Update TabComponent.tsx

- Load Legacy Mongo Shell V2 by default
- Add/Keep feature flags to load from portal BE and V1
- Skip code coverage if skipCodeCoverage environment variable is set to "true"

jest.config.js

@@ -18,7 +18,8 @@ module.exports = {
   // clearMocks: false,
 
   // Indicates whether the coverage information should be collected while executing the test
-  collectCoverage: true,
+
+  collectCoverage: process.env.skipCodeCoverage === "true" ? false : true,
 
   // An array of glob patterns indicating a set of files for which coverage information should be collected
   collectCoverageFrom: ["src/**/*.{js,jsx,ts,tsx}"],

less/documentDB.less

@@ -2576,6 +2576,10 @@ a:link {
 .querydropdown.placeholderVisible {
   font-style: italic;
 }
+.querydropdown.placeholderVisible::placeholder { /* Chrome, Firefox, Opera, Safari 10.1+ */
+  color: #767474;
+  opacity: 1; 
+}
 
 .querydropdown:hover {
   background-color: @AccentLow;
@@ -3087,3 +3091,4 @@ a:link {
   background: white;
   height: 100%;
 }
+

less/resourceTree.less

@@ -5,12 +5,17 @@
   overflow: auto;
 
   .databaseHeader {
+    padding: 1px;
     font-size: 14px;
   }
 
   .collectionHeader {
     font-size: 12px;
   }
+
+  .loadMoreHeader {
+    color: RGB(5, 99, 193);
+  }
 }
 
 .notebookResourceTree {
@@ -23,6 +28,4 @@
   .clickDisabled {
     pointer-events: none;
   }
-}
+}
-
-

src/Common/Constants.ts

@@ -141,7 +141,7 @@ export class Queries {
   public static UnlimitedPageOption: string = "unlimited";
   public static itemsPerPage: number = 100;
   public static unlimitedItemsPerPage: number = 100; // TODO: Figure out appropriate value so it works for accounts with a large number of partitions
-
+  public static containersPerPage: number = 50;
   public static QueryEditorMinHeightRatio: number = 0.1;
   public static QueryEditorMaxHeightRatio: number = 0.4;
   public static readonly DefaultMaxDegreeOfParallelism = 6;

src/Common/dataAccess/readCollections.ts

@@ -1,3 +1,4 @@
+import { Queries } from "Common/Constants";
 import { AuthType } from "../../AuthType";
 import * as DataModels from "../../Contracts/DataModels";
 import { userContext } from "../../UserContext";
@@ -31,6 +32,35 @@ export async function readCollections(databaseId: string): Promise<DataModels.Co
   }
 }
 
+export async function readCollectionsWithPagination(
+  databaseId: string,
+  continuationToken?: string
+): Promise<DataModels.CollectionsWithPagination> {
+  const clearMessage = logConsoleProgress(`Querying containers for database ${databaseId}`);
+  try {
+    const sdkResponse = await client()
+      .database(databaseId)
+      .containers.query(
+        { query: "SELECT * FROM c" },
+        {
+          continuationToken,
+          maxItemCount: Queries.containersPerPage,
+        }
+      )
+      .fetchNext();
+    const collectionsWithPagination: DataModels.CollectionsWithPagination = {
+      collections: sdkResponse.resources as DataModels.Collection[],
+      continuationToken: sdkResponse.continuationToken,
+    };
+    return collectionsWithPagination;
+  } catch (error) {
+    handleError(error, "ReadCollections", `Error while querying containers for database ${databaseId}`);
+    throw error;
+  } finally {
+    clearMessage();
+  }
+}
+
 async function readCollectionsWithARM(databaseId: string): Promise<DataModels.Collection[]> {
   let rpResponse;
 

src/Contracts/DataModels.ts

@@ -156,6 +156,11 @@ export interface Collection extends Resource {
   requestSchema?: () => void;
 }
 
+export interface CollectionsWithPagination {
+  continuationToken?: string;
+  collections?: Collection[];
+}
+
 export interface Database extends Resource {
   collections?: Collection[];
 }

src/Contracts/ViewModels.ts

@@ -87,13 +87,13 @@ export interface Database extends TreeNode {
   isDatabaseExpanded: ko.Observable<boolean>;
   isDatabaseShared: ko.Computed<boolean>;
   isSampleDB?: boolean;
-
+  collectionsContinuationToken?: string;
   selectedSubnodeKind: ko.Observable<CollectionTabKind>;
 
   expandDatabase(): Promise<void>;
   collapseDatabase(): void;
 
-  loadCollections(): Promise<void>;
+  loadCollections(restart?: boolean): Promise<void>;
   findCollectionWithId(collectionId: string): Collection;
   openAddCollection(database: Database, event: MouseEvent): void;
   onSettingsClick: () => void;

src/Explorer/Controls/Tabs/TabComponent.tsx

@@ -1,5 +1,4 @@
 import * as React from "react";
-import { AccessibleElement } from "../../Controls/AccessibleElement/AccessibleElement";
 import "./TabComponent.less";
 
 export interface TabContent {
@@ -19,11 +18,15 @@ interface TabComponentProps {
   onTabIndexChange: (newIndex: number) => void;
   hideHeader: boolean;
 }
+interface TabRefs {
+  [key: string]: HTMLElement;
+}
 
