[7.x] move createGetterSetter to plugins/kibana_utils (#49069)

src/legacy/core_plugins/data/public/index_patterns/services.ts

@@ -18,21 +18,7 @@
  */
 
 import { NotificationsStart } from 'src/core/public';
-
-const createGetterSetter = <T extends object>(name: string): [() => T, (value: T) => void] => {
-  let value: T;
-
-  const get = (): T => {
-    if (!value) throw new Error(`${name} was not set`);
-    return value;
-  };
-
-  const set = (newValue: T) => {
-    value = newValue;
-  };
-
-  return [get, set];
-};
+import { createGetterSetter } from '../../../../../plugins/kibana_utils/public';
 
 export const [getNotifications, setNotifications] = createGetterSetter<NotificationsStart>(
   'Notifications'

src/legacy/core_plugins/expressions/public/np_ready/public/services.ts

@@ -17,25 +17,11 @@
  * under the License.
  */
 
+import { createGetterSetter } from '../../../../../../plugins/kibana_utils/public';
 import { IInterpreter } from './types';
 import { Start as IInspector } from '../../../../../../plugins/inspector/public';
 import { ExpressionsSetup } from './plugin';
 
-const createGetterSetter = <T extends object>(name: string): [() => T, (value: T) => void] => {
-  let value: T;
-
-  const get = (): T => {
-    if (!value) throw new Error(`${name} was not set`);
-    return value;
-  };
-
-  const set = (newValue: T) => {
-    value = newValue;
-  };
-
-  return [get, set];
-};
-
 export const [getInspector, setInspector] = createGetterSetter<IInspector>('Inspector');
 export const [getInterpreter, setInterpreter] = createGetterSetter<IInterpreter>('Interpreter');
 export const [getRenderersRegistry, setRenderersRegistry] = createGetterSetter<

src/plugins/kibana_utils/public/core/create_getter_setter.ts

@@ -0,0 +1,36 @@
+/*
+ * 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 type Get<T> = () => T;
+export type Set<T> = (value: T) => void;
+
+export const createGetterSetter = <T extends object>(name: string): [Get<T>, Set<T>] => {
+  let value: T;
+
+  const get: Get<T> = () => {
+    if (!value) throw new Error(`${name} was not set.`);
+    return value;
+  };
+
+  const set: Set<T> = newValue => {
+    value = newValue;
+  };
+
+  return [get, set];
+};

src/plugins/kibana_utils/public/core/create_kibana_utils_core.test.ts

@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+
+import { createKibanaUtilsCore } from './create_kibana_utils_core';
+import { CoreStart } from 'kibana/public';
+
+describe('createKibanaUtilsCore', () => {
+  it('should allows to work with multiple instances', () => {
+    const core1 = {} as CoreStart;
+    const core2 = {} as CoreStart;
+
+    const { setCoreStart: setCoreStart1, getCoreStart: getCoreStart1 } = createKibanaUtilsCore();
+    const { setCoreStart: setCoreStart2, getCoreStart: getCoreStart2 } = createKibanaUtilsCore();
+
+    setCoreStart1(core1);
+    setCoreStart2(core2);
+
+    expect(getCoreStart1()).toBe(core1);
+    expect(getCoreStart2()).toBe(core2);
+
+    expect(getCoreStart1() !== getCoreStart2()).toBeTruthy();
+  });
+});

src/plugins/kibana_utils/public/core/create_kibana_utils_core.ts

@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+
+import { createGetterSetter, Get, Set } from './create_getter_setter';
+import { CoreStart } from '../../../../core/public';
+import { KUSavedObjectClient, createSavedObjectsClient } from './saved_objects_client';
+
+interface Return {
+  getCoreStart: Get<CoreStart>;
+  setCoreStart: Set<CoreStart>;
+  savedObjects: KUSavedObjectClient;
+}
+
+export const createKibanaUtilsCore = (): Return => {
+  const [getCoreStart, setCoreStart] = createGetterSetter<CoreStart>('CoreStart');
+  const savedObjects = createSavedObjectsClient(getCoreStart);
+
+  return {
+    getCoreStart,
+    setCoreStart,
+    savedObjects,
+  };
+};

src/plugins/kibana_utils/public/core/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 './create_getter_setter';
+export * from './create_kibana_utils_core';

src/plugins/kibana_utils/public/core/saved_objects_client.ts

@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+
+import { CoreStart } from '../../../../core/public';
+import { Get } from './create_getter_setter';
+
+type CoreSavedObjectClient = CoreStart['savedObjects']['client'];
+
+export interface KUSavedObjectClient {
+  get: CoreSavedObjectClient['get'];
+}
+
+export const createSavedObjectsClient = (getCoreStart: Get<CoreStart>) => {
+  const savedObjectsClient: KUSavedObjectClient = {
+    get: (...args) => getCoreStart().savedObjects.client.get(...args),
+  };
+
+  return savedObjectsClient;
+};

src/plugins/kibana_utils/public/core/state.ts

@@ -0,0 +1,23 @@
+/*
+ * 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.
+ */
+
+import { createGetterSetter } from './create_getter_setter';
+import { CoreStart } from '../../../../core/public';
+
+export const [getCoreStart, setCoreStart] = createGetterSetter<CoreStart>('CoreStart');

src/plugins/kibana_utils/public/index.ts

@@ -17,6 +17,7 @@
  * under the License.
  */
 
+export * from './core';
 export * from './store';
 export * from './parse';
 export * from './render_complete';