refactor: Remove deprecated queue events bus functionality (cube-js#9815)

The queue event bus was deprecated and is no longer needed.

Author: ovr

.gitignore

@@ -24,3 +24,4 @@ rust/cubesql/profile.json
 .cubestore
 .env
 .vimspector.json
+.claude/settings.local.json

CLAUDE.md

@@ -0,0 +1,137 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Repository Overview
+
+Cube is a semantic layer for building data applications. This is a monorepo containing the complete Cube ecosystem including:
+- Cube backend server and core components
+- Client libraries for JavaScript/React/Vue/Angular
+- Database drivers for various data sources
+- Documentation site
+- Rust components (CubeSQL, CubeStore)
+
+## Development Commands
+
+**Note: This project uses Yarn as the package manager.**
+
+### Core Build Commands
+```bash
+# Build all packages
+yarn build
+
+# Run TypeScript compilation across all packages
+yarn tsc
+
+# Watch mode for TypeScript compilation
+yarn tsc:watch
+
+# Clean build artifacts
+yarn clean
+
+# Run linting across all packages
+yarn lint
+
+# Fix linting issues
+yarn lint:fix
+
+# Lint package.json files
+yarn lint:npm
+```
+
+### Testing Commands
+```bash
+# Run tests (most packages have individual test commands)
+yarn test
+
+# Test individual packages
+cd packages/cubejs-[package-name]
+yarn test
+```
+
+### Documentation Development
+The documentation is in `/docs` directory:
+```bash
+cd docs
+yarn dev    # Start development server
+yarn build  # Build for production
+```
+
+## Architecture Overview
+
+### Monorepo Structure
+- **`/packages`**: All JavaScript/TypeScript packages managed by Lerna
+  - Core packages: `cubejs-server-core`, `cubejs-schema-compiler`, `cubejs-query-orchestrator` 
+  - Client libraries: `cubejs-client-core`, `cubejs-client-react`, etc.
+  - Database drivers: `cubejs-postgres-driver`, `cubejs-bigquery-driver`, etc.
+  - API layer: `cubejs-api-gateway`
+- **`/rust`**: Rust components including CubeSQL (SQL interface) and CubeStore (distributed storage)
+- **`/docs`**: Next.js documentation site
+- **`/examples`**: Example implementations and recipes
+
+### Key Components
+1. **Schema Compiler**: Compiles data models into executable queries
+2. **Query Orchestrator**: Manages query execution, caching, and pre-aggregations
+3. **API Gateway**: Provides REST, GraphQL, and SQL APIs
+4. **CubeSQL**: Postgres-compatible SQL interface (Rust)
+5. **CubeStore**: Distributed OLAP storage engine (Rust)
+
+### Package Management
+- Uses Yarn workspaces with Lerna for package management
+- TypeScript compilation is coordinated across packages
+- Jest for unit testing with package-specific configurations
+
+## Testing Approach
+
+### Unit Tests
+- Most packages have Jest-based unit tests in `/test` directories
+- TypeScript packages use `jest.config.js` with TypeScript compilation
+- Snapshot testing for SQL compilation and query planning
+
+### Integration Tests
+- Driver-specific integration tests in `/packages/cubejs-testing-drivers`
+- End-to-end tests in `/packages/cubejs-testing`
+- Docker-based testing environments for database drivers
+
+### Test Commands
+```bash
+# Individual package testing
+cd packages/[package-name]
+yarn test
+
+# Driver integration tests (requires Docker)
+cd packages/cubejs-testing-drivers
+yarn test
+```
+
+## Development Workflow
+
+1. **Making Changes**: Work in individual packages, changes are coordinated via Lerna
+2. **Building**: Use `yarn tsc` to compile TypeScript across all packages
+3. **Testing**: Run relevant tests for modified packages
+4. **Linting**: Ensure code passes `yarn lint` before committing
+
+## Common File Patterns
+
+- `*.test.ts/js`: Jest unit tests
+- `jest.config.js`: Jest configuration per package
+- `tsconfig.json`: TypeScript configuration (inherits from root)
+- `CHANGELOG.md`: Per-package changelogs maintained by Lerna
+- `src/`: Source code directory
+- `dist/`: Compiled output (not committed)
+
+## Important Notes
+
+- This is documentation for the old Cube docs site structure (the existing `/docs/CLAUDE.md` refers to the documentation site)
+- The main Cube application development happens in `/packages`
+- For data model changes, focus on `cubejs-schema-compiler` package
+- For query execution changes, focus on `cubejs-query-orchestrator` package
+- Database connectivity is handled by individual driver packages
+
+## Key Dependencies
+
+- **Lerna**: Monorepo management and publishing
+- **TypeScript**: Primary language for most packages
+- **Jest**: Testing framework
+- **Rollup**: Bundling for client libraries
+- **Docker**: Testing environments for database drivers

