This commit migrates the system to database-only position storage,
eliminating file-based position.jsonl dependencies and fixing
ContextInjector initialization timing issues.
Key Changes:
1. ContextInjector Lifecycle Refactor:
- Remove ContextInjector creation from BaseAgent.__init__()
- Add BaseAgent.set_context() method for post-initialization injection
- Update ModelDayExecutor to create ContextInjector with correct trading day date
- Ensures ContextInjector receives actual trading date instead of init_date
- Includes session_id injection for proper database linking
2. Database Position Functions:
- Implement get_today_init_position_from_db() for querying previous positions
- Implement add_no_trade_record_to_db() for no-trade day handling
- Both functions query SQLite directly (positions + holdings tables)
- Handle first trading day case with initial cash return
- Include comprehensive error handling and logging
3. System Integration:
- Update get_agent_system_prompt() to use database queries
- Update _handle_trading_result() to write no-trade records to database
- Remove dependencies on position.jsonl file reading/writing
- Use deployment_config for automatic prod/dev database resolution
Data Flow:
- ModelDayExecutor creates runtime config and trading session
- Agent initialized without context
- ContextInjector created with (signature, date, job_id, session_id)
- Context injected via set_context()
- System prompt queries database for yesterday's position
- Trade tools write directly to database
- No-trade handler creates database records
Fixes:
- ContextInjector no longer receives None values
- No FileNotFoundError for missing position.jsonl files
- Database is single source of truth for position tracking
- Session linking maintained across all position records
Design: docs/plans/2025-02-11-database-position-tracking-design.md
Complete rewrite of position management in MCP trade tools:
**Trade Tools (agent_tools/tool_trade.py)**
- Replace file-based position.jsonl reads with SQLite queries
- Add get_current_position_from_db() to query positions and holdings tables
- Rewrite buy() and sell() to write directly to database
- Calculate portfolio value and P&L metrics in tools
- Accept job_id and session_id parameters via ContextInjector
- Return errors with proper context for debugging
- Use deployment-aware database path resolution
**Context Injection (agent/context_injector.py)**
- Add job_id and session_id to constructor
- Inject job_id and session_id into buy/sell tool calls
- Support optional parameters (None in standalone mode)
**BaseAgent (agent/base_agent/base_agent.py)**
- Read JOB_ID from runtime config
- Pass job_id to ContextInjector during initialization
- Enable automatic context injection for API mode
**ModelDayExecutor (api/model_day_executor.py)**
- Add _initialize_starting_position() method
- Create initial position record before agent runs
- Load initial_cash from config
- Update context_injector.session_id after session creation
- Link positions to sessions automatically
**Architecture Changes:**
- Eliminates file-based position tracking entirely
- Single source of truth: SQLite database
- Positions automatically linked to trading sessions
- Concurrent execution safe (no file system conflicts)
- Deployment mode aware (prod vs dev databases)
This completes the migration to database-only position storage.
File-based position.jsonl is no longer used or created.
Fixes context injection errors in concurrent simulations.
Resolves issue where MCP trade tools couldn't access SIGNATURE and TODAY_DATE
during concurrent API simulations, causing "SIGNATURE environment variable is
not set" errors.
Problem:
- MCP services run as separate HTTP processes
- Multiple simulations execute concurrently via ThreadPoolExecutor
- Environment variables from executor process not accessible to MCP services
Solution:
- Add ContextInjector that implements ToolCallInterceptor
- Automatically injects signature and today_date into buy/sell tool calls
- Trade tools accept optional parameters, falling back to config/env
- BaseAgent creates interceptor and updates today_date per session
Changes:
- agent/context_injector.py: New interceptor for context injection
- agent/base_agent/base_agent.py: Create and use ContextInjector
- agent_tools/tool_trade.py: Add optional signature/today_date parameters
Benefits:
- Supports concurrent multi-model simulations
- Maintains backward compatibility with CLI mode
- AI model unaware of injected parameters
- Remove _log_message() and _setup_logging() methods
- Remove all calls to logging methods in run_trading_session()
- Update log_path parameter docstring for clarity
- Update integration test to verify conversation history instead of JSONL files
- Reasoning logs now stored exclusively in database via model_day_executor
- Conversation history tracking preserved in memory
Related: Task 6 of reasoning logs API feature
- Add conversation_history instance variable to BaseAgent.__init__
- Create _capture_message() method to capture messages with timestamps
- Create get_conversation_history() method to retrieve conversation
- Create clear_conversation_history() method to reset history
- Modify run_trading_session() to capture user prompts and AI responses
- Add comprehensive unit tests for conversation tracking
- Fix datetime deprecation warning by using timezone-aware datetime
All tests pass successfully.
