-from flask import Flask, render_template, jsonify
+from random import uniform
+import datetime
+import time
+import configparser
+import os
+import sys
+from collections import defaultdict
+from flask import Flask, render_template, jsonify, request
+import flask.json
+from flask_sqlalchemy import SQLAlchemy
+
+
+app_path = os.path.dirname(os.path.realpath(__file__))
+lib_path = os.path.join(cur_path, '..')
+sys.path.append(lib_path)
+from seeparklib.openweathermap import openweathermap_json, OpenWeatherMapError
+
+
+class JSONEncoder(flask.json.JSONEncoder):
+ def default(self, object):
+ if isinstance(object, datetime.datetime):
+ return object.isoformat()
+ return super().default(object)
+
+
+def parse_datetime(date_str):
+ return datetime.datetime.strptime(date_str, '%Y-%m-%dT%H:%M:%S')
+
+
+def get_sqlalchemy_database_uri(config):
+ user = config.get('database', 'user')
+ pwd = config.get('database', 'password')
+ host = config.get('database', 'hostname')
+ db = config.get('database', 'database')
+ return 'mysql+mysqldb://{}:{}@{}/{}'.format(user, pwd, host, db)
+
+
+config = configparser.ConfigParser()
+config.read(os.environ['SEEPARKINI'])
+apikey = config.get('openweathermap', 'apikey')
+cityid = config.get('openweathermap', 'cityid')
+mainsensor = config.get('temperature', 'mainsensor')
+
app = Flask(__name__)
+app.json_encoder = JSONEncoder
+app.config['SQLALCHEMY_DATABASE_URI'] = get_sqlalchemy_database_uri(config)
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+db = SQLAlchemy(app)
+db.reflect(app=app)
+
+
+class Sensors(db.Model):
+ __tablename__ = 'sensors'
+
+
+def select_sensordata(initial_where):
+ query = Sensors.query.filter(initial_where)
+ begin = request.args.get('begin', None, parse_datetime)
+ end = request.args.get('end', None, parse_datetime)
+ if begin is not None:
+ query = query.filter(Sensors.timestamp >= begin)
+ if end is not None:
+ query = query.filter(Sensors.timestamp <= end)
+ result = query.all()
+
+ mode = request.args.get('mode', 'full')
+ if mode == 'consolidated':
+ if begin is None or end is None:
+ pass
+ else:
+ # copied from munin/master/_bin/munin-cgi-graph.in
+ resolutions = dict(
+ day = 300,
+ week = 1800,
+ month = 7200,
+ year = 86400,
+ )
+ duration = (end - begin).total_seconds()
+ day = 60 * 60 * 24
+ if duration < day:
+ resolution = resolutions['day']
+ elif duration < 7 * day:
+ resolution = resolutions['week']
+ elif duration < 31 * day:
+ resolution = resolutions['month']
+ else:
+ resolution = resolutions['year']
+ # TODO: filter out samples from 'result'
+ # like loop over results and skip if timestamp(n+1)-timestamp(n)<resolution
+
+ format = request.args.get('format', 'default')
+ if format == 'c3':
+ c3result = defaultdict(list)
+ for row in result:
+ c3result[row.sensor_id].append(row.value)
+ dt = row.timestamp.strftime('%Y-%m-%d %H:%M:%S')
+ c3result[row.sensor_id + '_x'].append(dt)
+ result = c3result
+ return result
+
+
+def currentairtemperature(apikey, cityid):
+ """Retruns the tuple temperature, datetime (as float, datetime) in case of success, otherwise None, None."""
+ try:
+ weatherdata = openweathermap_json(apikey, cityid)
+ return weatherdata['main']['temp'], datetime.datetime.fromtimestamp(weatherdata['dt'])
+ except OpenWeatherMapError:
+ return None, None
+
+
+def currentwatertemperature(sensorid):
+ result = Sensors.query.filter_by(sensor_id=sensorid).order_by(Sensors.timestamp.desc()).first()
+ return result.value, result.timestamp
+
+
+@app.route('/api/<version>/sensors/')
+def sensors(version):
+ """List all sensors found in the database"""
+ result = db.session.query(Sensors.sensor_id, Sensors.sensor_name, Sensors.value_type).distinct().all()
+ return jsonify(result)
+
+
+@app.route('/api/<version>/sensor/id/<sensor_id>')
+def sensorid(version, sensor_id):
+ """Return all data for a specific sensor
+
+ URL parameters:
+ begin=<datetime>, optional, format like "2018-05-19T21:07:53"
+ end=<datetime>, optional, format like "2018-05-19T21:07:53"
+ mode=<full|consolidated>, optional. return all rows (default) or with lower resolution (for charts)
+ format=<default|c3>, optional. return result as returned by sqlalchemy (default) or formatted for c3.js
+ """
+ result = select_sensordata(Sensors.sensor_id == sensor_id)
+ return jsonify([row._asdict() for row in result])
+
+
+@app.route('/api/<version>/sensor/type/<sensor_type>')
+def sensortype(version, sensor_type):
+ """Return all data for a specific sensor type
+
+ URL parameters:
+ begin=<datetime>, optional, format like "2018-05-19T21:07:53"
+ end=<datetime>, optional, format like "2018-05-19T21:07:53"
+ mode=<full|consolidated>, optional. return all rows (default) or with lower resolution (for charts)
+ format=<default|c3>, optional. return result as returned by sqlalchemy (default) or formatted for c3.js
+ """
+ result = select_sensordata(Sensors.value_type == sensor_type)
+ return jsonify(result)
+
+
+@app.route('/data/', defaults={'timespan': 1})
+@app.route("/data/<int:timespan>", methods=['GET'])
+def data(timespan):
+ granularity = 5 * timespan # (every) minute(s) per day
+ samples = 60/granularity * 24 * timespan # per hour over whole timespan
+ s4m = []
+ s4m_x = []
+ s5m = []
+ s5m_x = []
+ end = time.time()
+ start = end - samples * granularity * 60
+
+ for i in range(int(samples)):
+ s4m.append(uniform(-10,30))
+ s5m.append(uniform(-10,30))
+ s4mt = uniform(start, end)
+ s5mt = uniform(start, end)
+ s4m_x.append(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(s4mt)))
+ s5m_x.append(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(s5mt)))
-@app.route("/data")
-def data():
data = {
- '0316a2193bff': [20, 19, 20, 21, 20, 21],
- '0316a2193bff_x': ['2018-05-20 12:00:01', '2018-05-21 13:01:02', '2018-05-22 14:05:00', '2018-05-23 14:05:01', '2018-05-24 14:05:00', '2018-05-27 14:05:02'],
- '0316a21383ff': [27, 32, 26, 29, 30, 31],
- '0316a21383ff_x': [ '2018-05-21 18:00:00', '2018-05-22 14:05:00', '2018-05-23 14:05:00', '2018-05-24 14:05:02', '2018-05-25 14:05:01', '2018-05-27 14:05:01'],
+ '0316a2193bff': s4m,
+ '0316a2193bff_x': s4m_x,
+ '0316a21383ff': s5m,
+ '0316a21383ff_x': s5m_x,
}
+
return jsonify(data)
@app.route("/")
-def hello():
- return render_template('seepark_web.html')
+def index():
+ airvalue, airtime = currentairtemperature(apikey, cityid)
+ watervalue, watertime = currentwatertemperature(mainsensor)
+ return render_template(
+ 'seepark_web.html',
+ apikey=apikey,
+ watervalue=watervalue,
+ watertime=watertime,
+ airvalue=airvalue,
+ airtime=airtime,
+ )
ToastFreeware / chrisu / seepark.git / blobdiff