packages/cubejs-api-gateway/src/SubscriptionServer.ts

@@ -12,7 +12,6 @@ const methodParams: Record<string, string[]> = {
   meta: [],
   subscribe: ['query', 'queryType'],
   unsubscribe: [],
-  'subscribe.queue.events': []
 };
 
 const calcMessageLength = (message: unknown) => Buffer.byteLength(
@@ -149,8 +148,6 @@ export class SubscriptionServer {
   }
 
   public async disconnect(connectionId: string) {
-    const authContext = await this.subscriptionStore.getAuthContext(connectionId);
-    await this.apiGateway.unSubscribeQueueEvents({ context: authContext, connectionId });
     await this.subscriptionStore.cleanupSubscriptions(connectionId);
   }
 

packages/cubejs-api-gateway/src/gateway.ts

@@ -2067,21 +2067,6 @@ class ApiGateway {
     }
   }
 
-  public async subscribeQueueEvents({ context, signedWithPlaygroundAuthSecret, connectionId, res }) {
-    if (this.enforceSecurityChecks && !signedWithPlaygroundAuthSecret) {
-      throw new CubejsHandlerError(
-        403,
-        'Forbidden',
-        'Only for signed with playground auth secret'
-      );
-    }
-    return (await this.getAdapterApi(context)).subscribeQueueEvents(connectionId, res);
-  }
-
-  public async unSubscribeQueueEvents({ context, connectionId }) {
-    return (await this.getAdapterApi(context)).unSubscribeQueueEvents(connectionId);
-  }
-
   public async subscribe({
     query, context, res, subscribe, subscriptionState, queryType, apiType
   }) {

packages/cubejs-backend-shared/src/env.ts

@@ -2090,9 +2090,6 @@ const variables: Record<string, (...args: any) => any> = {
   livePreview: () => get('CUBEJS_LIVE_PREVIEW')
     .default('true')
     .asBoolStrict(),
-  preAggregationsQueueEventsBus: () => get('CUBEJS_PRE_AGGREGATIONS_QUEUE_EVENTS_BUS')
-    .default('false')
-    .asBoolStrict(),
   externalDefault: () => get('CUBEJS_EXTERNAL_DEFAULT')
     .default('true')
     .asBoolStrict(),

packages/cubejs-base-driver/src/queue-driver.interface.ts

@@ -52,7 +52,6 @@ export interface QueueDriverOptions {
   continueWaitTimeout: number,
   orphanedTimeout: number,
   heartBeatTimeout: number,
-  getQueueEventsBus?: any,
   processUid?: string;
 }
 