 /**
  * We assume there's at least one tab
  */
 export class TabComponent extends React.Component<TabComponentProps> {
+  private tabRefs: TabRefs = {};
   public constructor(props: TabComponentProps) {
     super(props);
 
@@ -33,11 +36,41 @@ export class TabComponent extends React.Component<TabComponentProps> {
       throw new Error(msg);
     }
   }
+  state = {
+    activeTabIndex: this.props.currentTabIndex,
+  };
 
   private setActiveTab(index: number): void {
     this.setState({ activeTabIndex: index });
     this.props.onTabIndexChange(index);
   }
+  private setIndex = (index: number) => {
+    const tab = this.tabRefs[index];
+    if (tab) {
+      tab.focus();
+      this.setState({ activeTabIndex: index });
+    }
+  };
+  private handlekeypress = (event: React.KeyboardEvent<HTMLSpanElement>): void => {
+    const { tabs, onTabIndexChange } = this.props;
+    const { activeTabIndex } = this.state;
+    const count = tabs.length;
+
+    const prevTab = () => {
+      this.setIndex((activeTabIndex - 1 + count) % count);
+      onTabIndexChange((activeTabIndex - 1 + count) % count);
+    };
+    const nextTab = () => {
+      this.setIndex((activeTabIndex + 1) % count);
+      onTabIndexChange((activeTabIndex + 1) % count);
+    };
+
+    if (event.key === "ArrowLeft") {
+      prevTab();
+    } else if (event.key === "ArrowRight") {
+      nextTab();
+    }
+  };
 
   private renderTabTitles(): JSX.Element[] {
     return this.props.tabs.map((tab: Tab, index: number) => {
@@ -46,23 +79,33 @@ export class TabComponent extends React.Component<TabComponentProps> {
       }
 
       let className = "toggleSwitch";
+      let ariaselected;
+      let tabindex;
       if (index === this.props.currentTabIndex) {
         className += " selectedToggle";
+        ariaselected = true;
+        tabindex = 0;
       } else {
         className += " unselectedToggle";
+        ariaselected = false;
+        tabindex = -1;
       }
 
       return (
         <div className="tab" key={index}>
-          <AccessibleElement
+          <span
-            as="span"
             className={className}
-            role="presentation"
+            role="tab"
-            onActivated={() => this.setActiveTab(index)}
+            onClick={() => this.setActiveTab(index)}
+            onKeyDown={(event: React.KeyboardEvent<HTMLSpanElement>) => this.handlekeypress(event)}
+            onFocus={() => this.setState({ activeTabIndex: index })}
             aria-label={`Select tab: ${tab.title}`}
+            aria-selected={ariaselected}
+            tabIndex={tabindex}
+            ref={(element) => (this.tabRefs[index] = element)}
           >
             {tab.title}
-          </AccessibleElement>
+          </span>
         </div>
       );
     });
@@ -77,7 +120,11 @@ export class TabComponent extends React.Component<TabComponentProps> {
 
     return (
       <div className="tabComponentContainer">
-        {!this.props.hideHeader && <div className="tabs tabSwitch">{this.renderTabTitles()}</div>}
+        {!this.props.hideHeader && (
+          <div className="tabs tabSwitch" role="tablist">
+            {this.renderTabTitles()}
+          </div>
+        )}
         <div className={className}>{currentTabContent.render()}</div>
       </div>
     );

src/Explorer/Controls/TreeComponent/treeComponent.less

@@ -3,7 +3,7 @@
 .treeComponent {
   .nodeItem {
     &:focus {
-      outline: 1px dashed @AccentMedium;
+      outline: 2px @AccentMedium;
     }
 
     .treeNodeHeader {

src/Explorer/Explorer.tsx

@@ -577,7 +577,7 @@ export default class Explorer {
     try {
       await Promise.all(
         databasesToLoad.map(async (database: ViewModels.Database) => {
-          await database.loadCollections();
+          await database.loadCollections(true);
           const isNewDatabase: boolean = _.some(newDatabases, (db: ViewModels.Database) => db.id() === database.id());
           if (isNewDatabase) {
             database.expandDatabase();

