Inject code to send telemetry to Application Insight when register commands.

Usage

Examples

• Initialize the wrapper on activation.

  import { initialize, instrumentOperation } from "vscode-extension-telemetry-wrapper";
  export async function activate(context: vscode.ExtensionContext): Promise<void> {
      // initialize the wrapper.
      await initialize(extensionId, extensionVersion, aiKey);
  
      // It instruments the activate operation to send related events.
      await instrumentOperation("activation", doActivate)(context);
  }
  
  async function doActivate(_operationId: string, context: vscode.ExtensionContext): Promise<void> {
      // Move your code here.
  }

• Instrument your VS Code command.

  const name = "my.hello";
  const myHello = (...args) => {
      vscode.window.showInformationMessage("Hello: " + args.join(" "));
  };
  
  // without the wrapper
  const myCommand = vscode.commands.registerCommand(name, myHello);
  
  // with the wrapper
  const myCommand = instrumentOperationAsVsCodeCommand(name, myHello);

• Instrument an operation with multiple steps.

  const name = "my.multiStepTask";
  const step1 = () => {
      vscode.window.showInformationMessage("Step 1: Start.");
  }
  const step2 = (...args) => {
      vscode.window.showInformationMessage("Step 2: " + args.join(" "));
  }
  
  // without the wrapper.
  const multiStepTask = (...args) => {
      step1();
      step2(..args);
  };
  vscode.commands.registerCommand(name, multiStepTask);
  
  // with the wrapper.
  // operationId contains a unique Id for each execution of the task.
  const instrumentedMultiStepTask = instrumentOperation(name, (operationId, ...args) => {
      instrumentOperationStep(operationId, "step1", step1)();
      instrumentOperationStep(operationId, "step2", step2)(...args);
  });
  vscode.commands.registerCommand(name, instrumentedMultiStepTask);

• Mark an Error as user error.

  try {
      // ...
  } catch (err: Error) {
      setUserError(err);
      // do something with the user error.
      throw(err);
  }

• Set error code for an Error.

  try {
      // ...
  } catch (err: Error) {
      // The error code should be a non-zero integer.
      const ERROR_FILE_NOT_FOUND = 2;
      setErrorCode(err, ERROR_FILE_NOT_FOUND);
      throw(err);
  }

Exported APIs

Initialize.

/**
 * Initialize TelemetryReporter by parsing attributes from a JSON file.
 * It reads these attributes: publisher, name, version, aiKey.
 * @param jsonFilepath absolute path of a JSON file.
 */
function initializeFromJsonFile(jsonFilepath: string, options?: IOptions): Promise<void>;

/**
 * Initialize TelemetryReporter from given attributes.
 * @param extensionId Identifier of the extension, used as prefix of EventName in telemetry data.
 * @param version Version of the extension.
 * @param aiKey Key of Application Insights.
 */
function initialize(extensionId: string, version: string, aiKey: string, options?: IOptions): void;

Note: a) if options.debug or process.env.DEBUG_TELEMETRY is set to true, events will be also print to Output Telemetry Wrapper. b) if options.firstParty is set true, sensitive information will be wiped out from events for GDPR concern.

Instrumentation.

• Instrument an operation.

/**
 * Instrument callback for a command to auto send OPEARTION_START, OPERATION_END, ERROR telemetry.
 * @param operationName For extension activation, use "activation", for VS Code commands, use command name.
 * @param cb The callback function with a unique Id passed by its 1st parameter.
 * @returns The instrumented callback.
 */
function instrumentOperation(operationName: string, cb: (_operationId: string, ...args: any[]) => any): (...args: any[]) => any;

• Instrument a VS Code command.

/**
 * A shortcut to instrument and operation and register it as a VSCode command.
 * Note that operation Id will no longer be accessible in this approach.
 * @param command A unique identifier for the command.
 * @param cb A command handler function.
 */
export function instrumentOperationAsVsCodeCommand(command: string, cb: (...args: any[]) => any): vscode.Disposable;

Mark on an Error.

/**
 * Mark an Error instance as a user error.
 */
function setUserError(err: Error): void;

/**
 * Set custom error code or an Error instance.
 * @param errorCode A custom error code.
 */
function setErrorCode(err: Error, errorCode: number): void;

Send events.

/**
 * Send OPERATION_START event.
 * @param operationId Unique id of the operation.
 * @param operationName Name of the operation.
 */
function sendOperationStart(operationId: string, operationName: string): void;

/**
 * Send OPERATION_END event.
 * @param operationId Unique id of the operation.
 * @param operationName Name of the operation.
 * @param duration Time elapsed for the operation, in milliseconds.
 * @param err An optional Error instance if occurs during the operation.
 */
function sendOperationEnd(operationId: string, operationName: string, duration: number, err?: Error): void;

/**
 * Send an ERROR event.
 * @param err An Error instance.
 */
export declare function sendError(err: Error): void;

/**
 * Send an ERROR event during an operation, carrying id and name of the oepration.
 * @param operationId Unique id of the operation.
 * @param operationName Name of the operation.
 * @param err An Error instance containing details.
 */
function sendOperationalError(operationId: string, operationName: string, err: Error): void;

 /**
  * Send an INFO event during an operation.
  * @param operationId Unique id of the operation.
  * @param data Values of string type go to customDimensions, values of number type go to customMeasurements.
  */
export function sendInfo(operationId: string, data: { [key: string]: string | number }): void;

/**
 * Send an INFO event during an operation.
 * Note that: operationId will overwrite dimensions['operationId'] if it exists.
 * @param operationId Unique id of the operation.
 * @param dimensions The object recorded as customDimensions.
 * @param measurements The object recored as customMeasurements.
 */
export function sendInfo(
    operationId: string,
    dimensions: { [key: string]: string },
    measurements: { [key: string]: number }
): void;

Create a Unique Id.

/**
 * Create a UUID string using uuid.v4().
 */
function createUuid(): string;