[Backport 2.x] Adding a state index

build.gradle

@@ -56,6 +56,7 @@ buildscript {
         opensearch_group = "org.opensearch"
         opensearch_no_snapshot = opensearch_build.replace("-SNAPSHOT","")
         System.setProperty('tests.security.manager', 'false')
+        common_utils_version = System.getProperty("common_utils.version", opensearch_build)
     }
 
     repositories {
@@ -135,6 +136,7 @@ dependencies {
     implementation 'org.junit.jupiter:junit-jupiter:5.10.0'
     implementation "com.google.guava:guava:32.1.3-jre"
     api group: 'org.opensearch', name:'opensearch-ml-client', version: "${opensearch_build}"
+    implementation "org.opensearch:common-utils:${common_utils_version}"
 
     configurations.all {
         resolutionStrategy {

src/main/java/org/opensearch/flowframework/FlowFrameworkPlugin.java

@@ -24,14 +24,13 @@
 import org.opensearch.core.xcontent.NamedXContentRegistry;
 import org.opensearch.env.Environment;
 import org.opensearch.env.NodeEnvironment;
-import org.opensearch.flowframework.indices.GlobalContextHandler;
+import org.opensearch.flowframework.indices.FlowFrameworkIndicesHandler;
 import org.opensearch.flowframework.rest.RestCreateWorkflowAction;
 import org.opensearch.flowframework.rest.RestProvisionWorkflowAction;
 import org.opensearch.flowframework.transport.CreateWorkflowAction;
 import org.opensearch.flowframework.transport.CreateWorkflowTransportAction;
 import org.opensearch.flowframework.transport.ProvisionWorkflowAction;
 import org.opensearch.flowframework.transport.ProvisionWorkflowTransportAction;
-import org.opensearch.flowframework.workflow.CreateIndexStep;
 import org.opensearch.flowframework.workflow.WorkflowProcessSorter;
 import org.opensearch.flowframework.workflow.WorkflowStepFactory;
 import org.opensearch.ml.client.MachineLearningNodeClient;
@@ -81,10 +80,9 @@ public Collection<Object> createComponents(
         WorkflowStepFactory workflowStepFactory = new WorkflowStepFactory(clusterService, client, mlClient);
         WorkflowProcessSorter workflowProcessSorter = new WorkflowProcessSorter(workflowStepFactory, threadPool);
 
-        // TODO : Refactor, move system index creation/associated methods outside of the CreateIndexStep
-        GlobalContextHandler globalContextHandler = new GlobalContextHandler(client, new CreateIndexStep(clusterService, client));
+        FlowFrameworkIndicesHandler flowFrameworkIndicesHandler = new FlowFrameworkIndicesHandler(client, clusterService);
 
-        return ImmutableList.of(workflowStepFactory, workflowProcessSorter, globalContextHandler);
+        return ImmutableList.of(workflowStepFactory, workflowProcessSorter, flowFrameworkIndicesHandler);
     }
 
     @Override

src/main/java/org/opensearch/flowframework/common/CommonValue.java

@@ -27,6 +27,13 @@ private CommonValue() {}
     public static final String GLOBAL_CONTEXT_INDEX_MAPPING = "mappings/global-context.json";
     /** Global Context index mapping version */
     public static final Integer GLOBAL_CONTEXT_INDEX_VERSION = 1;
+    /** Workflow State Index Name */
+    public static final String WORKFLOW_STATE_INDEX = ".plugins-workflow-state";
+    /** Workflow State index mapping file path */
+    public static final String WORKFLOW_STATE_INDEX_MAPPING = "mappings/workflow-state.json";
+    /** Workflow State index mapping version */
+    public static final Integer WORKFLOW_STATE_INDEX_VERSION = 1;
+
     /** The template field name for template use case */
     public static final String USE_CASE_FIELD = "use_case";
     /** The template field name for template version */
@@ -35,6 +42,8 @@ private CommonValue() {}
     public static final String COMPATIBILITY_FIELD = "compatibility";
     /** The template field name for template workflows */
     public static final String WORKFLOWS_FIELD = "workflows";
+    /** The template field name for the user who created the workflow **/
+    public static final String USER_FIELD = "user";
 
     /** The transport action name prefix */
     public static final String TRANSPORT_ACION_NAME_PREFIX = "cluster:admin/opensearch/flow_framework/";
@@ -86,4 +95,23 @@ private CommonValue() {}
     public static final String MODEL_ACCESS_MODE = "access_mode";
     /** Add all backend roles */
     public static final String ADD_ALL_BACKEND_ROLES = "add_all_backend_roles";
+
+    /** The template field name for the associated workflowID **/
+    public static final String WORKFLOW_ID_FIELD = "workflow_id";
+    /** The template field name for the workflow error **/
+    public static final String ERROR_FIELD = "error";
+    /** The template field name for the workflow state **/
+    public static final String STATE_FIELD = "state";
+    /** The template field name for the workflow provisioning progress **/
+    public static final String PROVISIONING_PROGRESS_FIELD = "provisioning_progress";
+    /** The template field name for the workflow provisioning start time **/
+    public static final String PROVISION_START_TIME_FIELD = "provision_start_time";
+    /** The template field name for the workflow provisioning end time **/
+    public static final String PROVISION_END_TIME_FIELD = "provision_end_time";
+    /** The template field name for the workflow ui metadata **/
+    public static final String UI_METADATA_FIELD = "ui_metadata";
+    /** The template field name for template user outputs */
+    public static final String USER_OUTPUTS_FIELD = "user_outputs";
+    /** The template field name for template resources created */
+    public static final String RESOURCES_CREATED_FIELD = "resources_created";
 }

src/main/java/org/opensearch/flowframework/indices/FlowFrameworkIndex.java

@@ -14,6 +14,8 @@
 
 import static org.opensearch.flowframework.common.CommonValue.GLOBAL_CONTEXT_INDEX;
 import static org.opensearch.flowframework.common.CommonValue.GLOBAL_CONTEXT_INDEX_VERSION;
+import static org.opensearch.flowframework.common.CommonValue.WORKFLOW_STATE_INDEX;
+import static org.opensearch.flowframework.common.CommonValue.WORKFLOW_STATE_INDEX_VERSION;
 
 /**
  * An enumeration of Flow Framework indices
@@ -24,8 +26,13 @@ public enum FlowFrameworkIndex {
     */
     GLOBAL_CONTEXT(
         GLOBAL_CONTEXT_INDEX,
-        ThrowingSupplierWrapper.throwingSupplierWrapper(GlobalContextHandler::getGlobalContextMappings),
+        ThrowingSupplierWrapper.throwingSupplierWrapper(FlowFrameworkIndicesHandler::getGlobalContextMappings),
         GLOBAL_CONTEXT_INDEX_VERSION
+    ),
+    WORKFLOW_STATE(
+        WORKFLOW_STATE_INDEX,
+        ThrowingSupplierWrapper.throwingSupplierWrapper(FlowFrameworkIndicesHandler::getWorkflowStateMappings),
+        WORKFLOW_STATE_INDEX_VERSION
     );
 
     private final String indexName;