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# -*- coding: utf-8 -*-
import bottle
import sqlalchemy
from sqlalchemy import create_engine, select
from sqlalchemy.orm import sessionmaker
from sqlalchemy.sql import text
from sqlalchemy.ext.sqlsoup import SqlSoup
from sqlalchemy import or_, and_, desc
from ebus.sql import model
import os
import json
import datetime
import time
app = bottle.Bottle("ebus")
bottle.debug()
engine = create_engine("postgresql://ebus:ebus@10.2.2.26/ebus", echo=True)
Session = sessionmaker()
Session.configure(bind=engine)
soup = SqlSoup(engine)
@app.route('/')
def index_file():
return static_files("index.html")
@app.route('/static/:filename')
def static_files(filename):
return bottle.static_file(filename, root=os.path.join(os.path.dirname(__file__),"static"))
@app.route('/sensor/:name')
def sensor_data_single(name):
#s = Session()
#sensorid = s.query(model.Sensor).filter(model.Sensor.name == name).first()
#values = Session().query(model.Value).add_columns("timestamp","value_float","value_string","value_int")
#values = values.filter(model.Value.sensor == sensorid)
#return json.dumps(values.first().value_int)
return sensor_data_fromto(name,None,None)
@app.route('/sensor/:name/:startdate/:enddate')
def sensor_data_fromto(name,startdate,enddate):
s = Session()
sensorid = s.query(model.Sensor).filter(model.Sensor.name == name).first()
values = Session().query(model.Value).add_columns("timestamp","value_float","value_string","value_int")
values = values.filter(model.Value.sensor == sensorid)
if startdate == None or enddate == None:
queried_values = []
queried_values.append(values.first())
else:
now = datetime.datetime.now()
f = datetime.datetime.fromtimestamp(float(startdate))
t = datetime.datetime.fromtimestamp(float(enddate))
values = values.filter(model.Value.timestamp.between(f,t))
queried_values = values.all()
v = []
for value in queried_values:
if value.value_float != None:
v.append([int((time.mktime(value.timestamp.timetuple())+time.altzone*-1)*1000),value.value_float]) # time.altzone ist negativ
elif value.value_int != None:
v.append([int((time.mktime(value.timestamp.timetuple())+time.altzone*-1)*1000),value.value_int])
elif value.value_string != None:
v.append([int((time.mktime(value.timestamp.timetuple())+time.altzone*-1)*1000),value.value_string])
return json.dumps(v)
# rechnet zeit so um wie Javascript
# teil es braucht XXX
def maketime(datetime):
return (time.mktime(datetime.timetuple())+time.altzone*-1)*1000
@app.route('/sensor_cached/:name/:timestamp_from')
def sensor_data_cached_fromto(name, timestamp_from):
try:
timestamp_from = datetime.datetime.fromtimestamp(float(timestamp_from))
# get sensor_id for name
sensor_id = soup.sensor.filter(soup.sensor.name == name).one().id
# select data from cache-view
conn = soup.connection()
s = text("""SELECT timestamp, value_real AS "value_real"
FROM vi_value_cache
WHERE timestamp >= :timestamp_from
AND sensor_id = :sensor_id
ORDER BY timestamp""")
values = conn.execute(s, timestamp_from=timestamp_from, sensor_id=sensor_id).fetchall()
values = map(lambda row: (maketime(row.timestamp),
row.value_real.__float__()),
values)
return {'data':values, 'error':None}
except Exception,e:
return {'data':None, 'error':str(e)}
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