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DCU_DesktopController/scripts/guard_probe.py
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"""tx 冻结守卫真机验证的共用底座:一条通路 + 一份前置判据。
为什么要有这个文件:两个真机脚本(check_guard_idle_silence.py / check_guard_fires_hw.py)
必须用**同一份**前置条件。前置没满足就跑,等于什么都没测——比如 loop=0 或 pm_hold=1
时判据按设计是静音的,这种"跑绿了其实没测"正是本次加固要根除的缺陷类别,所以
判据只放一个执行点,两个脚本都从这里取。
通路优先级:先试页面代理 :2625/ecat/api/*(用户点发送走的就是这条,代理自己那套
"不给 connect 设 timeout"的约束在 esp32_server/ecat_client 里),失败再直连 native
8090..8095(APP 没起时也能跑门槛)。
"""
import json
import os
import sys
import time
import urllib.error
import urllib.request
PAGE_BASE = os.environ.get("DCU_PAGE_BASE", "http://127.0.0.1:2625")
NATIVE_PORTS = list(range(8090, 8096))
GUARD_KEYS = ("alive_ticks", "armed", "tx_stale_s", "since_send_s", "since_full_s",
"cooldown_left_s", "tx_count", "tx_base", "motor_send_hits", "fires",
"last_fire_age_s")
# 注:这里的 timeout 只作用于门槛工具自己的请求。esp32_server 的 ECAT 代理严禁设
# socket timeout(Windows 上会让 connect 走 select 轮询,每请求白加约 10ms),
# 那是另一条路径,见 ecat_client.py 的同名注释。
TIMEOUT = float(os.environ.get("DCU_GUARD_TIMEOUT", "30"))
class Blocked(Exception):
"""前置不满足:调用方必须以退出码 2 结束,绝不折算成 PASS。"""
def _post(url, obj):
data = json.dumps(obj).encode("utf-8") if obj is not None else b"{}"
req = urllib.request.Request(url, data=data, method="POST",
headers={"Content-Type": "application/json"})
with urllib.request.urlopen(req, timeout=TIMEOUT) as r:
return json.loads(r.read().decode("utf-8", "replace"))
class Link:
def __init__(self, base, how):
self.base = base
self.how = how
def api(self, path, obj=None):
return _post(self.base + path, obj if obj is not None else {})
def health(self):
return self.api("/api/native/health")
def state(self):
return self.api("/api/motor/state")
def send(self, ch=2, ident=0x00030200, dlc=32, payload=None):
body = {"frames": [{"ch": ch, "id": ident, "dlc": dlc,
"data": payload or "03" * dlc}]}
t0 = time.perf_counter()
r = self.api("/api/motor/send", body)
return r, (time.perf_counter() - t0) * 1000.0
def open_link(verbose=True):
last = None
for url in [PAGE_BASE + "/ecat/api"]:
try:
lk = Link(url, "页面代理")
h = lk.health()
if not h.get("ok"):
raise ValueError("health.ok 非真")
if verbose:
print("通路:%s(%s)" % (url, lk.how))
return lk
except Exception as e:
last = e
for p in NATIVE_PORTS:
try:
lk = Link("http://127.0.0.1:%d" % p, "直连 native")
h = lk.health()
if h.get("ok"):
if verbose:
print("通路:http://127.0.0.1:%d(%s;页面代理不可用:%s)" % (p, lk.how, last))
return lk
except Exception as e:
last = e
raise Blocked("native 连不上(试过 %s 与 %s):%s"
% (PAGE_BASE + "/ecat/api", NATIVE_PORTS, last))
def guard_of(health):
g = health.get("guard")
if not isinstance(g, dict):
raise Blocked("health 里没有 guard 块 ⇒ 跑的是旧 exe(不含可观测面),"
