Add Create QueryGroup API Logic

CHANGELOG.md

@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add setting to ignore throttling nodes for allocation of unassigned primaries in remote restore ([#14991](https://github.com/opensearch-project/OpenSearch/pull/14991))
 - [Streaming Indexing] Enhance RestClient with a new streaming API support ([#14437](https://github.com/opensearch-project/OpenSearch/pull/14437))
 - Add basic aggregation support for derived fields ([#14618](https://github.com/opensearch-project/OpenSearch/pull/14618))
+- [Workload Management] Add Create QueryGroup API Logic ([#14680](https://github.com/opensearch-project/OpenSearch/pull/14680))- [Workload Management] Add Create QueryGroup API Logic ([#14680](https://github.com/opensearch-project/OpenSearch/pull/14680))
 - Add ThreadContextPermission for markAsSystemContext and allow core to perform the method ([#15016](https://github.com/opensearch-project/OpenSearch/pull/15016))
 - Add ThreadContextPermission for stashAndMergeHeaders and stashWithOrigin ([#15039](https://github.com/opensearch-project/OpenSearch/pull/15039))
 - [Concurrent Segment Search] Support composite aggregations with scripting ([#15072](https://github.com/opensearch-project/OpenSearch/pull/15072))

plugins/workload-management/build.gradle

@@ -0,0 +1,21 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+apply plugin: 'opensearch.yaml-rest-test'
+apply plugin: 'opensearch.internal-cluster-test'
+
+opensearchplugin {
+  description 'OpenSearch Workload Management Plugin.'
+  classname 'org.opensearch.plugin.wlm.WorkloadManagementPlugin'
+}
+
+dependencies {
+}

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/WorkloadManagementPlugin.java

@@ -0,0 +1,64 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.plugin.wlm;
+
+import org.opensearch.action.ActionRequest;
+import org.opensearch.cluster.metadata.IndexNameExpressionResolver;
+import org.opensearch.cluster.node.DiscoveryNodes;
+import org.opensearch.common.settings.ClusterSettings;
+import org.opensearch.common.settings.IndexScopedSettings;
+import org.opensearch.common.settings.Setting;
+import org.opensearch.common.settings.Settings;
+import org.opensearch.common.settings.SettingsFilter;
+import org.opensearch.core.action.ActionResponse;
+import org.opensearch.plugin.wlm.action.CreateQueryGroupAction;
+import org.opensearch.plugin.wlm.action.TransportCreateQueryGroupAction;
+import org.opensearch.plugin.wlm.rest.RestCreateQueryGroupAction;
+import org.opensearch.plugin.wlm.service.QueryGroupPersistenceService;
+import org.opensearch.plugins.ActionPlugin;
+import org.opensearch.plugins.Plugin;
+import org.opensearch.rest.RestController;
+import org.opensearch.rest.RestHandler;
+
+import java.util.List;
+import java.util.function.Supplier;
+
+/**
+ * Plugin class for WorkloadManagement
+ */
+public class WorkloadManagementPlugin extends Plugin implements ActionPlugin {
+
+    /**
+     * Default constructor
+     */
+    public WorkloadManagementPlugin() {}
+
+    @Override
+    public List<ActionHandler<? extends ActionRequest, ? extends ActionResponse>> getActions() {
+        return List.of(new ActionPlugin.ActionHandler<>(CreateQueryGroupAction.INSTANCE, TransportCreateQueryGroupAction.class));
+    }
+
+    @Override
+    public List<RestHandler> getRestHandlers(
+        Settings settings,
+        RestController restController,
+        ClusterSettings clusterSettings,
+        IndexScopedSettings indexScopedSettings,
+        SettingsFilter settingsFilter,
+        IndexNameExpressionResolver indexNameExpressionResolver,
+        Supplier<DiscoveryNodes> nodesInCluster
+    ) {
+        return List.of(new RestCreateQueryGroupAction());
+    }
+
+    @Override
+    public List<Setting<?>> getSettings() {
+        return List.of(QueryGroupPersistenceService.MAX_QUERY_GROUP_COUNT);
+    }
+}

