agent-Specialization/modules/persistent_terminal/start.py
JOJO f661dc6456 refactor(server,modules,utils,frontend): split oversized modules into packages and fix regressions
- Split server/chat.py, server/status.py, server/tasks.py into sub-packages
- Split utils/context_manager.py, utils/conversation_manager.py into mixin packages
- Split modules/file_manager.py, persistent_terminal.py, terminal_ops.py, mcp_client_manager.py into packages
- Split core/main_terminal_parts/context.py into base + mixins
- Split static/src/app/methods/{ui,message,upload,taskPolling,conversation} into sub-modules
- Fix flattened method exports, dynamic import paths, missing cross-module imports
- Add missing permission/network/execution mode constants and _PERMISSION_MODE_LABEL
- Update AGENTS.md, CLAUDE.md and project memories to reflect new structure
2026-06-20 15:54:48 +08:00

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# modules/persistent_terminal.py - 持久化终端实例(修复版)
import asyncio
import subprocess
import os
import sys
import time
import signal
from pathlib import Path
from typing import Optional, Callable, Dict, List, Tuple
from datetime import datetime
import threading
import queue
from collections import deque
import shutil
import uuid
import codecs
from modules.host_sandbox_runner import (
HostSandboxError,
build_host_sandbox_shell_plan,
host_sandbox_enabled,
)
try:
from config import (
OUTPUT_FORMATS,
TERMINAL_OUTPUT_WAIT,
TERMINAL_INPUT_MAX_CHARS,
TERMINAL_SANDBOX_MODE,
TERMINAL_SANDBOX_IMAGE,
TERMINAL_SANDBOX_MOUNT_PATH,
TERMINAL_SANDBOX_SHELL,
TERMINAL_SANDBOX_NETWORK,
TERMINAL_SANDBOX_CPUS,
TERMINAL_SANDBOX_MEMORY,
TERMINAL_SANDBOX_BINDS,
TERMINAL_SANDBOX_BIN,
TERMINAL_SANDBOX_NAME_PREFIX,
TERMINAL_SANDBOX_ENV,
TERMINAL_SANDBOX_REQUIRE,
)
except ImportError:
import sys
from pathlib import Path
project_root = Path(__file__).resolve().parents[1]
if str(project_root) not in sys.path:
sys.path.insert(0, str(project_root))
from config import (
OUTPUT_FORMATS,
TERMINAL_OUTPUT_WAIT,
TERMINAL_INPUT_MAX_CHARS,
TERMINAL_SANDBOX_MODE,
TERMINAL_SANDBOX_IMAGE,
TERMINAL_SANDBOX_MOUNT_PATH,
TERMINAL_SANDBOX_SHELL,
TERMINAL_SANDBOX_NETWORK,
TERMINAL_SANDBOX_CPUS,
TERMINAL_SANDBOX_MEMORY,
TERMINAL_SANDBOX_BINDS,
TERMINAL_SANDBOX_BIN,
TERMINAL_SANDBOX_NAME_PREFIX,
TERMINAL_SANDBOX_ENV,
TERMINAL_SANDBOX_REQUIRE,
)
class StartMixin:
"""PersistentTerminal start 能力 mixin。"""
def start(self) -> bool:
"""启动终端进程(支持容器沙箱)"""
if self.is_running:
return False
try:
process = None
selected_mode = self.sandbox_mode
if selected_mode == "docker":
try:
process = self._start_docker_terminal()
except Exception as exc:
message = f"容器终端启动失败: {exc}"
print(f"{OUTPUT_FORMATS['error']} {message}")
return False
if process is None:
process = self._start_host_terminal()
selected_mode = "host"
if not process:
return False
self.process = process
self.is_running = True
self.execution_mode = "docker" if self.using_container else "host"
self.start_time = datetime.now()
self.last_output_time = None
self.last_input_time = None
self.last_input_text = ""
self.echo_loop_detected = False
self._consecutive_echo_matches = 0
# 启动输出读取线程
self.is_reading = True
self.reader_thread = threading.Thread(target=self._read_output)
self.reader_thread.daemon = True
self.reader_thread.start()
# 宿主机Windows初始化
if self.is_windows and not self.using_container:
time.sleep(0.5)
self.send_command("chcp 65001", timeout=1)
time.sleep(0.5)
self.send_command("cls", timeout=1)
time.sleep(0.3)
self.output_buffer.clear()
