Mark watcher NotMultiProjectCapable and replace deprecated multi-project methods

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/Watcher.java

@@ -21,6 +21,7 @@
 import org.elasticsearch.cluster.metadata.IndexMetadata;
 import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
 import org.elasticsearch.cluster.metadata.IndexTemplateMetadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.cluster.node.DiscoveryNode;
 import org.elasticsearch.cluster.node.DiscoveryNodes;
 import org.elasticsearch.cluster.service.ClusterService;
@@ -35,6 +36,7 @@
 import org.elasticsearch.common.unit.ByteSizeValue;
 import org.elasticsearch.common.util.concurrent.EsExecutors;
 import org.elasticsearch.core.IOUtils;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.core.UpdateForV10;
 import org.elasticsearch.env.Environment;
@@ -823,10 +825,11 @@ public String getFeatureName() {
     }
 
     @Override
+    @NotMultiProjectCapable(description = "Watcher is not available in serverless")
     public void prepareForIndicesMigration(ClusterService clusterService, Client client, ActionListener<Map<String, Object>> listener) {
         Client originClient = new OriginSettingClient(client, WATCHER_ORIGIN);
         boolean manuallyStopped = Optional.ofNullable(
-            clusterService.state().metadata().getProject().<WatcherMetadata>custom(WatcherMetadata.TYPE)
+            clusterService.state().metadata().getProject(ProjectId.DEFAULT).<WatcherMetadata>custom(WatcherMetadata.TYPE)
         ).map(WatcherMetadata::manuallyStopped).orElse(false);
 
         if (manuallyStopped == false) {

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/WatcherIndexingListener.java

@@ -14,6 +14,7 @@
 import org.elasticsearch.cluster.ClusterStateListener;
 import org.elasticsearch.cluster.block.ClusterBlockLevel;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.cluster.routing.AllocationId;
 import org.elasticsearch.cluster.routing.IndexRoutingTable;
 import org.elasticsearch.cluster.routing.Murmur3HashFunction;
@@ -22,6 +23,7 @@
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.util.Maps;
 import org.elasticsearch.common.util.set.Sets;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.index.engine.Engine;
 import org.elasticsearch.index.shard.IndexingOperationListener;
 import org.elasticsearch.index.shard.ShardId;
@@ -251,10 +253,12 @@ private void checkWatchIndexHasChanged(IndexMetadata metadata, ClusterChangedEve
      * @param event             The cluster changed event containing the new cluster state
      */
     private void reloadConfiguration(String watchIndex, List<ShardRouting> localShardRouting, ClusterChangedEvent event) {
+        @NotMultiProjectCapable(description = "Watcher is not available in serverless")
+        ProjectId projectId = ProjectId.DEFAULT;
         // changed alias means to always read a new configuration
         boolean isAliasChanged = watchIndex.equals(configuration.index) == false;
-        if (isAliasChanged || hasShardAllocationIdChanged(watchIndex, event.state())) {
-            IndexRoutingTable watchIndexRoutingTable = event.state().routingTable().index(watchIndex);
+        if (isAliasChanged || hasShardAllocationIdChanged(projectId, watchIndex, event.state())) {
+            IndexRoutingTable watchIndexRoutingTable = event.state().routingTable(projectId).index(watchIndex);
             Map<ShardId, ShardAllocationConfiguration> ids = getLocalShardAllocationIds(localShardRouting, watchIndexRoutingTable);
             configuration = new Configuration(watchIndex, ids);
         }
@@ -267,9 +271,9 @@ private void reloadConfiguration(String watchIndex, List<ShardRouting> localShar
      * @param state      The new cluster state
      * @return           true if the routing tables has changed and local shards are affected
      */
-    private boolean hasShardAllocationIdChanged(String watchIndex, ClusterState state) {
-        List<ShardRouting> allStartedRelocatedShards = state.getRoutingTable().index(watchIndex).shardsWithState(STARTED);
-        allStartedRelocatedShards.addAll(state.getRoutingTable().index(watchIndex).shardsWithState(RELOCATING));
+    private boolean hasShardAllocationIdChanged(ProjectId projectId, String watchIndex, ClusterState state) {
+        List<ShardRouting> allStartedRelocatedShards = state.routingTable(projectId).index(watchIndex).shardsWithState(STARTED);
+        allStartedRelocatedShards.addAll(state.routingTable(projectId).index(watchIndex).shardsWithState(RELOCATING));
 
         // exit early, when there are shards, but the current configuration is inactive
         if (allStartedRelocatedShards.isEmpty() == false && configuration == INACTIVE) {

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/WatcherLifeCycleService.java

