Deprecated xpack "enable" settings should be no-ops (#55416)

The following settings are now no-ops:

* xpack.flattened.enabled
* xpack.logstash.enabled
* xpack.rollup.enabled
* xpack.slm.enabled
* xpack.sql.enabled
* xpack.transform.enabled
* xpack.vectors.enabled

Since these settings no longer need to be checked, we can remove settings
parameters from a number of constructors and methods, and do so in this
commit.

We also update documentation to remove references to these settings.

Author: williamrandolph

docs/reference/migration/migrate_8_0/settings.asciidoc

@@ -72,8 +72,15 @@ removed.
 In Elasticsearch 7.8.0, the following settings no longer have any effect, and
 have been deprecated:
 
+* `xpack.enrich.enabled`
+* `xpack.flattened.enabled`
 * `xpack.ilm.enabled`
 * `xpack.monitoring.enabled`
+* `xpack.rollup.enabled`
+* `xpack.slm.enabled`
+* `xpack.sql.enabled`
+* `xpack.transform.enabled`
+* `xpack.vectors.enabled`
 
 Previously, these settings could be set to `false` in order to disable the
 feature's APIs in a cluster. As of 7.8.0, these basic license features are
@@ -83,20 +90,6 @@ If you have disabled ILM so that you can use another tool to manage Watcher
 indices, the newly introduced `xpack.watcher.use_ilm_index_management` setting
 may be set to false.
 
-Additionally, the following settings have been deprecated without removing
-their effects:
-
-* `xpack.enrich.enabled`
-* `xpack.flattened.enabled`
-* `xpack.rollup.enabled`
-* `xpack.slm.enabled`
-* `xpack.sql.enabled`
-* `xpack.transform.enabled`
-* `xpack.vectors.enabled`
-
-In future releases, it will not be possible to disable the APIs for Enrichment,
-Flattened mappings, Rollup, SLM, SQL, Transforms, and Vectors.
-
 [float]
 ==== The `prefer_v2_templates` parameter now defaults to `true`
 

docs/reference/modules/node.asciidoc

@@ -404,12 +404,9 @@ node.remote_cluster_client: false <8>
 
 {transform-cap} nodes run {transforms} and handle {transform} API requests.
 
-If you want to use {transforms} in your cluster, you must not have
-`xpack.transform.enabled` set to `false` on any master-eligible or data
-nodes. To use {transforms} in clients (including {kib}), do not disable this
-setting on any coordinating nodes. You must also have `node.transform` set to
-`true` on at least one node. This is the default behavior. If you have the
-{oss-dist}, do not use these settings. For more information, see
+If you want to use {transforms} in your cluster, you must have `node.transform`
+set to `true` on at least one node. This is the default behavior. If you have
+the {oss-dist}, do not use these settings. For more information, see
 <<transform-settings>>.
 
 To create a dedicated {transform} node in the {default-dist}, set:

docs/reference/settings/sql-settings.asciidoc

@@ -5,12 +5,11 @@
 <titleabbrev>SQL access settings</titleabbrev>
 ++++
 
-SQL Access is enabled by default. You can configure
-these SQL Access settings in the `elasticsearch.yml` file.
+SQL Access is always enabled.
 
 [float]
 [[general-sql-settings]]
 ==== General SQL Access Settings
 `xpack.sql.enabled`::
 deprecated:[7.8.0,Basic License features should always be enabled] +
-Set to `false` to disable SQL Access on the node.
+This deprecated setting no longer has any effect.

docs/reference/settings/transform-settings.asciidoc

@@ -21,34 +21,20 @@ file.
 ==== General {transforms} settings
 
 `node.transform`::
-Set to `true` to identify the node as a _transform node_. If either `node.data`
-or `xpack.transform.enabled` is `false` for the node, the default value is
-`false`. Otherwise, the default value is `true`.
+Set to `true` to identify the node as a _transform node_. If `node.data`
+is `false` for the node, the default value is `false`. Otherwise, the default
+value is `true`.
 +
-If set to `false` in `elasticsearch.yml`, the node cannot run transforms. If set to
-`true` but `xpack.transform.enabled` is set to `false`, the `node.transform` setting is
-ignored and the node cannot run transforms. If you want to run transforms, there must be at
-least one transform node in your cluster. +
+If set to `false` in `elasticsearch.yml`, the node cannot run transforms. If
+you want to run transforms, there must be at least one transform node in your
+cluster. +
 +
-IMPORTANT: It is advised to use the `node.transform` setting to constrain the execution
-of transforms to certain nodes instead of using `xpack.transform.enabled`. On dedicated
-coordinating nodes or dedicated master nodes, disable the node.transform role.
+IMPORTANT: On dedicated coordinating nodes or dedicated master nodes, disable
+the node.transform role.
 
