Files

498 lines
23 KiB
Python
Executable File

#!/usr/bin/env python3
import time,socket,subprocess,configparser,signal,re,argparse,json,os,platform
from pathlib import Path
APP_VERSION="3.7.0"
import sys
sys.path.append("/usr/local/share/pigway-pi-control")
from shutil import disk_usage
from plugin_api import Publisher,registered,discover
CFG="/etc/pigway-pi-control.conf"
STATUS_PATH="/run/pigway-pi-control/status.json"
running=True
def stop(*_):
global running; running=False
signal.signal(signal.SIGTERM,stop); signal.signal(signal.SIGINT,stop)
def log(level,event,**fields):
parts=[f"level={level}",f"event={event}"]
for k,v in fields.items(): parts.append(f"{k}={str(v).replace(chr(32),'_')}")
print(" ".join(parts),flush=True)
def uptime_seconds():
try:return int(float(Path("/proc/uptime").read_text().split()[0]))
except Exception:return 0
def load_average():
try:
x=Path("/proc/loadavg").read_text().split();return (float(x[0]),float(x[1]),float(x[2]))
except Exception:return (0.0,0.0,0.0)
def memory_usage():
try:
values={}
for line in Path("/proc/meminfo").read_text().splitlines():
key,value=line.split(":",1); values[key]=int(value.split()[0])*1024
total=values["MemTotal"]; available=values.get("MemAvailable",values.get("MemFree",0))
used=max(0,total-available)
return total,used,available,(used*100.0/total if total else 0.0)
except Exception:return 0,0,0,0.0
def wifi_percent(metric):
try:return max(0,min(100,round((float(metric)+100.0)*2.0)))
except Exception:return None
def device_details():
info={}
try:
for line in Path("/proc/cpuinfo").read_text().splitlines():
if ":" in line:
key,value=(x.strip() for x in line.split(":",1))
if key in ("Serial","Revision","Hardware","Model"): info[key.lower()]=value
except Exception: pass
try: info["model"]=Path("/proc/device-tree/model").read_bytes().rstrip(b"\0").decode()
except Exception: pass
# Device tree identifies ARM boards; DMI covers PCs and many other vendors.
for key,files in {
"manufacturer":["/sys/class/dmi/id/sys_vendor"],
"model":["/sys/firmware/devicetree/base/model","/sys/class/dmi/id/product_name"],
"revision":["/sys/class/dmi/id/product_version","/sys/class/dmi/id/board_version"],
"serial":["/sys/class/dmi/id/product_serial"],
}.items():
if info.get(key):continue
for filename in files:
try:value=Path(filename).read_text().strip().strip("\0")
except (OSError,UnicodeError):continue
if value and value.lower() not in ("none","unknown","default string","to be filled by o.e.m."):
info[key]=value;break
if not info.get("manufacturer"):
try:info["manufacturer"]=Path("/sys/firmware/devicetree/base/compatible").read_bytes().split(b"\0")[0].decode().split(',')[0]
except (OSError,UnicodeError):pass
try:
os_release={}
for line in Path("/etc/os-release").read_text().splitlines():
if "=" in line:
key,value=line.split("=",1); os_release[key]=value.strip().strip('"')
info["os"]=os_release.get("PRETTY_NAME",platform.platform())
except Exception: info["os"]=platform.platform()