@@ -13,12 +13,15 @@
 import org.elasticsearch.cluster.ClusterStateListener;
 import org.elasticsearch.cluster.block.ClusterBlockLevel;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.cluster.node.DiscoveryNode;
+import org.elasticsearch.cluster.routing.IndexRoutingTable;
 import org.elasticsearch.cluster.routing.RoutingNode;
 import org.elasticsearch.cluster.routing.ShardRouting;
 import org.elasticsearch.cluster.service.ClusterService;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.component.LifecycleListener;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.gateway.GatewayService;
 import org.elasticsearch.index.shard.ShardId;
 import org.elasticsearch.xpack.core.watcher.WatcherMetadata;
@@ -153,8 +156,11 @@ public void clusterChanged(ClusterChangedEvent event) {
         // also check if non local shards have changed, as loosing a shard on a
         // remote node or adding a replica on a remote node needs to trigger a reload too
         Set<ShardId> localShardIds = localShards.stream().map(ShardRouting::shardId).collect(Collectors.toSet());
-        List<ShardRouting> allShards = event.state().routingTable().index(watchIndex).shardsWithState(STARTED);
-        allShards.addAll(event.state().routingTable().index(watchIndex).shardsWithState(RELOCATING));
+
+        @NotMultiProjectCapable(description = "Watcher is not available in serverless")
+        IndexRoutingTable routingTable = event.state().routingTable(ProjectId.DEFAULT).index(watchIndex);
+        List<ShardRouting> allShards = routingTable.shardsWithState(STARTED);
+        allShards.addAll(routingTable.shardsWithState(RELOCATING));
         List<ShardRouting> localAffectedShardRoutings = allShards.stream()
             .filter(shardRouting -> localShardIds.contains(shardRouting.shardId()))
             // shardrouting is not comparable, so we need some order mechanism
@@ -192,8 +198,9 @@ private void pauseExecution(String reason) {
     /**
      * check if watcher has been stopped manually via the stop API
      */
+    @NotMultiProjectCapable(description = "Watcher is not available in serverless")
     private static boolean isWatcherStoppedManually(ClusterState state) {
-        WatcherMetadata watcherMetadata = state.getMetadata().getProject().custom(WatcherMetadata.TYPE);
+        WatcherMetadata watcherMetadata = state.getMetadata().getProject(ProjectId.DEFAULT).custom(WatcherMetadata.TYPE);
         return watcherMetadata != null && watcherMetadata.manuallyStopped();
     }
 

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/WatcherService.java

@@ -18,6 +18,7 @@
 import org.elasticsearch.client.internal.Client;
 import org.elasticsearch.cluster.ClusterState;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.cluster.routing.AllocationId;
 import org.elasticsearch.cluster.routing.Murmur3HashFunction;
 import org.elasticsearch.cluster.routing.Preference;
@@ -27,6 +28,7 @@
 import org.elasticsearch.common.util.Maps;
 import org.elasticsearch.common.util.concurrent.AbstractRunnable;
 import org.elasticsearch.common.util.concurrent.EsExecutors;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.builder.SearchSourceBuilder;
@@ -134,6 +136,8 @@ public class WatcherService {
      * @return true if everything is good to go, so that the service can be started
      */
     public boolean validate(ClusterState state) {
+        @NotMultiProjectCapable(description = "Watcher is not available in serverless")
+        ProjectId projectId = ProjectId.DEFAULT;
         IndexMetadata watcherIndexMetadata = WatchStoreUtils.getConcreteIndex(Watch.INDEX, state.metadata());
         IndexMetadata triggeredWatchesIndexMetadata = WatchStoreUtils.getConcreteIndex(
             TriggeredWatchStoreField.INDEX_NAME,
@@ -160,7 +164,7 @@ public boolean validate(ClusterState state) {
 
             return watcherIndexMetadata == null
                 || (watcherIndexMetadata.getState() == IndexMetadata.State.OPEN
-                    && state.routingTable().index(watcherIndexMetadata.getIndex()).allPrimaryShardsActive());
+                    && state.routingTable(projectId).index(watcherIndexMetadata.getIndex()).allPrimaryShardsActive());
         } catch (IllegalStateException e) {
             logger.warn("Validation error: cannot start watcher", e);
             return false;
@@ -329,7 +333,8 @@ private Collection<Watch> loadWatches(ClusterState clusterState) {
             List<ShardRouting> localShards = routingNode.shardsWithState(watchIndexName, RELOCATING, STARTED).toList();
 
             // find out all allocation ids
-            List<ShardRouting> watchIndexShardRoutings = clusterState.getRoutingTable().allShards(watchIndexName);
+            @NotMultiProjectCapable(description = "Watcher is not available in serverless")
+            List<ShardRouting> watchIndexShardRoutings = clusterState.routingTable(ProjectId.DEFAULT).allShards(watchIndexName);
 
             SearchRequest searchRequest = new SearchRequest(INDEX).scroll(scrollTimeout)
                 .preference(Preference.ONLY_LOCAL.toString())

