init impl for special behaviour for temporal prefixes. Default signal test needs to be fixed, need to add behaviour reserving prefixes from workflows, and waiting for default update to be merged to add behaviour preventing default update handler to be called with reserved names

Author: THardy98

packages/common/src/reserved.ts

@@ -0,0 +1,20 @@
+export const TEMPORAL_RESERVED_PREFIX = '__temporal_'
+export const STACK_TRACE_RESERVED_PREFIX = '__stack_trace'
+export const ENHANCED_STACK_TRACE_RESERVED_PREFIX = '__enhanced_stack_trace'
+
+export const reservedPrefixes = [TEMPORAL_RESERVED_PREFIX, STACK_TRACE_RESERVED_PREFIX, ENHANCED_STACK_TRACE_RESERVED_PREFIX]
+
+export function throwIfReservedName(type: string, name: string) {
+    const prefix = isReservedName(name)
+    if (prefix) {
+        throw Error(`Cannot register ${type} name: '${name}', with reserved prefix: '${prefix}'`)
+    }
+}
+
+export function isReservedName(name: string): string | undefined {
+    for (const prefix of reservedPrefixes) {
+        if (name.startsWith(prefix)) {
+            return prefix
+        }
+    }
+}

packages/test/src/test-integration-split-two.ts

@@ -14,11 +14,12 @@ import {
 import { msToNumber, tsToMs } from '@temporalio/common/lib/time';
 import { decode as payloadDecode, decodeFromPayloadsAtIndex } from '@temporalio/common/lib/internal-non-workflow';
 
-import { condition, defineQuery, defineSignal, setDefaultQueryHandler, setHandler, sleep } from '@temporalio/workflow';
+import { condition, defineQuery, defineSignal, defineUpdate, setDefaultQueryHandler, setDefaultSignalHandler, setHandler, sleep } from '@temporalio/workflow';
 import { configurableHelpers, createTestWorkflowBundle } from './helpers-integration';
 import * as activities from './activities';
 import * as workflows from './workflows';
 import { makeTestFn, configMacro } from './helpers-integration-multi-codec';
+import { reservedPrefixes } from '@temporalio/common/src/reserved';
 
 // Note: re-export shared workflows (or long workflows)
 //  - review the files where these workflows are shared
@@ -751,3 +752,78 @@ test('default query handler is not used if requested query exists', configMacro,
     t.deepEqual(result, { name: definedQuery.name, args });
   });
 });
+
+test('Cannot register activities using reserved prefixes', configMacro, async (t, config) => {
+  const { createWorkerWithDefaults } = config;
+
+  for (const prefix of reservedPrefixes) {
+    const activityName = prefix + "_test"
+    await t.throwsAsync(createWorkerWithDefaults(t, {
+      activities: { [activityName]: () => {} }
+    }), { instanceOf: Error, message: `Cannot register activity name: '${activityName}', with reserved prefix: '${prefix}'`})
+  }
+})
+
+test('Cannot register task queues using reserved prefixes', configMacro, async (t, config) => {
+  const { createWorkerWithDefaults } = config;
+
+  for (const prefix of reservedPrefixes) {
+    const taskQueue = prefix + "_test"
+
+    await t.throwsAsync(createWorkerWithDefaults(t, {
+      taskQueue,
+    }), { instanceOf: Error, message: `Cannot register task queue name: '${taskQueue}', with reserved prefix: '${prefix}'`})
+  }
+})
+
+interface HandlerError {
+  name: string;
+  message: string;
+}
+
+export async function workflowBadPrefixHandler(prefix: string): Promise<HandlerError[]> {
+  // Re-package errors, default payload converter has trouble converting native errors (no 'data' field).
+  const expectedErrors: HandlerError[] = []
+  try {
+    setHandler(defineSignal(prefix + '_signal'), () => {})
+  } catch (e) {
+    if (e instanceof Error) {
+      expectedErrors.push({ name: e.name, message: e.message })
+    }
+  }
+  try {
+    setHandler(defineUpdate(prefix + '_update'), () => {})
+  } catch (e) {
+    if (e instanceof Error) {
+      expectedErrors.push({ name: e.name, message: e.message })
+    }
+  }
+  try {
+    setHandler(defineQuery(prefix + '_query'), () => {})
+  } catch (e) {
+    if (e instanceof Error) {
+      expectedErrors.push({ name: e.name, message: e.message })
+    }
+  }
+  return expectedErrors
+}
+
+test('Workflow failure if define signals/updates/queries with reserved prefixes', configMacro, async (t, config) => {
+    const { env, createWorkerWithDefaults } = config;
+    const { executeWorkflow } = configurableHelpers(t, t.context.workflowBundle, env);
+    const worker = await createWorkerWithDefaults(t);
+    await worker.runUntil(async () => {
+      const prefix = reservedPrefixes[0]
+      // for (const prefix of reservedPrefixes) {
+        const result = await executeWorkflow(workflowBadPrefixHandler, {
+          args: [prefix]
+        });
+        console.log("result", result)
+        t.deepEqual(result, [
+          { name: 'Error', message: `Cannot register signal name: '${prefix}_signal', with reserved prefix: '${prefix}'`},
+          { name: 'Error', message: `Cannot register update name: '${prefix}_update', with reserved prefix: '${prefix}'`},
+          { name: 'Error', message: `Cannot register query name: '${prefix}_query', with reserved prefix: '${prefix}'`},
+        ])
+      // }
+    })
+})

