owm.py: check for w['rain']['3h']
[chrisu/seepark.git] / seewasser.py
index 42c96f4..922a990 100755 (executable)
 #! /usr/bin/python3
 
+import argparse
+import logging
 import datetime
 import re
 import sys
+import csv
+import os
+import configparser
+from sqlalchemy import create_engine
+import warnings
+import MySQLdb.cursors
 
-jetzt = datetime.datetime.now()
+logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)
 
-# print(jetzt)
+#May 27 21:32 /sys/bus/w1/devices/28-0416a1bab9ff
+#May 27 21:33 /sys/bus/w1/devices/28-0416a1ac66ff
+#May 27 21:35 /sys/bus/w1/devices/28-0516a207a4ff
+#May 27 21:38 /sys/bus/w1/devices/28-0316a2193bff
+#May 27 21:38 /sys/bus/w1/devices/28-0316a21383ff
 
+# Eine Funktion:
 # einen Sensor auslesen
 #/sys/bus/w1/devices/
-sensorfile = "/sys/bus/w1/devices/28-0316a21383ff/w1_slave"
 
-file = open(sensorfile)
+class ReadsensorError(RuntimeError):
+    pass
+    
+    
+def readsensor(sensor_id):
+    sensorfile = "/sys/bus/w1/devices/28-{}/w1_slave".format(sensor_id)
+    file = open(sensorfile)
 
-# Inhalt des Sensors:
-# 64 01 4b 46 7f ff 0c 10 01 : crc=01 YES
-# 64 01 4b 46 7f ff 0c 10 01 t=22250
+    # Inhalt des Sensors:
+    # 64 01 4b 46 7f ff 0c 10 01 : crc=01 YES
+    # 64 01 4b 46 7f ff 0c 10 01 t=22250
 
-# Suche nach YES
-linecrc = file.readline()
-match = re.search(": crc=[0-9a-f]{2} (YES|NO)",linecrc)
+    # Suche nach YES
+    linecrc = file.readline()
+    match = re.search(": crc=[0-9a-f]{2} (YES|NO)",linecrc)
 
-yesno = match.group(1)
-if yesno != "YES":
-    sys.exit(1)
+    yesno = match.group(1)
+    if yesno != "YES":
+        raise ReadsensorError('Could not evaluate sensorfile "{}"'.format(sensorfile))
+        
+    # Temperatur raus
+    linetemp = file.readline()
+    match = re.search(" t=([-0-9]+)",linetemp)
 
-# Temperatur raus
-linetemp = file.readline()
-match = re.search(" t=([-0-9]+)",linetemp)
+    temp_raw = match.group(1)
+    temp = float(temp_raw)/1000
 
-temp = match.group(1)
-temp = float(temp)/1000
+    file.close()
+    jetzt = datetime.datetime.now()
 
-file.close()
+    return jetzt, temp_raw, temp
 
 
-print(temp)
+def writesensordatacsv(config, sensor_id, sensor_name, timestamp, value_type, value_raw, value):
+    # Schreiben des csv-files
+    with open(os.path.expanduser(config.get("csv", "filename")), "a", newline = "") as file:
+        writer = csv.writer(file, dialect = "excel")
+        writer.writerow([timestamp.strftime("%Y-%m-%d %H:%M"), sensor_id, sensor_name, "{:.1f}".format(value)])
+
+
+def readcsvfile(csvfile):
+    with open(csvfile, "r", newline="") as file:
+        yield from csv.DictReader(file, dialect = "excel", fieldnames=("timestamp", "sensor_id", "sensor_name", "value"))
+
+
+def writesensordatadb(config, sensor_id, sensor_name, timestamp, value_type, value_raw, value):
+    # Schreiben des db-files
+    user = config.get('database', 'user')
+    pwd = config.get('database','password')
+    host = config.get('database','hostname')
+    db = config.get('database','database')
+    
+    engine = create_engine('mysql+mysqldb://{}:{}@{}/{}'.format(user, pwd, host, db), echo=False)
+    conn = engine.connect()
+    with warnings.catch_warnings():
+        # ignore _mysql_exceptions.Warning: Duplicate entry '0316a2193bff-2018-08-29 14:30:00' for key 'sensorid_timestamp'
+        warnings.simplefilter("ignore", category=MySQLdb.cursors.Warning)
+        if args.verbose:
+            logging.info("Writing to database: sensor_id={}, sensor_name={}, value_type={}, value_raw={}, value={}, timestamp={}".format(sensor_id, sensor_name, value_type, value_raw, value, timestamp))
+        conn.execute("insert ignore into sensors (sensor_id, sensor_name, value_type, value_raw, value, timestamp) values (%s,%s,%s,%s,%s,%s)", sensor_id, sensor_name, value_type, value_raw, value, timestamp)
+    conn.close()
+
+
+def process_csv_file(config, fromcsvfile, value_type, sensors):
+    # "timestamp", "sensor_id", "sensor_name", "value"
+    sensors_ids = [sensor_id for sensor_id, sensor_name in sensors]
+    for record in readcsvfile(fromcsvfile):
+        timestamp, sensor_id, sensor_name, value = (record["timestamp"], record["sensor_id"], record["sensor_name"], float(record["value"]))
+        if sensor_id in sensors_ids:
+            value_raw = None
+            writesensordatadb(config, sensor_id, sensor_name, timestamp, value_type, value_raw, value)
+
+
+def main(configfile, fromcsvfile):
+    config = configparser.ConfigParser()
+    config.read(configfile)
+    sensors = config.items('temperature')
+    value_type = "Wassertemperatur"
+
+    if fromcsvfile:
+        process_csv_file(config, fromcsvfile, value_type, sensors)
+        return
+
+    for sensor_id, sensor_name in sensors:
+        timestamp, value_raw, value = readsensor(sensor_id)
+        writesensordatacsv(config, sensor_id, sensor_name, timestamp, value_type, value_raw, value)
+        writesensordatadb(config, sensor_id, sensor_name, timestamp, value_type, value_raw, value)
+        if args.verbose:
+            logging.info('Sensor {}: {:.1f}°C'.format(sensor_id, value))
+
+
+if __name__ == '__main__':
+    default_config_file = os.path.expanduser('~/seewasser.ini')
+    parser = argparse.ArgumentParser(description='Read sensor data')
+    parser.add_argument('--config', default=default_config_file, help='configuration file')
+    parser.add_argument('--fromcsvfile', help='write values from csv file to database')
+    parser.add_argument("--verbose", help='write some output', action='store_true')
+    args = parser.parse_args()
+    main(args.config, args.fromcsvfile)
 
-# Nur für die Ausgabe wird gerundet
-print('Die Seetemperatur ist {:.1f}°C'.format(temp))
\ No newline at end of file