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupAction.java

@@ -0,0 +1,36 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.plugin.wlm.action;
+
+import org.opensearch.action.ActionType;
+
+/**
+ * Transport action to create QueryGroup
+ *
+ * @opensearch.experimental
+ */
+public class CreateQueryGroupAction extends ActionType<CreateQueryGroupResponse> {
+
+    /**
+     * An instance of CreateQueryGroupAction
+     */
+    public static final CreateQueryGroupAction INSTANCE = new CreateQueryGroupAction();
+
+    /**
+     * Name for CreateQueryGroupAction
+     */
+    public static final String NAME = "cluster:admin/opensearch/wlm/query_group/_create";
+
+    /**
+     * Default constructor
+     */
+    private CreateQueryGroupAction() {
+        super(NAME, CreateQueryGroupResponse::new);
+    }
+}

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupRequest.java

@@ -0,0 +1,82 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.plugin.wlm.action;
+
+import org.opensearch.action.ActionRequest;
+import org.opensearch.action.ActionRequestValidationException;
+import org.opensearch.cluster.metadata.QueryGroup;
+import org.opensearch.common.UUIDs;
+import org.opensearch.core.common.io.stream.StreamInput;
+import org.opensearch.core.common.io.stream.StreamOutput;
+import org.opensearch.core.xcontent.XContentParser;
+import org.joda.time.Instant;
+
+import java.io.IOException;
+
+/**
+ * A request for create QueryGroup
+ * User input schema:
+ *  {
+ *    "name": "analytics",
+ *    "resiliency_mode": "enforced",
+ *    "resource_limits": {
+ *           "cpu" : 0.4,
+ *           "memory" : 0.2
+ *      }
+ *  }
+ *
+ * @opensearch.experimental
+ */
+public class CreateQueryGroupRequest extends ActionRequest {
+    private final QueryGroup queryGroup;
+
+    /**
+     * Constructor for CreateQueryGroupRequest
+     * @param queryGroup - A {@link QueryGroup} object
+     */
+    public CreateQueryGroupRequest(QueryGroup queryGroup) {
+        this.queryGroup = queryGroup;
+    }
+
+    /**
+     * Constructor for CreateQueryGroupRequest
+     * @param in - A {@link StreamInput} object
+     */
+    public CreateQueryGroupRequest(StreamInput in) throws IOException {
+        super(in);
+        queryGroup = new QueryGroup(in);
+    }
+
+    /**
+     * Generate a CreateQueryGroupRequest from XContent
+     * @param parser - A {@link XContentParser} object
+     */
+    public static CreateQueryGroupRequest fromXContent(XContentParser parser) throws IOException {
+        QueryGroup.Builder builder = QueryGroup.Builder.fromXContent(parser);
+        return new CreateQueryGroupRequest(builder._id(UUIDs.randomBase64UUID()).updatedAt(Instant.now().getMillis()).build());
+    }
+
+    @Override
+    public ActionRequestValidationException validate() {
+        return null;
+    }
+
+    @Override
+    public void writeTo(StreamOutput out) throws IOException {
+        super.writeTo(out);
+        queryGroup.writeTo(out);
+    }
+
+    /**
+     * QueryGroup getter
+     */
+    public QueryGroup getQueryGroup() {
+        return queryGroup;
+    }
+}