src/Explorer/Menus/CommandBar/CommandBarComponentButtonFactory.test.ts

@@ -25,7 +25,7 @@ describe("CommandBarComponentButtonFactory tests", () => {
       updateUserContext({
         databaseAccount: {
           properties: {
-            capabilities: [{ name: "EnableTable" }],
+            capabilities: [{ name: "EnableMongo" }],
           },
         } as DatabaseAccount,
       });
@@ -38,6 +38,38 @@ describe("CommandBarComponentButtonFactory tests", () => {
       );
       expect(enableAzureSynapseLinkBtn).toBeDefined();
     });
+
+    it("Button should not be visible for Tables API", () => {
+      updateUserContext({
+        databaseAccount: {
+          properties: {
+            capabilities: [{ name: "EnableTable" }],
+          },
+        } as DatabaseAccount,
+      });
+
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const enableAzureSynapseLinkBtn = buttons.find(
+        (button) => button.commandButtonLabel === enableAzureSynapseLinkBtnLabel
+      );
+      expect(enableAzureSynapseLinkBtn).toBeUndefined();
+    });
+
+    it("Button should not be visible for Cassandra API", () => {
+      updateUserContext({
+        databaseAccount: {
+          properties: {
+            capabilities: [{ name: "EnableCassandra" }],
+          },
+        } as DatabaseAccount,
+      });
+
+      const buttons = CommandBarComponentButtonFactory.createStaticCommandBarButtons(mockExplorer, selectedNodeState);
+      const enableAzureSynapseLinkBtn = buttons.find(
+        (button) => button.commandButtonLabel === enableAzureSynapseLinkBtnLabel
+      );
+      expect(enableAzureSynapseLinkBtn).toBeUndefined();
+    });
   });
 
   describe("Enable notebook button", () => {

src/Explorer/Menus/CommandBar/CommandBarComponentButtonFactory.tsx

@@ -51,11 +51,13 @@ export function createStaticCommandBarButtons(
   const buttons: CommandButtonComponentProps[] = [];
 
   buttons.push(newCollectionBtn);
+  if (userContext.apiType !== "Tables" && userContext.apiType !== "Cassandra") {
+    const addSynapseLink = createOpenSynapseLinkDialogButton(container);
 
-  const addSynapseLink = createOpenSynapseLinkDialogButton(container);
+    if (addSynapseLink) {
-  if (addSynapseLink) {
+      buttons.push(createDivider());
-    buttons.push(createDivider());
+      buttons.push(addSynapseLink);
-    buttons.push(addSynapseLink);
+    }
   }
 
   if (userContext.apiType !== "Tables") {

src/Explorer/Panes/AddCollectionPanel.tsx

@@ -403,6 +403,7 @@ export class AddCollectionPanel extends React.Component<AddCollectionPanelProps,
                 content={`Unique identifier for the ${getCollectionName().toLocaleLowerCase()} and used for id-based routing through REST and all SDKs.`}
               >
                 <Icon
+                  role="button"
                   iconName="Info"
                   className="panelInfoIcon"
                   tabIndex={0}

src/Explorer/Panes/SettingsPane/SettingsPane.tsx

@@ -21,6 +21,11 @@ export const SettingsPane: FunctionComponent = () => {
   const [customItemPerPage, setCustomItemPerPage] = useState<number>(
     LocalStorageUtility.getEntryNumber(StorageKey.CustomItemPerPage) || 0
   );
+  const [containerPaginationEnabled, setContainerPaginationEnabled] = useState<boolean>(
+    LocalStorageUtility.hasItem(StorageKey.ContainerPaginationEnabled)
+      ? LocalStorageUtility.getEntryString(StorageKey.ContainerPaginationEnabled) === "true"
+      : false
+  );
   const [crossPartitionQueryEnabled, setCrossPartitionQueryEnabled] = useState<boolean>(
     LocalStorageUtility.hasItem(StorageKey.IsCrossPartitionQueryEnabled)
       ? LocalStorageUtility.getEntryString(StorageKey.IsCrossPartitionQueryEnabled) === "true"
@@ -50,6 +55,7 @@ export const SettingsPane: FunctionComponent = () => {
       isCustomPageOptionSelected() ? customItemPerPage : Constants.Queries.unlimitedItemsPerPage
     );
     LocalStorageUtility.setEntryNumber(StorageKey.CustomItemPerPage, customItemPerPage);
+    LocalStorageUtility.setEntryString(StorageKey.ContainerPaginationEnabled, containerPaginationEnabled.toString());
     LocalStorageUtility.setEntryString(StorageKey.IsCrossPartitionQueryEnabled, crossPartitionQueryEnabled.toString());
     LocalStorageUtility.setEntryNumber(StorageKey.MaxDegreeOfParellism, maxDegreeOfParallelism);
 
@@ -185,6 +191,25 @@ export const SettingsPane: FunctionComponent = () => {
             </div>
           </div>
         )}
+        <div className="settingsSection">
+          <div className="settingsSectionPart">
+            <div className="settingsSectionLabel">
+              Enable container pagination
+              <InfoTooltip>
+                Load 50 containers at a time. Currently, containers are not pulled in alphanumeric order.
+              </InfoTooltip>
+            </div>
+            <Checkbox
+              styles={{
+                label: { padding: 0 },
+              }}
+              className="padding"
+              ariaLabel="Enable container pagination"
+              checked={containerPaginationEnabled}
+              onChange={() => setContainerPaginationEnabled(!containerPaginationEnabled)}
+            />
+          </div>
+        </div>
         {shouldShowCrossPartitionOption && (
           <div className="settingsSection">
             <div className="settingsSectionPart">