info.update({"hostname":socket.gethostname(),"kernel":platform.release(),
"architecture":platform.machine(),"cpu_count":os.cpu_count() or 0})
return info
def cpu_freq_mhz():
for q in ("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq","/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq"):
try:return int(Path(q).read_text().strip())/1000.0
except Exception:pass
return 0.0
def root_readonly():
try:
for line in Path("/proc/mounts").read_text().splitlines():
a=line.split()
if len(a)>=4 and a[1]=="/":return "ro" in a[3].split(",")
except Exception:pass
return False
def throttled_state():
raw=_run(["vcgencmd","get_throttled"])
m=re.search(r"0x([0-9a-fA-F]+)",raw);v=int(m.group(1),16) if m else 0
if not m: return {"raw":"UNKNOWN","error":"vcgencmd get_throttled unavailable or invalid"}
return {"raw":f"0x{v:x}","under_voltage_now":bool(v&1),"freq_capped_now":bool(v&2),"throttled_now":bool(v&4),"soft_temp_limit_now":bool(v&8),"under_voltage_occurred":bool(v&(1<<16)),"freq_capped_occurred":bool(v&(1<<17)),"throttled_occurred":bool(v&(1<<18)),"soft_temp_limit_occurred":bool(v&(1<<19))}
prev_cpu=None
page=0; page_since=time.monotonic()
cpu_hi=mem_hi=0
net_ok=link_ok=True
net_iface=""; net_kind="NET"; net_metric="DOWN"; ip_label="IP4"; ip="NO IP"
wifi_weak_since=None; wifi_weak_active=False
last_net=last_watch=0
watch_state=[]
def set_pi_led(name,off=True):
base=Path("/sys/class/leds")/name
try:
if off:
(base/"trigger").write_text("none")
(base/"brightness").write_text("0")
except Exception as e:
print(f"board LED {name}: {e}",flush=True)
def apply_dark_mode():
if DARK_PWR: set_pi_led("PWR",True)
if DARK_ACT: set_pi_led("ACT",True)
def cpu_pct():
global prev_cpu
p=list(map(int,Path("/proc/stat").read_text().splitlines()[0].split()[1:9]))
idle=p[3]+p[4]; total=sum(p)
if prev_cpu is None: prev_cpu=(idle,total); return 0.0
di=idle-prev_cpu[0]; dt=total-prev_cpu[1]; prev_cpu=(idle,total)
return 100.0*(dt-di)/dt if dt else 0.0
def temp_c(): return int(Path("/sys/class/thermal/thermal_zone0/temp").read_text())/1000.0
def mem_pct():
vals={}
for l in Path("/proc/meminfo").read_text().splitlines():
if ":" in l:
k,v=l.split(":",1); vals[k]=int(v.split()[0])
return 100*(vals["MemTotal"]-vals["MemAvailable"])/vals["MemTotal"]
def disk_pct():
d=disk_usage("/"); return 100*d.used/d.total
def _run(args,timeout=2):
try: return subprocess.check_output(args,text=True,stderr=subprocess.DEVNULL,timeout=timeout).strip()
except Exception: return ""
def primary_network():
out=_run(["ip","-4","route","get","1.1.1.1"])
dev=re.search(r"\bdev\s+(\S+)",out); src=re.search(r"\bsrc\s+(\S+)",out); label="IP4"
if not dev:
out=_run(["ip","-6","route","get","2606:4700:4700::1111"])
dev=re.search(r"\bdev\s+(\S+)",out); src=re.search(r"\bsrc\s+(\S+)",out); label="IP6"
if not dev: return "","NET","DOWN","IP4","NO IP"
iface=dev.group(1); ipval=src.group(1) if src else ""
if Path(f"/sys/class/net/{iface}/wireless").exists():
kind="WIF"; metric="--"
try:
