Change to Peewee

db_modell.py

@@ -0,0 +1,38 @@
+import peewee
+
+
+db = peewee.Proxy()
+
+
+class BaseModel(peewee.Model):
+    class Meta:
+        database = db
+
+
+class PiWatch(BaseModel):
+    ts = peewee.DateTimeField(primary_key=True)
+    name = peewee.TextField()
+    cpu_percent = peewee.FloatField()
+    cpufreq_current = peewee.FloatField()
+    cpu_temp = peewee.FloatField()
+    cpu_spannung = peewee.FloatField()
+    vmemory_total = peewee.FloatField()
+    vmemory_available = peewee.FloatField()
+    vmemory_percent = peewee.FloatField()
+    vmemory_used = peewee.FloatField()
+    vmemory_free = peewee.FloatField()
+    swapmemory_total = peewee.FloatField()
+    swapmemory_used = peewee.FloatField()
+    swapmemory_free = peewee.FloatField()
+    swapmemory_percent = peewee.FloatField()
+    disk_total = peewee.FloatField()
+    disk_used = peewee.FloatField()
+    disk_free = peewee.FloatField()
+    disk_percent = peewee.FloatField()
+
+    class Meta:
+        table_name = "pi_watch"
+
+
+def create_table():
+    db.create_tables([PiWatch])

pi_watch.py

@@ -1,19 +1,18 @@
-#!/usr/bin/python3
+import datetime
+import os
+import subprocess
+import time
 
-# # # # # # # # # #
-#Imports
-# # # # # # # # # #
 import psutil
-import subprocess
 import toml
-import os
-import time
 from sshtunnel import SSHTunnelForwarder
-import sqlalchemy
+
+from db_modell import db, PiWatch, create_table
+from peewee import PostgresqlDatabase
 
 
 def load_config():
-    configfile = os.path.join(PFAD, "conf.toml")
+    configfile = os.path.join(SKRIPTPFAD, "conf.toml")
     with open(configfile) as conffile:
         config = toml.loads(conffile.read())
     config["ssh"] = {}
@@ -22,47 +21,14 @@ def load_config():
     return config
 
 
-# # # # # # # # # #
+SKRIPTPFAD = os.path.abspath(os.path.dirname(__file__))
-# Config
-# # # # # # # # # #
-PFAD = os.path.abspath(os.path.dirname(__file__))
 CONFIG = load_config()
+MESSINTERVALL = datetime.timedelta(seconds=CONFIG["messintervall"])
+SENDEINTERVALL = datetime.timedelta(seconds=CONFIG["sendeintervall"])
 
 
-class PGHandler:
+def system_daten_erfassen(now):
-    def __init__(self, port):
+    daten = {"ts": now, "name": "hofei", "cpu_percent": psutil.cpu_percent()}
-        self.pguser = CONFIG["pguser"]
-        self.pgpw = CONFIG["pgpw"]
-        self.port = port
-        self.db = CONFIG["DB"]
-        self.engine = sqlalchemy.create_engine('postgresql+psycopg2://{pguser}:{pgpw}@localhost:{port}/{db}'.format(
-            pguser=self.pguser, pgpw=self.pgpw, port=self.port, db=self.db))
-
-    def check_spalten(self, daten):
-        for key in daten.keys():
-            print(key)
-
-    def daten_schreiben(self, daten):
-        with self.engine.begin() as conn:
-            values = [CONFIG["name"]]
-            spalte_liste = ["name"]
-            values_var = ""
-            for spalte, wert in daten.items():
-                values.append(wert)
-                spalte_liste.append(spalte)
-            values_var = ', '.join(['%s'] * (len(spalte_liste)))
-            spalten = ", ".join(spalte_liste)
-            sql = "INSERT INTO pi_watch ({spalten}) VALUES ({values_var})".format(spalten=spalten,
-                                                                                  values_var=values_var)
-            data = values
-            conn.execute(sql, data)
-
-
-# # # # # # # # # #
-# Funktionen
-# # # # # # # # # #
-def system_daten_erfassen():
-    daten = {"cpu_percent": psutil.cpu_percent()}
     abfrage = psutil.cpu_freq()
     daten["cpufreq_current"] = abfrage.current
 