 `xpack.transform.enabled`::
 deprecated:[7.8.0,Basic License features should always be enabled] +
-Set to `true` (default) to enable {transforms} on the node.
-+
-If set to `false` in `elasticsearch.yml`, the {transform} APIs are disabled on
-the node. Therefore the node cannot start or administrate {transforms} or
-receive transport (internal) communication requests related to {transform} APIs.
-If the node is a coordinating node, {transform} requests from clients (including
-{kib}) also fail.
-+
-IMPORTANT: If you want to use {transform} features in your cluster, it is
-recommended that you set `xpack.transform.enabled` to `true` on all nodes. This
-is the default behavior. At a minimum, it must be enabled on all master-eligible
-nodes and all data nodes. If you want to use {transforms} in clients or {kib},
-it must also be enabled on all coordinating nodes.
+This deprecated setting no longer has any effect.
 
 `xpack.transform.num_transform_failure_retries` (<<cluster-update-settings,Dynamic>>)::
 The number of times that a {transform} retries when it experiences a

docs/reference/transform/setup.asciidoc

@@ -16,9 +16,8 @@ To use the {transforms}, you must have the
 ==== {transform-cap} nodes
 
 To use {transforms}, there must be at least one node in your cluster with
-`xpack.transform.enabled` and `node.transform` set to `true`. By default, all
-nodes are {transform} nodes unless you explicitly change these settings or set 
-`node.data` to `false`.
+`node.transform` set to `true`. By default, all nodes are {transform} nodes
+unless you explicitly change these settings or set `node.data` to `false`.
 
 If you want to control which nodes run {transforms}, set `node.transform` to
 `false` on some nodes.
@@ -35,14 +34,14 @@ which users can manage or view {transforms}.
 
 To _view_ the configuration and status of {transforms}, you must have:
 
-* `transform_user` built-in role or `monitor_transform` 
+* `transform_user` built-in role or `monitor_transform`
 cluster privileges
 
 To _manage_ {transforms}, you must have:
 
-* `transform_admin` built-in role or `manage_transform` 
+* `transform_admin` built-in role or `manage_transform`
 cluster privileges
 * `read` and `view_index_metadata` index privileges on source indices
 * `read`, `create_index`, and `index` index privileges on destination indices
-  
-For more information, see <<security-privileges>> and <<built-in-roles>>.
+
+For more information, see <<security-privileges>> and <<built-in-roles>>.

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

@@ -39,7 +39,10 @@ private XPackSettings() {
 
     /**
      * Setting for controlling whether or not enrich is enabled.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
      */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> ENRICH_ENABLED_SETTING = Setting.boolSetting("xpack.enrich.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
@@ -48,7 +51,12 @@ private XPackSettings() {
      */
     public static final Setting<Boolean> CCR_ENABLED_SETTING = Setting.boolSetting("xpack.ccr.enabled", true, Property.NodeScope);
 
-    /** Setting for enabling or disabling data frame. Defaults to true. */
+    /**
+     * Setting for enabling or disabling data frame. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
+     */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> TRANSFORM_ENABLED = Setting.boolSetting("xpack.transform.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
@@ -74,7 +82,12 @@ private XPackSettings() {
     public static final Setting<Boolean> MACHINE_LEARNING_ENABLED = Setting.boolSetting("xpack.ml.enabled", true,
             Setting.Property.NodeScope);
 
-    /** Setting for enabling or disabling rollup. Defaults to true. */
+    /**
+     * Setting for enabling or disabling rollup. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
+     */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> ROLLUP_ENABLED = Setting.boolSetting("xpack.rollup.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
@@ -86,7 +99,12 @@ private XPackSettings() {
     public static final Setting<Boolean> DLS_FLS_ENABLED = Setting.boolSetting("xpack.security.dls_fls.enabled", true,
             Setting.Property.NodeScope);
 