for line in Path("/proc/net/wireless").read_text().splitlines():
if line.lstrip().startswith(iface+":"):
metric=str(int(float(line.split()[3].rstrip(".")))); break
except Exception: pass
else:
kind="ETH"; metric="UP"
try:
n=int(Path(f"/sys/class/net/{iface}/speed").read_text().strip())
metric=f"{n//1000}G" if n>=1000 and n%1000==0 else str(n)
except Exception: pass
return iface,kind,metric,label,(ipval or "NO IP")
def get_ip():
return primary_network()[4]
def internet():
try:
s=socket.create_connection(("1.1.1.1",53),0.5);s.close();return True
except: return False
def load_cfg():
c=configparser.ConfigParser(); c.read(CFG)
watches=[]
if c.has_section("services"):
for label,target in c["services"].items():
target=target.strip()
paused=c.getboolean("service_monitor_disabled",label,fallback=False)
if target and not target.startswith("#") and not paused:
watches.append(("service",label.upper(),target))
if c.has_section("processes"):
for label,target in c["processes"].items():
target=target.strip()
if target and not target.startswith("#"): watches.append(("process",label.upper(),target))
return c,watches
cfg,watches=load_cfg()
def cf(section,key,default,cast=float):
try: return cast(cfg.get(section,key))
except: return default
DEVICE_ID=cf("device","identifier","auto",str).strip()
if not DEVICE_ID or DEVICE_ID.lower()=="auto": DEVICE_ID=socket.gethostname()
DEVICE_NAME=cf("device","name",DEVICE_ID,str).strip() or DEVICE_ID
if DEVICE_NAME.lower()=="auto": DEVICE_NAME=DEVICE_ID
DEVICE_INFO=device_details()
SENSOR_INTERVAL=cf("timing","sensor_interval",1.0)
NETWORK_INTERVAL=cf("timing","network_interval",5.0)
SERVICE_INTERVAL=cf("timing","service_interval",5.0)
HEALTH_INTERVAL=cf("timing","health_interval",1.0)
CPU_HIGH=cf("alerts","cpu_high",90.0)
CPU_RECOVER=cf("alerts","cpu_recover",75.0)
CPU_HIGH_SEC=cf("alerts","cpu_high_seconds",30,int)
MEM_HIGH=cf("alerts","memory_high",90.0)
MEM_RECOVER=cf("alerts","memory_recover",85.0)
MEM_HIGH_SEC=cf("alerts","memory_high_seconds",30,int)
TEMP_HIGH=cf("alerts","temp_high",68.0)
TEMP_CRIT=cf("alerts","temp_critical",75.0)
DISK_HIGH=cf("alerts","disk_high",90.0)
DISK_CRIT=cf("alerts","disk_critical",95.0)
WIFI_WEAK=cf("alerts","wifi_weak",-75.0)
WIFI_RECOVER=cf("alerts","wifi_recover",-68.0)
WIFI_WEAK_SECONDS=cf("alerts","wifi_weak_seconds",30.0)
DARK_PWR=cf("dark_mode","pi_pwr_led",True,lambda x: str(x).strip().lower() in ("off","0","false","no"))
DARK_ACT=cf("dark_mode","pi_act_led",True,lambda x: str(x).strip().lower() in ("off","0","false","no"))
ALERT_CATEGORIES={
"ROOT_READONLY":"STORAGE",
"TEMP_CRITICAL":"CPU","TEMP_HIGH":"CPU","SOFT_TEMP_LIMIT":"CPU",
"THROTTLED":"CPU","FREQ_CAPPED":"CPU","CPU_HIGH":"CPU",
"POWER_UNDERVOLT":"POWER",
"MEMORY_HIGH":"MEMORY",
"DISK_CRITICAL":"STORAGE","DISK_HIGH":"STORAGE",
"NETWORK_DOWN":"NETWORK","INTERNET_DOWN":"NETWORK","WIFI_WEAK":"NETWORK",
"SERVICE_DOWN":"SERVICE","PROCESS_DOWN":"SERVICE",
}
def check_watch(w):
typ,label,target=w
