Merge branch 'feat/tool-definition-manifest' into dev

Conflicts resolved:
- models/__init__.py: kept both TerminalSessionModel (from dev) and
  ToolDefinitionManifest (from feature branch)
- alembic migration: kept full migration (already applied to DB)
- openspec/config.yaml: kept full config with SDD settings
This commit is contained in:
Alex Blank
2026-05-28 15:49:56 +02:00
35 changed files with 8186 additions and 3065 deletions
+470 -72
View File
@@ -1,16 +1,20 @@
"""WebSocket terminal endpoint for tool instances."""
import asyncio
import json
import logging
import uuid
from contextlib import suppress
from fastapi import APIRouter, Depends, HTTPException, WebSocket, status
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from src.auth.dependencies import get_db_session
from src.auth.dependencies import get_current_user_id, get_db_session
from src.models.terminal_session import TerminalSessionModel
from src.models.tool_instance import ToolInstance
from src.models.tool_type import ToolType
from src.services.terminal_manager import terminal_manager
from src.services.terminal_manager import MaxSessionsExceededError, terminal_manager
router = APIRouter()
logger = logging.getLogger(__name__)
@@ -19,32 +23,58 @@ logger = logging.getLogger(__name__)
class SessionRef:
"""Mutable reference to a terminal session, allowing updates during reset."""
def __init__(self, session):
def __init__(self, session, slot_session_id: str | None = None):
self.session = session
self.slot_session_id = slot_session_id or session.session_id
@router.websocket(
"/ws/tool-instances/{instance_id}/terminal",
)
async def terminal_websocket(
async def terminal_websocket_default(
websocket: WebSocket,
instance_id: str,
db_session: AsyncSession = Depends(get_db_session),
) -> None:
"""WebSocket endpoint for terminal access to a tool instance.
"""WebSocket endpoint for terminal access (default session alias).
Provides an interactive terminal session inside a running tool instance container.
Sessions persist across WebSocket disconnections.
Backward-compatible route that maps to the default session.
"""
await _handle_terminal_websocket(websocket, instance_id, None, db_session)
@router.websocket(
"/ws/tool-instances/{instance_id}/terminal/{session_id}",
)
async def terminal_websocket_specific(
websocket: WebSocket,
instance_id: str,
session_id: str,
db_session: AsyncSession = Depends(get_db_session),
) -> None:
"""WebSocket endpoint for a specific terminal session."""
await _handle_terminal_websocket(websocket, instance_id, session_id, db_session)
async def _handle_terminal_websocket(
websocket: WebSocket,
instance_id: str,
target_session_id: str | None,
db_session: AsyncSession,
) -> None:
"""Shared WebSocket handler for terminal sessions.
Args:
websocket: The WebSocket connection.
instance_id: UUID string of the tool instance.
target_session_id: Specific session ID (slot key). None means default session.
db_session: Database session.
Returns:
None. Communicates via WebSocket messages.
"""
logger.debug("Terminal WebSocket connection attempt for instance %s", instance_id)
logger.debug(
"Terminal WebSocket connection attempt for instance %s (session=%s)",
instance_id,
target_session_id or "default",
)
await websocket.accept()
logger.debug("Terminal WebSocket accepted for instance %s", instance_id)
@@ -59,7 +89,9 @@ async def terminal_websocket(
# Authenticate user from session cookie
user_id = await _get_user_from_websocket(websocket, db_session)
if user_id is None:
logger.warning("Unauthorized terminal access attempt for instance %s", instance_id)
logger.warning(
"Unauthorized terminal access attempt for instance %s", instance_id
)
await websocket.close(code=4003, reason="Unauthorized")
return
@@ -71,12 +103,21 @@ async def terminal_websocket(
return
if instance.owner_id != user_id:
logger.warning("Forbidden terminal access for instance %s by user %s", instance_id, user_id)
logger.warning(
"Forbidden terminal access for instance %s by user %s",
instance_id,
user_id,
)
await websocket.close(code=4003, reason="Forbidden")
return
if instance.status != "running" or not instance.container_id:
logger.warning("Instance %s not running (status=%s, container_id=%s)", instance_id, instance.status, instance.container_id)
logger.warning(
"Instance %s not running (status=%s, container_id=%s)",
instance_id,
instance.status,
instance.container_id,
)
await websocket.close(code=4004, reason="Instance not running")
return
@@ -86,16 +127,50 @@ async def terminal_websocket(
tool_type = await db_session.get(ToolType, instance.tool_type_id)
startup_command = tool_type.startup_command if tool_type else None
if startup_command:
logger.debug("Using startup command for instance %s: %s", instance_id, startup_command)
logger.debug(
"Using startup command for instance %s: %s",
instance_id,
startup_command,
)
session = None
# Get or create terminal session
try:
session = await terminal_manager.get_or_create_session(
instance_uuid,
instance.container_id,
startup_command=startup_command,
if target_session_id is None:
# Default session alias
session = await terminal_manager.get_or_create_session(
instance_uuid,
instance.container_id,
