liumangmang
6cc797f915
- Retain login state in remote browser profiles (don't delete on disconnect)
- Add GET /api/browser-sessions/{id}/clipboard for clipboard sync
- Add POST /api/browser-sessions/{id}/autofill-login for manual credential fill
- Add DELETE /api/browser-sessions/profiles/{custom_page_id} for login clear
- Add balance tracking with configurable divisor (balance_divisor)
- Health check on session reuse, idle TTL eviction, background cleanup
- Add first-frame watchdog (10s timeout) to prevent infinite loading
- Reconnect browser on active=true when session was closed
- UI: uniform text-only inline buttons (websites + upstreams pages)
- Fix page switch race with closingRemoteSessionPromise
618 lines
26 KiB
Python
618 lines
26 KiB
Python
"""Managed Playwright browser sessions for custom pages."""
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from __future__ import annotations
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import asyncio
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import logging
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import re
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import time
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Any, Optional
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from urllib.parse import urlparse
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from uuid import uuid4
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from app.config import get_settings
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logger = logging.getLogger(__name__)
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class BrowserDependencyError(RuntimeError):
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"""Raised when Playwright or its browser runtime is unavailable."""
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class BrowserSessionError(RuntimeError):
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"""Raised when an existing browser session can no longer be used."""
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@dataclass
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class BrowserSession:
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id: str
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custom_page_id: int
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profile_key: str
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context: Any
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page: Any
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lock: asyncio.Lock
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cdp_session: Any = None
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captured_headers: list[dict] = None # auth headers from CDP
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class BrowserSessionService:
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# Idle TTL: close sessions that haven't had activity for this long
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IDLE_TTL_SECONDS = 1800 # 30 minutes
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# Cap: max concurrent persistent sessions (excludes auth-capture)
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MAX_SESSIONS = 10
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def __init__(self) -> None:
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self._playwright: Optional[Any] = None
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self._sessions: dict[str, BrowserSession] = {}
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self._profiles: dict[str, str] = {}
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self._lock = asyncio.Lock()
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self._last_event_at: dict[str, float] = {}
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self._evict_task: Optional[asyncio.Task[None]] = None
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async def create(
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self,
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custom_page_id: int,
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url: str,
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width: int = 1280,
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height: int = 720,
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login_config: Optional[dict[str, Any]] = None,
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) -> BrowserSession:
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if not url.startswith(("http://", "https://")):
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raise ValueError("Only http/https URLs are allowed")
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width = max(320, min(width, 2560))
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height = max(240, min(height, 1600))
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async with self._lock:
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await self._ensure_playwright()
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profile_key = self._profile_key(custom_page_id, url)
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existing_id = self._profiles.get(profile_key)
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existing = self._sessions.get(existing_id or "")
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if existing and not existing.page.is_closed():
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# Health check: verify session can actually serve content
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healthy = True
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try:
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async with existing.lock:
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url_before = existing.page.url
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await existing.page.evaluate("1") # ping
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await existing.page.screenshot(type="jpeg", quality=10, timeout=5000)
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await existing.page.set_viewport_size({"width": width, "height": height})
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if url_before == "about:blank":
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await existing.page.goto(url, wait_until="domcontentloaded", timeout=45000)
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await self._autofill_login(existing.page, login_config)
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await self._reset_page_zoom(existing)
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self._touch(existing.id)
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except Exception:
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logger.info("existing session %s unhealthy, recreating", existing.id[:12])
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healthy = False
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if healthy:
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return existing
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# Close unhealthy session (profile stays on disk)
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await self.close(existing.id)
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if existing_id:
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self._profiles.pop(profile_key, None)
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# Idle cleanup: close stale sessions before spawning new ones
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await self._evict_idle_sessions()
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context = await self._playwright.chromium.launch_persistent_context(
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str(self._profile_dir(profile_key)),
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headless=get_settings().browser_headless,
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viewport={"width": width, "height": height},
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args=["--no-sandbox", "--disable-dev-shm-usage"],
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)
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# Grant clipboard access for the page origin
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try:
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parsed = urlparse(url)
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origin = f"{parsed.scheme}://{parsed.netloc}"
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await context.grant_permissions(["clipboard-read", "clipboard-write"], origin=origin)
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except Exception:
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logger.debug("clipboard permission grant failed (non-fatal)")
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page = context.pages[0] if context.pages else await context.new_page()
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session = BrowserSession(
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id=uuid4().hex,
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custom_page_id=custom_page_id,
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profile_key=profile_key,
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context=context,
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page=page,
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lock=asyncio.Lock(),
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)
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self._sessions[session.id] = session
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self._profiles[profile_key] = session.id
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self._touch(session.id)
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# Evict again after adding the new session so cap is enforced immediately
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await self._evict_idle_sessions()
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try:
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await page.goto(url, wait_until="domcontentloaded", timeout=45000)
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await self._autofill_login(page, login_config)
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await self._reset_page_zoom(session)
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except Exception:
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await self.close(session.id)
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raise
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return session
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def _touch(self, session_id: str) -> None:
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"""Mark a session as recently active (reset idle timer)."""
