session model
This commit is contained in:
AI Christianson
parent
376fe18b83
commit
c8fbd942ac
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@ -56,6 +56,9 @@ from ra_aid.database.repositories.research_note_repository import (
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from ra_aid.database.repositories.trajectory_repository import (
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TrajectoryRepositoryManager, get_trajectory_repository
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)
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from ra_aid.database.repositories.session_repository import (
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SessionRepositoryManager, get_session_repository
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)
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from ra_aid.database.repositories.related_files_repository import (
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RelatedFilesRepositoryManager
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)
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@ -526,7 +529,8 @@ def main():
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env_discovery.discover()
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env_data = env_discovery.format_markdown()
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with KeyFactRepositoryManager(db) as key_fact_repo, \
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with SessionRepositoryManager(db) as session_repo, \
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KeyFactRepositoryManager(db) as key_fact_repo, \
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KeySnippetRepositoryManager(db) as key_snippet_repo, \
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HumanInputRepositoryManager(db) as human_input_repo, \
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ResearchNoteRepositoryManager(db) as research_note_repo, \
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@ -536,6 +540,7 @@ def main():
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ConfigRepositoryManager(config) as config_repo, \
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EnvInvManager(env_data) as env_inv:
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# This initializes all repositories and makes them available via their respective get methods
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logger.debug("Initialized SessionRepository")
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logger.debug("Initialized KeyFactRepository")
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logger.debug("Initialized KeySnippetRepository")
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logger.debug("Initialized HumanInputRepository")
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@ -546,6 +551,10 @@ def main():
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logger.debug("Initialized ConfigRepository")
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logger.debug("Initialized Environment Inventory")
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# Create a new session for this program run
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logger.debug("Initializing new session")
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session_repo.create_session()
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# Check dependencies before proceeding
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check_dependencies()
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@ -42,8 +42,8 @@ def initialize_database():
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# to avoid circular imports
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# Note: This import needs to be here, not at the top level
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try:
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from ra_aid.database.models import KeyFact, KeySnippet, HumanInput, ResearchNote, Trajectory
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db.create_tables([KeyFact, KeySnippet, HumanInput, ResearchNote, Trajectory], safe=True)
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from ra_aid.database.models import KeyFact, KeySnippet, HumanInput, ResearchNote, Trajectory, Session
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db.create_tables([KeyFact, KeySnippet, HumanInput, ResearchNote, Trajectory, Session], safe=True)
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logger.debug("Ensured database tables exist")
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except Exception as e:
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logger.error(f"Error creating tables: {str(e)}")
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@ -99,6 +99,25 @@ class BaseModel(peewee.Model):
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raise
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class Session(BaseModel):
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"""
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Model representing a session stored in the database.
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Sessions track information about each program run, providing a way to group
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related records like human inputs, trajectories, and key facts.
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Each session record captures details about when the program was started,
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what command line arguments were used, and environment information.
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"""
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start_time = peewee.DateTimeField(default=datetime.datetime.now)
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command_line = peewee.TextField(null=True)
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program_version = peewee.TextField(null=True)
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machine_info = peewee.TextField(null=True) # JSON-encoded machine information
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class Meta:
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table_name = "session"
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class HumanInput(BaseModel):
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"""
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Model representing human input stored in the database.
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@ -109,6 +128,7 @@ class HumanInput(BaseModel):
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"""
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content = peewee.TextField()
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source = peewee.TextField() # 'cli', 'chat', or 'hil'
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session = peewee.ForeignKeyField(Session, backref='human_inputs', null=True)
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# created_at and updated_at are inherited from BaseModel
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class Meta:
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@ -124,6 +144,7 @@ class KeyFact(BaseModel):
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"""
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content = peewee.TextField()
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human_input = peewee.ForeignKeyField(HumanInput, backref='key_facts', null=True)
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session = peewee.ForeignKeyField(Session, backref='key_facts', null=True)
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# created_at and updated_at are inherited from BaseModel
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class Meta:
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@ -143,6 +164,7 @@ class KeySnippet(BaseModel):
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snippet = peewee.TextField()
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description = peewee.TextField(null=True)
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human_input = peewee.ForeignKeyField(HumanInput, backref='key_snippets', null=True)
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session = peewee.ForeignKeyField(Session, backref='key_snippets', null=True)
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# created_at and updated_at are inherited from BaseModel
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class Meta:
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@ -159,6 +181,7 @@ class ResearchNote(BaseModel):
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"""
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content = peewee.TextField()
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human_input = peewee.ForeignKeyField(HumanInput, backref='research_notes', null=True)
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session = peewee.ForeignKeyField(Session, backref='research_notes', null=True)
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# created_at and updated_at are inherited from BaseModel
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class Meta:
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@ -193,6 +216,7 @@ class Trajectory(BaseModel):
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error_message = peewee.TextField(null=True) # The error message
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error_type = peewee.TextField(null=True) # The type/class of the error
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error_details = peewee.TextField(null=True) # Additional error details like stack traces or context
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session = peewee.ForeignKeyField(Session, backref='trajectories', null=True)
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# created_at and updated_at are inherited from BaseModel
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class Meta:
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@ -0,0 +1,243 @@
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"""
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Session repository implementation for database access.