args=["systemctl","is-active","--quiet",target] if typ=="service" else ["pgrep","-f","--",target]
try:
r=subprocess.run(args,stdout=subprocess.DEVNULL,stderr=subprocess.DEVNULL,timeout=2)
return r.returncode==0
except (OSError,subprocess.TimeoutExpired):
return False
def diagnose():
print("Agent:")
print(f"version={APP_VERSION} uptime_seconds={uptime_seconds()} config={CFG}")
print(f"machine_id={DEVICE_ID} machine_name={DEVICE_NAME} hostname={socket.gethostname()}")
print("loop_errors=UNAVAILABLE scope=separate_diagnostic_process")
print("System:")
print(f"load_average={load_average()} cpu_freq_mhz={cpu_freq_mhz():.0f} root_readonly={root_readonly()}")
print("Power:")
power=throttled_state()
print("throttled="+power["raw"])
for key in ("under_voltage_now","freq_capped_now","throttled_now","soft_temp_limit_now",
"under_voltage_occurred","freq_capped_occurred","throttled_occurred","soft_temp_limit_occurred"):
print(f"{key}={power.get(key,'UNKNOWN')}")
if "error" in power: print("error="+power["error"])
iface,kind,metric,label,address=primary_network()
print("Network:")
print(f"primary_interface={iface or 'NONE'} kind={kind} metric={metric} signal_percent={wifi_percent(metric) if kind=='WIF' else 'N/A'} ip_label={label} IP={address} internet={internet()}")
print("Plugins (read-only API discovery; no hardware access):")
for plugin in discover(cfg):
print(f"plugin={plugin['id']} linked={plugin['linked']} online={plugin['online']}")
print("Watches:")
for w in watches:
print(f"watch {w[1]}={'UP' if check_watch(w) else 'DOWN'} type={w[0]} target={w[2]}")
return 0
ALERT_PRIORITIES={
"ROOT_READONLY":100,
"TEMP_CRITICAL":90,
"SOFT_TEMP_LIMIT":85,
"POWER_UNDERVOLT":80,
"THROTTLED":75,
"FREQ_CAPPED":70,
"NETWORK_DOWN":65,
"INTERNET_DOWN":65,
"SERVICE_DOWN":60,
"PROCESS_DOWN":60,
"DISK_CRITICAL":55,
"TEMP_HIGH":50,
"CPU_HIGH":45,
"MEMORY_HIGH":45,
"DISK_HIGH":40,
"WIFI_WEAK":30,
"NORMAL_HOME":0,
}
def alert_priority(request_id):
return ALERT_PRIORITIES[request_id.split("|",1)[0]]
def transition(key,active,on_event,off_event,**fields):
old=event_state.get(key,False)
if active!=old:
event_state[key]=active
log("WARN" if active else "INFO",on_event if active else off_event,**fields)
def update_active_alerts(cpu,temp,mem,disk,sample_elapsed=0.0):
global wifi_weak_since,wifi_weak_active
global cpu_hi,mem_hi
cpu_hi=cpu_hi+sample_elapsed if cpu>=CPU_HIGH else 0 if cpu<CPU_RECOVER else cpu_hi
mem_hi=mem_hi+sample_elapsed if mem>=MEM_HIGH else 0 if mem<MEM_RECOVER else mem_hi
if cpu_hi>=CPU_HIGH_SEC: alert_manager.request("CPU_HIGH",1,"CPU LOAD HIGH",f"LOAD {cpu:.1f}%",f"TEMP {temp:.1f}C","CHECK LOAD")
else: alert_manager.clear("CPU_HIGH")
if temp>=TEMP_CRIT:
alert_manager.request("TEMP_CRITICAL",3,"TEMP CRITICAL",f"TEMP {temp:.1f}C","CHECK COOLING","CHECK COOLING")
alert_manager.clear("TEMP_HIGH")
elif temp>=TEMP_HIGH:
alert_manager.request("TEMP_HIGH",1,"TEMP HIGH",f"TEMP {temp:.1f}C","CHECK COOLING","CHECK COOLING")
alert_manager.clear("TEMP_CRITICAL")
