[7.16] Add replicated field to get data stream api response. (#81140)

* [7.16] Add replicated field to get data stream api response.

Backporting #80988 to 7.16 branch.

Internally we already kept track of whether a data stream is replicated by CCR.
It is part of the `DataStream` class. This just adds it to the xcontent serialization
of the get data stream api response class.

Relates to elastic/kibana#118899

* adjust to 7.16 reality

Author: martijnvg

client/rest-high-level/src/main/java/org/elasticsearch/client/indices/DataStream.java

@@ -34,6 +34,7 @@ public final class DataStream {
     String ilmPolicyName;
     @Nullable
     private final Map<String, Object> metadata;
+    private final boolean replicated;
 
     public DataStream(
         String name,
@@ -45,7 +46,8 @@ public DataStream(
         @Nullable String ilmPolicyName,
         @Nullable Map<String, Object> metadata,
         boolean hidden,
-        boolean system
+        boolean system,
+        boolean replicated
     ) {
         this.name = name;
         this.timeStampField = timeStampField;
@@ -57,6 +59,7 @@ public DataStream(
         this.metadata = metadata;
         this.hidden = hidden;
         this.system = system;
+        this.replicated = replicated;
     }
 
     public String getName() {
@@ -99,6 +102,10 @@ public boolean isSystem() {
         return system;
     }
 
+    public boolean isReplicated() {
+        return replicated;
+    }
+
     public static final ParseField NAME_FIELD = new ParseField("name");
     public static final ParseField TIMESTAMP_FIELD_FIELD = new ParseField("timestamp_field");
     public static final ParseField INDICES_FIELD = new ParseField("indices");
@@ -109,6 +116,7 @@ public boolean isSystem() {
     public static final ParseField METADATA_FIELD = new ParseField("_meta");
     public static final ParseField HIDDEN_FIELD = new ParseField("hidden");
     public static final ParseField SYSTEM_FIELD = new ParseField("system");
+    public static final ParseField REPLICATED = new ParseField("replicated");
 
     @SuppressWarnings("unchecked")
     private static final ConstructingObjectParser<DataStream, Void> PARSER = new ConstructingObjectParser<>("data_stream", args -> {
@@ -123,6 +131,7 @@ public boolean isSystem() {
         Map<String, Object> metadata = (Map<String, Object>) args[7];
         boolean hidden = args[8] != null && (boolean) args[8];
         boolean system = args[9] != null && (boolean) args[9];
+        boolean replicated = args[10] != null && (boolean) args[10];
         return new DataStream(
             dataStreamName,
             timeStampField,
@@ -133,7 +142,8 @@ public boolean isSystem() {
             ilmPolicy,
             metadata,
             hidden,
-            system
+            system,
+            replicated
         );
     });
 
@@ -148,6 +158,7 @@ public boolean isSystem() {
         PARSER.declareObject(ConstructingObjectParser.optionalConstructorArg(), (p, c) -> p.map(), METADATA_FIELD);
         PARSER.declareBoolean(ConstructingObjectParser.optionalConstructorArg(), HIDDEN_FIELD);
         PARSER.declareBoolean(ConstructingObjectParser.optionalConstructorArg(), SYSTEM_FIELD);
+        PARSER.declareBoolean(ConstructingObjectParser.optionalConstructorArg(), REPLICATED);
     }
 
     public static DataStream fromXContent(XContentParser parser) throws IOException {
@@ -168,7 +179,8 @@ public boolean equals(Object o) {
             && system == that.system
             && Objects.equals(indexTemplate, that.indexTemplate)
             && Objects.equals(ilmPolicyName, that.ilmPolicyName)
-            && Objects.equals(metadata, that.metadata);
+            && Objects.equals(metadata, that.metadata)
+            && replicated == that.replicated;
     }
 
     @Override
@@ -183,7 +195,8 @@ public int hashCode() {
             ilmPolicyName,
             metadata,
             hidden,
-            system
+            system,
+            replicated
         );
     }
 }

docs/reference/data-streams/change-mappings-and-settings.asciidoc

@@ -577,7 +577,8 @@ stream's oldest backing index.
       "status": "GREEN",
       "template": "my-data-stream-template",
       "hidden": false,
-      "system": false
+      "system": false,
+      "replicated": false
     }
   ]
 }

docs/reference/indices/get-data-stream.asciidoc

@@ -207,6 +207,11 @@ use the <<indices-get-settings,get index settings API>>.
 (Boolean)
 If `true`, the data stream is created and managed by an Elastic stack component
 and cannot be modified through normal user interaction.
+
+`replicated`::
+(Boolean)
+If `true`, the data stream is created and managed by {ccr} and the local
+cluster can not write into this data stream or change its mappings.
 ====
 
 [[get-data-stream-api-example]]
@@ -246,7 +251,8 @@ The API returns the following response:
       "template": "my-index-template",
       "ilm_policy": "my-lifecycle-policy",
       "hidden": false,
-      "system": false
+      "system": false,
+      "replicated": false
     },
     {
       "name": "my-data-stream-two",
@@ -267,7 +273,8 @@ The API returns the following response:
       "template": "my-index-template",
       "ilm_policy": "my-lifecycle-policy",
       "hidden": false,
-      "system": false
+      "system": false,
+      "replicated": false
     }
   ]
 }

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/action/GetDataStreamAction.java

@@ -123,6 +123,7 @@ public static class DataStreamInfo extends AbstractDiffable<DataStreamInfo> impl
             public static final ParseField ILM_POLICY_FIELD = new ParseField("ilm_policy");
             public static final ParseField HIDDEN_FIELD = new ParseField("hidden");
             public static final ParseField SYSTEM_FIELD = new ParseField("system");
+            public static final ParseField REPLICATED = new ParseField("replicated");
 
             DataStream dataStream;
             ClusterHealthStatus dataStreamStatus;
@@ -192,6 +193,7 @@ public XContentBuilder toXContent(XContentBuilder builder, Params params) throws
                 }
                 builder.field(HIDDEN_FIELD.getPreferredName(), dataStream.isHidden());
                 builder.field(SYSTEM_FIELD.getPreferredName(), dataStream.isSystem());
+                builder.field(REPLICATED.getPreferredName(), dataStream.isReplicated());
                 builder.endObject();
                 return builder;
             }

x-pack/plugin/src/yamlRestTest/resources/rest-api-spec/test/data_stream/10_basic.yml

@@ -54,13 +54,15 @@ setup:
   - match: { data_streams.0.status: 'GREEN' }
   - match: { data_streams.0.template: 'my-template1' }
   - match: { data_streams.0.hidden: false }
+  - match: { data_streams.0.replicated: false }
   - match: { data_streams.1.name: simple-data-stream2 }
   - match: { data_streams.1.timestamp_field.name: '@timestamp' }
-  - match: { data_streams.0.generation: 1 }
+  - match: { data_streams.1.generation: 1 }
   - length: { data_streams.1.indices: 1 }
   - match: { data_streams.1.indices.0.index_name: '/\.ds-simple-data-stream2-(\d{4}\.\d{2}\.\d{2}-)?000001/' }
   - match: { data_streams.1.template: 'my-template2' }
-  - match: { data_streams.0.hidden: false }
+  - match: { data_streams.1.hidden: false }
+  - match: { data_streams.1.replicated: false }
 
   # save the backing index names for later use
   - set: { data_streams.0.indices.0.index_name: idx0name }