[profiling] Take care of @UpdateForV9 (elastic#123977)

* [profiling] Take care of @UpdateForV9

* Fix GetStackTracesResponseTests

Author: rockdaboot

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/CO2Calculator.java

@@ -7,7 +7,7 @@
 
 package org.elasticsearch.xpack.profiling.action;
 
-import org.elasticsearch.core.UpdateForV9;
+import org.elasticsearch.core.UpdateForV10;
 
 import java.util.Map;
 
@@ -54,7 +54,8 @@ public double getAnnualCO2Tons(String hostID, long samples) {
         return getKiloWattsPerCore(host) * getCO2TonsPerKWH(host) * annualCoreHours * getDatacenterPUE(host);
     }
 
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // only allow OTEL semantic conventions
+    @UpdateForV10(owner = UpdateForV10.Owner.PROFILING) // only allow OTEL semantic conventions
+    // still required for data that has been migrated from 8.x to 9.x
     private double getKiloWattsPerCore(HostMetadata host) {
         return switch (host.hostArchitecture) {
             // For the OTEL donation of the profiling agent, we switch to OTEL semantic conventions,

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/GetFlamegraphResponse.java

@@ -13,7 +13,7 @@
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.xcontent.ChunkedToXContentHelper;
 import org.elasticsearch.common.xcontent.ChunkedToXContentObject;
-import org.elasticsearch.core.UpdateForV9;
+import org.elasticsearch.core.UpdateForV10;
 import org.elasticsearch.xcontent.ToXContent;
 
 import java.io.IOException;
@@ -25,9 +25,7 @@ public class GetFlamegraphResponse extends ActionResponse implements ChunkedToXC
     private final int size;
     private final double samplingRate;
     private final long selfCPU;
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // remove this field - it is unused in Kibana
     private final long totalCPU;
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // remove this field - it is unused in Kibana
     private final long totalSamples;
     private final List<Map<String, Integer>> edges;
     private final List<String> fileIds;
@@ -173,7 +171,7 @@ public long getTotalSamples() {
         return totalSamples;
     }
 
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // change casing from Camel Case to Snake Case (requires updates in Kibana as well)
+    @UpdateForV10(owner = UpdateForV10.Owner.PROFILING) // change casing from Camel Case to Snake Case (requires updates in Kibana as well)
     @Override
     public Iterator<? extends ToXContent> toXContentChunked(ToXContent.Params params) {
         /*

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/GetStackTracesResponse.java

@@ -13,7 +13,6 @@
 import org.elasticsearch.common.xcontent.ChunkedToXContentHelper;
 import org.elasticsearch.common.xcontent.ChunkedToXContentObject;
 import org.elasticsearch.core.Nullable;
-import org.elasticsearch.core.UpdateForV9;
 import org.elasticsearch.xcontent.ToXContent;
 
 import java.util.Collections;
@@ -29,10 +28,8 @@ public class GetStackTracesResponse extends ActionResponse implements ChunkedToX
     private final Map<String, StackFrame> stackFrames;
     @Nullable
     private final Map<String, String> executables;
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // remove this field - it is unused in Kibana
     @Nullable
     private final Map<String, TraceEvent> stackTraceEvents;
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // remove this field - it is unused in Kibana
     private final int totalFrames;
     private final double samplingRate;
     private final long totalSamples;
@@ -101,7 +98,6 @@ public Iterator<? extends ToXContent> toXContentChunked(ToXContent.Params params
                 stackTraceEvents,
                 (n, v) -> ChunkedToXContentHelper.object(n, v, entry -> (b, p) -> b.field(entry.getKey(), entry.getValue().count))
             ),
-            Iterators.single((b, p) -> b.field("total_frames", totalFrames)),
             Iterators.single((b, p) -> b.field("sampling_rate", samplingRate)),
             // the following fields are intentionally not written to the XContent representation (only needed on the transport layer):
             //

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/HostMetadata.java

@@ -7,7 +7,7 @@
 
 package org.elasticsearch.xpack.profiling.action;
 
-import org.elasticsearch.core.UpdateForV9;
+import org.elasticsearch.core.UpdateForV10;
 import org.elasticsearch.xcontent.ToXContentObject;
 import org.elasticsearch.xcontent.XContentBuilder;
 
@@ -31,8 +31,9 @@ final class HostMetadata implements ToXContentObject {
         this.profilingNumCores = profilingNumCores != null ? profilingNumCores : DEFAULT_PROFILING_NUM_CORES;
     }
 
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING)
+    @UpdateForV10(owner = UpdateForV10.Owner.PROFILING)
     // remove fallback to the "profiling.host.machine" field and remove it from the component template "profiling-hosts".
+    // still required for data that has been migrated from 8.x to 9.x
     public static HostMetadata fromSource(Map<String, Object> source) {
         if (source != null) {
             String hostID = (String) source.get("host.id");

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/InstanceType.java

@@ -7,7 +7,7 @@
 
 package org.elasticsearch.xpack.profiling.action;
 
-import org.elasticsearch.core.UpdateForV9;
+import org.elasticsearch.core.UpdateForV10;
 import org.elasticsearch.xcontent.ToXContentObject;
 import org.elasticsearch.xcontent.XContentBuilder;
 
@@ -74,7 +74,8 @@ public static InstanceType fromHostSource(Map<String, Object> source) {
         return new InstanceType(provider, region, null);
     }
 
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // remove this method
+    @UpdateForV10(owner = UpdateForV10.Owner.PROFILING) // remove this method
+    // still required for data that has been migrated from 8.x to 9.x
     private static InstanceType fromObsoleteHostSource(Map<String, Object> source) {
         // Check and handle AWS.
         String region = (String) source.get("ec2.placement.region");

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/SubGroup.java

@@ -7,7 +7,7 @@
 
 package org.elasticsearch.xpack.profiling.action;
 
-import org.elasticsearch.core.UpdateForV9;
+import org.elasticsearch.core.UpdateForV10;
 import org.elasticsearch.xcontent.ToXContentFragment;
 import org.elasticsearch.xcontent.XContentBuilder;
 
@@ -19,7 +19,7 @@
 public class SubGroup implements ToXContentFragment {
     private final String name;
     private Long count;
-    @UpdateForV9(owner = UpdateForV9.Owner.PROFILING) // remove legacy XContent rendering
+    @UpdateForV10(owner = UpdateForV10.Owner.PROFILING) // remove legacy XContent rendering
     private final Map<String, SubGroup> subgroups;
 
     public static SubGroup root(String name) {

x-pack/plugin/profiling/src/test/java/org/elasticsearch/xpack/profiling/action/GetStackTracesResponseTests.java

@@ -56,8 +56,8 @@ private GetStackTracesResponse createTestInstance() {
 
     public void testChunking() {
         AbstractChunkedSerializingTestCase.assertChunkCount(createTestInstance(), instance -> {
-            // start, end, total_frames, samplingrate
-            int chunks = 4;
+            // start, end, samplingrate
+            int chunks = 3;
             chunks += size(instance.getExecutables());
             chunks += size(instance.getStackFrames());
             chunks += size(instance.getStackTraces());