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91 lines
3.4 KiB
Python
91 lines
3.4 KiB
Python
"""
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Model for terminal sessions - stores SSH terminal session metadata.
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"""
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from __future__ import annotations
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from datetime import datetime
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from typing import Optional
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from sqlalchemy import DateTime, Index, Integer, String, text
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from sqlalchemy.orm import Mapped, mapped_column
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from sqlalchemy.sql import func
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from .database import Base
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# Session status constants
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SESSION_STATUS_STARTING = "starting"
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SESSION_STATUS_ACTIVE = "active"
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SESSION_STATUS_CLOSING = "closing"
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SESSION_STATUS_CLOSED = "closed"
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SESSION_STATUS_EXPIRED = "expired"
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SESSION_STATUS_ERROR = "error"
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# Close reason constants
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CLOSE_REASON_USER = "user_close"
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CLOSE_REASON_TTL = "ttl"
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CLOSE_REASON_IDLE = "idle"
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CLOSE_REASON_QUOTA = "quota"
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CLOSE_REASON_SERVER_SHUTDOWN = "server_shutdown"
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CLOSE_REASON_CLIENT_LOST = "client_lost"
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CLOSE_REASON_REUSED = "reused"
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class TerminalSession(Base):
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"""
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Represents an active or recent SSH terminal session.
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Sessions are created when a user opens a terminal to a host,
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and cleaned up after expiration or manual closure.
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Status lifecycle:
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- starting: Session being created, ttyd spawning
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- active: Session running, client connected
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- closing: Session being terminated
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- closed: Session terminated normally
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- expired: Session terminated due to TTL/idle timeout
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- error: Session terminated due to error
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"""
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__tablename__ = "terminal_sessions"
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__table_args__ = (
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Index('ix_terminal_sessions_user_status', 'user_id', 'status'),
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Index('ix_terminal_sessions_last_seen', 'last_seen_at'),
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)
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id: Mapped[str] = mapped_column(String(64), primary_key=True)
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host_id: Mapped[str] = mapped_column(String, nullable=False, index=True)
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host_name: Mapped[str] = mapped_column(String, nullable=False)
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host_ip: Mapped[str] = mapped_column(String, nullable=False)
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user_id: Mapped[Optional[str]] = mapped_column(String, nullable=True)
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username: Mapped[Optional[str]] = mapped_column(String, nullable=True)
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# Token hash for session authentication (never store plain token)
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token_hash: Mapped[str] = mapped_column(String(128), nullable=False)
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# ttyd process management
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ttyd_port: Mapped[int] = mapped_column(Integer, nullable=False)
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ttyd_pid: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
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# Session mode: 'embedded' or 'popout'
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mode: Mapped[str] = mapped_column(String(20), nullable=False, server_default=text("'embedded'"))
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# Session status: 'starting', 'active', 'closing', 'closed', 'expired', 'error'
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status: Mapped[str] = mapped_column(String(20), nullable=False, server_default=text("'active'"))
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# Close reason: 'user_close', 'ttl', 'idle', 'quota', 'server_shutdown', 'client_lost', 'reused'
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reason_closed: Mapped[Optional[str]] = mapped_column(String(30), nullable=True)
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# Timestamps
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True), nullable=False, server_default=func.now()
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)
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last_seen_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True), nullable=False, server_default=func.now()
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)
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expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
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closed_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
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def __repr__(self) -> str:
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return f"<TerminalSession id={self.id[:8]}... host={self.host_name} status={self.status}>"
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