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loader.py
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loader.py
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#!/usr/bin/env python
from datetime import datetime
import json
import logging
import os
import time
import traceback
import psycopg2
from psycopg2.extras import Json
import schedule
from pjm import LMPLoader
last_updated_format = '%a %b %d %H:%M:%S EST %Y'
def save_lmp():
try:
print(datetime.now(), "Saving LMP data")
with psycopg2.connect("dbname='%s' user='%s' host='db' password='%s'" % (
os.environ['POSTGRESQL_DATABASE'],
os.environ['POSTGRESQL_USER'],
os.environ['POSTGRESQL_PASSWORD'])) as conn:
with conn.cursor() as cur:
pjm_url = 'http://oasis.pjm.com/system.htm'
system_file = '/tmp/system2.htm'
cache_time = 5 * 60
loader = LMPLoader(pjm_url, system_file, cache_time)
data = loader.parse()
last_updated = datetime.strptime(data['last_updated'], last_updated_format)
cur.execute("INSERT INTO lmp(entry_date, doc) VALUES(%s, %s);",
(last_updated, Json(data)))
except Exception as e:
logging.error(traceback.format_exc())
schedule.every(5).minutes.do(save_lmp)
while True:
schedule.run_pending()
time.sleep(1)