else:
alert_manager.clear("TEMP_HIGH"); alert_manager.clear("TEMP_CRITICAL")
if mem_hi>=MEM_HIGH_SEC: alert_manager.request("MEMORY_HIGH",1,"MEMORY HIGH",f"USED {mem:.1f}%","CHECK PROCESS","")
else: alert_manager.clear("MEMORY_HIGH")
if disk>=DISK_CRIT:
alert_manager.request("DISK_CRITICAL",2,"DISK CRITICAL",f"USED {disk:.1f}%","FREE < 5%","CHECK STORAGE")
alert_manager.clear("DISK_HIGH")
elif disk>=DISK_HIGH:
alert_manager.request("DISK_HIGH",1,"DISK SPACE LOW",f"USED {disk:.1f}%","FREE < 10%","CHECK STORAGE")
alert_manager.clear("DISK_CRITICAL")
else:
alert_manager.clear("DISK_HIGH"); alert_manager.clear("DISK_CRITICAL")
if not link_ok:
alert_manager.request("NETWORK_DOWN",2,"NETWORK DOWN","NO LAN / WIFI","NO IP ADDRESS","")
alert_manager.clear("INTERNET_DOWN")
elif not net_ok:
alert_manager.request("INTERNET_DOWN",2,"INTERNET DOWN","LOCAL LINK OK",ip,"")
alert_manager.clear("NETWORK_DOWN")
else:
alert_manager.clear("NETWORK_DOWN"); alert_manager.clear("INTERNET_DOWN")
for w,ok in zip(watches,watch_state):
alert_id=("SERVICE_DOWN" if w[0]=="service" else "PROCESS_DOWN")+"|"+w[1]
if not ok:
alert_manager.request(alert_id,2,"SERVICE DOWN" if w[0]=="service" else "PROCESS DOWN",w[1],"CHECK / RESTART","CRITICAL",{"target":w[2]})
else: alert_manager.clear(alert_id)
if net_kind=="WIF" and str(net_metric).lstrip("-").isdigit():
rssi=float(net_metric)
if not wifi_weak_active:
if rssi <= WIFI_WEAK:
if wifi_weak_since is None: wifi_weak_since=time.monotonic()
if time.monotonic()-wifi_weak_since >= WIFI_WEAK_SECONDS: wifi_weak_active=True
else: wifi_weak_since=None
elif rssi >= WIFI_RECOVER:
wifi_weak_active=False; wifi_weak_since=None
if wifi_weak_active:
alert_manager.request("WIFI_WEAK",1,"WIFI SIGNAL WEAK",f"RSSI {rssi:.0f} dBm",f"IF {net_iface}","CHECK SIGNAL")
else: alert_manager.clear("WIFI_WEAK")
else:
wifi_weak_since=None; wifi_weak_active=False; alert_manager.clear("WIFI_WEAK")
if health.get("under_voltage_now"):
alert_manager.request("POWER_UNDERVOLT",2,"POWER LOW","UNDERVOLTAGE","CHECK POWER","CRITICAL",{"raw":health.get("raw","")})
else: alert_manager.clear("POWER_UNDERVOLT")
if health.get("throttled_now"):
alert_manager.request("THROTTLED",2,"CPU THROTTLED",f"FREQ {cpu_freq_mhz():.0f}M",health.get("raw",""),"CHECK POWER")
else: alert_manager.clear("THROTTLED")
if health.get("freq_capped_now"):
alert_manager.request("FREQ_CAPPED",2,"FREQ CAPPED",f"FREQ {cpu_freq_mhz():.0f}M",health.get("raw",""),"CHECK POWER")
else: alert_manager.clear("FREQ_CAPPED")
if health.get("soft_temp_limit_now"):
alert_manager.request("SOFT_TEMP_LIMIT",2,"SOFT TEMP LIMIT","CPU TEMP LIMITED",health.get("raw",""),"CHECK COOLING")
else: alert_manager.clear("SOFT_TEMP_LIMIT")
if fs_readonly: alert_manager.request("ROOT_READONLY",3,"FILESYSTEM RO","ROOT READ ONLY","CHECK STORAGE","EMERGENCY")
else: alert_manager.clear("ROOT_READONLY")
class AlertManager:
"""Current monitoring facts. Hardware plugins own all display decisions."""