self.total_output_size = 0
# 广播终端启动事件
if self.broadcast:
self.broadcast('terminal_started', {
'session': self.session_name,
'working_dir': str(self.working_dir),
'shell': self.shell_command,
'mode': self.execution_mode,
'time': self.start_time.isoformat()
})
mode_label = "容器" if self.using_container else "宿主机"
print(f"{OUTPUT_FORMATS['success']} 终端会话启动({mode_label}): {self.session_name}")
return True
except Exception as e:
print(f"{OUTPUT_FORMATS['error']} 终端启动失败: {e}")
self.is_running = False
if self.using_container:
self._stop_sandbox_container(force=True)
return False
def _start_host_terminal(self):
"""启动宿主机终端"""
if self.allow_direct_host_execution:
return self._start_plain_host_terminal()
if not host_sandbox_enabled():
raise RuntimeError("宿主机沙箱已禁用HOST_SANDBOX_ENABLED=0拒绝启动 host 终端。")
self.using_container = False
self._owns_container = False
self.is_windows = sys.platform == "win32"
env = os.environ.copy()
env['PYTHONIOENCODING'] = 'utf-8'
env['TERM'] = 'xterm-256color'
env['LANG'] = 'en_US.UTF-8'
env['LC_ALL'] = 'en_US.UTF-8'
try:
network_permission = os.environ.get("HOST_SANDBOX_NETWORK_PERMISSION", "restricted")
plan = build_host_sandbox_shell_plan(
self.working_dir, env, network_permission=network_permission
)
cmd_args = plan.command
pass_fds = ()
seccomp_fd = None
if plan.seccomp_bpf_path:
seccomp_fd = os.open(plan.seccomp_bpf_path, os.O_RDONLY)
cmd_args = [str(seccomp_fd) if token == "__SECCOMP_FD__" else token for token in cmd_args]
pass_fds = (seccomp_fd,)
try:
process = subprocess.Popen(
cmd_args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
cwd=plan.cwd or str(self.working_dir),
shell=False,
bufsize=0,
env=plan.env,
pass_fds=pass_fds
)
finally:
if seccomp_fd is not None:
try:
os.close(seccomp_fd)
except OSError:
pass
self.shell_command = "host-sandbox-shell"
self.is_windows = False
return process
except HostSandboxError as exc:
raise RuntimeError(str(exc))
except FileNotFoundError:
print(f"{OUTPUT_FORMATS['error']} 无法找到宿主机沙箱终端运行时")
return None
def _start_plain_host_terminal(self):
self.using_container = False
self._owns_container = False
self.is_windows = sys.platform == "win32"
shell_cmd = self.host_shell_command
if self.is_windows:
shell_cmd = shell_cmd or "cmd.exe"
else:
shell_cmd = shell_cmd or os.environ.get('SHELL', '/bin/bash')
self.shell_command = shell_cmd
env = os.environ.copy()
env['PYTHONIOENCODING'] = 'utf-8'
env['TERM'] = 'xterm-256color'
env['LANG'] = 'en_US.UTF-8'
env['LC_ALL'] = 'en_US.UTF-8'
process = subprocess.Popen(
shell_cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
cwd=str(self.working_dir),
shell=False,
bufsize=0,
env=env
)
return process
def _start_docker_terminal(self):
"""启动或连接容器化终端。"""
docker_bin = self.sandbox_options.get("bin") or "docker"
docker_path = shutil.which(docker_bin)
if not docker_path:
message = f"未找到容器运行时: {docker_bin}"
if self.sandbox_required:
raise RuntimeError(message)
print(f"{OUTPUT_FORMATS['warning']} {message}")
return None
self._sandbox_bin_path = docker_path
target_container = self.sandbox_options.get("container_name")
if target_container:
return self._start_existing_container_terminal(docker_path, target_container)
return self._start_new_container_terminal(docker_path)
def _start_existing_container_terminal(self, docker_path: str, container_name: str):
"""通过 docker exec 连接到已有容器。"""
if not self._ensure_container_alive(docker_path, container_name):
raise RuntimeError(f"目标容器未运行: {container_name}")
mount_path = self.sandbox_options.get("mount_path") or "/workspace"