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This module provides a repository implementation for the Session model,
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following the repository pattern for data access abstraction. It handles
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operations for storing and retrieving application session information.
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"""
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from typing import Dict, List, Optional, Any
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import contextvars
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import datetime
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import json
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import logging
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import sys
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import peewee
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from ra_aid.database.models import Session
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from ra_aid.__version__ import __version__
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from ra_aid.logging_config import get_logger
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logger = get_logger(__name__)
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# Create contextvar to hold the SessionRepository instance
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session_repo_var = contextvars.ContextVar("session_repo", default=None)
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class SessionRepositoryManager:
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"""
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Context manager for SessionRepository.
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This class provides a context manager interface for SessionRepository,
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using the contextvars approach for thread safety.
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Example:
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with DatabaseManager() as db:
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with SessionRepositoryManager(db) as repo:
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# Use the repository
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session = repo.create_session()
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current_session = repo.get_current_session()
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"""
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def __init__(self, db):
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"""
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Initialize the SessionRepositoryManager.
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Args:
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db: Database connection to use (required)
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"""
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self.db = db
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def __enter__(self) -> 'SessionRepository':
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"""
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Initialize the SessionRepository and return it.
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Returns:
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SessionRepository: The initialized repository
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"""
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repo = SessionRepository(self.db)
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session_repo_var.set(repo)
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return repo
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def __exit__(
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self,
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exc_type: Optional[type],
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exc_val: Optional[Exception],
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exc_tb: Optional[object],
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) -> None:
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"""
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Reset the repository when exiting the context.
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Args:
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exc_type: The exception type if an exception was raised
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exc_val: The exception value if an exception was raised
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exc_tb: The traceback if an exception was raised
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"""
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# Reset the contextvar to None
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session_repo_var.set(None)
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# Don't suppress exceptions
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return False
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def get_session_repository() -> 'SessionRepository':
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"""
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Get the current SessionRepository instance.
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Returns:
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SessionRepository: The current repository instance
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Raises:
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RuntimeError: If no repository has been initialized with SessionRepositoryManager
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"""
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repo = session_repo_var.get()
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if repo is None:
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raise RuntimeError(
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"No SessionRepository available. "
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"Make sure to initialize one with SessionRepositoryManager first."
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)
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return repo
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class SessionRepository:
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"""
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Repository for handling Session records in the database.
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This class provides methods for creating, retrieving, and managing Session records.
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It abstracts away the database operations and provides a clean interface for working
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with Session entities.
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"""
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def __init__(self, db):
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"""
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Initialize the SessionRepository.
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Args:
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db: Database connection to use (required)
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"""
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if db is None:
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raise ValueError("Database connection is required for SessionRepository")
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self.db = db
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self.current_session = None
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def create_session(self, metadata: Optional[Dict[str, Any]] = None) -> Session:
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"""
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Create a new session record in the database.
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Args:
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metadata: Optional dictionary of additional metadata to store with the session
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Returns:
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Session: The newly created session instance
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Raises:
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peewee.DatabaseError: If there's an error creating the record
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"""
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try:
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# Get command line arguments
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command_line = " ".join(sys.argv)
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# Get program version
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program_version = __version__
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# JSON encode metadata if provided
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machine_info = json.dumps(metadata) if metadata is not None else None
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session = Session.create(
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start_time=datetime.datetime.now(),
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command_line=command_line,
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program_version=program_version,
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machine_info=machine_info
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)
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# Store the current session
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self.current_session = session
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logger.debug(f"Created new session with ID {session.id}")
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return session
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except peewee.DatabaseError as e:
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logger.error(f"Failed to create session record: {str(e)}")
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raise
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def get_current_session(self) -> Optional[Session]:
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"""
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Get the current active session.
