt);
+        } else {
+            this.ruleTypeToCountMap = Map.of();
+        }
     }
 
     @Override
@@ -96,7 +101,10 @@ public void writeTo(StreamOutput out) throws IOException {
         if (out.getTransportVersion().onOrAfter(EXPANDED_RULESET_COUNT_TRANSPORT_VERSION)) {
             out.writeMap(criteriaTypeToCountMap, StreamOutput::writeEnum, StreamOutput::writeInt);
         }
-        out.writeMap(ruleTypeToCountMap, StreamOutput::writeEnum, StreamOutput::writeInt);
+        TransportVersion streamTransportVersion = out.getTransportVersion();
+        if (streamTransportVersion.onOrAfter(TransportVersions.V_8_16_1)) {
+            out.writeMap(ruleTypeToCountMap, StreamOutput::writeEnum, StreamOutput::writeInt);
+        }
     }
 
     /**

x-pack/plugin/ent-search/src/test/java/org/elasticsearch/xpack/application/rules/action/ListQueryRulesetsActionResponseBWCSerializingTests.java

@@ -8,6 +8,7 @@
 package org.elasticsearch.xpack.application.rules.action;
 
 import org.elasticsearch.TransportVersion;
+import org.elasticsearch.TransportVersions;
 import org.elasticsearch.common.io.stream.Writeable;
 import org.elasticsearch.xpack.application.EnterpriseSearchModuleTestUtils;
 import org.elasticsearch.xpack.application.rules.QueryRule;
@@ -16,6 +17,8 @@
 import org.elasticsearch.xpack.application.rules.QueryRulesetListItem;
 import org.elasticsearch.xpack.core.ml.AbstractBWCWireSerializationTestCase;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 
 public class ListQueryRulesetsActionResponseBWCSerializingTests extends AbstractBWCWireSerializationTestCase<
@@ -56,6 +59,22 @@ protected ListQueryRulesetsAction.Response mutateInstanceForVersion(
         ListQueryRulesetsAction.Response instance,
         TransportVersion version
     ) {
-        return instance;
+        if (version.onOrAfter(TransportVersions.V_8_16_1)) {
+            return instance;
+        } else if (version.onOrAfter(QueryRulesetListItem.EXPANDED_RULESET_COUNT_TRANSPORT_VERSION)) {
+            List<QueryRulesetListItem> updatedResults = new ArrayList<>();
+            for (QueryRulesetListItem listItem : instance.queryPage.results()) {
+                updatedResults.add(
+                    new QueryRulesetListItem(listItem.rulesetId(), listItem.ruleTotalCount(), listItem.criteriaTypeToCountMap(), Map.of())
+                );
+            }
+            return new ListQueryRulesetsAction.Response(updatedResults, instance.queryPage.count());
+        } else {
+            List<QueryRulesetListItem> updatedResults = new ArrayList<>();
+            for (QueryRulesetListItem listItem : instance.queryPage.results()) {
+                updatedResults.add(new QueryRulesetListItem(listItem.rulesetId(), listItem.ruleTotalCount(), Map.of(), Map.of()));
+            }
+            return new ListQueryRulesetsAction.Response(updatedResults, instance.queryPage.count());
+        }
     }
 }