packages/test/src/test-workflows.ts

@@ -23,6 +23,7 @@ import { parseWorkflowCode } from '@temporalio/worker/lib/worker';
 import * as activityFunctions from './activities';
 import { cleanStackTrace, REUSE_V8_CONTEXT, u8 } from './helpers';
 import { ProcessedSignal } from './workflows';
+import { reservedPrefixes } from '@temporalio/common/src/reserved';
 
 export interface Context {
   workflow: VMWorkflow | ReusableVMWorkflow;
@@ -2528,3 +2529,77 @@ test('Signals/Updates/Activities/Timers - Trace promises completion order - 1.11
     );
   }
 });
+
+test('Default query handler fail activations with reserved names - workflowWithDefaultHandlers', async (t) => {
+  const { workflowType } = t.context;
+  
+  await activate(
+    t,
+    makeActivation(
+      undefined, 
+      makeInitializeWorkflowJob(workflowType),
+    ),
+  );
+
+  for (const prefix of reservedPrefixes) {
+    const completion = await activate(
+      t,
+      makeActivation(
+        undefined, 
+        makeQueryWorkflowJob("1", prefix + '_query')
+      ),
+    );
+
+    compareCompletion(
+      t,
+      completion,
+      {
+        failed: {
+          failure: {
+            ...completion.failed?.failure,
+            // We only care about the error message.
+            message: `Cannot register query name: \'${prefix}_query\', with reserved prefix: \'${prefix}\'`,
+          }
+        }
+      }
+    );
+  }
+});
+
+test('Default signal handler fail activations with reserved names - workflowWithDefaultHandlers', async (t) => {
+  const { workflowType } = t.context;
+  
+  await activate(
+    t,
+    makeActivation(
+      undefined, 
+      makeInitializeWorkflowJob(workflowType),
+    ),
+  );
+
+  for (const prefix of reservedPrefixes) {
+    const job = makeSignalWorkflowJob(prefix + '_signal', []);
+
+    const completion = await activate(
+      t,
+      makeActivation(
+        undefined,
+        job
+      ),
+    );
+
+    compareCompletion(
+      t,
+      completion,
+      {
+        failed: {
+          failure: {
+            ...completion.failed?.failure,
+            // We only care about the error message.
+            message: `Cannot register signal name: \'${prefix}_signal\', with reserved prefix: \'${prefix}\'`,
+          }
+        }
+      }
+    );
+  }
+});

packages/test/src/workflows/index.ts

@@ -89,3 +89,4 @@ export * from './upsert-and-read-search-attributes';
 export * from './wait-on-user';
 export * from './workflow-cancellation-scenarios';
 export * from './upsert-and-read-memo';
+export * from './workflow-with-default-handlers';

packages/test/src/workflows/workflow-with-default-handlers.ts

@@ -0,0 +1,10 @@
+import { condition, defineSignal, setDefaultQueryHandler, setDefaultSignalHandler, setHandler } from "@temporalio/workflow";
+
+export async function workflowWithDefaultHandlers() {
+    let complete = true;
+    setDefaultQueryHandler(() => {});
+    setDefaultSignalHandler(() => {});
+    setHandler(defineSignal('completeSignal'), () => {});
+
+    condition(() => complete);
+}

packages/worker/src/worker-options.ts

@@ -18,6 +18,7 @@ import { InjectedSinks } from './sinks';
 import { MiB } from './utils';
 import { WorkflowBundleWithSourceMap } from './workflow/bundler';
 import { asNativeTuner, WorkerTuner } from './worker-tuner';
+import { throwIfReservedName } from '@temporalio/common/src/reserved';
 
 export type { WebpackConfiguration };
 
@@ -822,6 +823,9 @@ export function compileWorkerOptions(rawOpts: WorkerOptions, logger: Logger): Co
   }
 
   const activities = new Map(Object.entries(opts.activities ?? {}).filter(([_, v]) => typeof v === 'function'));
+  for (const activityName of activities.keys()) {
+    throwIfReservedName('activity', activityName)
+  }
   const tuner = asNativeTuner(opts.tuner, logger);
 
   return {

packages/worker/src/worker.ts

@@ -88,6 +88,7 @@ import { ThreadedVMWorkflowCreator } from './workflow/threaded-vm';
 import { VMWorkflowCreator } from './workflow/vm';
 import { WorkflowBundleWithSourceMapAndFilename } from './workflow/workflow-worker-thread/input';
 import { CombinedWorkerRunError, GracefulShutdownPeriodExpiredError, PromiseCompletionTimeoutError } from './errors';
+import { throwIfReservedName } from '@temporalio/common/src/reserved';
 
 export { DataConverter, defaultPayloadConverter };
 