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If no session has been created in this repository instance,
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retrieves the most recent session from the database.
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Returns:
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Optional[Session]: The current session or None if no sessions exist
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"""
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if self.current_session is not None:
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return self.current_session
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try:
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# Find the most recent session
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session = Session.select().order_by(Session.created_at.desc()).first()
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if session:
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self.current_session = session
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return session
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except peewee.DatabaseError as e:
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logger.error(f"Failed to get current session: {str(e)}")
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return None
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def get_current_session_id(self) -> Optional[int]:
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"""
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Get the ID of the current active session.
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Returns:
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Optional[int]: The ID of the current session or None if no session exists
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"""
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session = self.get_current_session()
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return session.id if session else None
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def get(self, session_id: int) -> Optional[Session]:
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"""
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Get a session by its ID.
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Args:
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session_id: The ID of the session to retrieve
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Returns:
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Optional[Session]: The session with the given ID or None if not found
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"""
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try:
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return Session.get_or_none(Session.id == session_id)
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except peewee.DatabaseError as e:
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logger.error(f"Database error getting session {session_id}: {str(e)}")
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return None
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def get_all(self) -> List[Session]:
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"""
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Get all sessions from the database.
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Returns:
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List[Session]: List of all sessions
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"""
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try:
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return list(Session.select().order_by(Session.created_at.desc()))
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except peewee.DatabaseError as e:
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logger.error(f"Failed to get all sessions: {str(e)}")
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return []
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def get_recent(self, limit: int = 10) -> List[Session]:
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"""
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Get the most recent sessions from the database.
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Args:
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limit: Maximum number of sessions to return (default: 10)
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Returns:
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List[Session]: List of the most recent sessions
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"""
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try:
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return list(
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Session.select()
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.order_by(Session.created_at.desc())
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.limit(limit)
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)
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except peewee.DatabaseError as e:
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logger.error(f"Failed to get recent sessions: {str(e)}")
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return []
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@ -0,0 +1,79 @@
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"""Peewee migrations -- 008_20250311_191232_add_session_model.py.
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Some examples (model - class or model name)::
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> Model = migrator.orm['table_name'] # Return model in current state by name
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> Model = migrator.ModelClass # Return model in current state by name
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> migrator.sql(sql) # Run custom SQL
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> migrator.run(func, *args, **kwargs) # Run python function with the given args
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> migrator.create_model(Model) # Create a model (could be used as decorator)
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> migrator.remove_model(model, cascade=True) # Remove a model
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> migrator.add_fields(model, **fields) # Add fields to a model
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> migrator.change_fields(model, **fields) # Change fields
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> migrator.remove_fields(model, *field_names, cascade=True)
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> migrator.rename_field(model, old_field_name, new_field_name)
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> migrator.rename_table(model, new_table_name)
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> migrator.add_index(model, *col_names, unique=False)
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> migrator.add_not_null(model, *field_names)
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> migrator.add_default(model, field_name, default)
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> migrator.add_constraint(model, name, sql)
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> migrator.drop_index(model, *col_names)
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> migrator.drop_not_null(model, *field_names)
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> migrator.drop_constraints(model, *constraints)
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"""
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from contextlib import suppress
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import peewee as pw
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from peewee_migrate import Migrator
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with suppress(ImportError):
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import playhouse.postgres_ext as pw_pext
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def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
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"""Create the session table for storing application session information."""
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table_exists = False
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# Check if the table already exists
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try:
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database.execute_sql("SELECT id FROM session LIMIT 1")
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# If we reach here, the table exists
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table_exists = True
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except pw.OperationalError:
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# Table doesn't exist, safe to create
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pass
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# Create the Session model - this registers it in migrator.orm as 'Session'
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@migrator.create_model
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class Session(pw.Model):
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id = pw.AutoField()
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created_at = pw.DateTimeField()
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updated_at = pw.DateTimeField()
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start_time = pw.DateTimeField()
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command_line = pw.TextField(null=True)
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program_version = pw.TextField(null=True)
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machine_info = pw.TextField(null=True)
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class Meta:
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table_name = "session"
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# FIX: Explicitly register the model under the lowercase table name key
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# This ensures that later migrations can access it via either:
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# - migrator.orm['Session'] (class name)
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# - migrator.orm['session'] (table name)
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if 'Session' in migrator.orm:
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migrator.orm['session'] = migrator.orm['Session']
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# Only return after model registration is complete
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if table_exists:
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return
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def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
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"""Remove the session table."""