startup_command=startup_command,
)
slot_session_id = "default"
else:
# Specific session
session = terminal_manager.get_session(
instance_id,
target_session_id,
)
if session is None:
logger.warning(
"Session %s not found for instance %s",
target_session_id,
instance_id,
)
await websocket.close(code=4004, reason="Session not found")
return
# Determine slot key for reset scoping
key = terminal_manager._find_key_by_internal_id(
instance_id, session.session_id
)
slot_session_id = key[1] if key else target_session_id
logger.debug(
"Terminal session ready for instance %s (session_id=%s, slot=%s)",
instance_id,
session.session_id,
slot_session_id,
)
logger.debug("Terminal session ready for instance %s (session_id=%s)", instance_id, session.session_id)
# Attach WebSocket to session
await terminal_manager.attach_websocket(session, websocket)
@@ -106,11 +181,13 @@ async def terminal_websocket(
logger.debug("Sent connected status for instance %s", instance_id)
# Use mutable session reference so loops can survive reset
session_ref = SessionRef(session)
session_ref = SessionRef(session, slot_session_id)
# Start I/O loops and heartbeat
read_task = asyncio.create_task(_read_loop(session_ref, websocket))
write_task = asyncio.create_task(_write_loop(session_ref, websocket, instance_id))
write_task = asyncio.create_task(
_write_loop(session_ref, websocket, instance_id)
)
heartbeat_task = asyncio.create_task(_heartbeat_loop(websocket))
logger.debug("Started terminal loops for instance %s", instance_id)
@@ -119,24 +196,33 @@ async def terminal_websocket(
[read_task, write_task, heartbeat_task],
return_when=asyncio.FIRST_COMPLETED,
)
logger.debug("Terminal loop completed for instance %s, done=%s", instance_id, len(done))
logger.debug(
"Terminal loop completed for instance %s, done=%s",
instance_id,
len(done),
)
# Cancel remaining tasks
for task in pending:
task.cancel()
except Exception as exc:
logger.error("Terminal session error for instance %s: %s", instance_id, str(exc), exc_info=True)
logger.error(
"Terminal session error for instance %s: %s",
instance_id,
str(exc),
exc_info=True,
)
await websocket.close(code=4000, reason=f"Error: {exc}")
finally:
# Detach WebSocket, don't kill session
try:
if 'session' in locals():
with suppress(Exception):
if session is not None:
await terminal_manager.detach_websocket(session, websocket)
logger.debug("WebSocket detached from session for instance %s", instance_id)
except Exception:
pass
logger.debug(
"WebSocket detached from session for instance %s", instance_id
)
async def _read_loop(session_ref: SessionRef, websocket) -> None:
@@ -175,38 +261,54 @@ async def _write_loop(session_ref: SessionRef, websocket, instance_id: str) -> N
text = message["text"]
if text.startswith("{"):
# Control message (JSON)
import json
try:
ctrl = json.loads(text)
msg_type = ctrl.get("type")
if msg_type == "resize":
cols = ctrl.get("cols", 80)
rows = ctrl.get("rows", 24)
logger.debug(f"Received resize message for instance {instance_id}: {cols}x{rows}")
logger.debug(
"Received resize message for instance %s: %sx%s",
instance_id,
cols,
rows,
)
await session.resize(cols, rows)
elif msg_type == "reset":
# Reset terminal session
logger.debug("Resetting terminal session for instance %s", session.instance_id)
await websocket.send_json({"type": "status", "status": "resetting"})
# Reset the session
# Reset terminal session (scoped to current slot)
logger.debug(
"Resetting terminal session for instance %s (slot=%s)",
session.instance_id,
session_ref.slot_session_id,
)
await websocket.send_json(
{"type": "status", "status": "resetting"}
)
# Reset the session scoped to its slot
new_session = await terminal_manager.reset_session(
session.instance_id,
session.container_id,
startup_command=session.startup_command,
session_id=session_ref.slot_session_id,
name=session.name,
)
# Update the mutable session reference so read_loop uses the new session
# Update the mutable session reference
session_ref.session = new_session
# Attach to new session
await terminal_manager.attach_websocket(new_session, websocket)
await websocket.send_json({"type": "status", "status": "connected"})
await terminal_manager.attach_websocket(
new_session, websocket
)
await websocket.send_json(
{"type": "status", "status": "connected"}
)
# Continue the loop with the new session
continue
except json.JSONDecodeError:
# Not a valid JSON control message, treat as regular input
await session.write_input(text.encode("utf-8"))
@@ -232,56 +334,347 @@ async def _heartbeat_loop(websocket: WebSocket) -> None:
pass
@router.post(
"/projects/{project_id}/repositories/{repo_id}/instances/{instance_id}/terminal/reset",
summary="Reset terminal session",
description="Reset the terminal session for a tool instance, killing the current shell and starting fresh.",
)
async def reset_terminal_session(
project_id: uuid.UUID,
repo_id: uuid.UUID,
async def _get_terminal_instance(
instance_id: uuid.UUID,
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""Reset the terminal session for an instance.
user_id: uuid.UUID,
db_session: AsyncSession,
) -> ToolInstance:
"""Fetch instance and validate auth, ownership, and running status.
