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webserver.py
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webserver.py
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from flask import Flask, render_template, request, make_response, jsonify
import sqlite3
import datetime
import io
import os
import database
import excel
import getchartdata
app = Flask(__name__)
@app.route('/')
def index():
return render_template('index.html',
title='Solstice')
@app.route('/about/')
def about():
return render_template('about.html')
def chart_meter_line(meterId):
h, d = get_meter_readings(meterId)
x = []; y1 = []; y2 = []; y3 = []
for row in d:
x.append(datetime.datetime.strptime(row[0], '%Y-%m-%d %H:%M:%S'))
y1.append(row[1])
y2.append(row[2])
y3.append(row[3])
fig=Figure()
ax=fig.add_subplot(111)
ax.plot_date(x, y1, '-')
ax.plot_date(x, y2, '-')
ax.plot_date(x, y3, '-')
fig.autofmt_xdate()
return fig
@app.route('/meters/')
@app.route('/meters/<meterId>/')
def meters(meterId=None):
""" Generates the required data for the meters page
"""
if meterId is None:
h, d = get_meter_list()
tableMeterList = {'headings':h, 'data':d}
return render_template('meters.html', tableMeterList=tableMeterList)
else:
lat, lon = get_meter_coords(meterId)
location = {'lat':lat, 'lon':lon}
settings_filename = os.path.abspath('settings/dbExample.json')
query_filename = os.path.abspath('sql/MonthlyReports.sql')
params_dict = {'METERID': meterId}
h, d = database.run_query(settings_filename, query_filename, params_dict)
reports = {'headings':h, 'data':d}
settings_filename = os.path.abspath('settings/dbExample.json')
query_filename = os.path.abspath('sql/Last10Events.sql')
params_dict = {'METERID': meterId}
h, d = database.run_query(settings_filename, query_filename, params_dict)
tableLast10Events = {'headings':h, 'data':d}
return render_template('meter.html', meterId=meterId,
tableLast10Events=tableLast10Events,
location=location, reports=reports)
@app.route('/chartdata/')
@app.route('/chartdata/<meterId>.json')
def chartdata(meterId=None):
if meterId is None:
return 'json chart api'
else:
if request.method == 'GET':
params = request.args.to_dict()
elif request.method == 'POST':
params = request.form.to_dict()
else:
params = {}
cType = params['cType']
if cType == 'volt':
flotData = getchartdata.get_voltage_chart_data(meterId)
elif cType == 'thd':
flotData = getchartdata.get_thd_chart_data(meterId)
elif cType == 'unbal':
flotData = getchartdata.get_unbal_chart_data(meterId)
elif cType == 'events':
flotData = getchartdata.get_events_chart_data(meterId)
return jsonify(flotData)
@app.route('/reports/')
@app.route('/reports/<meterId>', methods=['POST', 'GET'])
def reports(meterId=None):
""" Creates excel .xlsx reports for a given date range
"""
if meterId is None:
return 'Report API'
else:
if request.method == 'GET':
params = request.args.to_dict()
elif request.method == 'POST':
params = request.form.to_dict()
else:
params = {}
try:
sDate = params['sDate']
eDate = params['eDate']
except KeyError:
return 'ERROR: URL must be in form meterNo?sDate=2014-06-01&eDate=2014-06-02'
settings_filename = os.path.abspath('settings/dbExample.json')
query_filename = os.path.abspath('sql/MeterReadings.sql')
params_dict = {'METERID': meterId, 'SDATE':sDate, 'EDATE':eDate}
hProfile, dProfile = database.run_query(settings_filename, query_filename, params_dict)
OnePhase = False
settings_filename = os.path.abspath('settings/dbExample.json')
query_filename = os.path.abspath('sql/MeterEvents.sql')
params_dict = {'METERID': meterId, 'SDATE':sDate, 'EDATE':eDate}
hEvents, dEvents = database.run_query(settings_filename, query_filename, params_dict)
filePath = excel.create_excel_report(meterId, sDate, eDate, OnePhase, hProfile, dProfile,
hEvents, dEvents)
return render_template('report_download.html', filePath=filePath)
def get_meter_list():
settings_filename = os.path.abspath('settings/dbExample.json')
query_filename = os.path.abspath('sql/ListMeters.sql')
params_dict = {}
headings, rows = database.run_query(settings_filename, query_filename, params_dict)
return headings, rows
def get_meter_coords(meterId):
dbPath = 'data/meters.db'
conn = sqlite3.connect(dbPath)
curs = conn.cursor()
settings_filename = os.path.abspath('settings/dbExample.json')
query_filename = os.path.abspath('sql/MeterCoords.sql')
params_dict = {'METERID': meterId}
headings, rows = database.run_query(settings_filename, query_filename, params_dict)
lat = rows[0][0]
lon = rows[0][1]
return lat, lon