Updates to the Juptyer Server API

src/api.deprecated.d.ts

@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+import { Uri } from 'vscode';
+
+declare module './api' {
+    export interface JupyterServerCommandProvider {
+        /**
+         * Returns a list of commands to be displayed to the user.
+         * @deprecated Use `provideCommands` instead.
+         */
+        commands?: JupyterServerCommand[];
+    }
+
+    export interface JupyterServerCommand {
+        /**
+         * @deprecated Use `label` instead.
+         */
+        title?: string;
+        /**
+         * @deprecated Use `description` instead.
+         */
+        detail?: string;
+    }
+}

src/api.internal.d.ts

@@ -1,7 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-import { CancellationToken, Event, QuickPickItem, Uri } from 'vscode';
+import { Event, QuickPickItem, Uri } from 'vscode';
 
 // These types are only used internally within the extension.
 // Never to be exposed to other extensions.
@@ -27,13 +27,6 @@ declare module './api' {
          */
         removeJupyterServer?(server: JupyterServer): Promise<void>;
     }
-    export interface JupyterServerCommandProvider {
-        /**
-         * Returns a list of commands to be displayed to the user.
-         * @param value The value entered by the user in the quick pick.
-         */
-        provideCommands(value: string, token: CancellationToken): Promise<JupyterServerCommand[]>;
-    }
 
     export interface IJupyterUriProvider {
         /**

src/api.proposed.d.ts

@@ -5,7 +5,7 @@
 // To use these types please reach out to the Jupyter Extension team (file an issue on the Jupyter Extension GitHub repo).
 // Or please wait for these to be finalized and released.
 
-import { CancellationToken } from 'vscode';
+import { CancellationToken, ProviderResult } from 'vscode';
 import { Event, Uri } from 'vscode';
 
 declare module './api' {
@@ -97,28 +97,25 @@ declare module './api' {
         /**
          * Returns the list of servers.
          */
-        provideJupyterServers(token: CancellationToken): Promise<JupyterServer[]>;
+        provideJupyterServers(token: CancellationToken): ProviderResult<JupyterServer[]>;
         /**
          * Returns the connection information for the Jupyter server.
+         * It is OK to return the given `server`. When no result is returned, the given `server` will be used.
          */
-        resolveJupyterServer(server: JupyterServer, token: CancellationToken): Promise<ResolvedJupyterServer>;
+        resolveJupyterServer(server: JupyterServer, token: CancellationToken): ProviderResult<ResolvedJupyterServer>;
     }
     /**
      * Represents a reference to a Jupyter Server command.
      */
     export interface JupyterServerCommand {
         /**
-         * Title of the command, like `save`.
+         * A human-readable string which is rendered prominent.
          */
-        title: string;
-        /**
-         * A human-readable string which is rendered less prominent in a separate line.
-         */
-        detail?: string;
+        label: string;
         /**
-         * A tooltip for the command, when represented in the UI.
+         * A human-readable string which is rendered less prominent on the same line.
          */
-        tooltip?: string;
+        description?: string;
     }
     /**
      * Provider of Jupyter Server Commands.
@@ -127,20 +124,16 @@ declare module './api' {
     export interface JupyterServerCommandProvider {
         /**
          * Returns a list of commands to be displayed to the user.
+         * @param value The value entered by the user in the quick pick.
          */
-        commands: JupyterServerCommand[];
+        provideCommands(value: string | undefined, token: CancellationToken): Promise<JupyterServerCommand[]>;
         /**
          * Invoked when a command has been selected.
          * @param command The command selected by the user.
-         * @returns
-         * - JupyterServer  : The Jupyter Server object that was created
-         * - 'back'         : Go back to the previous UI in the workflow
-         * - undefined|void : Do nothing
-         */
-        handleCommand(
-            command: JupyterServerCommand,
-            token: CancellationToken
-        ): Promise<JupyterServer | 'back' | undefined | void>;
+         * @returns The Jupyter Server or a thenable that resolves to such. The lack of a result can be
+         * signaled by returning `undefined` or `null`.
+         */
+        handleCommand(command: JupyterServerCommand, token: CancellationToken): ProviderResult<JupyterServer>;
     }
     export interface JupyterServerCollection {
         /**

src/kernels/jupyter/clearJupyterServersCommand.ts

@@ -35,9 +35,11 @@ export class ClearJupyterServersCommand implements IExtensionSyncActivationServi
                                     return;
                                 }
                                 const token = new CancellationTokenSource();
-                                const servers = await provider.serverProvider.provideJupyterServers(token.token);
+                                const servers = await Promise.resolve(
+                                    provider.serverProvider.provideJupyterServers(token.token)
+                                );
                                 await Promise.all(
-                                    servers.map((server) =>
+                                    (servers || []).map((server) =>
                                         provider.serverProvider!.removeJupyterServer!(server).catch(noop)
                                     )
                                 );