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migrator.remove_model('session')
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"""Peewee migrations -- 009_20250311_191517_add_session_fk_to_human_input.py.
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Some examples (model - class or model name)::
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> Model = migrator.orm['table_name'] # Return model in current state by name
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> Model = migrator.ModelClass # Return model in current state by name
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> migrator.sql(sql) # Run custom SQL
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> migrator.run(func, *args, **kwargs) # Run python function with the given args
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> migrator.create_model(Model) # Create a model (could be used as decorator)
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> migrator.remove_model(model, cascade=True) # Remove a model
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> migrator.add_fields(model, **fields) # Add fields to a model
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> migrator.change_fields(model, **fields) # Change fields
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> migrator.remove_fields(model, *field_names, cascade=True)
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> migrator.rename_field(model, old_field_name, new_field_name)
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> migrator.rename_table(model, new_table_name)
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> migrator.add_index(model, *col_names, unique=False)
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> migrator.add_not_null(model, *field_names)
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> migrator.add_default(model, field_name, default)
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> migrator.add_constraint(model, name, sql)
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> migrator.drop_index(model, *col_names)
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> migrator.drop_not_null(model, *field_names)
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> migrator.drop_constraints(model, *constraints)
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"""
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from contextlib import suppress
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import peewee as pw
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from peewee_migrate import Migrator
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with suppress(ImportError):
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import playhouse.postgres_ext as pw_pext
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def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
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"""Add session foreign key to HumanInput table."""
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# Get the Session model from migrator.orm
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Session = migrator.orm['session']
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# Check if the column already exists
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try:
|
||||
database.execute_sql("SELECT session_id FROM human_input LIMIT 1")
|
||||
# If we reach here, the column exists
|
||||
return
|
||||
except pw.OperationalError:
|
||||
# Column doesn't exist, safe to add
|
||||
pass
|
||||
|
||||
# Add the session_id foreign key column
|
||||
migrator.add_fields(
|
||||
'human_input',
|
||||
session=pw.ForeignKeyField(
|
||||
Session,
|
||||
null=True,
|
||||
field='id',
|
||||
on_delete='CASCADE'
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Remove session foreign key from HumanInput table."""
|
||||
|
||||
migrator.remove_fields('human_input', 'session')
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
"""Peewee migrations -- 010_20250311_191617_add_session_fk_to_key_fact.py.
|
||||
|
||||
Some examples (model - class or model name)::
|
||||
|
||||
> Model = migrator.orm['table_name'] # Return model in current state by name
|
||||
> Model = migrator.ModelClass # Return model in current state by name
|
||||
|
||||
> migrator.sql(sql) # Run custom SQL
|
||||
> migrator.run(func, *args, **kwargs) # Run python function with the given args
|
||||
> migrator.create_model(Model) # Create a model (could be used as decorator)
|
||||
> migrator.remove_model(model, cascade=True) # Remove a model
|
||||
> migrator.add_fields(model, **fields) # Add fields to a model
|
||||
> migrator.change_fields(model, **fields) # Change fields
|
||||
> migrator.remove_fields(model, *field_names, cascade=True)
|
||||
> migrator.rename_field(model, old_field_name, new_field_name)
|
||||
> migrator.rename_table(model, new_table_name)
|
||||
> migrator.add_index(model, *col_names, unique=False)
|
||||
> migrator.add_not_null(model, *field_names)
|
||||
> migrator.add_default(model, field_name, default)
|
||||
> migrator.add_constraint(model, name, sql)
|
||||
> migrator.drop_index(model, *col_names)
|
||||
> migrator.drop_not_null(model, *field_names)
|
||||
> migrator.drop_constraints(model, *constraints)
|
||||
|
||||
"""
|
||||
|
||||
from contextlib import suppress
|
||||
|
||||
import peewee as pw
|
||||
from peewee_migrate import Migrator
|
||||
|
||||
|
||||
with suppress(ImportError):
|
||||
import playhouse.postgres_ext as pw_pext
|
||||
|
||||
|
||||
def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Add session foreign key to KeyFact table."""