src/Explorer/Panes/SettingsPane/__snapshots__/SettingsPane.test.tsx.snap

@@ -97,6 +97,35 @@ exports[`Settings Pane should render Default properly 1`] = `
         </div>
       </div>
     </div>
+    <div
+      className="settingsSection"
+    >
+      <div
+        className="settingsSectionPart"
+      >
+        <div
+          className="settingsSectionLabel"
+        >
+          Enable container pagination
+          <InfoTooltip>
+            Load 50 containers at a time. Currently, containers are not pulled in alphanumeric order.
+          </InfoTooltip>
+        </div>
+        <StyledCheckboxBase
+          ariaLabel="Enable container pagination"
+          checked={false}
+          className="padding"
+          onChange={[Function]}
+          styles={
+            Object {
+              "label": Object {
+                "padding": 0,
+              },
+            }
+          }
+        />
+      </div>
+    </div>
     <div
       className="settingsSection"
     >
@@ -182,6 +211,35 @@ exports[`Settings Pane should render Gremlin properly 1`] = `
   <div
     className="paneMainContent"
   >
+    <div
+      className="settingsSection"
+    >
+      <div
+        className="settingsSectionPart"
+      >
+        <div
+          className="settingsSectionLabel"
+        >
+          Enable container pagination
+          <InfoTooltip>
+            Load 50 containers at a time. Currently, containers are not pulled in alphanumeric order.
+          </InfoTooltip>
+        </div>
+        <StyledCheckboxBase
+          ariaLabel="Enable container pagination"
+          checked={false}
+          className="padding"
+          onChange={[Function]}
+          styles={
+            Object {
+              "label": Object {
+                "padding": 0,
+              },
+            }
+          }
+        />
+      </div>
+    </div>
     <div
       className="settingsSection"
     >

src/Explorer/Panes/__snapshots__/AddCollectionPanel.test.tsx.snap

@@ -172,6 +172,7 @@ exports[`AddCollectionPanel should render Default properly 1`] = `
             ariaLabel="Unique identifier for the container and used for id-based routing through REST and all SDKs."
             className="panelInfoIcon"
             iconName="Info"
+            role="button"
             tabIndex={0}
           />
         </StyledTooltipHostBase>

src/Explorer/Tabs/MongoShellTab/MongoShellTabComponent.tsx

@@ -1,6 +1,6 @@
 import React, { Component } from "react";
 import * as Constants from "../../../Common/Constants";
-import { configContext, Platform } from "../../../ConfigContext";
+import { configContext } from "../../../ConfigContext";
 import * as ViewModels from "../../../Contracts/ViewModels";
 import { Action, ActionModifiers } from "../../../Shared/Telemetry/TelemetryConstants";
 import * as TelemetryProcessor from "../../../Shared/Telemetry/TelemetryProcessor";
@@ -9,6 +9,8 @@ import { isInvalidParentFrameOrigin, isReadyMessage } from "../../../Utils/Messa
 import { logConsoleError, logConsoleInfo, logConsoleProgress } from "../../../Utils/NotificationConsoleUtils";
 import Explorer from "../../Explorer";
 import TabsBase from "../TabsBase";
+import { getMongoShellOrigin } from "./getMongoShellOrigin";
+import { getMongoShellUrl } from "./getMongoShellUrl";
 
 //eslint-disable-next-line
 class MessageType {
@@ -47,7 +49,6 @@ export default class MongoShellTabComponent extends Component<
   IMongoShellTabComponentProps,
   IMongoShellTabComponentStates
 > {
-  private _runtimeEndpoint: string;
   private _logTraces: Map<string, number>;
 
   constructor(props: IMongoShellTabComponentProps) {
@@ -55,7 +56,7 @@ export default class MongoShellTabComponent extends Component<
     this._logTraces = new Map();
 
     this.state = {
-      url: this.getURL(),
+      url: getMongoShellUrl(),
     };
 
     props.onMongoShellTabAccessor({
@@ -65,22 +66,6 @@ export default class MongoShellTabComponent extends Component<
     window.addEventListener("message", this.handleMessage.bind(this), false);
   }
 
-  public getURL(): string {
-    const { databaseAccount: account } = userContext;
-    const resourceId = account?.id;
-    const accountName = account?.name;
-    const mongoEndpoint = account?.properties?.mongoEndpoint || account?.properties?.documentEndpoint;
-
-    this._runtimeEndpoint = configContext.platform === Platform.Hosted ? configContext.BACKEND_ENDPOINT : "";
-    const extensionEndpoint: string = configContext.BACKEND_ENDPOINT || this._runtimeEndpoint || "";
-    let baseUrl = "/content/mongoshell/dist/";
-    if (userContext.portalEnv === "localhost") {
-      baseUrl = "/content/mongoshell/";
-    }
-
-    return `${extensionEndpoint}${baseUrl}index.html?resourceId=${resourceId}&accountName=${accountName}&mongoEndpoint=${mongoEndpoint}`;
-  }
-
   //eslint-disable-next-line
   public setContentFocus(event: React.SyntheticEvent<HTMLIFrameElement, Event>): void {}
 
