[8.18] [Upgrade Assistant] [Core] Data streams readonly flow (#209562) (#210302)

# Backport

This will backport the following commits from `8.x` to `8.18`:
- [[Upgrade Assistant] [Core] Data streams readonly flow
(#209562)](#209562)

<!--- Backport version: 9.6.4 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Ahmad
Bamieh","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-02-09T16:45:18Z","message":"[Upgrade
Assistant] [Core] Data streams readonly flow (#209562)\n\n## Data
streams readonly flow\r\n\r\nImplement marking data streams as read only
in addition to the already\r\nexisting reindex
flow.\r\n\r\n---------\r\n\r\nCo-authored-by: Jean-Louis Leysens
<[email protected]>","sha":"9afc910ac4c31d90e993cfd7d06657a67a738fdc","branchLabelMapping":{"^v8.16.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","backport:skip","v9.0.0","v8.18.0","v8.19.0"],"title":"[Upgrade
Assistant] [Core] Data streams readonly
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Assistant] [Core] Data streams readonly flow (#209562)\n\n## Data
streams readonly flow\r\n\r\nImplement marking data streams as read only
in addition to the already\r\nexisting reindex
flow.\r\n\r\n---------\r\n\r\nCo-authored-by: Jean-Louis Leysens
<[email protected]>","sha":"9afc910ac4c31d90e993cfd7d06657a67a738fdc"}},"sourceBranch":"8.x","suggestedTargetBranches":["9.0","8.18"],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.18","label":"v8.18.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.19","label":"v8.19.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Author: Bamieh

x-pack/platform/plugins/private/upgrade_assistant/common/data_stream_types.ts

@@ -14,6 +14,7 @@ export interface DataStreamsActionMetadata {
   reindexRequired: boolean;
 }
 
+export type DataStreamResolutionType = 'readonly' | 'reindex';
 export interface DataStreamsAction {
   type: 'dataStream';
   metadata: DataStreamsActionMetadata;
@@ -34,21 +35,22 @@ export interface DataStreamMetadata {
 }
 
 export interface DataStreamReindexStatusResponse {
-  warnings?: DataStreamReindexWarning[];
-  reindexOp?: DataStreamReindexOperation;
+  warnings?: DataStreamMigrationWarning[];
+  migrationOp?: DataStreamMigrationOperation;
   hasRequiredPrivileges?: boolean;
 }
 
-export type DataStreamReindexWarningTypes = 'incompatibleDataStream';
+export type DataStreamWarningTypes = 'incompatibleDataStream' | 'affectExistingSetups';
 
-export interface DataStreamReindexWarning {
-  warningType: DataStreamReindexWarningTypes;
+export interface DataStreamMigrationWarning {
+  warningType: DataStreamWarningTypes;
+  resolutionType: DataStreamResolutionType;
   meta?: {
     [key: string]: string | string[];
   };
 }
 
-export enum DataStreamReindexStatus {
+export enum DataStreamMigrationStatus {
   notStarted,
   inProgress,
   completed,
@@ -66,31 +68,31 @@ export interface DataStreamProgressDetails {
 }
 
 export interface DataStreamReindexStatusNotStarted {
-  status: DataStreamReindexStatus.notStarted;
+  status: DataStreamMigrationStatus.notStarted;
 }
 
 export interface DataStreamReindexStatusInProgress {
-  status: DataStreamReindexStatus.inProgress;
-  reindexTaskPercComplete: number;
+  status: DataStreamMigrationStatus.inProgress;
+  taskPercComplete: number;
   progressDetails: DataStreamProgressDetails;
 }
 
 export interface DataStreamReindexStatusCompleted {
-  status: DataStreamReindexStatus.completed;
-  reindexTaskPercComplete: number;
+  status: DataStreamMigrationStatus.completed;
+  taskPercComplete: number;
   progressDetails: DataStreamProgressDetails;
 }
 
 export interface DataStreamReindexStatusFailed {
-  status: DataStreamReindexStatus.failed;
+  status: DataStreamMigrationStatus.failed;
   errorMessage: string;
 }
 
 export interface DataStreamReindexStatusCancelled {
-  status: DataStreamReindexStatus.cancelled;
+  status: DataStreamMigrationStatus.cancelled;
 }
 
-export type DataStreamReindexOperation =
+export type DataStreamMigrationOperation =
   | DataStreamReindexStatusNotStarted
   | DataStreamReindexStatusInProgress
   | DataStreamReindexStatusCompleted

x-pack/platform/plugins/private/upgrade_assistant/public/application/components/es_deprecations/deprecation_types/data_streams/context.tsx

@@ -8,22 +8,31 @@
 import React, { createContext, useContext } from 'react';
 
 import { ApiService } from '../../../../lib/api';
-import { useReindexStatus, ReindexState } from './use_reindex_state';
+import { useMigrationStatus, MigrationState } from './use_migration_state';
+import type { DataStreamResolutionType } from '../../../../../../common/types';
 
-export interface ReindexStateContext {
-  reindexState: ReindexState;
-  startReindex: () => Promise<void>;
+export interface MigrationStateContext {
   loadDataStreamMetadata: () => Promise<void>;
+  migrationState: MigrationState;
+
+  initMigration: (resolutionType: DataStreamResolutionType) => void;
+
+  // reindex resolution actions
+  startReindex: () => Promise<void>;
   cancelReindex: () => Promise<void>;
+
+  // readonly resolution actions
+  startReadonly: () => Promise<void>;
+  cancelReadonly: () => Promise<void>;
 }
 
-const DataStreamReindexContext = createContext<ReindexStateContext | undefined>(undefined);
+const DataStreamMigrationContext = createContext<MigrationStateContext | undefined>(undefined);
 
-export const useDataStreamReindexContext = () => {
-  const context = useContext(DataStreamReindexContext);
+export const useDataStreamMigrationContext = () => {
+  const context = useContext(DataStreamMigrationContext);
   if (context === undefined) {
     throw new Error(
-      'useDataStreamReindexContext must be used within a <DataStreamReindexStatusProvider />'
+      'useDataStreamMigrationContext must be used within a <DataStreamMigrationStatusProvider />'
     );
   }
   return context;
@@ -35,26 +44,37 @@ interface Props {
   dataStreamName: string;
 }
 
-export const DataStreamReindexStatusProvider: React.FunctionComponent<Props> = ({
+export const DataStreamMigrationStatusProvider: React.FunctionComponent<Props> = ({
   api,
   dataStreamName,
   children,
 }) => {
-  const { reindexState, startReindex, loadDataStreamMetadata, cancelReindex } = useReindexStatus({
+  const {
+    migrationState,
+    cancelReadonly,
+    startReindex,
+    loadDataStreamMetadata,
+    cancelReindex,
+    startReadonly,
+    initMigration,
+  } = useMigrationStatus({
     dataStreamName,
     api,
   });
 
   return (
-    <DataStreamReindexContext.Provider
+    <DataStreamMigrationContext.Provider
       value={{
-        reindexState,
+        migrationState,
         startReindex,
         cancelReindex,
+        startReadonly,
+        cancelReadonly,
+        initMigration,
         loadDataStreamMetadata,
       }}
     >
       {children}
-    </DataStreamReindexContext.Provider>
+    </DataStreamMigrationContext.Provider>
   );
 };