src/kernels/jupyter/connection/jupyterServerProviderRegistry.ts

@@ -1,7 +1,14 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-import { CancellationToken, CancellationTokenSource, EventEmitter, QuickPickItem, Uri } from 'vscode';
+import {
+    CancellationError,
+    CancellationToken,
+    CancellationTokenSource,
+    EventEmitter,
+    QuickPickItem,
+    Uri
+} from 'vscode';
 import {
     IJupyterServerUri,
     IJupyterUriProvider,
@@ -17,7 +24,7 @@ import { IDisposable, IDisposableRegistry } from '../../../platform/common/types
 import { inject, injectable } from 'inversify';
 import { disposeAllDisposables, stripCodicons } from '../../../platform/common/helpers';
 import { traceError } from '../../../platform/logging';
-import { JUPYTER_HUB_EXTENSION_ID, JVSC_EXTENSION_ID } from '../../../platform/common/constants';
+import { JVSC_EXTENSION_ID } from '../../../platform/common/constants';
 
 export class JupyterServerCollectionImpl extends Disposables implements JupyterServerCollection {
     private _serverProvider?: JupyterServerProvider;
@@ -99,32 +106,33 @@ class JupyterUriProviderAdaptor extends Disposables implements IJupyterUriProvid
     }
     async getQuickPickEntryItems(
         value?: string
-    ): Promise<(QuickPickItem & { default?: boolean | undefined; command?: JupyterServerCommand })[]> {
+    ): Promise<(QuickPickItem & { default?: boolean | undefined; command: JupyterServerCommand })[]> {
         if (!this.provider.commandProvider) {
             return [];
         }
         const token = new CancellationTokenSource();
-        const isProposedApiAllowed =
-            this.provider.extensionId === JVSC_EXTENSION_ID || this.provider.extensionId === JUPYTER_HUB_EXTENSION_ID;
         try {
-            value = isProposedApiAllowed ? value : undefined;
             let items: JupyterServerCommand[] = [];
-            if (isProposedApiAllowed) {
+            if (this.provider.commandProvider.provideCommands) {
                 items = await this.provider.commandProvider.provideCommands(value || '', token.token);
+                if (
+                    (!items || !items.length) &&
+                    Array.isArray(this.provider.commandProvider.commands) &&
+                    this.provider.commandProvider.commands.length
+                ) {
+                    items = this.provider.commandProvider.commands;
+                }
             } else {
-                items = this.provider.commandProvider.commands;
+                items = this.provider.commandProvider.commands || [];
             }
-            if (isProposedApiAllowed) {
-                if (!value) {
-                    this.commands.clear();
-                }
-                items.forEach((c) => this.commands.set(c.title, c));
+            if (!value) {
+                this.commands.clear();
             }
+            items.forEach((c) => this.commands.set(c.label || c.title || '', c));
             return items.map((c) => {
                 return {
-                    label: stripCodicons(c.title),
-                    detail: stripCodicons(c.detail),
-                    tooltip: c.tooltip,
+                    label: stripCodicons(c.label || c.title),
+                    detail: stripCodicons(c.description || c.detail),
                     command: c
                 };
             });
@@ -139,33 +147,30 @@ class JupyterUriProviderAdaptor extends Disposables implements IJupyterUriProvid
         }
     }
     async handleQuickPick(
-        item: QuickPickItem & { command?: JupyterServerCommand },
+        item: QuickPickItem & { command: JupyterServerCommand },
         _backEnabled: boolean
     ): Promise<string | undefined> {
         if (!this.provider.commandProvider) {
             throw new Error(`No Jupyter Server Command Provider for ${this.provider.extensionId}#${this.provider.id}`);
         }
         const token = new CancellationTokenSource();
         try {
-            let command: JupyterServerCommand | undefined =
-                'command' in item ? (item.command as JupyterServerCommand) : undefined;
-            if (!command) {
-                command =
-                    this.provider.commandProvider.commands.find((c) => c.title === item.label) ||
-                    this.commands.get(item.label);
-            }
+            const command = item.command;
             if (!command) {
                 throw new Error(
                     `Jupyter Server Command ${item.label} not found in Command Provider ${this.provider.extensionId}#${this.provider.id}`
                 );
             }
             try {
-                const result = await this.provider.commandProvider.handleCommand(command, token.token);
-                if (result === 'back') {
-                    return result;
+                const result = await Promise.resolve(this.provider.commandProvider.handleCommand(command, token.token));
+                if (!result) {
+                    return 'back';
                 }
-                return result?.id;
+                return result.id;
             } catch (ex) {
+                if (ex instanceof CancellationError) {
+                    return;
+                }
                 traceError(
                     `Failed to execute Jupyter Server Command ${item.label} in Command Provider ${this.provider.extensionId}#${this.provider.id}`,
                     ex
@@ -196,10 +201,15 @@ class JupyterUriProviderAdaptor extends Disposables implements IJupyterUriProvid
                 };
             }
             if (this.provider.serverProvider?.resolveJupyterServer) {
-                const { connectionInformation: info } = await this.provider.serverProvider?.resolveJupyterServer(
-                    server,
-                    token.token
+                const result = await Promise.resolve(
+                    this.provider.serverProvider?.resolveJupyterServer(server, token.token)
                 );
+                const info = result?.connectionInformation || server.connectionInformation;
+                if (!info?.baseUrl) {
+                    throw new Error(
+                        `Jupyter Provider ${this.id} does not implement the method resolveJupyterServer and/or baseUrl not returned`
+                    );
+                }
                 return {
                     baseUrl: info.baseUrl.toString(),
                     displayName: server.label,
@@ -218,8 +228,8 @@ class JupyterUriProviderAdaptor extends Disposables implements IJupyterUriProvid
         if (this.provider.serverProvider) {
             const token = new CancellationTokenSource();
             try {
-                const servers = await this.getServers(token.token);
-                return servers.map((s) => s.id);
+                const servers = await Promise.resolve(this.getServers(token.token));
+                return (servers || []).map((s) => s.id);
             } catch (ex) {
                 traceError(`Failed to get Jupyter Servers from ${this.provider.extensionId}#${this.provider.id}`, ex);
                 return [];
@@ -246,7 +256,9 @@ class JupyterUriProviderAdaptor extends Disposables implements IJupyterUriProvid
     async getServer(handle: string, token: CancellationToken): Promise<JupyterServer> {
         const server =
             this._servers.get(handle) ||
-            (await this.getServers(token).then((servers) => servers.find((s) => s.id === handle)));
+            (await Promise.resolve(this.getServers(token)).then((servers) =>
+                (servers || []).find((s) => s.id === handle)
+            ));
         if (server) {
             return server;
         }
@@ -262,9 +274,9 @@ class JupyterUriProviderAdaptor extends Disposables implements IJupyterUriProvid
         if (!this.provider.serverProvider) {
             throw new Error(`No Jupyter Server Provider for ${this.provider.extensionId}#${this.provider.id}`);
         }
-        const servers = await this.provider.serverProvider.provideJupyterServers(token);
+        const servers = await Promise.resolve(this.provider.serverProvider.provideJupyterServers(token));
         this._servers.clear();
-        servers.forEach((s) => this._servers.set(s.id, s));
+        (servers || []).forEach((s) => this._servers.set(s.id, s));
         return servers;
     }
 }

