fix: add ability to stop containerless function

packages/salesforcedx-vscode-core/package.json

@@ -25,7 +25,7 @@
     "Other"
   ],
   "dependencies": {
-    "@heroku/functions-core": "^0.2.7",
+    "@heroku/functions-core": "^0.3.0",
     "@salesforce/core": "^2.35.0",
     "@salesforce/salesforcedx-sobjects-faux-generator": "54.8.0",
     "@salesforce/salesforcedx-utils-vscode": "54.8.0",

packages/salesforcedx-vscode-core/src/commands/functions/forceFunctionContainerlessStartCommand.ts

@@ -21,7 +21,7 @@ export const CONTAINER_START_TEXT_KEY =
 export const FUNCTION_CONTAINER_LOG_NAME = 'force_function_containerless_start';
 
 /**
- * Executes sfdx run:function:start:local --verbose
+ * Starts a local run of the function which can then be invoked with payloads.
  * @param sourceUri
  */
 export const forceFunctionContainerlessStartCommand = async (

packages/salesforcedx-vscode-core/src/commands/functions/forceFunctionStart/ForceFunctionContainerlessStartExecutor.ts

@@ -5,7 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
-import { LocalRun } from '@heroku/functions-core';
+import { LocalRun, LocalRunProcess } from '@heroku/functions-core';
 import { Disposable } from 'vscode';
 import { channelService } from '../../../channels';
 import { nls } from '../../../messages';
@@ -19,14 +19,19 @@ import {
 import { ForceFunctionStartExecutor } from './ForceFunctionStartExecutor';
 
 export class ForceFunctionContainerlessStartExecutor extends ForceFunctionStartExecutor {
+  private process: LocalRunProcess | undefined;
+
   public async setupFunctionListeners(): Promise<void> {
     console.log('No listeners for containerless function.');
   }
 
   public async cancelFunction(
     registeredStartedFunctionDisposable: Disposable
   ): Promise<void> {
-    // TODO: how to stop the localRun
+    if (this.process && !this.process.cancelled) {
+      this.process.cancel();
+      this.process = undefined;
+    }
     registeredStartedFunctionDisposable.dispose();
   }
 
@@ -51,10 +56,8 @@ export class ForceFunctionContainerlessStartExecutor extends ForceFunctionStartE
 
     localRun
       .exec()
-      .then(msg => {
-        console.log(
-          `localRun resolved in ForceFunctionContainerlessStartExecutor with message: ${msg}`
-        );
+      .then(process => {
+        this.process = process;
       })
       .catch((err: Error) => {
         const errorNotificationMessage = nls.localize(

packages/salesforcedx-vscode-core/test/vscode-integration/commands/functions/forceFunctionStart/ForceFunctionContainerlessStartExecutor.test.ts

@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
+import { LocalRunProcess } from '@heroku/functions-core';
 import { vscodeStub } from '@salesforce/salesforcedx-utils-vscode/out/test/unit/commands/mocks';
 import { expect } from 'chai';
 import * as proxyquire from 'proxyquire';
@@ -216,19 +217,14 @@ describe('ForceFunctionContainerlessStartExecutor unit tests', () => {
   });
 
   it('Should be able to call methods that are no-ops for containerless mode.', async () => {
-    const disposable = { dispose: stub() };
     const executor = new ForceFunctionContainerlessStartExecutor(
       START_KEY,
       LOG_NAME
     );
     const listenerResult = await executor.setupFunctionListeners(
-      'funDirPath',
-      disposable
+      'funDirPath'
     );
     expect(listenerResult).to.equal(undefined);
-    const cancelResult = await executor.cancelFunction(disposable);
-    expect(cancelResult).to.equal(undefined);
-    assert.calledOnce(disposable.dispose);
     const buildResult = await executor.buildFunction('nameMe', 'funDirPath');
     expect(buildResult).to.equal(undefined);
   });
@@ -260,7 +256,32 @@ describe('ForceFunctionContainerlessStartExecutor unit tests', () => {
     assert.calledOnce(fakeLocalRunInst.exec);
   });
 
-  it('Should call telementry when localRun fails.', async () => {
+  it('Should be able to cancel running function.', async () => {
+    const fakeProcess = { cancel: stub().resolves() };
+    const fakeLocalRunInst = {
+      exec: stub().resolves(fakeProcess)
+    };
+    const disposable = {
+      dispose: stub()
+    };
+    const executor = new ForceFunctionContainerlessStartExecutor(
+      START_KEY,
+      LOG_NAME
+    );
+    localRunConstructorStub.returns(fakeLocalRunInst);
+
+    // Sets the local process
+    await executor.startFunction('foo', 'bar');
+
+    // have to wait for the unawaited promise in exec().then() to resolve
+    await Promise.resolve();
+
+    await executor.cancelFunction(disposable);
+    assert.calledOnce(fakeProcess.cancel);
+    assert.calledOnce(disposable.dispose);
+  });
+
+  it('Should call telemetry when localRun fails.', async () => {
     const fakeType = 'typescript';
     getFunctionTypeStub.returns(fakeType);
     const errMessage = 'oh noes. FAIL';