Args:
project_id: UUID of the project.
repo_id: UUID of the repository.
instance_id: UUID of the tool instance.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with status message.
The validated ToolInstance.
Raises:
HTTPException: If instance not found, not owned, or not running.
"""
# Get instance and verify it exists and is running
instance = await db_session.get(ToolInstance, instance_id)
if instance is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND,
detail="Instance not found"
status_code=status.HTTP_404_NOT_FOUND, detail="Instance not found"
)
if instance.owner_id != user_id:
raise HTTPException(
status_code=status.HTTP_403_FORBIDDEN,
detail="Not authorized to access this instance",
)
if instance.status != "running" or not instance.container_id:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Instance is not running"
status_code=status.HTTP_400_BAD_REQUEST, detail="Instance is not running"
)
return instance
@router.get(
"/instances/{instance_id}/terminal/sessions",
summary="List terminal sessions",
description="List terminal sessions for a tool instance with live WebSocket state.",
)
async def list_terminal_sessions(
instance_id: uuid.UUID,
user_id: uuid.UUID = Depends(get_current_user_id),
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""List terminal sessions for an instance.
Args:
instance_id: UUID of the tool instance.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with sessions list.
"""
await _get_terminal_instance(instance_id, user_id, db_session)
# Query active DB rows for this instance
result = await db_session.execute(
select(TerminalSessionModel)
.where(TerminalSessionModel.instance_id == instance_id)
.where(TerminalSessionModel.status != "closed")
.order_by(TerminalSessionModel.created_at.asc())
)
db_rows = result.scalars().all()
# Build response with live has_websockets flag
sessions = []
for row in db_rows:
live_session = terminal_manager.get_session(str(instance_id), str(row.id))
sessions.append(
{
"id": str(row.id),
"name": row.name,
"status": row.status,
"has_websockets": live_session.has_websockets()
if live_session
else False,
"created_at": row.created_at.isoformat() if row.created_at else None,
"last_activity_at": row.last_activity_at.isoformat()
if row.last_activity_at
else None,
}
)
return {"sessions": sessions}
@router.post(
"/instances/{instance_id}/terminal/sessions",
summary="Create terminal session",
description="Create a new terminal session for a running tool instance.",
status_code=status.HTTP_201_CREATED,
)
async def create_terminal_session(
instance_id: uuid.UUID,
data: dict,
user_id: uuid.UUID = Depends(get_current_user_id),
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""Create a new terminal session.
Args:
instance_id: UUID of the tool instance.
data: Request body with optional name.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with new session details.
Raises:
HTTPException: 409 if max sessions reached.
"""
instance = await _get_terminal_instance(instance_id, user_id, db_session)
assert instance.container_id is not None
# Fetch tool type to get startup_command
tool_type = await db_session.get(ToolType, instance.tool_type_id)
startup_command = tool_type.startup_command if tool_type else None
name = data.get("name")
try:
session = await terminal_manager.create_session(
instance_id,
instance.container_id,
startup_command=startup_command,
name=name,
)
except MaxSessionsExceededError:
raise HTTPException(
status_code=status.HTTP_409_CONFLICT,
detail="Maximum of 5 terminal sessions reached for this instance",
) from None
return {
"id": session.session_id,
"name": session.name,
"status": session.status,
"created_at": session.last_activity,
}
@router.delete(
"/instances/{instance_id}/terminal/sessions/{session_id}",
summary="Close terminal session",
description="Close a specific terminal session.",
)
async def close_terminal_session(
instance_id: uuid.UUID,
session_id: str,
user_id: uuid.UUID = Depends(get_current_user_id),
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""Close a terminal session.
Args:
instance_id: UUID of the tool instance.
session_id: ID of the session to close.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with closure status.
"""
await _get_terminal_instance(instance_id, user_id, db_session)
# Find the session by internal ID to determine its slot key
key = terminal_manager._find_key_by_internal_id(str(instance_id), session_id)
if (
key is None
and terminal_manager.get_session(str(instance_id), session_id) is not None
):
key = (str(instance_id), session_id)
if key is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND, detail="Session not found"
)
await terminal_manager.close_session(key[0], key[1])
return {"status": "closed", "session_id": session_id}
@router.post(
"/instances/{instance_id}/terminal/sessions/{session_id}/reset",
summary="Reset terminal session",
description="Reset a specific terminal session, killing the current shell and starting fresh.",
)
async def reset_specific_terminal_session(
instance_id: uuid.UUID,
session_id: str,
user_id: uuid.UUID = Depends(get_current_user_id),
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""Reset a specific terminal session.