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self._last_event_at[session_id] = asyncio.get_event_loop().time()
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async def screenshot(self, session_id: str) -> bytes:
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session = self._get(session_id)
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self._touch(session_id)
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async with session.lock:
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self._ensure_open(session)
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return await session.page.screenshot(type="jpeg", quality=65, full_page=False)
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async def event(
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self,
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session_id: str,
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event_type: str,
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payload: dict[str, Any],
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*,
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include_state: bool = True,
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) -> dict[str, Any] | None:
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session = self._get(session_id)
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self._last_event_at[session_id] = asyncio.get_event_loop().time()
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async with session.lock:
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self._ensure_open(session)
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page = session.page
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if event_type == "click":
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await page.mouse.click(float(payload["x"]), float(payload["y"]), button=payload.get("button", "left"))
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elif event_type == "dblclick":
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await page.mouse.dblclick(float(payload["x"]), float(payload["y"]), button=payload.get("button", "left"))
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elif event_type == "mousemove":
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await page.mouse.move(float(payload["x"]), float(payload["y"]))
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elif event_type == "mousedown":
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await page.mouse.move(float(payload["x"]), float(payload["y"]))
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await page.mouse.down(button=payload.get("button", "left"))
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elif event_type == "mouseup":
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await page.mouse.move(float(payload["x"]), float(payload["y"]))
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await page.mouse.up(button=payload.get("button", "left"))
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elif event_type == "type":
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text = str(payload.get("text", ""))
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if text:
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await page.keyboard.insert_text(text)
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elif event_type == "key":
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key = str(payload.get("key", ""))
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if key:
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await page.keyboard.press(key)
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elif event_type == "scroll":
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if payload.get("x") is not None and payload.get("y") is not None:
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await page.mouse.move(float(payload["x"]), float(payload["y"]))
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await page.mouse.wheel(float(payload.get("delta_x", 0)), float(payload.get("delta_y", 0)))
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elif event_type == "reload":
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await page.reload(wait_until="domcontentloaded", timeout=45000)
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elif event_type == "back":
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await page.go_back(wait_until="domcontentloaded", timeout=45000)
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elif event_type == "forward":
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await page.go_forward(wait_until="domcontentloaded", timeout=45000)
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elif event_type == "resize":
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width = max(320, min(int(payload.get("width", 1280)), 2560))
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height = max(240, min(int(payload.get("height", 720)), 1600))
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await page.set_viewport_size({"width": width, "height": height})
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else:
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raise ValueError("Unsupported browser event")
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if not include_state:
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return None
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return await self._session_state(session)
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async def selected_text(self, session_id: str) -> str:
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session = self._get(session_id)
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self._touch(session_id)
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async with session.lock:
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self._ensure_open(session)
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value = await session.page.evaluate("() => window.getSelection()?.toString() || ''")
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return str(value or "")
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async def read_clipboard(self, session_id: str) -> tuple[Optional[str], Optional[str]]:
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"""Read the remote browser's clipboard text.
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Returns (text, error_reason).
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text is None when the clipboard is empty or unreadable.
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error_reason is None on success or "empty" — non-None indicates a genuine failure.
