[index_pattern_management]: Replace calls to /elasticsearch/_msearch with internal route.

src/plugins/index_pattern_management/public/components/field_editor/components/scripting_help/test_script.tsx

@@ -81,7 +81,7 @@ export class TestScript extends Component<TestScriptProps, TestScriptState> {
   }
 
   previewScript = async (searchContext?: { query?: Query | undefined }) => {
-    const { indexPattern, lang, name, script, executeScript } = this.props;
+    const { indexPattern, name, script, executeScript } = this.props;
 
     if (!script || script.length === 0) {
       return;
@@ -104,7 +104,6 @@ export class TestScript extends Component<TestScriptProps, TestScriptState> {
 
     const scriptResponse = await executeScript({
       name: name as string,
-      lang,
       script,
       indexPatternTitle: indexPattern.title,
       query,
@@ -122,7 +121,7 @@ export class TestScript extends Component<TestScriptProps, TestScriptState> {
 
     this.setState({
       isLoading: false,
-      previewData: scriptResponse.hits.hits.map((hit: any) => ({
+      previewData: scriptResponse.hits?.hits.map((hit: any) => ({
         _id: hit._id,
         ...hit._source,
         ...hit.fields,

src/plugins/index_pattern_management/public/components/field_editor/field_editor.tsx

@@ -784,7 +784,6 @@ export class FieldEditor extends PureComponent<FieldEdiorProps, FieldEditorState
 
       const isValid = await isScriptValid({
         name: field.name,
-        lang: field.lang as string,
         script: field.script as string,
         indexPatternTitle: indexPattern.title,
         http: this.context.services.http,

src/plugins/index_pattern_management/public/components/field_editor/lib/validate_script.ts

@@ -17,72 +17,50 @@
  * under the License.
  */
 
-import { Query } from 'src/plugins/data/public';
 import { HttpStart } from 'src/core/public';
 import { ExecuteScriptParams, ExecuteScriptResult } from '../types';
 
 export const executeScript = async ({
   name,
-  lang,
   script,
   indexPatternTitle,
   query,
   additionalFields = [],
   http,
 }: ExecuteScriptParams): Promise<ExecuteScriptResult> => {
-  // Using _msearch because _search with index name in path dorks everything up
-  const header = {
-    index: indexPatternTitle,
-    ignore_unavailable: true,
-  };
-
-  const search = {
-    query: {
-      match_all: {},
-    } as Query['query'],
-    script_fields: {
-      [name]: {
-        script: {
-          lang,
-          source: script,
-        },
-      },
-    },
-    _source: undefined as string[] | undefined,
-    size: 10,
-    timeout: '30s',
-  };
-
-  if (additionalFields.length > 0) {
-    search._source = additionalFields;
-  }
-
-  if (query) {
-    search.query = query;
-  }
-
-  const body = `${JSON.stringify(header)}\n${JSON.stringify(search)}\n`;
-  const esResp = await http.fetch('/elasticsearch/_msearch', { method: 'POST', body });
-  // unwrap _msearch response
-  return esResp.responses[0];
+  return http
+    .post('/internal/index-pattern-management/preview_scripted_field', {
+      body: JSON.stringify({
+        index: indexPatternTitle,
+        name,
+        script,
+        query,
+        additionalFields,
+      }),
+    })
+    .then((res) => ({
+      status: res.statusCode,
+      hits: res.body.hits,
+    }))
+    .catch((err) => ({
+      status: err.statusCode,
+      error: err.body.attributes.error,
+    }));
 };
 
 export const isScriptValid = async ({
   name,
-  lang,
   script,
   indexPatternTitle,
   http,
 }: {
   name: string;
-  lang: string;
   script: string;
   indexPatternTitle: string;
   http: HttpStart;
 }) => {
   const scriptResponse = await executeScript({
     name,
-    lang,
     script,
     indexPatternTitle,
     http,

src/plugins/index_pattern_management/public/components/field_editor/types.ts

@@ -28,7 +28,6 @@ export interface Sample {
 
 export interface ExecuteScriptParams {
   name: string;
-  lang: string;
   script: string;
   indexPatternTitle: string;
   query?: Query['query'];
@@ -38,7 +37,7 @@ export interface ExecuteScriptParams {
 
 export interface ExecuteScriptResult {
   status: number;
-  hits: { hits: any[] };
+  hits?: { hits: any[] };
   error?: any;
 }
 

src/plugins/index_pattern_management/server/plugin.ts

@@ -18,50 +18,17 @@
  */
 
 import { PluginInitializerContext, CoreSetup, Plugin } from 'src/core/server';
-import { schema } from '@kbn/config-schema';
+
+import { registerPreviewScriptedFieldRoute, registerResolveIndexRoute } from './routes';
 
 export class IndexPatternManagementPlugin implements Plugin<void, void> {
   constructor(initializerContext: PluginInitializerContext) {}
 
   public setup(core: CoreSetup) {
     const router = core.http.createRouter();
 
-    router.get(
-      {
-        path: '/internal/index-pattern-management/resolve_index/{query}',
-        validate: {
-          params: schema.object({
-            query: schema.string(),
-          }),
-          query: schema.object({
-            expand_wildcards: schema.maybe(
-              schema.oneOf([
-                schema.literal('all'),
-                schema.literal('open'),
-                schema.literal('closed'),
-                schema.literal('hidden'),
-                schema.literal('none'),
-              ])
-            ),
-          }),
-        },
-      },
-      async (context, req, res) => {
-        const queryString = req.query.expand_wildcards
-          ? { expand_wildcards: req.query.expand_wildcards }
-          : null;
-        const result = await context.core.elasticsearch.legacy.client.callAsCurrentUser(
-          'transport.request',
-          {
-            method: 'GET',
-            path: `/_resolve/index/${encodeURIComponent(req.params.query)}${
-              queryString ? '?' + new URLSearchParams(queryString).toString() : ''
-            }`,
-          }
-        );
-        return res.ok({ body: result });
-      }
-    );
+    registerPreviewScriptedFieldRoute(router);
+    registerResolveIndexRoute(router);
   }
 
   public start() {}

src/plugins/index_pattern_management/server/routes/index.ts

@@ -0,0 +1,21 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+export * from './preview_scripted_field';
+export * from './resolve_index';