container_workdir = self._resolve_container_workdir(mount_path)
shell_path = self.sandbox_options.get("shell") or "/bin/bash"
cmd = [
docker_path,
"exec",
"-i",
]
if container_workdir:
cmd += ["-w", container_workdir]
envs = {
"PYTHONIOENCODING": "utf-8",
"TERM": "xterm-256color",
}
for key, value in (self.sandbox_options.get("env") or {}).items():
if value is not None:
envs[key] = value
for key, value in envs.items():
cmd += ["-e", f"{key}={value}"]
cmd.append(container_name)
cmd.append(shell_path)
if shell_path.endswith("sh"):
cmd.append("-i")
env = os.environ.copy()
process = subprocess.Popen(
cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=0,
env=env
)
self.sandbox_container_name = container_name
self.shell_command = f"{shell_path} (attach:{container_name})"
self.using_container = True
self.is_windows = False
self._owns_container = False
return process
def _start_new_container_terminal(self, docker_path: str):
"""启动全新的容器终端。"""
image = self.sandbox_options.get("image")
if not image:
raise RuntimeError("TERMINAL_SANDBOX_IMAGE 未配置")
mount_path = self.sandbox_options.get("mount_path") or "/workspace"
working_dir = str(self.working_dir)
if not self.working_dir.exists():
self.working_dir.mkdir(parents=True, exist_ok=True)
container_name = f"{self.sandbox_options.get('name_prefix', 'agent-term')}-{uuid.uuid4().hex[:10]}"
cmd = [
docker_path,
"run",
"--rm",
"-i",
]
cmd += [
"--name",
container_name,
"-w",
mount_path,
"-v",
f"{working_dir}:{mount_path}",
]
network = self.sandbox_options.get("network")
if network:
cmd += ["--network", network]
cpus = self.sandbox_options.get("cpus")
if cpus:
cmd += ["--cpus", cpus]
memory = self.sandbox_options.get("memory")
if memory:
cmd += ["--memory", memory]
for bind in self.sandbox_options.get("binds", []):
bind = bind.strip()
if bind:
cmd += ["-v", bind]
envs = {
"PYTHONIOENCODING": "utf-8",
"TERM": "xterm-256color",
}
for key, value in (self.sandbox_options.get("env") or {}).items():
if value is not None:
envs[key] = value
for key, value in envs.items():
cmd += ["-e", f"{key}={value}"]
cmd.append(image)
shell_path = self.sandbox_options.get("shell") or "/bin/bash"
if shell_path:
cmd.append(shell_path)
if shell_path.endswith("sh"):
cmd.append("-i")
env = os.environ.copy()
try:
process = subprocess.Popen(
cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=0,
env=env
)
except FileNotFoundError:
message = f"无法执行容器运行时: {docker_path}"
if self.sandbox_required:
raise RuntimeError(message)
print(f"{OUTPUT_FORMATS['warning']} {message}")
return None
self.sandbox_container_name = container_name
self.shell_command = f"{shell_path} (sandbox:{image})"
self.using_container = True
self.is_windows = False
self._owns_container = True
return process
def _resolve_container_workdir(self, mount_path: str) -> str:
"""推导容器内工作目录路径。"""
mount_path = (mount_path or "/workspace").rstrip("/") or "/workspace"
try:
relative = self.working_dir.relative_to(self.project_path)
if str(relative) == ".":
return mount_path
return f"{mount_path}/{relative.as_posix()}"
except Exception:
return mount_path
def _ensure_container_alive(self, docker_path: str, container_name: str) -> bool:
"""确认目标容器正在运行。"""
try:
result = subprocess.run(
[
docker_path,
"inspect",
"-f",
"{{.State.Running}}",
container_name,
],
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL,
text=True,
timeout=3,
check=False,
)
except (OSError, subprocess.SubprocessError):
return False
return result.returncode == 0 and result.stdout.strip().lower() == "true"