Args:
instance_id: UUID of the tool instance.
session_id: ID of the session to reset.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with reset session details.
"""
instance = await _get_terminal_instance(instance_id, user_id, db_session)
assert instance.container_id is not None
# Determine slot key for reset
key = terminal_manager._find_key_by_internal_id(str(instance_id), session_id)
if (
key is None
and terminal_manager.get_session(str(instance_id), session_id) is not None
):
key = (str(instance_id), session_id)
if key is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND, detail="Session not found"
)
# Fetch tool type to get startup_command
tool_type = await db_session.get(ToolType, instance.tool_type_id)
startup_command = tool_type.startup_command if tool_type else None
# Preserve name if possible
live_session = terminal_manager.get_session(str(instance_id), session_id)
name = live_session.name if live_session else None
new_session = await terminal_manager.reset_session(
instance_id,
instance.container_id,
startup_command=startup_command,
session_id=key[1],
name=name,
)
return {
"id": new_session.session_id,
"name": new_session.name,
"status": new_session.status,
}
@router.post(
"/instances/{instance_id}/terminal/sessions/{session_id}/rename",
summary="Rename terminal session",
description="Rename a specific terminal session.",
)
async def rename_terminal_session(
instance_id: uuid.UUID,
session_id: str,
data: dict,
user_id: uuid.UUID = Depends(get_current_user_id),
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""Rename a terminal session.
Args:
instance_id: UUID of the tool instance.
session_id: ID of the session to rename.
data: Request body with new name.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with updated session details.
"""
await _get_terminal_instance(instance_id, user_id, db_session)
new_name = data.get("name")
if not new_name or not isinstance(new_name, str):
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST, detail="Name is required"
)
# Update in-memory session name if live
live_session = terminal_manager.get_session(str(instance_id), session_id)
if live_session:
live_session.name = new_name
# Update DB row
db_row = await db_session.get(TerminalSessionModel, uuid.UUID(session_id))
if db_row is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND, detail="Session not found"
)
db_row.name = new_name
await db_session.commit()
return {"id": str(db_row.id), "name": new_name}
@router.post(
"/instances/{instance_id}/terminal/reset",
summary="Reset terminal session (legacy alias)",
description="Reset the default terminal session for a tool instance. Preserved for backward compatibility.",
)
async def reset_terminal_session(
instance_id: uuid.UUID,
user_id: uuid.UUID = Depends(get_current_user_id),
db_session: AsyncSession = Depends(get_db_session),
) -> dict:
"""Reset the default terminal session for an instance (legacy alias).
Args:
instance_id: UUID of the tool instance.
user_id: ID of the authenticated user.
db_session: Database session.
Returns:
Dictionary with status message.
"""
instance = await _get_terminal_instance(instance_id, user_id, db_session)
assert instance.container_id is not None
# Fetch tool type to get startup_command
tool_type = await db_session.get(ToolType, instance.tool_type_id)
startup_command = tool_type.startup_command if tool_type else None
try:
# Reset the session
# Reset the default session
new_session = await terminal_manager.reset_session(
instance_id,
instance.container_id,
startup_command=startup_command,
)
logger.info("Terminal session reset for instance %s (new session_id=%s)", instance_id, new_session.session_id)
logger.info(
"Terminal session reset for instance %s (new session_id=%s)",
instance_id,
new_session.session_id,
)
return {
"status": "success",
"message": "Terminal session reset successfully",
@@ -289,11 +682,16 @@ async def reset_terminal_session(
"session_id": new_session.session_id,
}
except Exception as exc:
logger.error("Failed to reset terminal session for instance %s: %s", instance_id, str(exc), exc_info=True)
logger.error(
"Failed to reset terminal session for instance %s: %s",
instance_id,
str(exc),
exc_info=True,
)
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=f"Failed to reset terminal session: {exc}"
)
detail=f"Failed to reset terminal session: {exc}",
) from exc
async def _get_user_from_websocket(
+1
View File
@@ -25,6 +25,7 @@ from src.api.tool_types import router as tool_types_router
from src.api.user_config import router as user_config_router
from src.api.users import router as users_router
from src.config import Settings
from src.models.terminal_session import TerminalSessionModel # noqa: F401 Alembic model discovery
from src.database import init_database
from src.logging_config import (
ExceptionLoggingMiddleware,
+2
View File
@@ -4,6 +4,7 @@ from src.models.config_profile import ConfigProfile, ConfigProfileInclude
from src.models.git_repository import GitRepository
from src.models.project import Project
from src.models.ssh_key import SSHKey
from src.models.terminal_session import TerminalSessionModel
from src.models.tool_definition_manifest import ToolDefinitionManifest
from src.models.tool_instance import ToolInstance
from src.models.tool_type import ToolType
@@ -18,6 +19,7 @@ __all__ = [
"GitRepository",
"Project",
"SSHKey",
"TerminalSessionModel",
"ToolDefinitionManifest",
"ToolInstance",
"ToolType",
+37
View File
@@ -0,0 +1,37 @@
"""Terminal session database model."""
