Change workspace id to 6 random characters (#100)

* change workspace id size to 6

Signed-off-by: Yulong Ruan <ruanyl@amazon.com>

* added license header

Signed-off-by: Yulong Ruan <ruanyl@amazon.com>

---------

Signed-off-by: Yulong Ruan <ruanyl@amazon.com>

src/plugins/workspace/server/utils.test.ts

@@ -0,0 +1,21 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { generateRandomId } from './utils';
+
+describe('workspace utils', () => {
+  it('should generate id with the specified size', () => {
+    expect(generateRandomId(6)).toHaveLength(6);
+  });
+
+  it('should generate random IDs', () => {
+    const NUM_OF_ID = 10000;
+    const ids = new Set<string>();
+    for (let i = 0; i < NUM_OF_ID; i++) {
+      ids.add(generateRandomId(6));
+    }
+    expect(ids.size).toBe(NUM_OF_ID);
+  });
+});

src/plugins/workspace/server/utils.ts

@@ -0,0 +1,13 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import crypto from 'crypto';
+
+/**
+ * Generate URL friendly random ID
+ */
+export const generateRandomId = (size: number) => {
+  return crypto.randomBytes(size).toString('base64url').slice(0, size);
+};

src/plugins/workspace/server/workspace_client.ts

@@ -17,6 +17,9 @@ import {
   WorkspaceAttributeWithPermission,
 } from './types';
 import { workspace } from './saved_objects';
+import { generateRandomId } from './utils';
+
+const WORKSPACE_ID_SIZE = 6;
 
 export class WorkspaceClientWithSavedObject implements IWorkspaceDBImpl {
   private setupDep: CoreSetup;
@@ -53,9 +56,11 @@ export class WorkspaceClientWithSavedObject implements IWorkspaceDBImpl {
   ): ReturnType<IWorkspaceDBImpl['create']> {
     try {
       const { permissions, ...attributes } = payload;
+      const id = generateRandomId(WORKSPACE_ID_SIZE);
       const result = await this.getSavedObjectClientsFromRequestDetail(requestDetail).create<
         Omit<WorkspaceAttribute, 'id'>
       >(WORKSPACE_TYPE, attributes, {
+        id,
         permissions,
       });
       return {