-    /** Setting for enabling or disabling Logstash extensions. Defaults to true. */
+    /**
+     * Setting for enabling or disabling Logstash extensions. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
+     */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> LOGSTASH_ENABLED = Setting.boolSetting("xpack.logstash.enabled", true,
             Setting.Property.NodeScope, Property.Deprecated);
 
@@ -101,7 +119,10 @@ private XPackSettings() {
 
     /**
      * Setting for enabling or disabling the snapshot lifecycle extension. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
      */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> SNAPSHOT_LIFECYCLE_ENABLED = Setting.boolSetting("xpack.slm.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
@@ -129,15 +150,30 @@ private XPackSettings() {
     public static final Setting<Boolean> FIPS_MODE_ENABLED =
         Setting.boolSetting("xpack.security.fips_mode.enabled", false, Property.NodeScope);
 
-    /** Setting for enabling or disabling sql. Defaults to true. */
+    /**
+     * Setting for enabling or disabling sql. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
+     */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> SQL_ENABLED = Setting.boolSetting("xpack.sql.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
-    /** Setting for enabling or disabling flattened fields. Defaults to true. */
+    /**
+     * Setting for enabling or disabling flattened fields. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
+     */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> FLATTENED_ENABLED = Setting.boolSetting("xpack.flattened.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
-    /** Setting for enabling or disabling vectors. Defaults to true. */
+    /**
+     * Setting for enabling or disabling vectors. Defaults to true.
+     * <p>
+     * This setting is now a no-op: setting it to false is permitted, but does nothing.
+     */
+    @Deprecated(since = "7.8.0")
     public static final Setting<Boolean> VECTORS_ENABLED = Setting.boolSetting("xpack.vectors.enabled", true,
         Property.NodeScope, Property.Deprecated);
 
@@ -256,6 +292,7 @@ public static List<Setting<?>> getAllSettings() {
         settings.add(TRANSFORM_ENABLED);
         settings.add(FLATTENED_ENABLED);
         settings.add(VECTORS_ENABLED);
+        settings.add(ENRICH_ENABLED_SETTING);
         return Collections.unmodifiableList(settings);
     }
 

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/enrich/EnrichFeatureSetUsage.java

@@ -15,8 +15,8 @@
 
 public class EnrichFeatureSetUsage extends XPackFeatureSet.Usage {
 
-    public EnrichFeatureSetUsage(boolean available, boolean enabled) {
-        super(XPackField.ENRICH, available, enabled);
+    public EnrichFeatureSetUsage(boolean available) {
+        super(XPackField.ENRICH, available, true);
     }
 
     public EnrichFeatureSetUsage(StreamInput input) throws IOException {

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/flattened/FlattenedFeatureSetUsage.java

@@ -28,8 +28,8 @@ public FlattenedFeatureSetUsage(StreamInput input) throws IOException {
         this.fieldCount = input.getVersion().onOrAfter(Version.V_7_6_0) ? input.readInt() : 0;
     }
 
-    public FlattenedFeatureSetUsage(boolean available, boolean enabled, int fieldCount) {
-        super(XPackField.FLATTENED, available, enabled);
+    public FlattenedFeatureSetUsage(boolean available, int fieldCount) {
+        super(XPackField.FLATTENED, available, true);
         this.fieldCount = fieldCount;
     }
 

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/logstash/LogstashFeatureSetUsage.java

@@ -18,8 +18,8 @@ public LogstashFeatureSetUsage(StreamInput in) throws IOException {
         super(in);
     }
 
-    public LogstashFeatureSetUsage(boolean available, boolean enabled) {
-        super(XPackField.LOGSTASH, available, enabled);
+    public LogstashFeatureSetUsage(boolean available) {
+        super(XPackField.LOGSTASH, available, true);
     }
 
     @Override

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/rollup/RollupFeatureSetUsage.java

@@ -18,8 +18,8 @@ public RollupFeatureSetUsage(StreamInput input) throws IOException {
         super(input);
     }
 
-    public RollupFeatureSetUsage(boolean available, boolean enabled) {
-        super(XPackField.ROLLUP, available, enabled);
+    public RollupFeatureSetUsage(boolean available) {
+        super(XPackField.ROLLUP, available, true);
     }
 
     @Override

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/slm/SLMFeatureSetUsage.java

@@ -33,8 +33,8 @@ public void writeTo(StreamOutput out) throws IOException {
         out.writeOptionalWriteable(this.slmStats);
     }
 
