rawLog option for OutputChannel to colourise the Ark log

extensions/jupyter-adapter/src/JupyterKernel.ts

@@ -299,7 +299,7 @@ export class JupyterKernel extends EventEmitter implements vscode.Disposable {
 			// Establish a log channel for the kernel we're connecting to, if we
 			// don't already have one (we will if we're restarting)
 			if (!this._logChannel) {
-				this._logChannel = vscode.window.createOutputChannel(`Runtime: ${this._spec.display_name}`);
+				this._logChannel = positron.window.createRawLogOutputChannel(`Runtime: ${this._spec.display_name}`);
 			}
 
 			// Bind to the Jupyter session

src/positron-dts/positron.d.ts

@@ -775,6 +775,20 @@ declare module 'positron' {
 		 * @return New preview panel.
 		 */
 		export function createPreviewPanel(viewType: string, title: string, preserveFocus?: boolean, options?: PreviewOptions): PreviewPanel;
+
+		/**
+		 * Create a log output channel from raw data.
+		 *
+		 * Variant of `createOutputChannel()` that creates a "raw log" output channel.
+		 * Compared to a normal `LogOutputChannel`, this doesn't add timestamps or info
+		 * level. It's meant for extensions that create fully formed log lines but still
+		 * want to benefit from the colourised rendering of log output channels.
+		 *
+		 * @param name Human-readable string which will be used to represent the channel in the UI.
+		 *
+		 * @return New log output channel.
+		 */
+		export function createRawLogOutputChannel(name: string): vscode.OutputChannel;
 	}
 
 	namespace runtime {

src/vs/platform/log/node/spdlogLog.ts

@@ -101,6 +101,15 @@ export class SpdLogLogger extends AbstractMessageLogger implements ILogger {
 		}
 	}
 
+	// --- Start Positron ---
+	// Override pattern to avoid adding timestamps etc
+	public setRawLogger() {
+		this._loggerCreationPromise.then(() => {
+			this._logger!.setPattern('%v');
+		});
+	}
+	// --- End Positron ---
+
 	protected log(level: LogLevel, message: string): void {
 		if (this._logger) {
 			log(this._logger, level, message);

src/vs/workbench/api/common/extHostOutput.ts

@@ -41,6 +41,15 @@ class ExtHostOutputChannel extends AbstractMessageLogger implements vscode.LogOu
 		this._register(logger.onDidChangeLogLevel(level => this.setLevel(level)));
 	}
 
+	// --- Start Positron ---
+	public setRawLogger() {
+		let loggerUnchecked = this.logger as any;
+		if (loggerUnchecked.setRawLogger) {
+			loggerUnchecked.setRawLogger();
+		};
+	}
+	// --- End Positron ---
+
 	get logLevel(): LogLevel {
 		return this.getLevel();
 	}
@@ -161,6 +170,24 @@ export class ExtHostOutputService implements ExtHostOutputServiceShape {
 		return log ? this.createExtHostLogOutputChannel(name, logLevel ?? this.logService.getLevel(), <Promise<ExtHostOutputChannel>>extHostOutputChannel) : this.createExtHostOutputChannel(name, <Promise<ExtHostOutputChannel>>extHostOutputChannel);
 	}
 
+	// --- Start Positron ---
+	// Variant of createOutputChannel() that creates a "raw log" output channel.
+	// Compared to a normal `LogOutputChannel`, this doesn't add timestamps or info
+	// level. It's meant for extensions that create fully formed log lines but still
+	// want to benefit from the colourised rendering of log output channels.
+	createRawLogOutputChannel(name: string, extension: IExtensionDescription): vscode.OutputChannel {
+		const channel = this.createOutputChannel(name, { log: true }, extension);
+
+		// Set our custom raw log
+		const channelUnchecked = channel as any
+		if (channelUnchecked.setRawLogger) {
+			channelUnchecked.setRawLogger();
+		}
+
+		return channel;
+	}
+	// --- End Positron ---
+
 	private async doCreateOutputChannel(name: string, languageId: string | undefined, extension: IExtensionDescription): Promise<ExtHostOutputChannel> {
 		if (!this.outputDirectoryPromise) {
 			this.outputDirectoryPromise = this.extHostFileSystem.value.createDirectory(this.outputsLocation).then(() => this.outputsLocation);
@@ -216,6 +243,13 @@ export class ExtHostOutputService implements ExtHostOutputServiceShape {
 				validate();
 				channelPromise.then(channel => channel.appendLine(value));
 			},
+			// --- Start Positron ---
+			// @ts-ignore
+			setRawLogger(): void {
+				validate();
+				channelPromise.then(channel => channel.setRawLogger());
+			},
+			// --- End Positron ---
 			clear(): void {
 				validate();
 				channelPromise.then(channel => channel.clear());

src/vs/workbench/api/common/positron/extHost.positron.api.impl.ts

@@ -18,6 +18,7 @@ import { ExtHostContext } from 'vs/workbench/api/common/extHost.protocol';
 import { IExtHostWorkspace } from 'vs/workbench/api/common/extHostWorkspace';
 import { ExtHostWebviews } from 'vs/workbench/api/common/extHostWebview';
 import { ExtHostLanguageFeatures } from 'vs/workbench/api/common/extHostLanguageFeatures';
+import { ExtHostOutputService } from 'vs/workbench/api/common/extHostOutput';
 
 /**
  * Factory interface for creating an instance of the Positron API.
@@ -45,10 +46,7 @@ export function createPositronApiFactoryAndRegisterActors(accessor: ServicesAcce
 	// VS Code API can share a single instance of `ExtHostWebViews`, which is
 	// necessary since the instance effectively needs to be a singleton.
 	const extHostWebviews: ExtHostWebviews = rpcProtocol.getRaw(ExtHostContext.ExtHostWebviews);
-	if (!extHostWebviews) {
-		throw new Error('Could not retrieve ExtHostWebviews from the RPC protocol. ' +
-			' The VS Code API must be created before the Positron API.');
-	}
+	const extHostOutputService: ExtHostOutputService = rpcProtocol.getRaw(ExtHostContext.ExtHostOutputService);
 
 	// Same deal for the `ExtHostLanguageFeatures` object
 	const extHostLanguageFeatures: ExtHostLanguageFeatures =
@@ -87,6 +85,9 @@ export function createPositronApiFactoryAndRegisterActors(accessor: ServicesAcce
 		const window: typeof positron.window = {
 			createPreviewPanel(viewType: string, title: string, preserveFocus?: boolean, options?: vscode.WebviewPanelOptions & vscode.WebviewOptions) {
 				return extHostPreviewPanels.createPreviewPanel(extension, viewType, title, preserveFocus, options);
+			},
+			createRawLogOutputChannel(name: string): vscode.OutputChannel {
+				return extHostOutputService.createRawLogOutputChannel(name, extension);
 			}
 		};
 

src/vs/workbench/services/extensions/common/rpcProtocol.ts

@@ -256,7 +256,8 @@ export class RPCProtocol extends Disposable implements IRPCProtocol {
 	 */
 	public getRaw<T, R extends T>(identifier: ProxyIdentifier<T>): R {
 		if (!this._locals[identifier.nid]) {
-			throw new Error(`Missing actor ${identifier.sid}`);
+			throw new Error(`Missing actor ${identifier.sid}.` +
+				' The VS Code API must be created before the Positron API.');
 		}
 		return this._locals[identifier.nid];
 	}