@@ -136,6 +121,7 @@ export default class MongoShellTabComponent extends Component<
     const collectionId = this.props.collection.id();
     const apiEndpoint = configContext.BACKEND_ENDPOINT;
     const encryptedAuthToken: string = userContext.accessToken;
+    const targetOrigin = getMongoShellOrigin();
 
     shellIframe.contentWindow.postMessage(
       {
@@ -151,7 +137,7 @@ export default class MongoShellTabComponent extends Component<
           apiEndpoint: apiEndpoint,
         },
       },
-      configContext.BACKEND_ENDPOINT
+      targetOrigin
     );
   }
 

src/Explorer/Tabs/MongoShellTab/getMongoShellOrigin.test.ts

@@ -0,0 +1,86 @@
+import { extractFeatures } from "Platform/Hosted/extractFeatures";
+import { configContext } from "../../../ConfigContext";
+import { updateUserContext } from "../../../UserContext";
+import { getMongoShellOrigin } from "./getMongoShellOrigin";
+
+describe("getMongoShellOrigin", () => {
+  (window as { origin: string }).origin = "window_origin";
+
+  beforeEach(() => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV1": "false",
+          "feature.enableLegacyMongoShellV2": "false",
+          "feature.enableLegacyMongoShellV1Debug": "false",
+          "feature.enableLegacyMongoShellV2Debug": "false",
+          "feature.loadLegacyMongoShellFromBE": "false",
+        })
+      ),
+    });
+  });
+
+  it("should return  by default", () => {
+    expect(getMongoShellOrigin()).toBe(window.origin);
+  });
+
+  it("should return window.origin when enableLegacyMongoShellV1", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV1": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellOrigin()).toBe(window.origin);
+  });
+
+  it("should return window.origin when enableLegacyMongoShellV2===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV2": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellOrigin()).toBe(window.origin);
+  });
+
+  it("should return window.origin when enableLegacyMongoShellV1Debug===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV1Debug": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellOrigin()).toBe(window.origin);
+  });
+
+  it("should return window.origin when enableLegacyMongoShellV2Debug===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV2Debug": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellOrigin()).toBe(window.origin);
+  });
+
+  it("should return BACKEND_ENDPOINT when loadLegacyMongoShellFromBE===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.loadLegacyMongoShellFromBE": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellOrigin()).toBe(configContext.BACKEND_ENDPOINT);
+  });
+});

src/Explorer/Tabs/MongoShellTab/getMongoShellOrigin.ts

@@ -0,0 +1,10 @@
+import { configContext } from "../../../ConfigContext";
+import { userContext } from "../../../UserContext";
+
+export function getMongoShellOrigin(): string {
+  if (userContext.features.loadLegacyMongoShellFromBE === true) {
+    return configContext.BACKEND_ENDPOINT;
+  }
+
+  return window.origin;
+}