def __init__(self):
self.requests={}
def request(self,request_id,severity,title,l2="",l3="",l4="",metadata=None):
now=time.monotonic();old=self.requests.get(request_id)
value={"id":request_id,"priority":alert_priority(request_id),"severity":severity,
"category":ALERT_CATEGORIES[request_id.split("|",1)[0]].lower(),
"title":title[:21],"l2":l2[:21],"l3":l3[:21],"l4":l4[:21],
"first_seen":old["first_seen"] if old else now,"metadata":metadata or {}}
value["last_changed"]=old["last_changed"] if old and all(old[k]==v for k,v in value.items()) else now
self.requests[request_id]=value
if old is None:log("WARN","ALERT_ACTIVE",alert=request_id,severity=severity,detail=l2)
def clear(self,request_id):
if self.requests.pop(request_id,None) is not None:log("INFO","ALERT_RECOVERED",alert=request_id)
def status_snapshot(self):
values=sorted(self.requests.values(),key=lambda a:(-a["priority"],a["first_seen"],a["id"]))
return {"owner":values[0]["id"] if values else "NORMAL_HOME","alerts":values}
def cleanup():
publisher.close()
log("INFO","STOP",loop_errors=agent["loop_errors"])
try:Path(STATUS_PATH).unlink(missing_ok=True)
except Exception as e:log("ERROR","SHUTDOWN_CLEANUP",step="status_file",error=repr(e))
def write_status(cpu,temp,mem,disk):
display_state=alert_manager.status_snapshot()
memory_total,memory_used,memory_available,memory_calculated=memory_usage()
disk_total,disk_used,disk_free=disk_usage("/")
signal=wifi_percent(net_metric) if net_kind=="WIF" else None
state={
"version":APP_VERSION,"timestamp":int(time.time()),"uptime_seconds":uptime_seconds(),
"machine":{"id":DEVICE_ID,"name":DEVICE_NAME,"hostname":socket.gethostname()},
"device":DEVICE_INFO,
"system":{"load_average":load_average(),"cpu_percent":round(cpu,1),
"cpu_freq_mhz":round(cpu_freq_mhz()),"temperature_c":round(temp,1),
"memory_percent":round(memory_calculated if memory_total else mem,1),
"memory_total_bytes":memory_total,"memory_used_bytes":memory_used,
"memory_available_bytes":memory_available,
"disk_percent":round(disk,1),"disk_total_bytes":disk_total,
"disk_used_bytes":disk_used,"disk_free_bytes":disk_free,
"root_readonly":bool(fs_readonly)},
"power":health,
"network":{"interface":net_iface,"kind":net_kind,"metric":net_metric,
"signal_percent":signal,
"ip_label":ip_label,"ip":ip,"link":bool(link_ok),"internet":bool(net_ok)},
"watches":[{"type":w[0],"name":w[1],"target":w[2],"up":bool(ok)}
for w,ok in zip(watches,watch_state)],
"display":display_state,
"agent":{"loop_errors":agent["loop_errors"]},
"plugins":publisher.current_status(),
}
publisher.publish(state)
path=Path(STATUS_PATH); path.parent.mkdir(mode=0o755,parents=True,exist_ok=True)
temporary=path.with_suffix(".tmp")
temporary.write_text(json.dumps(state,ensure_ascii=False,separators=(",",":")))
temporary.chmod(0o644); temporary.replace(path)