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"""
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session = self._get(session_id)
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self._touch(session_id)
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async with session.lock:
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self._ensure_open(session)
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try:
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result = await session.page.evaluate("""
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async () => {
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try {
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const text = await navigator.clipboard.readText();
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return text || null;
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} catch (e) {
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if (e instanceof DOMException) {
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if (e.name === 'NotAllowedError') return 'ERROR:denied';
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if (e.name === 'NotFoundError') return null;
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}
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return 'ERROR:' + (e.message || String(e));
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}
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}
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""")
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if result is None:
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return None, None # empty clipboard
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if isinstance(result, str) and result.startswith("ERROR:"):
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reason = result[6:]
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logger.debug("clipboard read error for %s: %s", session_id[:12], reason)
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return None, reason
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return str(result), None
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except Exception as exc:
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logger.warning("clipboard read failed for %s: %s", session_id[:12], exc)
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return None, "read_failed"
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async def close(self, session_id: str) -> None:
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self._last_event_at.pop(session_id, None)
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session = self._discard_session(session_id)
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if not session:
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return
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# Detach CDP session if active
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if session.cdp_session:
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try:
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await session.cdp_session.detach()
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except Exception:
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pass
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try:
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await session.context.close()
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except Exception:
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pass
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# Clean up ephemeral (auth-capture) profile directories
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if session.profile_key and session.profile_key.startswith("auth-capture-"):
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profile_dir = self._profile_dir(session.profile_key)
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import shutil
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try:
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shutil.rmtree(profile_dir, ignore_errors=True)
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except Exception:
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pass
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async def shutdown(self) -> None:
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# Cancel the background eviction loop
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if self._evict_task is not None and not self._evict_task.done():
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self._evict_task.cancel()
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try:
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await self._evict_task
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except asyncio.CancelledError:
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pass
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self._evict_task = None
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sessions = list(self._sessions)
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for session_id in sessions:
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await self.close(session_id)
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if self._playwright:
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await self._playwright.stop()
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self._playwright = None
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async def state(self, session_id: str) -> dict[str, Any]:
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session = self._get(session_id)
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self._touch(session_id)
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async with session.lock:
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self._ensure_open(session)
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return await self._session_state(session)
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async def _session_state(self, session: BrowserSession) -> dict[str, Any]:
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return {
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"id": session.id,
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"custom_page_id": session.custom_page_id,
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"url": session.page.url,
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"title": await session.page.title(),
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}
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async def _ensure_playwright(self) -> None:
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if self._playwright:
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return
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try:
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from playwright.async_api import async_playwright
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except ImportError as exc:
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raise BrowserDependencyError("Playwright is not installed. Run `pip install -r requirements.txt`.") from exc
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try:
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self._playwright = await async_playwright().start()
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except Exception as exc:
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raise BrowserDependencyError(f"Unable to start Playwright: {exc}") from exc
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# Start background eviction loop
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if self._evict_task is None or self._evict_task.done():
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self._evict_task = asyncio.create_task(self._evict_loop())
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async def _reset_page_zoom(self, session: BrowserSession) -> None:
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try:
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cdp = await session.context.new_cdp_session(session.page)
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try:
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await cdp.send("Emulation.setPageScaleFactor", {"pageScaleFactor": 1})
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finally:
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await cdp.detach()
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except Exception:
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pass
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async def autofill_login(
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self,
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session_id: str,
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login_config: Optional[dict[str, Any]],
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) -> bool:
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"""Public: manually trigger login autofill for an active session.
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Only fills username/password fields — never auto-submits.
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Returns True if fields were found and filled, False otherwise.
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Never returns password data to the caller.
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"""
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session = self._get(session_id)
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self._touch(session_id)
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async with session.lock:
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self._ensure_open(session)
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return await self._autofill_login(session.page, login_config, max_wait_seconds=3.0, skip_submit=True)
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async def _autofill_login(
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self,
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page: Any,
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config: Optional[dict[str, Any]],
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*,
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max_wait_seconds: float = 2.0,
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poll_interval_seconds: float = 0.25,
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skip_submit: bool = False,
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) -> bool:
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if not config or not config.get("enabled"):
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return False
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username = str(config.get("username") or "")
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password = str(config.get("password") or "")
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if not username or not password:
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return False
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try:
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username_selectors = [
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config.get("username_selector"),
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"input[type='email']",
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"input[name*='user' i]",
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"input[id*='user' i]",
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"input[name*='email' i]",
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"input[id*='email' i]",
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"input[name*='login' i]",
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"input[id*='login' i]",
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"input[autocomplete='username']",
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"input:not([type]), input[type='text']",
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]
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password_selectors = [
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config.get("password_selector"),
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"input[type='password']",
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"input[autocomplete='current-password']",
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]
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username_locator, password_locator = await self._wait_for_login_locators(
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page,
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username_selectors,
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password_selectors,
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max_wait_seconds=max_wait_seconds,
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poll_interval_seconds=poll_interval_seconds,
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)
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if not username_locator or not password_locator:
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logger.info("Login autofill skipped: login fields not found")
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return False
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await username_locator.fill(username, timeout=3000)
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await password_locator.fill(password, timeout=3000)
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if not skip_submit:
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submit_selector = str(config.get("submit_selector") or "").strip()
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if submit_selector:
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submit = await self._first_visible_locator(page, [submit_selector], timeout=500)
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if submit:
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await submit.click(timeout=3000)
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return True
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except Exception as exc:
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logger.info("Login autofill skipped: %s", exc)
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return False
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async def _wait_for_login_locators(
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self,
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page: Any,
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username_selectors: list[Optional[str]],
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password_selectors: list[Optional[str]],
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*,
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max_wait_seconds: float,
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poll_interval_seconds: float,
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) -> tuple[Optional[Any], Optional[Any]]:
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deadline = time.monotonic() + max_wait_seconds
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while True:
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username_locator = await self._first_visible_locator(page, username_selectors, timeout=150)
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password_locator = await self._first_visible_locator(page, password_selectors, timeout=150)
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if username_locator and password_locator:
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return username_locator, password_locator
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if time.monotonic() >= deadline:
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return None, None
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await asyncio.sleep(poll_interval_seconds)
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async def _first_visible_locator(
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self,
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page: Any,
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selectors: list[Optional[str]],
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*,
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timeout: float = 1500,
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) -> Optional[Any]:
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for selector in selectors:
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selector = str(selector or "").strip()
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if not selector:
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continue
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try:
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locator = page.locator(selector).first
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if await locator.count() and await locator.is_visible(timeout=timeout):
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return locator
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except Exception:
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continue
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return None
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def get_session(self, session_id: str) -> BrowserSession:
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"""Retrieve a session by id — raises KeyError if missing."""
