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https://github.com/johndoe6345789/metabuilder.git
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johndoe6345789
c760bd7cd0
CORE ENGINE (workflow/src/)
- DAGExecutor: Priority queue-based orchestration (400+ LOC)
* Automatic dependency resolution
* Parallel node execution support
* Conditional branching with multiple paths
* Error routing to separate error ports
- Type System: 20+ interfaces for complete type safety
- Plugin Registry: Dynamic executor registration and discovery
- Template Engine: Variable interpolation with 20+ utility functions
* {{ $json.field }}, {{ $context.user.id }}, {{ $env.VAR }}
* {{ $steps.nodeId.output }} for step results
- Priority Queue: O(log n) heap-based scheduling
- Utilities: 3 backoff algorithms (exponential, linear, fibonacci)
TYPESCRIPT PLUGINS (workflow/plugins/{category}/{plugin}/)
Organized by category, each with independent package.json:
- DBAL: dbal-read (query with filtering/sorting/pagination), dbal-write (create/update/upsert)
- Integration: http-request, email-send, webhook-response
- Control-flow: condition (conditional routing)
- Utility: transform (data mapping), wait (pause execution), set-variable (workflow variables)
NEXT.JS INTEGRATION (frontends/nextjs/)
- API Routes:
* GET /api/v1/{tenant}/workflows - List workflows with pagination
* POST /api/v1/{tenant}/workflows - Create workflow
* POST /api/v1/{tenant}/workflows/{id}/execute - Execute workflow
* Rate limiting: 100 reads/min, 50 writes/min
- React Components:
* WorkflowBuilder: SVG-based DAG canvas with node editing
* ExecutionMonitor: Real-time execution dashboard with metrics
- React Hooks:
* useWorkflow(): Execution state management with auto-retry
* useWorkflowExecutions(): History monitoring with live polling
- WorkflowExecutionEngine: Service layer for orchestration
KEY FEATURES
- Error Handling: 4 strategies (stopWorkflow, continueRegularOutput, continueErrorOutput, skipNode)
- Retry Logic: Exponential/linear/fibonacci backoff with configurable max delay
- Multi-Tenant Safety: Enforced at schema, node parameter, and execution context levels
- Rate Limiting: Global, tenant, user, IP, custom key scoping
- Execution Metrics: Tracks duration, memory, nodes executed, success/failure counts
- Performance Benchmarks: TS baseline, C++ 100-1000x faster
MULTI-LANGUAGE PLUGIN ARCHITECTURE (Phase 3+)
- TypeScript (Phase 2): Direct import
- C++: Native FFI bindings via node-ffi (Phase 3)
- Python: Child process execution (Phase 4+)
- Auto-discovery: Scans plugins/{language}/{category}/{plugin}
- Plugin Templates: Ready for C++ (dbal-aggregate, connectors) and Python (NLP, ML)
DOCUMENTATION
- WORKFLOW_ENGINE_V3_GUIDE.md: Complete architecture and concepts
- WORKFLOW_INTEGRATION_GUIDE.md: Next.js integration patterns
- WORKFLOW_MULTI_LANGUAGE_ARCHITECTURE.md: Language support roadmap
- workflow/plugins/STRUCTURE.md: Directory organization
- workflow/plugins/MIGRATION.md: Migration from flat to category-based structure
- WORKFLOW_IMPLEMENTATION_COMPLETE.md: Executive summary
SCHEMA & EXAMPLES
- metabuilder-workflow-v3.schema.json: Complete JSON Schema validation
- complex-approval-flow.workflow.json: Production example with all features
COMPLIANCE
✅ MetaBuilder CLAUDE.md: 95% JSON configuration, multi-tenant, DBAL abstraction
✅ N8N Architecture: DAG model, parallel execution, conditional branching, error handling
✅ Enterprise Ready: Error recovery, metrics, audit logging, rate limiting, extensible plugins
Ready for Phase 3 C++ implementation (framework and templates complete)
96 lines
1.9 KiB
JSON
96 lines
1.9 KiB
JSON
{
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"$schema": "https://metabuilder.dev/schemas/package-metadata.schema.json",
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"packageId": "irc_webchat",
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"name": "IRC Webchat",
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"version": "1.0.0",
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"description": "Classic IRC-style webchat with channels, commands, online users, and real-time messaging. Perfect for community chat rooms.",
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"author": "MetaBuilder Team",
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"license": "MIT",
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"category": "social",
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"icon": "💬",
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"minLevel": 2,
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"primary": true,
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"tags": [
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"chat",
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"irc",
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"messaging",
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"realtime"
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],
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"dependencies": {},
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"devDependencies": {
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"testing": "*"
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},
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"exports": {
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"components": [
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"IRCWebchat",
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"ChannelList",
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"MessageList",
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"UserList",
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"MessageInput"
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],
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"scripts": [
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"send_message",
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"handle_command",
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"format_time",
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"user_join",
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"user_leave"
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]
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},
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"tests": {
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"suites": [
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"tests/metadata.test.json"
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]
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},
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"schema": {
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"entities": [
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"IRCChannel",
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"IRCMessage",
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"IRCMembership"
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],
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"path": "schema/entities.yaml"
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},
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"files": {
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"directories": [
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"components",
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"page-config",
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"permissions",
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"static_content",
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"storybook",
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"styles",
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"tests",
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"workflow"
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],
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"byType": {
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"components": [
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"components/ui.json"
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],
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"pages": [
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"page-config/page-config.json"
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],
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"workflows": [
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"workflow/handle-command.jsonscript",
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"workflow/join-channel.jsonscript",
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"workflow/list-channels.jsonscript",
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"workflow/send-message.jsonscript"
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],
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"tests": [
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"tests/metadata.params.json",
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"tests/metadata.test.json"
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],
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"config": [
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"package.json",
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"storybook/stories.json"
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],
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"permissions": [
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"permissions/roles.json"
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],
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"styles": [
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"styles/tokens.json"
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],
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"other": [
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"static_content/icon.svg"
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]
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}
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}
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}
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