Files
liqa/docs/architecture.md
T
ars9 71bcc8faec feat(scenario): step output, getStepOutput helper, export/import MCP tools, doc restructure
- add output column to ScenarioRunStepEntity; exec step return value is JSON-serialised and stored
- expose helpers.getStepOutput(order) in exec code; negative order is relative to current step
- add get_scenario_run, wait_for_scenario_run, export_scenario, import_scenario MCP tools
- move Architecture, Key descriptors, MCP tools, Scenario, Development docs to docs/
- delete CONTRIBUTING.md (replaced by docs/development.md)
2026-04-08 19:02:36 +03:00

1.9 KiB

Architecture

MCP client (AI agent / VS Code Copilot)
        │  HTTP /mcp  (Streamable MCP)
        ▼
┌──────────────────────────────────────┐
│  NestJS app  (src/)                  │
│                                      │
│  McpService         ← all MCP tools  │
│                                      │
│  AuthService        login + sessions │
│  SessionService     session CRUD     │
│  EnvironmentService environment CRUD │
│  BrowserService     ad-hoc browsing  │
│  CodeExecutorService  sandboxed JS   │
│                                      │
│  ScenarioService    scenario CRUD    │
│  ScenarioSchedulerService            │
│    └─ @Interval(1 s) tick loop       │
└──────────────────┬───────────────────┘
                   │ better-sqlite3 (TypeORM)
                   ▼
            data/sessions.db
  • McpService — registers every MCP tool and delegates to domain services.
  • AuthService — drives a Playwright browser to log in via a key descriptor; saves cookies + localStorage as a Session.
  • SessionService — stores and retrieves saved browser sessions.
  • EnvironmentService — stores named environments (URL maps) used by auth and scenarios.
  • BrowserService — ad-hoc, stateless open_url / exec_code operations outside the scenario scheduler.
  • CodeExecutorService — compiles and runs user-supplied Playwright JS inside a sandboxed async function with page, context, and helpers in scope.
  • ScenarioService — CRUD for scenarios, steps, runs, and run logs; import/export.
  • ScenarioSchedulerService — polls for pending step runs every second and executes them. All steps in the same run share one browser instance (see scenario.md).