packages/cubejs-query-orchestrator/CLAUDE.md

@@ -0,0 +1,131 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Package Overview
+
+The Query Orchestrator is a multi-stage querying engine that manages query execution, caching, and pre-aggregations in Cube. It receives pre-aggregation SQL queries and executes them in exact order, ensuring up-to-date data structure and freshness.
+
+## Development Commands
+
+**Note: This project uses Yarn as the package manager.**
+
+```bash
+# Build the package
+yarn build
+
+# Build with TypeScript compilation
+yarn tsc
+
+# Watch mode for development
+yarn watch
+
+# Run all tests (unit + integration)
+yarn test
+
+# Run only unit tests
+yarn unit
+
+# Run only integration tests  
+yarn integration
+
+# Run CubeStore integration tests specifically
+yarn integration:cubestore
+
+# Run linting
+yarn lint
+
+# Fix linting issues
+yarn lint:fix
+```
+
+## Architecture Overview
+
+### Core Components
+
+The Query Orchestrator consists of several interconnected components:
+
+1. **QueryOrchestrator** (`src/orchestrator/QueryOrchestrator.ts`): Main orchestration class that coordinates query execution and manages drivers
+2. **QueryCache** (`src/orchestrator/QueryCache.ts`): Handles query result caching with configurable cache drivers  
+3. **QueryQueue** (`src/orchestrator/QueryQueue.js`): Manages query queuing and background processing
+4. **PreAggregations** (`src/orchestrator/PreAggregations.ts`): Manages pre-aggregation building and loading
+5. **DriverFactory** (`src/orchestrator/DriverFactory.ts`): Creates and manages database driver instances
+
+### Cache and Queue Driver Architecture
+
+The orchestrator supports multiple backend drivers:
+- **Memory**: In-memory caching and queuing (development)
+- **CubeStore**: Distributed storage engine (production) 
+- **Redis**: External Redis-based caching (legacy, being phased out)
+
+Driver selection logic in `QueryOrchestrator.ts:detectQueueAndCacheDriver()`:
+- Explicit configuration via `cacheAndQueueDriver` option
+- Environment variables (`CUBEJS_CACHE_AND_QUEUE_DRIVER`)
+- Auto-detection: Redis if `CUBEJS_REDIS_URL` exists, CubeStore for production, Memory for development
+
+### Query Processing Flow
+
+1. **Query Submission**: Queries enter through QueryOrchestrator
+2. **Cache Check**: QueryCache checks for existing results
+3. **Queue Management**: QueryQueue handles background execution
+4. **Pre-aggregation Processing**: PreAggregations component manages rollup tables
+5. **Result Caching**: Results stored via cache driver for future requests
+
+### Pre-aggregation System
+
+The pre-aggregation system includes:
+- **PreAggregationLoader**: Loads pre-aggregation definitions
+- **PreAggregationPartitionRangeLoader**: Handles partition range loading
+- **PreAggregationLoadCache**: Manages loading cache for pre-aggregations
+
+## Testing Structure
+
+### Unit Tests (`test/unit/`)
+- `QueryCache.test.ts`: Query caching functionality
+- `QueryQueue.test.ts`: Queue management and processing
+- `QueryOrchestrator.test.js`: Main orchestrator logic
+- `PreAggregations.test.js`: Pre-aggregation management
+
+### Integration Tests (`test/integration/`)
+- `cubestore/`: CubeStore-specific integration tests
+- Tests real database interactions and queue processing
+
+### Test Abstractions
+- `QueryCache.abstract.ts`: Shared test suite for cache implementations
+- `QueryQueue.abstract.ts`: Shared test suite for queue implementations
+
+## Key Design Patterns
+
+### Queue Processing Architecture
+The DEVELOPMENT.md file contains detailed sequence diagrams showing:
+- Queue interaction with CubeStore via specific queue commands (`QUEUE ADD`, `QUEUE RETRIEVE`, etc.)
+- Background query processing with heartbeat management
+- Result handling and cleanup
+
+### Driver Factory Pattern
+- `DriverFactory` type enables pluggable database drivers
+- `DriverFactoryByDataSource` supports multi-tenant scenarios
+- Separation between external (user data) and internal (cache/queue) drivers
+
+### Error Handling
+- `ContinueWaitError`: Signals when queries should continue waiting
+- `TimeoutError`: Handles query timeout scenarios
+- Proper cleanup and resource management across all components
+
+## Configuration
+
+Key configuration options in `QueryOrchestratorOptions`:
+- `externalDriverFactory`: Database driver for user data
+- `cacheAndQueueDriver`: Backend for caching and queuing
+- `queryCacheOptions`: Cache-specific settings
+- `preAggregationsOptions`: Pre-aggregation configuration
+- `rollupOnlyMode`: When enabled, only serves pre-aggregated data
+- `continueWaitTimeout`: Timeout for waiting operations
+
+## Development Notes
+
+- Uses TypeScript with relaxed strict settings (`tsconfig.json`)
+- Inherits linting rules from `@cubejs-backend/linter`
+- Jest configuration extends base repository config
+- Docker Compose setup for integration testing
+- Coverage reports generated in `coverage/` directory