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupResponse.java

@@ -0,0 +1,74 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.plugin.wlm.action;
+
+import org.opensearch.cluster.metadata.QueryGroup;
+import org.opensearch.core.action.ActionResponse;
+import org.opensearch.core.common.io.stream.StreamInput;
+import org.opensearch.core.common.io.stream.StreamOutput;
+import org.opensearch.core.rest.RestStatus;
+import org.opensearch.core.xcontent.ToXContent;
+import org.opensearch.core.xcontent.ToXContentObject;
+import org.opensearch.core.xcontent.XContentBuilder;
+
+import java.io.IOException;
+
+/**
+ * Response for the create API for QueryGroup
+ *
+ * @opensearch.experimental
+ */
+public class CreateQueryGroupResponse extends ActionResponse implements ToXContent, ToXContentObject {
+    private final QueryGroup queryGroup;
+    private final RestStatus restStatus;
+
+    /**
+     * Constructor for CreateQueryGroupResponse
+     * @param queryGroup - The QueryGroup to be included in the response
+     * @param restStatus - The restStatus for the response
+     */
+    public CreateQueryGroupResponse(final QueryGroup queryGroup, RestStatus restStatus) {
+        this.queryGroup = queryGroup;
+        this.restStatus = restStatus;
+    }
+
+    /**
+     * Constructor for CreateQueryGroupResponse
+     * @param in - A {@link StreamInput} object
+     */
+    public CreateQueryGroupResponse(StreamInput in) throws IOException {
+        queryGroup = new QueryGroup(in);
+        restStatus = RestStatus.readFrom(in);
+    }
+
+    @Override
+    public void writeTo(StreamOutput out) throws IOException {
+        queryGroup.writeTo(out);
+        RestStatus.writeTo(out, restStatus);
+    }
+
+    @Override
+    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
+        return queryGroup.toXContent(builder, params);
+    }
+
+    /**
+     * queryGroup getter
+     */
+    public QueryGroup getQueryGroup() {
+        return queryGroup;
+    }
+
+    /**
+     * restStatus getter
+     */
+    public RestStatus getRestStatus() {
+        return restStatus;
+    }
+}

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportCreateQueryGroupAction.java

@@ -0,0 +1,57 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.plugin.wlm.action;
+
+import org.opensearch.action.support.ActionFilters;
+import org.opensearch.action.support.HandledTransportAction;
+import org.opensearch.common.inject.Inject;
+import org.opensearch.core.action.ActionListener;
+import org.opensearch.plugin.wlm.service.QueryGroupPersistenceService;
+import org.opensearch.tasks.Task;
+import org.opensearch.threadpool.ThreadPool;
+import org.opensearch.transport.TransportService;
+
+/**
+ * Transport action to create QueryGroup
+ *
+ * @opensearch.experimental
+ */
+public class TransportCreateQueryGroupAction extends HandledTransportAction<CreateQueryGroupRequest, CreateQueryGroupResponse> {
+
+    private final ThreadPool threadPool;
+    private final QueryGroupPersistenceService queryGroupPersistenceService;
+
+    /**
+     * Constructor for TransportCreateQueryGroupAction
+     *
+     * @param actionName - action name
+     * @param transportService - a {@link TransportService} object
+     * @param actionFilters - a {@link ActionFilters} object
+     * @param threadPool - a {@link ThreadPool} object
+     * @param queryGroupPersistenceService - a {@link QueryGroupPersistenceService} object
+     */
+    @Inject
+    public TransportCreateQueryGroupAction(
+        String actionName,
+        TransportService transportService,
+        ActionFilters actionFilters,
+        ThreadPool threadPool,
+        QueryGroupPersistenceService queryGroupPersistenceService
+    ) {
+        super(CreateQueryGroupAction.NAME, transportService, actionFilters, CreateQueryGroupRequest::new);
+        this.threadPool = threadPool;
+        this.queryGroupPersistenceService = queryGroupPersistenceService;
+    }
+
+    @Override
+    protected void doExecute(Task task, CreateQueryGroupRequest request, ActionListener<CreateQueryGroupResponse> listener) {
+        threadPool.executor(ThreadPool.Names.SAME)
+            .execute(() -> queryGroupPersistenceService.persistInClusterStateMetadata(request.getQueryGroup(), listener));
+    }
+}

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/**
+ * Package for the action classes of WorkloadManagementPlugin
+ */
+package org.opensearch.plugin.wlm.action;

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/**
+ * Base package for WorkloadManagementPlugin
+ */
+package org.opensearch.plugin.wlm;