# Dispatch only after all shared checks and configuration have been initialized.
parser=argparse.ArgumentParser()
parser.add_argument("--diagnose",action="store_true")
args=parser.parse_args()
if args.diagnose: raise SystemExit(diagnose())
watch_state=[]
last_sensor=last_status=0.0
last_net=last_watch=last_health=0.0
health={}; fs_readonly=False
agent={"last_sensor_ok":0.0,"last_network_ok":0.0,"last_watch_ok":0.0,"last_health_ok":0.0,"loop_errors":0}
event_state={}
history_logged=set()
latest=(0.0,0.0,0.0,0.0)
alert_manager=AlertManager()
publisher=Publisher({k:v for k,v in registered(cfg).items() if not cfg.getboolean("plugin_paused",k,fallback=False)},DEVICE_ID,log)
try:
apply_dark_mode()
log("INFO","START",version=APP_VERSION,uptime=uptime_seconds())
while running:
try:
now=time.monotonic()
sample_elapsed=0.0
# Independent clocks: update data/state only.
if now-last_sensor >= SENSOR_INTERVAL:
sample_elapsed=now-last_sensor if last_sensor else 0.0
c=cpu_pct(); t=temp_c(); m=mem_pct(); d=disk_pct()
latest=(c,t,m,d); last_sensor=now; agent["last_sensor_ok"]=now
if now-last_net >= NETWORK_INTERVAL:
old_id=(net_iface,ip)
net_iface,net_kind,net_metric,ip_label,ip=primary_network(); link_ok=ip!="NO IP"; net_ok=internet() if link_ok else False
new_id=(net_iface,ip)
if new_id!=old_id:
log("INFO","NET_SWITCH",old_if=old_id[0],old_ip=old_id[1],new_if=net_iface,new_ip=ip)
transition("network_down",not link_ok,"NETWORK_DOWN","NETWORK_RECOVERED",iface=net_iface,ip=ip)
transition("internet_down",link_ok and not net_ok,"INTERNET_DOWN","INTERNET_RECOVERED",iface=net_iface,ip=ip)
last_net=now; agent["last_network_ok"]=now
if now-last_watch >= SERVICE_INTERVAL:
watch_state=[check_watch(w) for w in watches]
for w,ok in zip(watches,watch_state):
transition("watch:"+w[0]+":"+w[1],not ok,"WATCH_DOWN","WATCH_RECOVERED",name=w[1],target=w[2])
last_watch=now; agent["last_watch_ok"]=now
if now-last_health >= HEALTH_INTERVAL:
power_sample=throttled_state(); fs_readonly=root_readonly()
transition("power_check", "error" in power_sample,"POWER_CHECK_ERROR","POWER_CHECK_RECOVERED")
# An unavailable reading is not evidence that an existing fault recovered.
if "error" not in power_sample: health=power_sample
transition("undervoltage",health.get("under_voltage_now",False),"POWER_LOW","POWER_RECOVERED",raw=health.get("raw"))
transition("throttled",health.get("throttled_now",False) or health.get("freq_capped_now",False),"THROTTLED","THROTTLE_RECOVERED",raw=health.get("raw"),freq_mhz=f"{cpu_freq_mhz():.0f}")
transition("soft_temp",health.get("soft_temp_limit_now",False),"SOFT_TEMP_LIMIT","SOFT_TEMP_RECOVERED",raw=health.get("raw"))
transition("root_ro",fs_readonly,"FILESYSTEM_RO","FILESYSTEM_RW")
for k in ("under_voltage_occurred","freq_capped_occurred","throttled_occurred","soft_temp_limit_occurred"):
if health.get(k) and k not in history_logged:
history_logged.add(k); log("WARN","HISTORY_FLAG",flag=k,raw=health.get("raw"))
agent["last_health_ok"]=now; last_health=now
c,t,m,d=latest
update_active_alerts(c,t,m,d,sample_elapsed)
if now-last_status >= 1.0:
write_status(c,t,m,d); last_status=now
time.sleep(0.20)
except Exception as e:
agent["loop_errors"]+=1; log("ERROR","LOOP_ERROR",count=agent["loop_errors"],error=repr(e)); time.sleep(1)
finally:
cleanup()