src/Explorer/Tabs/MongoShellTab/getMongoShellUrl.test.ts

@@ -0,0 +1,206 @@
+import { extractFeatures } from "Platform/Hosted/extractFeatures";
+import { Platform, configContext, resetConfigContext, updateConfigContext } from "../../../ConfigContext";
+import { updateUserContext, userContext } from "../../../UserContext";
+import { getExtensionEndpoint, getMongoShellUrl } from "./getMongoShellUrl";
+
+const mongoBackendEndpoint = "https://localhost:1234";
+
+describe("getMongoShellUrl", () => {
+  let queryString = "";
+
+  beforeEach(() => {
+    resetConfigContext();
+
+    updateConfigContext({
+      BACKEND_ENDPOINT: mongoBackendEndpoint,
+      platform: Platform.Hosted,
+    });
+
+    updateUserContext({
+      subscriptionId: "fakeSubscriptionId",
+      resourceGroup: "fakeResourceGroup",
+      databaseAccount: {
+        id: "fakeId",
+        name: "fakeName",
+        location: "fakeLocation",
+        type: "fakeType",
+        kind: "fakeKind",
+        properties: {
+          documentEndpoint: "fakeDocumentEndpoint",
+          tableEndpoint: "fakeTableEndpoint",
+          gremlinEndpoint: "fakeGremlinEndpoint",
+          cassandraEndpoint: "fakeCassandraEndpoint",
+        },
+      },
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV1": "false",
+          "feature.enableLegacyMongoShellV2": "false",
+          "feature.enableLegacyMongoShellV1Debug": "false",
+          "feature.enableLegacyMongoShellV2Debug": "false",
+          "feature.loadLegacyMongoShellFromBE": "false",
+        })
+      ),
+      portalEnv: "prod",
+    });
+
+    queryString = `resourceId=${userContext.databaseAccount.id}&accountName=${userContext.databaseAccount.name}&mongoEndpoint=${userContext.databaseAccount.properties.documentEndpoint}`;
+  });
+
+  it("should return /mongoshell/indexv2.html by default ", () => {
+    expect(getMongoShellUrl()).toBe(`/mongoshell/indexv2.html?${queryString}`);
+  });
+
+  it("should return /mongoshell/indexv2.html when portalEnv==localhost ", () => {
+    updateUserContext({
+      portalEnv: "localhost",
+    });
+
+    expect(getMongoShellUrl()).toBe(`/mongoshell/indexv2.html?${queryString}`);
+  });
+
+  it("should return /mongoshell/index.html when enableLegacyMongoShellV1===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV1": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellUrl()).toBe(`/mongoshell/index.html?${queryString}`);
+  });
+
+  it("should return /mongoshell/index.html when enableLegacyMongoShellV2===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV2": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellUrl()).toBe(`/mongoshell/indexv2.html?${queryString}`);
+  });
+
+  it("should return /mongoshell/index.html when enableLegacyMongoShellV1Debug===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV1Debug": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellUrl()).toBe(`/mongoshell/debug/index.html?${queryString}`);
+  });
+
+  it("should return /mongoshell/index.html when enableLegacyMongoShellV2Debug===true", () => {
+    updateUserContext({
+      features: extractFeatures(
+        new URLSearchParams({
+          "feature.enableLegacyMongoShellV2Debug": "true",
+        })
+      ),
+    });
+
+    expect(getMongoShellUrl()).toBe(`/mongoshell/debug/indexv2.html?${queryString}`);
+  });
+
+  describe("loadLegacyMongoShellFromBE===true", () => {
+    beforeEach(() => {
+      resetConfigContext();
+      updateConfigContext({
+        BACKEND_ENDPOINT: mongoBackendEndpoint,
+        platform: Platform.Hosted,
+      });
+
+      updateUserContext({
+        features: extractFeatures(
+          new URLSearchParams({
+            "feature.loadLegacyMongoShellFromBE": "true",
+          })
+        ),
+      });
+    });
+
+    it("should return /mongoshell/index.html", () => {
+      const endpoint = getExtensionEndpoint(configContext.platform, configContext.BACKEND_ENDPOINT);
+      expect(getMongoShellUrl()).toBe(`${endpoint}/content/mongoshell/debug/index.html?${queryString}`);
+    });
+
+    it("configContext.platform !== Platform.Hosted, should return /mongoshell/indexv2.html", () => {
+      updateConfigContext({
+        platform: Platform.Portal,
+      });
+
+      const endpoint = getExtensionEndpoint(configContext.platform, configContext.BACKEND_ENDPOINT);
+      expect(getMongoShellUrl()).toBe(`${endpoint}/content/mongoshell/debug/index.html?${queryString}`);
+    });
+
+    it("configContext.BACKEND_ENDPOINT !== '' and configContext.platform !== Platform.Hosted, should return /mongoshell/indexv2.html", () => {
+      resetConfigContext();
+      updateConfigContext({
+        platform: Platform.Portal,
+        BACKEND_ENDPOINT: mongoBackendEndpoint,
+      });
+
+      const endpoint = getExtensionEndpoint(configContext.platform, configContext.BACKEND_ENDPOINT);
+      expect(getMongoShellUrl()).toBe(`${endpoint}/content/mongoshell/debug/index.html?${queryString}`);
+    });
+
+    it("configContext.BACKEND_ENDPOINT === '' and configContext.platform === Platform.Hosted, should return /mongoshell/indexv2.html ", () => {
+      resetConfigContext();
+      updateConfigContext({
+        platform: Platform.Hosted,
+      });
+
+      const endpoint = getExtensionEndpoint(configContext.platform, configContext.BACKEND_ENDPOINT);
+      expect(getMongoShellUrl()).toBe(`${endpoint}/content/mongoshell/debug/index.html?${queryString}`);
+    });
+
+    it("configContext.BACKEND_ENDPOINT === '' and configContext.platform !== Platform.Hosted, should return /mongoshell/indexv2.html", () => {
+      resetConfigContext();
+      updateConfigContext({
+        platform: Platform.Portal,
+      });
+
+      const endpoint = getExtensionEndpoint(configContext.platform, configContext.BACKEND_ENDPOINT);
+      expect(getMongoShellUrl()).toBe(`${endpoint}/content/mongoshell/debug/index.html?${queryString}`);
+    });
+  });
+});
+
+describe("getExtensionEndpoint", () => {
+  it("when platform === Platform.Hosted, backendEndpoint is undefined ", () => {
+    expect(getExtensionEndpoint(Platform.Hosted, undefined)).toBe("");
+  });
+
+  it("when platform === Platform.Hosted, backendEndpoint === ''", () => {
+    expect(getExtensionEndpoint(Platform.Hosted, "")).toBe("");
+  });
+
+  it("when platform === Platform.Hosted, backendEndpoint === null", () => {
+    expect(getExtensionEndpoint(Platform.Hosted, null)).toBe("");
+  });
+
+  it("when platform === Platform.Hosted, backendEndpoint != '' ", () => {
+    expect(getExtensionEndpoint(Platform.Hosted, "foo")).toBe("foo");
+  });
+
+  it("when platform === Platform.Portal, backendEndpoint is udefined ", () => {
+    expect(getExtensionEndpoint(Platform.Portal, undefined)).toBe("");
+  });
+
+  it("when platform === Platform.Portal, backendEndpoint === '' ", () => {
+    expect(getExtensionEndpoint(Platform.Portal, "")).toBe("");
+  });
+
+  it("when platform === Platform.Portal, backendEndpoint === null", () => {
+    expect(getExtensionEndpoint(Platform.Portal, null)).toBe("");
+  });
+
+  it("when platform !== Platform.Portal, backendEndpoint != '' ", () => {
+    expect(getExtensionEndpoint(Platform.Portal, "foo")).toBe("foo");
+  });
+});