-    public SLMFeatureSetUsage(boolean available, boolean enabled, @Nullable SnapshotLifecycleStats slmStats) {
-        super(XPackField.SNAPSHOT_LIFECYCLE, available, enabled);
+    public SLMFeatureSetUsage(boolean available, @Nullable SnapshotLifecycleStats slmStats) {
+        super(XPackField.SNAPSHOT_LIFECYCLE, available, true);
         this.slmStats = slmStats;
     }
 

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/sql/SqlFeatureSetUsage.java

@@ -25,8 +25,8 @@ public SqlFeatureSetUsage(StreamInput in) throws IOException {
         stats = in.readMap();
     }
 
-    public SqlFeatureSetUsage(boolean available, boolean enabled, Map<String, Object> stats) {
-        super(XPackField.SQL, available, enabled);
+    public SqlFeatureSetUsage(boolean available, Map<String, Object> stats) {
+        super(XPackField.SQL, available, true);
         this.stats = stats;
     }
 

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/transform/TransformFeatureSetUsage.java

@@ -31,9 +31,9 @@ public TransformFeatureSetUsage(StreamInput in) throws IOException {
         this.accumulatedStats = new TransformIndexerStats(in);
     }
 
-    public TransformFeatureSetUsage(boolean available, boolean enabled, Map<String, Long> transformCountByState,
+    public TransformFeatureSetUsage(boolean available, Map<String, Long> transformCountByState,
             TransformIndexerStats accumulatedStats) {
-        super(XPackField.TRANSFORM, available, enabled);
+        super(XPackField.TRANSFORM, available, true);
         this.transformCountByState = Objects.requireNonNull(transformCountByState);
         this.accumulatedStats = Objects.requireNonNull(accumulatedStats);
     }

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/vectors/VectorsFeatureSetUsage.java

@@ -47,8 +47,8 @@ public Version getMinimalSupportedVersion() {
         return Version.V_7_3_0;
     }
 
-    public VectorsFeatureSetUsage(boolean available, boolean enabled, int numDenseVectorFields, int avgDenseVectorDims) {
-        super(XPackField.VECTORS, available, enabled);
+    public VectorsFeatureSetUsage(boolean available, int numDenseVectorFields, int avgDenseVectorDims) {
+        super(XPackField.VECTORS, available, true);
         this.numDenseVectorFields = numDenseVectorFields;
         this.avgDenseVectorDims = avgDenseVectorDims;
     }

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/flattened/FlattenedFeatureSetUsageTests.java

@@ -20,29 +20,25 @@ public void testFlattenedIsRemovedInNextMajor() {
 
     @Override
     protected FlattenedFeatureSetUsage createTestInstance() {
-        return new FlattenedFeatureSetUsage(randomBoolean(), randomBoolean(), randomIntBetween(0, 1000));
+        return new FlattenedFeatureSetUsage(randomBoolean(), randomIntBetween(0, 1000));
     }
 
     @Override
     protected FlattenedFeatureSetUsage mutateInstance(FlattenedFeatureSetUsage instance) throws IOException {
 
         boolean available = instance.available();
-        boolean enabled = instance.enabled();
         int fieldCount = instance.fieldCount();
 
-        switch (between(0, 2)) {
+        switch (between(0, 1)) {
             case 0:
                 available = !available;
                 break;
             case 1:
-                enabled = !enabled;
-                break;
-            case 2:
                 fieldCount = randomValueOtherThan(instance.fieldCount(), () -> randomIntBetween(0, 1000));
                 break;
         }
 
-        return new FlattenedFeatureSetUsage(available, enabled, fieldCount);
+        return new FlattenedFeatureSetUsage(available, fieldCount);
     }
 
     @Override

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/transform/TransformFeatureSetUsageTests.java

@@ -24,8 +24,7 @@ protected TransformFeatureSetUsage createTestInstance() {
             transformCountByState.put(randomFrom(IndexerState.values()).toString(), randomLong());
         }
 
-        return new TransformFeatureSetUsage(randomBoolean(), randomBoolean(), transformCountByState,
-                TransformIndexerStatsTests.randomStats());
+        return new TransformFeatureSetUsage(randomBoolean(), transformCountByState, TransformIndexerStatsTests.randomStats());
     }
 
     @Override