"先跑 tools/ecat/build_native.bat 换二进制")
missing = [k for k in GUARD_KEYS if k not in g]
if missing:
raise Blocked("guard 缺字段 %s ⇒ 二进制与脚本不同代" % missing)
return g
def preflight(lk, want_tx_alive=True):
"""总线必须真的在交换数据、且守卫没被静音,否则跑了也测不到东西。"""
h = lk.health()
g = guard_of(h)
need = {"bus_open": 1, "op": 1, "loop": 1}
bad = ["%s=%s(需 1)" % (k, h.get(k)) for k, v in need.items() if h.get(k) != v]
if h.get("dc") != 1 or h.get("dc_cycle_us") != 250:
bad.append("dc=%s/%sus(需 1/250)" % (h.get("dc"), h.get("dc_cycle_us")))
if (h.get("wkc") or 0) < 3:
bad.append("wkc=%s(需 >=3)" % h.get("wkc"))
if h.get("pm_hold"):
bad.append("pm_hold=1(休眠豁免期判据按设计静音,测不到)")
if h.get("recovering"):
bad.append("recovering=1(正在重拉,此刻的绿灯不算数)")
t0 = g["alive_ticks"]
time.sleep(1.0)
g1 = guard_of(lk.health())
if g1["alive_ticks"] - t0 < 3:
bad.append("guard.alive_ticks +%d/1s(需 >=3)⇒ 巡检线程没在跑"
% (g1["alive_ticks"] - t0))
if bad:
raise Blocked(";".join(bad))
if want_tx_alive:
s = lk.state()
tx = ((s.get("bridge") or {}).get("tx_count"), (s.get("head") or {}).get("global_seq"))
print("前置 OK:bus/op/loop=1 dc=250us wkc=%s ticks=+%d/1s 当前 tx_count=%s gseq=%s"
% (h.get("wkc"), g1["alive_ticks"] - t0, tx[0], tx[1]))
else:
print("前置 OK(未要求出口活动)")
return h, g1
def bridge_of(state):
return state.get("bridge") or {}
def verdict(ok, why=""):
"""末行恒为 VERDICT,包装脚本 grep 它;退出码 0/1/2 是真门槛。"""
if ok:
print("VERDICT PASS")
return 0
print("VERDICT FAIL " + why)
return 1
def ask(prompt, timeout_s=600):
"""物理动作确认:必须等到人做完才继续,绝不自动放行。
终端里就是回车;被自动化/远程跑时 stdin 不是终端,改为等一个 ack 文件
(脚本先删掉它,出现即视为确认并再次删除)。两种路径都是人驱动的,只是
不靠 tty —— 换成"超时自动继续"就失去意义了,所以超时按 BLOCKED 收。
"""
import tempfile
# 显式指定了 ack 文件 = 明确要"文件握手",绝不先碰 stdin:后台任务的 stdin 未必
# 给 EOF,一旦落在 input() 上就是无限期吊着(实测踩过)。
ack = os.environ.get("DCU_GUARD_ACK_FILE")
if not ack:
if sys.stdin and hasattr(sys.stdin, "isatty") and sys.stdin.isatty():
try:
raw = input(prompt + "(回车继续 / 输入 s 放弃本测试): ").strip().lower()
if raw == "s":
raise Blocked("用户放弃")
return
except EOFError:
pass # isatty 为真但无输入 → 落到 ack 文件
ack = os.path.join(tempfile.gettempdir(), "dcu_guard_ack")
try:
os.remove(ack)
except FileNotFoundError:
pass
print(" ⏸ 需要人工:%s" % prompt)
print(" 做完后创建这个文件即可继续:%s" % ack)
print(" 等待上限 %ds,期间脚本不做任何总线动作" % timeout_s)
t0 = time.time()
while time.time() - t0 < timeout_s:
if os.path.exists(ack):
try:
os.remove(ack)
except OSError:
pass
print(" 收到确认(%.0fs)" % (time.time() - t0))
return
time.sleep(0.5)
raise Blocked("等待人工确认超时 %ds:%s" % (timeout_s, prompt))
__all__ = ["Link", "Blocked", "open_link", "guard_of", "preflight", "bridge_of",
"verdict", "ask", "GUARD_KEYS", "PAGE_BASE"]
if __name__ == "__main__":
try:
lk = open_link()
preflight(lk)
except Blocked as e:
print("BLOCKED %s" % e)
sys.exit(2)
sys.exit(0)