# Phase 1.4: Workflow Loading & Registration - Progress Summary **Date:** 2025-01-13 **Status:** Complete - Schema Alignment Fixed **Completion:** 100% --- ## Overview Phase 1.4 implements workflow loading from pack directories and registration as actions in the database. This phase bridges the gap between YAML workflow definitions and the Attune execution system. --- ## Completed Work ### 1. Workflow Loader Module (`executor/src/workflow/loader.rs`) ✅ **Implemented:** - `WorkflowLoader` - Main loader for scanning and parsing workflows - `LoadedWorkflow` - Represents a loaded workflow with validation results - `WorkflowFile` - Metadata about workflow YAML files - `LoaderConfig` - Configuration for loader behavior **Features:** - Scans pack directories for workflow YAML files (`.yaml` and `.yml` extensions) - Parses workflows using the YAML parser from Phase 1.3 - Validates workflows and collects validation errors - Supports file size limits and validation skipping - Async file I/O with Tokio - Comprehensive error handling using `Error::validation()` **Key Methods:** - `load_all_workflows()` - Scan all packs and load workflows - `load_pack_workflows()` - Load workflows from a specific pack - `load_workflow_file()` - Load and validate a single workflow file - `reload_workflow()` - Reload a workflow by reference name **Tests:** - ✅ Scan pack directories - ✅ Scan workflow files - ✅ Load workflow file - ✅ Load all workflows - ✅ Reload workflow - ✅ File size limit enforcement ### 2. Workflow Registrar Module (`executor/src/workflow/registrar.rs`) ✅ **Implemented:** - `WorkflowRegistrar` - Registers workflows in database - `RegistrationOptions` - Configuration for registration behavior - `RegistrationResult` - Result of workflow registration **Features:** - Register workflows as workflow_definition records - Store complete workflow YAML as JSON in definition field - Update existing workflows - Unregister workflows and clean up database - Uses repository trait pattern correctly **Status:** Complete and compiling ### 3. Module Exports ✅ Updated `executor/src/workflow/mod.rs` to export: - `WorkflowLoader`, `LoadedWorkflow`, `LoaderConfig`, `WorkflowFile` - `WorkflowRegistrar`, `RegistrationOptions`, `RegistrationResult` ### 4. Dependencies ✅ Added to `executor/Cargo.toml`: - `tempfile = "3.8"` (dev-dependency for tests) --- ## Issues Discovered ### Schema Incompatibility The workflow orchestration design (from Phase 1.2) assumed different database schema fields than what actually exists: **Expected (from workflow design):** ```rust Action { pack_id: i64, ref_name: String, name: String, description: Option, runner_type: String, enabled: bool, entry_point: Option, parameters: JsonValue, output_schema: Option, tags: Vec, metadata: Option, is_workflow: bool, workflow_def: Option, timeout: Option, } ``` **Actual (from migrations):** ```rust Action { id: i64, ref: String, // NOT ref_name pack: i64, // NOT pack_id pack_ref: String, // Additional field label: String, // NOT name description: String, // NOT Option entrypoint: String, // NOT Option runtime: Option, // NOT runner_type param_schema: Option, out_schema: Option, is_workflow: bool, workflow_def: Option, } ``` ### Repository Pattern Differences **Expected:** Instance methods on repository structs ```rust self.action_repo.find_by_ref(ref).await? self.action_repo.delete(id).await? ``` **Actual:** Trait-based static methods ```rust ActionRepository::find_by_ref(&pool, ref).await? ActionRepository::delete(&pool, id).await? ``` --- ## Completed Changes ### 1. Updated Registrar for Actual Schema ✅ Modified `workflow/registrar.rs`: - ✅ Use `CreateWorkflowDefinitionInput` for workflow creation - ✅ Discovered workflows are NOT stored as actions initially - ✅ Workflows stored in `workflow_definition` table with full YAML as JSON - ✅ Map workflow fields to workflow_definition schema: - `workflow.ref` → `workflow_definition.ref` - Pack ID from PackRepository lookup → `workflow_definition.pack` - Pack ref → `workflow_definition.pack_ref` - `workflow.label` → `workflow_definition.label` - `workflow.description` → `workflow_definition.description` - `workflow.parameters` → `workflow_definition.param_schema` - `workflow.output` → `workflow_definition.out_schema` - Complete workflow as JSON → `workflow_definition.definition` ### 2. Fixed Repository Usage ✅ - ✅ Replaced instance method calls with trait static methods - ✅ Pass `&self.pool` as executor to all repository methods - ✅ Use `Create`, `Update`, `Delete`, `FindByRef` traits correctly - ✅ Proper type annotations for trait method calls ### 3. Resolved Schema Understanding ✅ **Key Discovery:** - Workflows are stored in `workflow_definition` table, NOT as actions initially - Actions can optionally link to workflows via `is_workflow` and `workflow_def` columns - For Phase 1.4, we only create workflow_definition records - Action creation for workflows will be handled in later phases ### 4. WorkflowDefinition Storage ✅ - ✅ Verified workflow_definition table structure matches model - ✅ Complete workflow serialized to JSON and stored in `definition` field - ✅ Task serialization format compatible (stored as part of definition JSON) - ✅ Vars and output stored in both dedicated columns and definition JSON --- ## Testing Status ### Loader Tests - ✅ All loader tests passing - ✅ File system operations work correctly - ✅ Error handling validated ### Registrar Tests - ✅ Basic unit tests passing (2 tests) - ⏸️ Database integration tests not yet implemented (requires database setup) - ⏸️ Transaction rollback tests needed (future work) --- ## Next Steps ### Completed (Schema Alignment) ✅ 1. **Reviewed workflow_definition table schema** ✅ - Confirmed table structure matches model - Workflow stored as JSON in `definition` field - Separate columns for ref, pack, pack_ref, label, description, version, etc. 2. **Updated to use CreateWorkflowDefinitionInput** ✅ - Serialize complete workflow to JSON - Store in workflow_definition table directly - No action creation needed in this phase 3. **Fixed registrar repository calls** ✅ - Converted all to trait static methods - Updated error handling with Error::validation() and Error::not_found() - Proper type annotations 4. **Resolved entrypoint and runtime questions** ✅ - Not applicable - workflows stored separately from actions - Actions can link to workflows in future phases - No entrypoint/runtime needed for workflow_definition records ### API Integration (After Schema Fix) 5. **Add workflow API endpoints** (`api/src/handlers/workflow.rs`): - `GET /api/v1/workflows` - List workflows - `GET /api/v1/workflows/:ref` - Get workflow by ref - `POST /api/v1/workflows` - Create/upload workflow - `PUT /api/v1/workflows/:ref` - Update workflow - `DELETE /api/v1/workflows/:ref` - Delete workflow - `GET /api/v1/packs/:pack/workflows` - List workflows in pack 6. **Pack integration** - Update pack loader to discover workflows - Register workflows during pack installation - Unregister during pack removal 7. **Workflow catalog** - Search/filter workflows by tags, pack, etc. - List workflow versions - Show workflow metadata and tasks --- ## Files Created/Modified ### Created - `crates/executor/src/workflow/loader.rs` (483 lines) - `crates/executor/src/workflow/registrar.rs` (462 lines) - `work-summary/phase-1.4-loader-registration-progress.md` (this file) ### Modified - `crates/executor/src/workflow/mod.rs` - Added loader/registrar exports - `crates/executor/src/workflow/parser.rs` - Added `From` for Error - `crates/executor/Cargo.toml` - Added tempfile dev-dependency --- ## Dependencies on Other Work - ✅ Phase 1.2: Models and repositories (complete) - ✅ Phase 1.3: YAML parsing and validation (complete) - ⏸️ Runtime system: Need workflow runtime or convention - ⏸️ Pack management: Integration for auto-loading workflows --- ## Notes ### Design Decisions Needed 1. **Workflow Entrypoint**: What should this be? - Option A: `"workflow"` (simple constant) - Option B: `"internal://workflow"` (URL-like scheme) - Option C: Reference to workflow definition ID - **Recommendation:** Use `"internal://workflow"` to distinguish from regular actions 2. **Workflow Runtime**: How to handle? - Option A: NULL (workflows don't use runtimes like actions do) - Option B: Create special "workflow" runtime in database - **Recommendation:** NULL since workflows are orchestrated, not executed in runtimes 3. **Description Field**: Required in DB, optional in YAML - Use empty string as default? Or derive from label? - **Recommendation:** Default to empty string if not provided ### Observations - The loader is well-tested and production-ready - The registrar logic is sound but needs schema adaptation - Repository trait pattern is cleaner than instance methods - Error handling with `Error::validation()` and `Error::not_found()` is more idiomatic ### Performance Considerations - Loading all workflows at startup could be slow for large deployments - Consider lazy loading or background workflow discovery - Cache loaded workflows in memory to avoid re-parsing - Use file system watchers for hot-reloading during development --- ## Completed Work Summary - ✅ Schema alignment: 3 hours (COMPLETE) - ⏸️ API endpoints: 3-4 hours (Phase 1.5) - ⏸️ Pack integration: 2-3 hours (Phase 1.5) - ⏸️ Database integration testing: 2-3 hours (Phase 1.5) - ✅ Documentation: 2 hours (COMPLETE) **Phase 1.4 Status:** COMPLETE **Next Phase:** 1.5 - API Integration --- ## References - `docs/workflow-orchestration.md` - Original design - `docs/workflow-models-api.md` - Models API reference - `migrations/20250101000004_execution_system.sql` - Actual schema - `crates/common/src/repositories/action.rs` - Repository pattern - `crates/common/src/repositories/workflow.rs` - Workflow repositories ## Compilation Status **Final Build:** ✅ SUCCESS ``` Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.50s ``` **Tests:** ✅ ALL PASSING ``` running 30 tests test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured ``` - 6 loader tests passing - 2 registrar tests passing - 6 parser tests passing - 10 template tests passing - 6 validator tests passing **Warnings:** Only dead code warnings for unused methods (expected)