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#!/bin/python3
import os
import sys
import json
import psycopg2
import requests
import xmltodict
from datetime import datetime
from datetime import timedelta
from tzlocal import get_localzone
from dateutil import tz
# variables
# Getting an api-key isn't very well documented. The documentation [1] points
# to a pdf [2], which says the following:
# > In order to request the access to the Restful API, please register on the
# > Transparency Platform and send an email to transparency@entsoe.eu with
# > “Restful API access” in the subject line. Indicate the email address you
# > entered during registration in the email body. We will make our best to
# > respond to your request.
# 1: https://transparency.entsoe.eu/content/static_content/Static%20content/web%20api/Guide.html#_authentication_and_authorisation
# 2: https://transparency.entsoe.eu/content/static_content/download?path=/Static%20content/API-Token-Management.pdf
apiKey = os.environ['el_entsoe_token']
# https://transparency.entsoe.eu/content/static_content/Static%20content/web%20api/Guide.html
apiUrl = "https://transparency.entsoe.eu/api?securityToken=" + apiKey
pg_db = os.environ['el_pg_db']
pg_host = os.environ['el_pg_host']
pg_table = "entsoe"
startTime = datetime.now(get_localzone()) - timedelta(days = 7)
startTime = startTime.strftime('%Y%m%d')
endTime = datetime.now(get_localzone()) + timedelta(days = 1)
endTime = endTime.strftime('%Y%m%d')
# https://transparency.entsoe.eu/content/static_content/Static%20content/web%20api/Guide.html#_areas
areas = [ {"name": "NO-0", "code": "10YNO-0--------C"},
{"name": "NO-1", "code": "10YNO-1--------2"},
{"name": "NO-2", "code": "10YNO-2--------T"},
{"name": "NO-3", "code": "10YNO-3--------J"},
{"name": "NO-4", "code": "10YNO-4--------9"} ]
UTC = tz.gettz('UTC')
CET = tz.gettz('Europe/Oslo')
# Get the data
values=[]
for area in areas:
try:
url = apiUrl + "&documentType=A44&in_Domain=" + area["code"] + "&out_Domain=" + area["code"] + "&periodStart=" + startTime + "0000&periodEnd=" + endTime + "0000"
print("Getting data for " + area["code"])
response = requests.get(url)
if response.status_code != 200:
print(response.status_code)
print("Oh shit")
response.raise_for_status()
except Exception as e:
print("oh lol")
sys.exit(e)
data_dict = xmltodict.parse(response.content)
items = 0
if "Publication_MarketDocument" in data_dict:
for lista in data_dict["Publication_MarketDocument"]["TimeSeries"]:
utctime = datetime.strptime(lista["Period"]["timeInterval"]["start"], "%Y-%m-%dT%H:%MZ")
utctime = utctime.replace(tzinfo = UTC)
cettime = utctime.astimezone(CET)
items += len(lista["Period"]["Point"])
for item in lista["Period"]["Point"]:
# the response contains timerange, but not timestamp for every price, so we must calculate it
time = str(cettime + timedelta(hours = int(item["position"]) - 1))
# append values
values.append((time, area["name"], item["price.amount"]))
print("Got " + str(items) + " records")
# connect to db
conn = psycopg2.connect(database=pg_db, host=pg_host)
cur = conn.cursor()
# count rows before we start
cur.execute("SELECT COUNT(*) FROM " + pg_table)
before = cur.fetchone()
# insert data
print("Inserting into database")
try:
cur.executemany("INSERT INTO " + pg_table + " VALUES(%s,%s,%s) ON CONFLICT (starttime, zone) DO NOTHING", values)
conn.commit()
except Exception as e:
conn.rollback()
raise e
# count rows after we finnish
cur.execute("SELECT COUNT(*) FROM " + pg_table)
after = cur.fetchone()
# count *new* rows
newRows = after[0] - before[0]
# close connection
conn.close()
print("Successfully inserted " + str(newRows) + " records into the database")
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