|
||||
|
||||
# Get the Session model from migrator.orm
|
||||
Session = migrator.orm['session']
|
||||
|
||||
# Check if the column already exists
|
||||
try:
|
||||
database.execute_sql("SELECT session_id FROM key_fact LIMIT 1")
|
||||
# If we reach here, the column exists
|
||||
return
|
||||
except pw.OperationalError:
|
||||
# Column doesn't exist, safe to add
|
||||
pass
|
||||
|
||||
# Add the session_id foreign key column
|
||||
migrator.add_fields(
|
||||
'key_fact',
|
||||
session=pw.ForeignKeyField(
|
||||
Session,
|
||||
null=True,
|
||||
field='id',
|
||||
on_delete='CASCADE'
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Remove session foreign key from KeyFact table."""
|
||||
|
||||
migrator.remove_fields('key_fact', 'session')
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
"""Peewee migrations -- 011_20250311_191732_add_session_fk_to_key_snippet.py.
|
||||
|
||||
Some examples (model - class or model name)::
|
||||
|
||||
> Model = migrator.orm['table_name'] # Return model in current state by name
|
||||
> Model = migrator.ModelClass # Return model in current state by name
|
||||
|
||||
> migrator.sql(sql) # Run custom SQL
|
||||
> migrator.run(func, *args, **kwargs) # Run python function with the given args
|
||||
> migrator.create_model(Model) # Create a model (could be used as decorator)
|
||||
> migrator.remove_model(model, cascade=True) # Remove a model
|
||||
> migrator.add_fields(model, **fields) # Add fields to a model
|
||||
> migrator.change_fields(model, **fields) # Change fields
|
||||
> migrator.remove_fields(model, *field_names, cascade=True)
|
||||
> migrator.rename_field(model, old_field_name, new_field_name)
|
||||
> migrator.rename_table(model, new_table_name)
|
||||
> migrator.add_index(model, *col_names, unique=False)
|
||||
> migrator.add_not_null(model, *field_names)
|
||||
> migrator.add_default(model, field_name, default)
|
||||
> migrator.add_constraint(model, name, sql)
|
||||
> migrator.drop_index(model, *col_names)
|
||||
> migrator.drop_not_null(model, *field_names)
|
||||
> migrator.drop_constraints(model, *constraints)
|
||||
|
||||
"""
|
||||
|
||||
from contextlib import suppress
|
||||
|
||||
import peewee as pw
|
||||
from peewee_migrate import Migrator
|
||||
|
||||
|
||||
with suppress(ImportError):
|
||||
import playhouse.postgres_ext as pw_pext
|
||||
|
||||
|
||||
def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Add session foreign key to KeySnippet table."""
|
||||
|
||||
# Get the Session model from migrator.orm
|
||||
Session = migrator.orm['session']
|
||||
|
||||
# Check if the column already exists
|
||||
try:
|
||||
database.execute_sql("SELECT session_id FROM key_snippet LIMIT 1")
|
||||
# If we reach here, the column exists
|
||||
return
|
||||
except pw.OperationalError:
|
||||
# Column doesn't exist, safe to add
|
||||
pass
|
||||
|
||||
# Add the session_id foreign key column
|
||||
migrator.add_fields(
|
||||
'key_snippet',
|
||||
session=pw.ForeignKeyField(
|
||||
Session,
|
||||
null=True,
|
||||
field='id',
|
||||
on_delete='CASCADE'
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Remove session foreign key from KeySnippet table."""
|
||||
|
||||
migrator.remove_fields('key_snippet', 'session')
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
"""Peewee migrations -- 012_20250311_191832_add_session_fk_to_research_note.py.
|
||||
|
||||
Some examples (model - class or model name)::
|
||||
|
||||
> Model = migrator.orm['table_name'] # Return model in current state by name
|
||||
> Model = migrator.ModelClass # Return model in current state by name
|
||||
|
||||
> migrator.sql(sql) # Run custom SQL
|
||||
> migrator.run(func, *args, **kwargs) # Run python function with the given args
|
||||
> migrator.create_model(Model) # Create a model (could be used as decorator)
|
||||
> migrator.remove_model(model, cascade=True) # Remove a model
|
||||
> migrator.add_fields(model, **fields) # Add fields to a model
|
||||
> migrator.change_fields(model, **fields) # Change fields
|
||||
> migrator.remove_fields(model, *field_names, cascade=True)
|
||||
> migrator.rename_field(model, old_field_name, new_field_name)
|
||||
> migrator.rename_table(model, new_table_name)
|
||||
> migrator.add_index(model, *col_names, unique=False)
|
||||
> migrator.add_not_null(model, *field_names)
|
||||
> migrator.add_default(model, field_name, default)
|
||||
> migrator.add_constraint(model, name, sql)
|
||||
> migrator.drop_index(model, *col_names)
|
||||
> migrator.drop_not_null(model, *field_names)
|
||||
> migrator.drop_constraints(model, *constraints)
|
||||
|
||||
"""
|
||||
|
||||
from contextlib import suppress
|
||||
|
||||
import peewee as pw
|
||||
from peewee_migrate import Migrator
|
||||
|
||||
|
||||
with suppress(ImportError):
|
||||
import playhouse.postgres_ext as pw_pext
|
||||
|
||||
|
||||
def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Add session foreign key to ResearchNote table."""