@@ -462,6 +463,7 @@ export class Worker {
    * This method initiates a connection to the server and will throw (asynchronously) on connection failure.
    */
   public static async create(options: WorkerOptions): Promise<Worker> {
+    throwIfReservedName('task queue', options.taskQueue)
     const logger = withMetadata(Runtime.instance().logger, {
       sdkComponent: SdkComponent.worker,
       taskQueue: options.taskQueue ?? 'default',

packages/workflow/src/internals.ts

@@ -48,6 +48,8 @@ import { untrackPromise } from './stack-helpers';
 import pkg from './pkg';
 import { SdkFlag, assertValidFlag } from './flags';
 import { executeWithLifecycleLogging, log } from './logs';
+import { ENHANCED_STACK_TRACE_RESERVED_PREFIX, isReservedName, throwIfReservedName } from '@temporalio/common/src/reserved';
+import { STACK_TRACE_RESERVED_PREFIX } from '../../common/src/reserved';
 
 const StartChildWorkflowExecutionFailedCause = {
   WORKFLOW_ALREADY_EXISTS: 'WORKFLOW_ALREADY_EXISTS',
@@ -249,7 +251,7 @@ export class Activator implements ActivationHandler {
    */
   public readonly queryHandlers = new Map<string, WorkflowQueryAnnotatedType>([
     [
-      '__stack_trace',
+      STACK_TRACE_RESERVED_PREFIX,
       {
         handler: () => {
           return this.getStackTraces()
@@ -260,7 +262,7 @@ export class Activator implements ActivationHandler {
       },
     ],
     [
-      '__enhanced_stack_trace',
+      ENHANCED_STACK_TRACE_RESERVED_PREFIX,
       {
         handler: (): EnhancedStackTrace => {
           const { sourceMap } = this;
@@ -619,6 +621,8 @@ export class Activator implements ActivationHandler {
   protected queryWorkflowNextHandler({ queryName, args }: QueryInput): Promise<unknown> {
     let fn = this.queryHandlers.get(queryName)?.handler;
     if (fn === undefined && this.defaultQueryHandler !== undefined) {
+      // Do not call default query handler with reserved query name.
+      throwIfReservedName('query', queryName)
       fn = this.defaultQueryHandler.bind(this, queryName);
     }
     // No handler or default registered, fail.
@@ -649,17 +653,28 @@ export class Activator implements ActivationHandler {
       throw new TypeError('Missing query activation attributes');
     }
 
+    const queryInput = {
+      queryName: queryType,
+      args: arrayFromPayloads(this.payloadConverter, activation.arguments),
+      queryId,
+      headers: headers ?? {},
+    }
+
+    // Skip interceptors if this is an internal query.
+    if (isReservedName(queryType)) {
+      this.queryWorkflowNextHandler(queryInput).then(
+        (result) => this.completeQuery(queryId, result),
+        (reason) => this.failQuery(queryId, reason)
+      );
+      return
+    }
+
     const execute = composeInterceptors(
       this.interceptors.inbound,
       'handleQuery',
       this.queryWorkflowNextHandler.bind(this)
     );
-    execute({
-      queryName: queryType,
-      args: arrayFromPayloads(this.payloadConverter, activation.arguments),
-      queryId,
-      headers: headers ?? {},
-    }).then(
+    execute(queryInput).then(
       (result) => this.completeQuery(queryId, result),
       (reason) => this.failQuery(queryId, reason)
     );
@@ -797,6 +812,8 @@ export class Activator implements ActivationHandler {
     if (fn) {
       return await fn(...args);
     } else if (this.defaultSignalHandler) {
+      // Do not call default signal handler with reserved signal name.
+      throwIfReservedName('signal', signalName)
       return await this.defaultSignalHandler(signalName, ...args);
     } else {
       throw new IllegalStateError(`No registered signal handler for signal: ${signalName}`);

packages/workflow/src/workflow.ts

@@ -56,6 +56,7 @@ import { LocalActivityDoBackoff } from './errors';
 import { assertInWorkflowContext, getActivator, maybeGetActivator } from './global-attributes';
 import { untrackPromise } from './stack-helpers';
 import { ChildWorkflowHandle, ExternalWorkflowHandle } from './workflow-handle';
+import { throwIfReservedName } from '@temporalio/common/src/reserved';
 
 // Avoid a circular dependency
 registerSleepImplementation(sleep);
@@ -1258,6 +1259,8 @@ export function setHandler<
   options?: QueryHandlerOptions | SignalHandlerOptions | UpdateHandlerOptions<Args>
 ): void {
   const activator = assertInWorkflowContext('Workflow.setHandler(...) may only be used from a Workflow Execution.');
+  // Cannot register handler for reserved names
+  throwIfReservedName(def.type, def.name)
   const description = options?.description;
   if (def.type === 'update') {
     if (typeof handler === 'function') {