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session = self._sessions.get(session_id)
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if not session:
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raise KeyError("browser session not found")
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return session
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def find_by_page_id(self, custom_page_id: int) -> BrowserSession:
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"""Find the active session for a custom page. Raises KeyError if none."""
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for session in self._sessions.values():
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if session.custom_page_id == custom_page_id and not session.page.is_closed():
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return session
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raise KeyError(f"no active browser session for page {custom_page_id}")
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_get = get_session # alias for internal use
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def _ensure_open(self, session: BrowserSession) -> None:
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if session.page.is_closed():
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self._discard_session(session.id)
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raise BrowserSessionError("browser page is closed")
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def _discard_session(self, session_id: str) -> BrowserSession | None:
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session = self._sessions.pop(session_id, None)
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if session and self._profiles.get(session.profile_key) == session_id:
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self._profiles.pop(session.profile_key, None)
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return session
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async def _evict_loop(self) -> None:
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"""Background loop that runs every 5 minutes to evict idle sessions."""
|
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while True:
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await asyncio.sleep(300) # 5 minutes
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try:
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await self._evict_idle_sessions()
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except Exception:
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logger.exception("idle eviction loop error")
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async def _evict_idle_sessions(self) -> None:
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"""Close oldest idle sessions when over cap, or any past TTL."""
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now = asyncio.get_event_loop().time()
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# First: drop sessions past idle TTL (excluding just-created ones)
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to_remove: list[str] = []
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for sid, session in self._sessions.items():
|
|
if session.profile_key and session.profile_key.startswith("auth-capture-"):
|
|
continue # ephemeral sessions are handled separately
|
|
last_active = self._last_event_at.get(sid, 0.0)
|
|
if last_active > 0 and (now - last_active) > self.IDLE_TTL_SECONDS:
|
|
to_remove.append(sid)
|
|
for sid in to_remove:
|
|
logger.info("evicting idle session %s (no activity for >%ds)", sid[:12], self.IDLE_TTL_SECONDS)
|
|
await self.close(sid)
|
|
|
|
# Second: if still over cap, evict oldest by last_event_at
|
|
persistent = [(sid, s) for sid, s in self._sessions.items()
|
|
if not (s.profile_key or "").startswith("auth-capture-")]
|
|
if len(persistent) > self.MAX_SESSIONS:
|
|
persistent.sort(key=lambda x: self._last_event_at.get(x[0], 0.0))
|
|
excess = len(persistent) - self.MAX_SESSIONS
|
|
for sid, _ in persistent[:excess]:
|
|
logger.info("evicting session %s (over cap of %d)", sid[:12], self.MAX_SESSIONS)
|
|
await self.close(sid)
|
|
|
|
async def clear_profile(self, custom_page_id: int, url: str) -> None:
|
|
"""Close session for the page if active, then delete profile directory.
|
|
|
|
Raises RuntimeError if the directory cannot be fully removed.