src/kernels/jupyter/finder/remoteKernelFinderController.ts

@@ -133,8 +133,8 @@ export class RemoteKernelFinderController implements IRemoteKernelFinderControll
         }
         const token = new CancellationTokenSource();
         try {
-            const servers = await serverProvider.provideJupyterServers(token.token);
-            servers.forEach((server) => {
+            const servers = await Promise.resolve(serverProvider.provideJupyterServers(token.token));
+            (servers || []).forEach((server) => {
                 const serverProviderHandle = {
                     extensionId: collection.extensionId,
                     handle: server.id,

src/notebooks/controllers/kernelSource/remoteNotebookKernelSourceSelector.ts

@@ -163,7 +163,9 @@ export class RemoteNotebookKernelSourceSelector implements IRemoteNotebookKernel
             (p) => p.extensionId === provider.extensionId && p.id === provider.id
         )?.serverProvider;
         const serversPromise = serverProvider?.provideJupyterServers
-            ? serverProvider.provideJupyterServers.bind(serverProvider)(token)
+            ? Promise.resolve(serverProvider.provideJupyterServers.bind(serverProvider)(token)).then(
+                  (servers) => servers || []
+              )
             : Promise.resolve([]);
         const handledServerIds = new Set<string>();
         const [jupyterServers] = await Promise.all([

src/notebooks/controllers/remoteKernelControllerWatcher.ts

@@ -91,11 +91,11 @@ export class RemoteKernelControllerWatcher implements IExtensionSyncActivationSe
         const tokenSource = new CancellationTokenSource();
         this.disposables.push(tokenSource);
         try {
-            const currentServers = await serverProvider.provideJupyterServers(tokenSource.token);
+            const currentServers = await Promise.resolve(serverProvider.provideJupyterServers(tokenSource.token));
             await this.removeControllersAndUriStorageBelongingToInvalidServers(
                 collection.extensionId,
                 collection.id,
-                currentServers.map((s) => s.id)
+                (currentServers || []).map((s) => s.id)
             );
         } finally {
             tokenSource.dispose();

src/standalone/api/api.jupyterProvider.vscode.test.ts

@@ -348,13 +348,9 @@ suite('Jupyter Provider Tests', function () {
         );
 
         // Add a command and that command should be displayed along with the 2 servers.
+        let commandsToReturn = [{ label: 'Sample Command' }];
         collection.commandProvider = {
-            commands: [
-                {
-                    title: 'Sample Command'
-                }
-            ],
-            provideCommands: () => Promise.resolve([]),
+            provideCommands: () => Promise.resolve(commandsToReturn),
             handleCommand: () => Promise.resolve(undefined)
         };
         // await sleep(100);
@@ -374,7 +370,7 @@ suite('Jupyter Provider Tests', function () {
         );
 
         // Remove the command and try again.
-        collection.commandProvider.commands = [];
+        commandsToReturn = [];
 
         const controllerId4 = await commands.executeCommand(actionCommand.command, ...(actionCommand.arguments || []));
         // Verify a controller is not selected