@@ -85,35 +51,40 @@ def system_daten_erfassen():
     daten["disk_free"] = abfrage.free
     daten["disk_percent"] = abfrage.percent
 
-    abfrage = psutil.net_io_counters(pernic=True)
-    for schnittstelle in CONFIG["netzwerk"]:
-        daten[schnittstelle + "_bytes_sent"] = abfrage[schnittstelle].bytes_sent
-        daten[schnittstelle + "_bytes_recv"] = abfrage[schnittstelle].bytes_recv
-        daten[schnittstelle + "_packets_sent"] = abfrage[schnittstelle].packets_sent
-        daten[schnittstelle + "_packets_recv"] = abfrage[schnittstelle].packets_recv
-        daten[schnittstelle + "_errin"] = abfrage[schnittstelle].errin
-        daten[schnittstelle + "_errout"] = abfrage[schnittstelle].errout
-        daten[schnittstelle + "_dropin"] = abfrage[schnittstelle].dropin
-        daten[schnittstelle + "_dropout"] = abfrage[schnittstelle].dropout                
-
     if CONFIG["pi"]:
-        daten["cpu_temp"] = subprocess.Popen(["vcgencmd", "measure_temp"], stdout=subprocess.PIPE).stdout.read()
+        cpu_temp = subprocess.Popen(["vcgencmd", "measure_temp"], stdout=subprocess.PIPE).stdout.read()
-        daten["cpu_temp"] = daten["cpu_temp"].decode("utf-8").strip("temp='C\n")
+        daten["cpu_temp"] = cpu_temp.decode("utf-8").strip("temp='C\n")
-        daten["cpu_spannung"] = subprocess.Popen(["vcgencmd", "measure_volts"], stdout=subprocess.PIPE).stdout.read()
+        cpu_spannung = subprocess.Popen(["vcgencmd", "measure_volts"], stdout=subprocess.PIPE).stdout.read()
-        daten["cpu_spannung"] = daten["cpu_spannung"].decode("utf-8").strip("volt=V\n")
+        daten["cpu_spannung"] = cpu_spannung.decode("utf-8").strip("volt=V\n")
 
     return daten
 
 
 def main():
+    zwischenspeicher = []
+    letzte_messung = datetime.datetime.now() - MESSINTERVALL
+    letzter_upload = datetime.datetime.now() - SENDEINTERVALL
+    while True:
+        now = datetime.datetime.now()
+
+        if (now - letzte_messung) > MESSINTERVALL:
+            daten = system_daten_erfassen(now)
+            zwischenspeicher.append(daten)
+            letzte_messung = now
+
+        if (now - letzter_upload) > SENDEINTERVALL:
             with SSHTunnelForwarder(
                 (CONFIG["ssh"]["ip_server"], CONFIG["ssh"]["ssh_port"]), ssh_username=CONFIG["ssh"]["user"],
                     ssh_password=CONFIG["ssh"]["pw"], remote_bind_address=('127.0.0.1', CONFIG["pgport"])) as server:
-        pg_handler = PGHandler(server.local_bind_port)
+                db.initialize(PostgresqlDatabase(CONFIG["db"],
-        while True:
+                                                 user=CONFIG["pguser"], password=CONFIG["pgpw"],
-            daten = system_daten_erfassen()
+                                                 host="127.0.0.1",
-            pg_handler.daten_schreiben(daten)
+                                                 port=server.local_bind_port))
-            time.sleep(CONFIG["intervall"])
+                create_table()
+                PiWatch.insert_many(zwischenspeicher).execute()
+                zwischenspeicher = []
+                letzter_upload = now
+        time.sleep(1)
 
 
 if __name__ == "__main__":