import uuid
from datetime import datetime
from sqlalchemy import DateTime, ForeignKey, String
from sqlalchemy import Uuid as UUID
from sqlalchemy.orm import Mapped, mapped_column
from src.models.base import Base, TimestampMixin, UUIDPrimaryKeyMixin
class TerminalSessionModel(UUIDPrimaryKeyMixin, TimestampMixin, Base):
"""Database model for terminal session metadata."""
__tablename__ = "terminal_sessions"
instance_id: Mapped[uuid.UUID] = mapped_column(
UUID(),
ForeignKey("tool_instances.id", ondelete="CASCADE"),
nullable=False,
index=True,
)
name: Mapped[str | None] = mapped_column(String(255), nullable=True)
status: Mapped[str] = mapped_column(
String(50),
nullable=False,
default="active",
)
last_activity_at: Mapped[datetime | None] = mapped_column(
DateTime(timezone=True),
nullable=True,
)
closed_at: Mapped[datetime | None] = mapped_column(
DateTime(timezone=True),
nullable=True,
)
+300 -46
View File
@@ -3,20 +3,37 @@
import asyncio
import logging
import uuid
from datetime import datetime, timezone
from fastapi import WebSocket
from src.database import SessionLocal
from src.models.terminal_session import TerminalSessionModel
from src.services.terminal_session import TerminalSession
logger = logging.getLogger(__name__)
class MaxSessionsExceededError(Exception):
"""Raised when the maximum number of terminal sessions per instance is reached."""
def __init__(self, instance_id: str, max_sessions: int = 5) -> None:
self.instance_id = instance_id
self.max_sessions = max_sessions
super().__init__(
f"Maximum of {max_sessions} terminal sessions reached for instance {instance_id}"
)
class TerminalManager:
"""Manages active terminal sessions with persistence support."""
# Maximum sessions per tool instance
MAX_SESSIONS_PER_INSTANCE = 5
def __init__(self) -> None:
# Track sessions by instance_id for persistence
self._sessions: dict[str, TerminalSession] = {}
# Track sessions by (instance_id, session_id) for multi-session support
self._sessions: dict[tuple[str, str], TerminalSession] = {}
self._idle_check_task: asyncio.Task | None = None
self._start_idle_check()
@@ -42,16 +59,131 @@ class TerminalManager:
async def _cleanup_idle_sessions(self) -> None:
"""Clean up sessions that have been idle for too long."""
idle_sessions = []
for instance_id, session in list(self._sessions.items()):
idle_keys = []
for (instance_id, session_id), session in list(self._sessions.items()):
if session.is_idle():
idle_sessions.append(instance_id)
for instance_id in idle_sessions:
logger.info("Cleaning up idle terminal session for instance %s", instance_id)
session = self._sessions.pop(instance_id, None)
idle_keys.append((instance_id, session_id))
for key in idle_keys:
instance_id, session_id = key
logger.info(
"Cleaning up idle terminal session %s for instance %s",
session_id,
instance_id,
)
session = self._sessions.pop(key, None)
if session:
await session.close()
# Update DB status fire-and-forget
asyncio.create_task(self._mark_closed_in_db(session_id))
async def _insert_db_session_row(
self,
session_id: str,
instance_id: uuid.UUID,
name: str,
) -> None:
"""Insert a TerminalSessionModel row into the database."""
try:
async with SessionLocal() as db_session:
db_row = TerminalSessionModel(
id=uuid.UUID(session_id),
instance_id=instance_id,
name=name,
status="active",
created_at=datetime.now(timezone.utc),
last_activity_at=datetime.now(timezone.utc),
)
db_session.add(db_row)
await db_session.commit()
logger.debug(
"Inserted terminal session row %s for instance %s",
session_id,
instance_id,
)
except Exception as exc:
logger.error("Failed to insert terminal session row: %s", exc)
async def _mark_closed_in_db(self, session_id: str) -> None:
"""Mark a terminal session as closed in the database."""
try:
async with SessionLocal() as db_session:
db_row = await db_session.get(
TerminalSessionModel, uuid.UUID(session_id)
)
if db_row:
db_row.status = "closed"
db_row.closed_at = datetime.now(timezone.utc)
await db_session.commit()
logger.debug(
"Marked terminal session %s as closed in DB", session_id
)
except Exception as exc:
logger.error("Failed to mark terminal session as closed in DB: %s", exc)
def _count_sessions_for_instance(self, instance_id_str: str) -> int:
"""Count active in-memory sessions for a given instance."""
return sum(1 for (iid, _sid) in self._sessions if iid == instance_id_str)
async def create_session(
self,
instance_id: uuid.UUID,
container_id: str,
startup_command: str | None = None,
name: str | None = None,
) -> TerminalSession:
"""Create a new terminal session for an instance.