|
|
"""
|
|
import shutil
|
|
# Close active session and use its profile_key (precise match)
|
|
profile_key: Optional[str] = None
|
|
try:
|
|
session = self.find_by_page_id(custom_page_id)
|
|
profile_key = session.profile_key
|
|
await self.close(session.id)
|
|
except KeyError:
|
|
pass
|
|
|
|
# Fallback: compute from URL (may be wrong if URL changed since session was created)
|
|
if not profile_key:
|
|
profile_key = self._profile_key(custom_page_id, url)
|
|
|
|
profile_dir = self._profile_dir(profile_key)
|
|
if profile_dir.exists():
|
|
shutil.rmtree(profile_dir) # no ignore_errors — let failure surface
|
|
if profile_dir.exists():
|
|
raise RuntimeError(
|
|
f"Failed to fully remove browser profile directory: {profile_dir}"
|
|
)
|
|
logger.info("cleared browser profile for page %d: %s", custom_page_id, profile_dir)
|
|
|
|
def _profile_dir(self, profile_key: str) -> Path:
|
|
root = Path(get_settings().browser_profiles_dir)
|
|
root.mkdir(parents=True, exist_ok=True)
|
|
profile = root / profile_key
|
|
profile.mkdir(parents=True, exist_ok=True)
|
|
return profile
|
|
|
|
def _profile_key(self, custom_page_id: int, url: str) -> str:
|
|
parsed = urlparse(url)
|
|
origin = f"{parsed.scheme}-{parsed.netloc}".lower()
|
|
safe_origin = re.sub(r"[^a-z0-9_.-]+", "_", origin).strip("_") or "page"
|
|
return f"page-{custom_page_id}-{safe_origin[:80]}"
|
|
|
|
async def create_ephemeral(
|
|
self,
|
|
url: str,
|
|
width: int = 1280,
|
|
height: int = 720,
|
|
) -> BrowserSession:
|
|
"""Create a temporary browser session without a CustomPage record.
|
|
|
|
The session uses an isolated random-named profile so it never collides
|
|
with persistent custom-page profiles. Caller MUST close() when done.
|
|
"""
|
|
if not url.startswith(("http://", "https://")):
|
|
raise ValueError("Only http/https URLs are allowed")
|
|
width = max(320, min(width, 2560))
|
|
height = max(240, min(height, 1600))
|
|
async with self._lock:
|
|
await self._ensure_playwright()
|
|
session_id = uuid4().hex
|
|
profile_key = f"auth-capture-{session_id[:12]}"
|
|
context = await self._playwright.chromium.launch_persistent_context(
|
|
str(self._profile_dir(profile_key)),
|
|
headless=get_settings().browser_headless,
|
|
viewport={"width": width, "height": height},
|
|
args=["--no-sandbox", "--disable-dev-shm-usage"],
|
|
)
|
|
# Grant clipboard access for the page origin
|
|
try:
|
|
parsed = urlparse(url)
|
|
origin = f"{parsed.scheme}://{parsed.netloc}"
|
|
await context.grant_permissions(["clipboard-read", "clipboard-write"], origin=origin)
|
|
except Exception:
|
|
logger.debug("clipboard permission grant failed (non-fatal)")
|
|
page = context.pages[0] if context.pages else await context.new_page()
|
|
session = BrowserSession(
|
|
id=session_id,
|
|
custom_page_id=0,
|
|
profile_key=profile_key,
|
|
context=context,
|
|
page=page,
|
|
lock=asyncio.Lock(),
|
|
captured_headers=[],
|
|
)
|
|
self._sessions[session.id] = session
|
|
self._touch(session.id)
|
|
# Start CDP network capture BEFORE the initial page load,
|
|
# so we capture login redirects and auth headers from the start.
|
|
await self._start_cdp_capture(session)
|
|
try:
|
|
await page.goto(url, wait_until="domcontentloaded", timeout=45000)
|
|
except Exception:
|
|
await self.close(session.id)
|
|
raise
|
|
return session
|
|
|
|
async def _start_cdp_capture(self, session: BrowserSession) -> None:
|
|
"""Enable CDP Network domain and capture Authorization headers."""
|
|
try:
|
|
cdp = await session.context.new_cdp_session(session.page)
|
|
await cdp.send("Network.enable")
|
|
|
|
def on_request(params: dict) -> None:
|
|
headers = params.get("request", {}).get("headers", {})
|
|
auth = headers.get("authorization") or headers.get("Authorization")
|
|
api_key = headers.get("x-api-key") or headers.get("X-API-Key")
|
|
url = params.get("request", {}).get("url", "")
|
|
if auth:
|
|
session.captured_headers.append({
|
|
"type": "authorization",
|
|
"value": auth,
|
|
"url": url,
|
|
})
|
|
if api_key:
|
|
session.captured_headers.append({
|
|
"type": "api_key",
|
|
"value": api_key,
|
|
"url": url,
|
|
})
|
|
|
|
cdp.on("Network.requestWillBeSent", on_request)
|
|
session.cdp_session = cdp
|
|
except Exception as exc:
|
|
logger.debug("CDP capture not available: %s", exc)
|
|
|
|
|
|
browser_sessions = BrowserSessionService()
|