|
||||
|
||||
# Get the Session model from migrator.orm
|
||||
Session = migrator.orm['session']
|
||||
|
||||
# Check if the column already exists
|
||||
try:
|
||||
database.execute_sql("SELECT session_id FROM research_note LIMIT 1")
|
||||
# If we reach here, the column exists
|
||||
return
|
||||
except pw.OperationalError:
|
||||
# Column doesn't exist, safe to add
|
||||
pass
|
||||
|
||||
# Add the session_id foreign key column
|
||||
migrator.add_fields(
|
||||
'research_note',
|
||||
session=pw.ForeignKeyField(
|
||||
Session,
|
||||
null=True,
|
||||
field='id',
|
||||
on_delete='CASCADE'
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Remove session foreign key from ResearchNote table."""
|
||||
|
||||
migrator.remove_fields('research_note', 'session')
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
"""Peewee migrations -- 013_20250311_191701_add_session_fk_to_trajectory.py.
|
||||
|
||||
Some examples (model - class or model name)::
|
||||
|
||||
> Model = migrator.orm['table_name'] # Return model in current state by name
|
||||
> Model = migrator.ModelClass # Return model in current state by name
|
||||
|
||||
> migrator.sql(sql) # Run custom SQL
|
||||
> migrator.run(func, *args, **kwargs) # Run python function with the given args
|
||||
> migrator.create_model(Model) # Create a model (could be used as decorator)
|
||||
> migrator.remove_model(model, cascade=True) # Remove a model
|
||||
> migrator.add_fields(model, **fields) # Add fields to a model
|
||||
> migrator.change_fields(model, **fields) # Change fields
|
||||
> migrator.remove_fields(model, *field_names, cascade=True)
|
||||
> migrator.rename_field(model, old_field_name, new_field_name)
|
||||
> migrator.rename_table(model, new_table_name)
|
||||
> migrator.add_index(model, *col_names, unique=False)
|
||||
> migrator.add_not_null(model, *field_names)
|
||||
> migrator.add_default(model, field_name, default)
|
||||
> migrator.add_constraint(model, name, sql)
|
||||
> migrator.drop_index(model, *col_names)
|
||||
> migrator.drop_not_null(model, *field_names)
|
||||
> migrator.drop_constraints(model, *constraints)
|
||||
|
||||
"""
|
||||
|
||||
from contextlib import suppress
|
||||
|
||||
import peewee as pw
|
||||
from peewee_migrate import Migrator
|
||||
|
||||
|
||||
with suppress(ImportError):
|
||||
import playhouse.postgres_ext as pw_pext
|
||||
|
||||
|
||||
def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Add session foreign key to Trajectory table."""
|
||||
|
||||
# Get the Session model from migrator.orm
|
||||
Session = migrator.orm['session']
|
||||
|
||||
# Check if the column already exists
|
||||
try:
|
||||
database.execute_sql("SELECT session_id FROM trajectory LIMIT 1")
|
||||
# If we reach here, the column exists
|
||||
return
|
||||
except pw.OperationalError:
|
||||
# Column doesn't exist, safe to add
|
||||
pass
|
||||
|
||||
# Add the session_id foreign key column
|
||||
migrator.add_fields(
|
||||
'trajectory',
|
||||
session=pw.ForeignKeyField(
|
||||
Session,
|
||||
null=True,
|
||||
field='id',
|
||||
on_delete='CASCADE'
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
|
||||
"""Remove session foreign key from Trajectory table."""
|
||||
|
||||
migrator.remove_fields('trajectory', 'session')
|
||||
Loading…
Reference in New Issue