Enforces a maximum of MAX_SESSIONS_PER_INSTANCE sessions per instance.
Inserts a DB row fire-and-forget.
Args:
instance_id: UUID of the tool instance.
container_id: Docker container ID.
startup_command: Optional startup command to run.
name: Optional session name (auto-generated if omitted).
Returns:
The newly created TerminalSession.
Raises:
MaxSessionsExceededError: If the instance already has max sessions.
"""
instance_id_str = str(instance_id)
if (
self._count_sessions_for_instance(instance_id_str)
>= self.MAX_SESSIONS_PER_INSTANCE
):
raise MaxSessionsExceededError(
instance_id_str, self.MAX_SESSIONS_PER_INSTANCE
)
session_id = str(uuid.uuid4())
session = TerminalSession(
session_id=session_id,
instance_id=instance_id,
container_id=container_id,
startup_command=startup_command,
name=name,
)
await session.start(startup_command=startup_command)
key = (instance_id_str, session_id)
self._sessions[key] = session
# Fire-and-forget DB insert
asyncio.create_task(
self._insert_db_session_row(session_id, instance_id, session.name)
)
logger.info(
"Created terminal session %s for instance %s (name=%s)",
session_id,
instance_id,
session.name,
)
return session
async def get_or_create_session(
self,
@@ -59,61 +191,146 @@ class TerminalManager:
container_id: str,
startup_command: str | None = None,
) -> TerminalSession:
"""Get existing session or create a new one."""
"""Get existing session or create a new one.
Backward-compatible alias that uses 'default' as the session_id.
"""
# Ensure idle check is running (lazy start)
self._start_idle_check()
instance_id_str = str(instance_id)
# Check for existing session
if instance_id_str in self._sessions:
session = self._sessions[instance_id_str]
key = (instance_id_str, "default")
# Check for existing default session
if key in self._sessions:
session = self._sessions[key]
# Check if session is still alive
if session.is_alive():
logger.debug("Reattaching to existing terminal session for instance %s", instance_id)
logger.debug(
"Reattaching to existing terminal session for instance %s",
instance_id,
)
return session
else:
# Session died, clean it up
logger.debug("Existing session for instance %s is dead, cleaning up", instance_id)
logger.debug(
"Existing session for instance %s is dead, cleaning up",
instance_id,
)
await session.close()
del self._sessions[instance_id_str]
# Create new session
logger.info("Creating new terminal session for instance %s", instance_id)
del self._sessions[key]
# Create new default session
logger.info(
"Creating new default terminal session for instance %s", instance_id
)
session_id = str(uuid.uuid4())
session = TerminalSession(session_id, instance_id, container_id, startup_command=startup_command)
session = TerminalSession(
session_id=session_id,
instance_id=instance_id,
container_id=container_id,
startup_command=startup_command,
name="Session 1",
)
await session.start(startup_command=startup_command)
self._sessions[instance_id_str] = session
self._sessions[key] = session
# Fire-and-forget DB insert
asyncio.create_task(
self._insert_db_session_row(session_id, instance_id, session.name)
)
return session
def get_session(
self,
instance_id: str,
session_id: str,
) -> TerminalSession | None:
"""Lookup a session by composite key, or by internal session_id."""
session = self._sessions.get((instance_id, session_id))
if session is not None:
return session
# Fallback: search by internal TerminalSession.session_id
for (iid, _sid), sess in self._sessions.items():
if iid == instance_id and sess.session_id == session_id:
return sess
return None
def _find_key_by_internal_id(
self,
instance_id: str,
internal_session_id: str,
) -> tuple[str, str] | None:
"""Find the manager dict key for a session by its internal session_id."""
for (iid, sid), session in self._sessions.items():
if iid == instance_id and session.session_id == internal_session_id:
return (iid, sid)
return None
def get_sessions_for_instance(
self,
instance_id: str,
) -> list[TerminalSession]:
"""Return all in-memory sessions for a given instance."""
return [
session
for (iid, _sid), session in self._sessions.items()
if iid == instance_id
]
async def close_session(
self,
instance_id: str,
session_id: str,
) -> None:
"""Close a specific session and update its DB status."""
key = (instance_id, session_id)
session = self._sessions.pop(key, None)
if session:
await session.close()
# Fire-and-forget DB update
asyncio.create_task(self._mark_closed_in_db(session_id))
logger.info(
"Closed terminal session %s for instance %s",
session_id,
instance_id,
)
async def attach_websocket(
self,
session: TerminalSession,
websocket: WebSocket,
) -> None:
"""Attach a WebSocket to an existing session."""
