106 lines
3.2 KiB
Python
106 lines
3.2 KiB
Python
"""
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Web Interface
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Regelmäßiges Abfragen von Daten im Internet
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- NAVTEX
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- DWD
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- Pegelstände
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- pegelonline
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- WSV
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- Wetterinformationen
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"""
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import os
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import http.client
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import ssl
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import re
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import sqlite3
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import datetime
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from gi.repository import GLib
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class WebInterface():
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def __init__(self, logger, cfg):
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self.log = logger
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dbpath = os.path.join(cfg['histpath'], "tidedata.db")
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try:
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self.conn = sqlite3.connect(dbpath)
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self.cur = self.conn.cursor()
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except:
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self.log.error(f"Failed to open tide database: {dbpath}")
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return
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# Datenbank erstellen wenn nicht vorhanden
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sql = "SELECT name FROM sqlite_master WHERE type='table' AND name='station'"
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self.cur.execute(sql)
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if self.cur.fetchone() == None:
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sql = ("CREATE TABLE IF NOT EXISTS station ("
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"uuid TEXT PRIMARY KEY NOT NULL,"
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"name TEXT"
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)
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self.cur.execute(sql)
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self.log.info(f"Created tide database: {dbpath}")
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# In der Konfiguration werden Minuten angegeben
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#GLib.timeout_add_seconds(cfg['tide_refresh'] * 60, self.on_timer)
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GLib.timeout_add_seconds(60 * 60, self.on_timer)
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self.running = True
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def __del__(self):
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self.conn.close()
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def on_timer(self):
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"""
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Data handling
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"""
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self.refresh()
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self.housekeeping()
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return True
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def bsh_get_data(self, local=False):
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"""
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Webseite auslesen
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"""
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if local:
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# Für Tests um nicht permanent die Webseite abzufragen
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with open("DE__714P.json", "r") as fh:
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content = fh.read()
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else:
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ssl_context = ssl.create_default_context()
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conn = http.client.HTTPSConnection("wasserstand-nordsee.bsh.de", 443, context=ssl_context)
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url = "https://wasserstand-nordsee.bsh.de/data/DE__714P.json"
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try:
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conn.request("GET", url)
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response = conn.getresponse()
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if response.status == 200:
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content = response.read().decode()
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else:
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print(f"Error: {response.status}")
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return []
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except http.client.HTTPException as e:
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self.log.warning(f"HTTP error occurred: {e}")
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return []
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except ssl.SSLError as ssl_error:
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self.log.warning(f"SSL error occurred: {ssl_error}")
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return []
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return content
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def refresh(self):
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self.log.info("Data refresh")
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data = self.bsh_get_data(True)
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"""
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sql = "INSERT INTO message (msgid, station, content) VALUES (?, ?, ?)"
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for m in messages:
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msg = self.parse_message(m)
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self.cur.execute("SELECT COUNT(*) FROM message WHERE msgid=?", (msg['id'],))
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result = self.cur.fetchone()
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if result[0] == 0:
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self.log.debug(f"NAVTEX: insert new message '{msg['id']}'")
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self.cur.execute(sql, (msg['id'], msg['station'], m))
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self.conn.commit()
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"""
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def housekeeping(self):
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self.log.info("Housekeeping")
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