You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
dwd-scraper/scraper/daily_import_climate.py

110 lines
4.1 KiB

#! /usr/bin/env python3
import psycopg2
import requests
import io
import zipfile
import datetime
from config.db import db as config_db
def cleanup_value(v):
if int(v) == -999:
return None
return v
conn = psycopg2.connect(config_db["uri"])
cur = conn.cursor()
cur.execute("SELECT min(dwd_last_update) FROM stations;")
last_date = cur.fetchall()[0][0]
print(last_date)
if not last_date is None:
cur.execute("SELECT id, name, lat, lon, dwd_id, dwd_last_update FROM stations WHERE dwd_last_update = %s LIMIT 1;", [last_date])
else:
cur.execute("SELECT id, name, lat, lon, dwd_id, dwd_last_update FROM stations WHERE dwd_last_update IS NULL LIMIT 1;")
last_station = cur.fetchone()
print(last_station)
curr_station_id = last_station[0]
curr_station_dwd_id = last_station[4]
print(curr_station_dwd_id)
r = requests.get('https://opendata.dwd.de/climate_environment/CDC/observations_germany/climate/daily/kl/recent/tageswerte_KL_' + str(curr_station_dwd_id) + '_akt.zip', stream=True)
print(r.url)
if r.status_code == 200:
zip = zipfile.ZipFile(io.BytesIO(r.content))
files = zip.namelist()
print(files)
files_climate = [f for f in files if f.startswith("produkt_klima_")]
print(files_climate)
buffer = []
is_first_line = True
for line in zip.open(files_climate[0]):
l = line.decode('utf-8').strip()
if is_first_line:
is_first_line = False
continue
b = {}
b["dwd_id"], l = l.strip().split(";", 1)
b["dwd_id"] = str(b["dwd_id"])
b["date"], l = l.strip().split(";", 1)
b["date"] = str(b["date"])
b["date"] = datetime.date(int(b["date"][0:4]), int(b["date"][4:6]), int(b["date"][6:8]))
b["qn_3"], l = l.strip().split(";", 1)
b["qn_3"] = cleanup_value(int(b["qn_3"]))
b["fx"], l = l.strip().split(";", 1)
b["fx"] = cleanup_value(float(b["fx"]))
b["fm"], l = l.strip().split(";", 1)
b["fm"] = cleanup_value(float(b["fm"]))
b["qn_4"], l = l.strip().split(";", 1)
b["qn_4"] = cleanup_value(int(b["qn_4"]))
b["rsk"], l = l.strip().split(";", 1)
b["rsk"] = cleanup_value(float(b["rsk"]))
b["rskf"], l = l.strip().split(";", 1)
b["rskf"] = cleanup_value(int(b["rskf"]))
b["sdk"], l = l.strip().split(";", 1)
b["sdk"] = cleanup_value(float(b["sdk"]))
b["shk_tag"], l = l.strip().split(";", 1)
b["shk_tag"] = cleanup_value(float(b["shk_tag"]))
b["nm"], l = l.strip().split(";", 1)
b["nm"] = cleanup_value(float(b["nm"]))
b["vpm"], l = l.strip().split(";", 1)
b["vpm"] = cleanup_value(float(b["vpm"]))
b["pm"], l = l.strip().split(";", 1)
b["pm"] = cleanup_value(float(b["pm"]))
b["tmk"], l = l.strip().split(";", 1)
b["tmk"] = cleanup_value(float(b["tmk"]))
b["upm"], l = l.strip().split(";", 1)
b["upm"] = cleanup_value(float(b["upm"]))
b["txk"], l = l.strip().split(";", 1)
b["txk"] = cleanup_value(float(b["txk"]))
b["tnk"], l = l.strip().split(";", 1)
b["tnk"] = cleanup_value(float(b["tnk"]))
b["tgk"], l = l.strip().split(";", 1)
b["tgk"] = cleanup_value(float(b["tgk"]))
#print(b)
print(curr_station_id, b["date"].isoformat())
cur.execute("SELECT id FROM climate WHERE station = %s AND date = %s; ", [curr_station_id, b["date"].isoformat()])
if cur.rowcount == 0:
cur.execute("INSERT INTO climate (station, date, qn_3, fx, fm, qn_4, rsk, rskf, sdk, shk_tag, nm, vpm, pm, tmk, upm, txk, tnk, tgk) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s);",
[curr_station_id, b["date"].isoformat(), b["qn_3"], b["fx"], b["fm"], b["qn_4"], b["rsk"], b["rskf"], b["sdk"], b["shk_tag"], b["nm"], b["vpm"], b["pm"], b["tmk"], b["upm"], b["txk"], b["tnk"], b["tgk"]])
print("imported")
else:
print("ignored")
cur.execute("UPDATE stations SET dwd_last_update = %s WHERE id = %s;", [datetime.datetime.today().isoformat(), curr_station_id])
conn.commit()
cur.close()
conn.close()