feat: monitor ethernet link speed

app/pigway_pi_control_api.py

@@ -10,7 +10,7 @@ from pathlib import Path
 from urllib.parse import parse_qs,urlencode,urlparse
 from urllib.request import Request,urlopen
 
-APP_VERSION="3.7.1"
+APP_VERSION="3.7.2"
 CFG=Path("/etc/pigway-pi-control.conf")
 STATUS=Path("/run/pigway-pi-control/status.json")
 TOKEN=Path("/etc/pigway-pi-control-api.token")
@@ -114,7 +114,9 @@ def validate_value(section,key,value,existing):
 
 
 def replace_ini_value(section,key,value):
-    text=CFG.read_text()
+    return replace_ini_text(CFG.read_text(),section,key,value)
+
+def replace_ini_text(text,section,key,value):
     section_match=re.search(rf"(?mi)^\[{re.escape(section)}\][ \t]*$",text)
     if not section_match:
         if value is not None: text=text.rstrip()+f"\n\n[{section}]\n{key} = {value}\n"
@@ -278,6 +280,34 @@ def edit_service_monitor(operation,name,target,note="",previous_name=""):
     subprocess.run(["systemctl","restart","pigway-pi-control.service"],check=True,timeout=10)
     return str(backup)
 
+def process_monitors():
+    cfg=load_cfg(); result=[]
+    for name,target in cfg.items("processes"):
+        target=target.strip()
+        if not target: continue
+        up=subprocess.run(["pgrep","-f","--",target],stdout=subprocess.DEVNULL,
+                          stderr=subprocess.DEVNULL,timeout=2).returncode==0
+        result.append({"name":name.upper(),"target":target,"up":up})
+    return result
+
+def edit_process_monitor(operation,name,target="",previous_name=""):
+    if operation not in {"save","delete"}: raise ValueError("invalid process monitor operation")
+    if not NAME_RE.fullmatch(name): raise ValueError("invalid process monitor name")
+    if previous_name and not NAME_RE.fullmatch(previous_name): raise ValueError("invalid previous process monitor name")
+    if operation=="save" and (not target or len(target)>256 or any(c in target for c in "\r\n\x00")):
+        raise ValueError("invalid process match expression")
+    text=CFG.read_text()
+    if operation=="delete":
+        if not load_cfg().has_option("processes",name): raise ValueError("process monitor not found")
+        text=replace_ini_text(text,"processes",name,None)
+    else:
+        if previous_name and previous_name.lower()!=name.lower(): text=replace_ini_text(text,"processes",previous_name,None)
+        text=replace_ini_text(text,"processes",name,target)
+    parsed=configparser.ConfigParser(); parsed.read_string(text)
+    backup=save_ini_text(text,"api")
+    subprocess.run(["systemctl","restart","pigway-pi-control.service"],check=True,timeout=10)
+    return backup
+
 def control_service(unit,action):
     if not UNIT_RE.fullmatch(unit): raise ValueError("invalid systemd service name")
     if action not in {"start","stop"}: raise ValueError("action must be start or stop")
@@ -350,13 +380,15 @@ class Handler(BaseHTTPRequestHandler):
             if parsed.path=="/api/v1/services":
                 query=parse_qs(parsed.query); host_id=query.get("host",[""])[0]
                 self.send_json(200,{"services":service_inventory(),"machine":machine_identity()}); return
+            if parsed.path=="/api/v1/processes":
+                self.send_json(200,{"processes":process_monitors(),"machine":machine_identity()}); return
             self.send_json(404,{"error":"not found"})
         except ValueError as e: self.send_json(400,{"error":str(e)})
         except Exception as e: self.send_json(500,{"error":str(e)})
 
     def do_PUT(self):
         path=urlparse(self.path).path
-        if path not in {"/api/v1/plugins","/api/v1/plugin/config","/api/v1/config","/api/v1/services","/api/v1/services/control"}: self.send_json(404,{"error":"not found"}); return
+        if path not in {"/api/v1/plugins","/api/v1/plugin/config","/api/v1/config","/api/v1/services","/api/v1/services/control","/api/v1/processes"}: self.send_json(404,{"error":"not found"}); return
         if not self.authorized(): self.send_json(401,{"error":"bearer token required"}); return
         try:
             body=self.read_json()
@@ -375,6 +407,11 @@ class Handler(BaseHTTPRequestHandler):
                                             str(body.get("previous_name","")))
                 print(f"SERVICE_MONITOR_UPDATED operation={body.get('operation')} target={body.get('target')} backup={backup}",flush=True)
                 self.send_json(200,{"ok":True,"backup":backup}); return
+            if path=="/api/v1/processes":
+                backup=edit_process_monitor(str(body.get("operation","")),str(body.get("name","")),
+                                            str(body.get("target","")),str(body.get("previous_name","")))
+                print(f"PROCESS_MONITOR_UPDATED operation={body.get('operation')} target={body.get('target')} backup={backup}",flush=True)
+                self.send_json(200,{"ok":True,"backup":backup}); return
             updates=body.get("updates")
             backup=update_ini(updates)
             subprocess.run(["systemctl","restart","pigway-pi-control.service"],check=True,timeout=10)