# Handle concurrent connections - close existing ones
"""Attach a WebSocket to an existing session.
Closes existing WebSocket connections only for this specific session.
"""
# Handle concurrent connections - close existing ones within the same session
if session.has_websockets():
logger.debug("Closing existing WebSocket connections for instance %s", session.instance_id)
logger.debug(
"Closing existing WebSocket connections for session %s (instance %s)",
session.session_id,
session.instance_id,
)
for ws in list(session._websockets):
try:
await ws.close(code=4000, reason="New connection established")
except Exception:
pass
pass # noqa: S110
session._websockets.clear()
# Attach new WebSocket
session.attach_websocket(websocket)
# Replay buffer
buffer = session.get_buffer()
if buffer:
try:
await websocket.send_bytes(buffer)
except Exception:
pass
pass # noqa: S110
async def detach_websocket(
self,
@@ -128,23 +345,60 @@ class TerminalManager:
instance_id: uuid.UUID,
container_id: str,
startup_command: str | None = None,
session_id: str | None = None,
name: str | None = None,
) -> TerminalSession:
"""Reset a session by killing it and creating a new one."""
"""Reset a session by killing it and creating a new one.
Args:
instance_id: UUID of the tool instance.
container_id: Docker container ID.
startup_command: Optional startup command.
session_id: Specific session to reset. If None, resets the default session.
name: Optional name to preserve for the new session.
Returns:
The newly created TerminalSession.
"""
instance_id_str = str(instance_id)
target_session_id = session_id or "default"
key = (instance_id_str, target_session_id)
# Preserve old name if not provided
old_name = name
if old_name is None and key in self._sessions:
old_name = self._sessions[key].name
# Close existing session if any
if instance_id_str in self._sessions:
logger.debug("Resetting terminal session for instance %s", instance_id)
old_session = self._sessions.pop(instance_id_str)
if key in self._sessions:
logger.debug(
"Resetting terminal session %s for instance %s",
target_session_id,
instance_id,
)
old_session = self._sessions.pop(key)
await old_session.close()
# Create new session
session_id = str(uuid.uuid4())
session = TerminalSession(session_id, instance_id, container_id, startup_command=startup_command)
await session.start(startup_command=startup_command)
self._sessions[instance_id_str] = session
return session
# Fire-and-forget DB update for old session
asyncio.create_task(self._mark_closed_in_db(old_session.session_id))
# Create new session preserving the same session_id slot
new_session_id = str(uuid.uuid4())
new_session = TerminalSession(
session_id=new_session_id,
instance_id=instance_id,
container_id=container_id,
startup_command=startup_command,
name=old_name or ("Session 1" if target_session_id == "default" else None),
)
await new_session.start(startup_command=startup_command)
self._sessions[key] = new_session
# Fire-and-forget DB insert
asyncio.create_task(
self._insert_db_session_row(new_session_id, instance_id, new_session.name)
)
return new_session
async def close_all(self) -> None:
"""Close all active sessions."""
@@ -152,7 +406,7 @@ class TerminalManager:
self._sessions.clear()
for session in sessions:
await session.close()
if self._idle_check_task and not self._idle_check_task.done():
self._idle_check_task.cancel()
+55 -23
View File
@@ -18,18 +18,28 @@ logger = logging.getLogger(__name__)
class TerminalSession:
"""Manages a single terminal session connected to a docker container.
Supports persistent sessions that survive WebSocket disconnections.
Multiple WebSocket connections can attach/detach from the same session.
"""
# Circular buffer size (10KB)
BUFFER_SIZE = 10 * 1024
# Idle timeout in seconds (30 minutes)
IDLE_TIMEOUT = 30 * 60
def __init__(self, session_id: str, instance_id: uuid.UUID, container_id: str, startup_command: str | None = None) -> None:
# Session number counter per instance_id for auto-naming
_instance_counters: dict[str, int] = {}
def __init__(
self,
session_id: str,
instance_id: uuid.UUID,
container_id: str,
startup_command: str | None = None,
name: str | None = None,
) -> None:
self.session_id = session_id
self.instance_id = instance_id
self.container_id = container_id
@@ -38,37 +48,52 @@ class TerminalSession:
self._closed = False
self._master_fd: int | None = None
self._slave_fd: int | None = None
# Circular buffer for output replay
self._output_buffer: deque[bytes] = deque(maxlen=self.BUFFER_SIZE)
self._buffer_size = 0
# WebSocket connections
self._websockets: set[Any] = set()
# Activity tracking
self.last_activity = time.time()
# Terminal size
self._cols = 80
self._rows = 24
# Session metadata
self.name = name or self._generate_name(str(instance_id))
self.status: str = "active"
@classmethod
def _generate_name(cls, instance_id: str) -> str:
"""Generate an auto-incremented session name for the instance."""
count = cls._instance_counters.get(instance_id, 0) + 1
cls._instance_counters[instance_id] = count
return f"Session {count}"
async def start(self, startup_command: str | None = None) -> None:
"""Start the docker exec process with a shell using a PTY."""