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/execution/TriggeredWatchStore.java

@@ -24,8 +24,10 @@
 import org.elasticsearch.client.internal.Client;
 import org.elasticsearch.cluster.ClusterState;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.cluster.routing.Preference;
 import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.index.IndexNotFoundException;
 import org.elasticsearch.search.SearchHit;
@@ -183,10 +185,11 @@ public Collection<TriggeredWatch> findTriggeredWatches(Collection<Watch> watches
         return triggeredWatches;
     }
 
+    @NotMultiProjectCapable(description = "Watcher is not available in serverless")
     public static boolean validate(ClusterState state) {
         IndexMetadata indexMetadata = WatchStoreUtils.getConcreteIndex(TriggeredWatchStoreField.INDEX_NAME, state.metadata());
         return indexMetadata == null
             || (indexMetadata.getState() == IndexMetadata.State.OPEN
-                && state.routingTable().index(indexMetadata.getIndex()).allPrimaryShardsActive());
+                && state.routingTable(ProjectId.DEFAULT).index(indexMetadata.getIndex()).allPrimaryShardsActive());
     }
 }

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/history/HistoryStore.java

@@ -13,9 +13,11 @@
 import org.elasticsearch.action.index.IndexRequest;
 import org.elasticsearch.cluster.ClusterState;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.unit.ByteSizeValue;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.xcontent.XContentBuilder;
 import org.elasticsearch.xcontent.XContentFactory;
 import org.elasticsearch.xpack.core.watcher.history.HistoryStoreField;
@@ -91,10 +93,11 @@ public void forcePut(WatchRecord watchRecord) {
      * @param state The current cluster state
      * @return true, if history store is ready to be started
      */
+    @NotMultiProjectCapable(description = "Watcher is not available in serverless")
     public static boolean validate(ClusterState state) {
         IndexMetadata indexMetadata = WatchStoreUtils.getConcreteIndex(HistoryStoreField.DATA_STREAM, state.metadata());
         return indexMetadata == null
             || (indexMetadata.getState() == IndexMetadata.State.OPEN
-                && state.routingTable().index(indexMetadata.getIndex()).allPrimaryShardsActive());
+                && state.routingTable(ProjectId.DEFAULT).index(indexMetadata.getIndex()).allPrimaryShardsActive());
     }
 }

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/support/WatcherIndexTemplateRegistry.java

@@ -9,8 +9,10 @@
 import org.elasticsearch.client.internal.Client;
 import org.elasticsearch.cluster.ClusterState;
 import org.elasticsearch.cluster.metadata.ComposableIndexTemplate;
+import org.elasticsearch.cluster.metadata.ProjectId;
 import org.elasticsearch.cluster.service.ClusterService;
 import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.xcontent.NamedXContentRegistry;
 import org.elasticsearch.xpack.core.ilm.LifecyclePolicy;
@@ -89,9 +91,10 @@ protected String getOrigin() {
         return WATCHER_ORIGIN;
     }
 
+    @NotMultiProjectCapable(description = "Watcher is not available in serverless")
     public static boolean validate(ClusterState state) {
         return state.getMetadata()
-            .getProject()
+            .getProject(ProjectId.DEFAULT)
             .templatesV2()
             .keySet()
             .stream()

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/watch/WatchStoreUtils.java

@@ -9,6 +9,9 @@
 import org.elasticsearch.cluster.metadata.IndexAbstraction;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
 import org.elasticsearch.cluster.metadata.Metadata;
+import org.elasticsearch.cluster.metadata.ProjectId;
+import org.elasticsearch.cluster.metadata.ProjectMetadata;
+import org.elasticsearch.core.NotMultiProjectCapable;
 import org.elasticsearch.index.Index;
 import org.elasticsearch.index.IndexNotFoundException;
 
@@ -26,7 +29,9 @@ public class WatchStoreUtils {
      * @throws IndexNotFoundException If no index exists
      */
     public static IndexMetadata getConcreteIndex(String name, Metadata metadata) {
-        IndexAbstraction indexAbstraction = metadata.getProject().getIndicesLookup().get(name);
+        @NotMultiProjectCapable(description = "Watcher is not available in serverless")
+        ProjectMetadata projectMetadata = metadata.getProject(ProjectId.DEFAULT);
+        IndexAbstraction indexAbstraction = projectMetadata.getIndicesLookup().get(name);
         if (indexAbstraction == null) {
             return null;
         }
@@ -48,7 +53,7 @@ public static IndexMetadata getConcreteIndex(String name, Metadata metadata) {
         if (concreteIndex == null) {
             concreteIndex = indexAbstraction.getIndices().get(indexAbstraction.getIndices().size() - 1);
         }
-        return metadata.getProject().index(concreteIndex);
+        return projectMetadata.index(concreteIndex);
     }
 
 }