src/Explorer/Tabs/MongoShellTab/getMongoShellUrl.ts

@@ -0,0 +1,45 @@
+import { configContext, Platform } from "../../../ConfigContext";
+import { userContext } from "../../../UserContext";
+
+export function getMongoShellUrl(): string {
+  const { databaseAccount: account } = userContext;
+  const resourceId = account?.id;
+  const accountName = account?.name;
+  const mongoEndpoint = account?.properties?.mongoEndpoint || account?.properties?.documentEndpoint;
+  const queryString = `resourceId=${resourceId}&accountName=${accountName}&mongoEndpoint=${mongoEndpoint}`;
+
+  if (userContext.features.enableLegacyMongoShellV1 === true) {
+    return `/mongoshell/index.html?${queryString}`;
+  }
+
+  if (userContext.features.enableLegacyMongoShellV1Debug === true) {
+    return `/mongoshell/debug/index.html?${queryString}`;
+  }
+
+  if (userContext.features.enableLegacyMongoShellV2 === true) {
+    return `/mongoshell/indexv2.html?${queryString}`;
+  }
+
+  if (userContext.features.enableLegacyMongoShellV2Debug === true) {
+    return `/mongoshell/debug/indexv2.html?${queryString}`;
+  }
+
+  if (userContext.portalEnv === "localhost") {
+    return `/mongoshell/indexv2.html?${queryString}`;
+  }
+
+  if (userContext.features.loadLegacyMongoShellFromBE === true) {
+    const extensionEndpoint: string = getExtensionEndpoint(configContext.platform, configContext.BACKEND_ENDPOINT);
+    return `${extensionEndpoint}/content/mongoshell/debug/index.html?${queryString}`;
+  }
+
+  return `/mongoshell/indexv2.html?${queryString}`;
+}
+
+export function getExtensionEndpoint(platform: string, backendEndpoint: string): string {
+  const runtimeEndpoint = platform === Platform.Hosted ? backendEndpoint : "";
+
+  const extensionEndpoint: string = backendEndpoint || runtimeEndpoint || "";
+
+  return extensionEndpoint;
+}

src/Explorer/Tabs/Tabs.tsx

@@ -92,6 +92,7 @@ function TabNav({ tab, active, tabKind }: { tab?: Tab; active: boolean; tabKind?
         }
       }}
       className={active ? "active tabList" : "tabList"}
+      style={active ? { fontWeight: "bolder" } : {}}
       title={useObservable(tab?.tabPath || ko.observable(""))}
       aria-selected={active}
       aria-expanded={active}

src/Explorer/Tree/Database.tsx

@@ -3,7 +3,7 @@ import React from "react";
 import * as _ from "underscore";
 import { AuthType } from "../../AuthType";
 import * as Constants from "../../Common/Constants";
-import { readCollections } from "../../Common/dataAccess/readCollections";
+import { readCollections, readCollectionsWithPagination } from "../../Common/dataAccess/readCollections";
 import { readDatabaseOffer } from "../../Common/dataAccess/readDatabaseOffer";
 import { getErrorMessage, getErrorStack } from "../../Common/ErrorHandlingUtils";
 import * as Logger from "../../Common/Logger";
@@ -13,6 +13,7 @@ import * as ViewModels from "../../Contracts/ViewModels";
 import { useSidePanel } from "../../hooks/useSidePanel";
 import { useTabs } from "../../hooks/useTabs";
 import { IJunoResponse, JunoClient } from "../../Juno/JunoClient";
+import * as StorageUtility from "../../Shared/StorageUtility";
 import { Action, ActionModifiers } from "../../Shared/Telemetry/TelemetryConstants";
 import * as TelemetryProcessor from "../../Shared/Telemetry/TelemetryProcessor";
 import { userContext } from "../../UserContext";
@@ -38,6 +39,7 @@ export default class Database implements ViewModels.Database {
   public selectedSubnodeKind: ko.Observable<ViewModels.CollectionTabKind>;
   public junoClient: JunoClient;
   public isSampleDB: boolean;
+  public collectionsContinuationToken?: string;
   private isOfferRead: boolean;
 
   constructor(container: Explorer, data: DataModels.Database) {
@@ -140,7 +142,11 @@ export default class Database implements ViewModels.Database {
     }
 
     await this.loadOffer();
-    await this.loadCollections();
+
+    if (this.collections()?.length === 0) {
+      await this.loadCollections(true);
+    }
+
     this.isDatabaseExpanded(true);
     TelemetryProcessor.trace(Action.ExpandTreeNode, ActionModifiers.Mark, {
       description: "Database node",
@@ -162,9 +168,31 @@ export default class Database implements ViewModels.Database {
     });
   }
 