# Create a pseudo-terminal on the host
self._master_fd, self._slave_fd = pty.openpty()
# Set the terminal size initially
self._set_terminal_size(self._cols, self._rows)
logger.debug(f"Starting terminal session {self.session_id} for container {self.container_id} with initial size {self._cols}x{self._rows}")
logger.debug(
f"Starting terminal session {self.session_id} for container {self.container_id} with initial size {self._cols}x{self._rows}"
)
# Build the shell command
if startup_command:
shell_cmd = f'bash -c "{startup_command}" || true; exec bash -il'
logger.debug(f"Using startup command for session {self.session_id}: {startup_command}")
logger.debug(
f"Using startup command for session {self.session_id}: {startup_command}"
)
else:
shell_cmd = "bash -il"
# Start docker exec with the slave fd as stdin/stdout/stderr
# Using -it because the slave fd IS a TTY
self.process = await asyncio.create_subprocess_exec(
@@ -85,11 +110,11 @@ class TerminalSession:
stdout=self._slave_fd,
stderr=self._slave_fd,
)
# Close slave fd in parent process
os.close(self._slave_fd)
self._slave_fd = None
self.last_activity = time.time()
def _set_terminal_size(self, cols: int, rows: int) -> None:
@@ -99,7 +124,7 @@ class TerminalSession:
return
# TIOCSWINSZ = 0x5414 on Linux
TIOCSWINSZ = 0x5414
size = struct.pack('HHHH', rows, cols, 0, 0)
size = struct.pack("HHHH", rows, cols, 0, 0)
try:
fcntl.ioctl(self._master_fd, TIOCSWINSZ, size)
logger.debug(f"Resized PTY to {cols}x{rows} (fd={self._master_fd})")
@@ -127,7 +152,7 @@ class TerminalSession:
"""Add data to circular buffer, maintaining size limit."""
self._output_buffer.append(data)
self._buffer_size += len(data)
# Trim if exceeds max size
while self._buffer_size > self.BUFFER_SIZE and self._output_buffer:
removed = self._output_buffer.popleft()
@@ -152,16 +177,16 @@ class TerminalSession:
if self._closed:
logger.warning("Cannot resize: session is closed")
return
# Only resize if dimensions actually changed
if cols == self._cols and rows == self._rows:
return
self._cols = cols
self._rows = rows
logger.debug(f"resize() called for session {self.session_id}: {cols}x{rows}")
self._set_terminal_size(cols, rows)
# Docker exec -it creates its own PTY inside the container,
# so host PTY resize doesn't propagate to the container shell.
# Send SIGWINCH to the docker exec process on the host.
@@ -170,14 +195,19 @@ class TerminalSession:
if self.process and self.process.pid:
try:
os.kill(self.process.pid, signal.SIGWINCH)
logger.debug(f"Sent SIGWINCH to docker exec process {self.process.pid} for session {self.session_id}")
logger.debug(
f"Sent SIGWINCH to docker exec process {self.process.pid} for session {self.session_id}"
)
except ProcessLookupError:
logger.warning(f"docker exec process {self.process.pid} not found for session {self.session_id}")
logger.warning(
f"docker exec process {self.process.pid} not found for session {self.session_id}"
)
except Exception as e:
logger.warning(f"Failed to send SIGWINCH: {e}")
async def reset(self) -> None:
"""Reset the session by killing the process and clearing state."""
self.status = "resetting"
await self.close()
self._closed = False
self._output_buffer.clear()
@@ -186,18 +216,20 @@ class TerminalSession:
self.process = None
self._master_fd = None
self._slave_fd = None
self.status = "active"
async def close(self) -> None:
"""Close the session and cleanup."""
if self._closed:
return
self._closed = True
self.status = "closed"
if self._master_fd is not None:
try:
os.close(self._master_fd)
except OSError:
pass
pass # noqa: S110
self._master_fd = None
if self.process is not None:
@@ -240,7 +272,7 @@ class TerminalSession:
await ws.send_bytes(data)
except Exception:
dead_sockets.add(ws)
# Clean up dead sockets
for ws in dead_sockets:
self._websockets.discard(ws)