-  public async loadCollections(): Promise<void> {
+  public async loadCollections(restart = false) {
     const collectionVMs: Collection[] = [];
-    const collections: DataModels.Collection[] = await readCollections(this.id());
+    let collections: DataModels.Collection[] = [];
+    if (restart) {
+      this.collectionsContinuationToken = undefined;
+    }
+    const containerPaginationEnabled =
+      StorageUtility.LocalStorageUtility.getEntryString(StorageUtility.StorageKey.ContainerPaginationEnabled) ===
+      "true";
+    if (containerPaginationEnabled) {
+      const collectionsWithPagination: DataModels.CollectionsWithPagination = await readCollectionsWithPagination(
+        this.id(),
+        this.collectionsContinuationToken
+      );
+
+      if (collectionsWithPagination.collections?.length === Constants.Queries.containersPerPage) {
+        this.collectionsContinuationToken = collectionsWithPagination.continuationToken;
+      } else {
+        this.collectionsContinuationToken = undefined;
+      }
+      collections = collectionsWithPagination.collections;
+    } else {
+      collections = await readCollections(this.id());
+    }
+
     // TODO Remove
     // This is a hack to make Mongo collections read via ARM have a SQL-ish partitionKey property
     if (userContext.apiType === "Mongo" && userContext.authType === AuthType.AAD) {
@@ -199,7 +227,9 @@ export default class Database implements ViewModels.Database {
 
     //merge collections
     this.addCollectionsToList(collectionVMs);
-    this.deleteCollectionsFromList(deltaCollections.toDelete);
+    if (!containerPaginationEnabled || restart) {
+      this.deleteCollectionsFromList(deltaCollections.toDelete);
+    }
 
     useDatabases.getState().updateDatabase(this);
   }

src/Explorer/Tree/ResourceTree.tsx

@@ -479,6 +479,18 @@ export const ResourceTree: React.FC<ResourceTreeProps> = ({ container }: Resourc
           databaseNode.children.push(buildCollectionNode(database, collection))
         );
 
+      if (database.collectionsContinuationToken) {
+        const loadMoreNode: TreeNode = {
+          label: "load more",
+          className: "loadMoreHeader",
+          onClick: async () => {
+            await database.loadCollections();
+            useDatabases.getState().updateDatabase(database);
+          },
+        };
+        databaseNode.children.push(loadMoreNode);
+      }
+
       database.collections.subscribe((collections: ViewModels.Collection[]) => {
         collections.forEach((collection: ViewModels.Collection) =>
           databaseNode.children.push(buildCollectionNode(database, collection))

src/Platform/Hosted/extractFeatures.ts

@@ -30,6 +30,11 @@ export type Features = {
   readonly mongoProxyAPIs?: string;
   readonly enableThroughputCap: boolean;
   readonly enableHierarchicalKeys: boolean;
+  readonly enableLegacyMongoShellV1: boolean;
+  readonly enableLegacyMongoShellV1Debug: boolean;
+  readonly enableLegacyMongoShellV2: boolean;
+  readonly enableLegacyMongoShellV2Debug: boolean;
+  readonly loadLegacyMongoShellFromBE: boolean;
 
   // can be set via both flight and feature flag
   autoscaleDefault: boolean;
@@ -92,6 +97,11 @@ export function extractFeatures(given = new URLSearchParams(window.location.sear
     notebooksDownBanner: "true" === get("notebooksDownBanner"),
     enableThroughputCap: "true" === get("enablethroughputcap"),
     enableHierarchicalKeys: "true" === get("enablehierarchicalkeys"),
+    enableLegacyMongoShellV1: "true" === get("enablelegacymongoshellv1"),
+    enableLegacyMongoShellV1Debug: "true" === get("enablelegacymongoshellv1debug"),
+    enableLegacyMongoShellV2: "true" === get("enablelegacymongoshellv2"),
+    enableLegacyMongoShellV2Debug: "true" === get("enablelegacymongoshellv2debug"),
+    loadLegacyMongoShellFromBE: "true" === get("loadlegacymongoshellfrombe"),
   };
 }
 

src/Shared/StorageUtility.ts

@@ -4,6 +4,7 @@ import * as SessionStorageUtility from "./SessionStorageUtility";
 export { LocalStorageUtility, SessionStorageUtility };
 export enum StorageKey {
   ActualItemPerPage,
+  ContainerPaginationEnabled,
   CustomItemPerPage,
   DatabaseAccountId,
   EncryptedKeyToken,