# -*- coding: utf-8 -*- import os import json import datetime import time import bottle from sqlalchemy import text app = bottle.Bottle("ebus") def maketime(datetime): """rechnet zeit so um wie Javascript es braucht XXX""" return (time.mktime(datetime.timetuple())+time.altzone*-1)*1000 @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(soup,name): try: sensor_id = soup.sensor.filter(soup.sensor.name == name).one().id conn = soup.connection() sql = text("""SELECT timestamp, COALESCE(value_int, value_float) as "value_real" FROM value WHERE sensor_id = :sensor_id ORDER BY timestamp DESC LIMIT 1""") value = conn.execute(sql, sensor_id=sensor_id).first() return {'sensor':name,'data':[maketime(value.timestamp), float(value.value_real)], 'error':None} except Exception,e: return {'sensor':name,'data':None, 'error':str(e)} @app.route('/sensor/:name/:startdate/:enddate') def sensor_data_fromto(soup,name,startdate,enddate): try: interval = float(enddate) - float(startdate) modulo = interval / 500 #500 values startdate = datetime.datetime.fromtimestamp(float(startdate)) enddate = datetime.datetime.fromtimestamp(float(enddate)) if interval <= 0: raise Exception("Invalid interval") if interval >= 14 * 24 * 60 * 60: raise Exception("interval too big") sensor_id = soup.sensor.filter(soup.sensor.name == name).one().id conn = soup.connection() sql = text(""" SELECT to_timestamp( extract(epoch from timestamp)::int - extract(epoch from timestamp)::int % :modulo ) "round_timestamp", AVG(COALESCE(value_int,value_float)) "value_real" FROM value WHERE timestamp > :startdate AND timestamp < :enddate AND sensor_id = :sensor_id GROUP BY "round_timestamp" ORDER BY "round_timestamp" """) values = conn.execute(sql, sensor_id=sensor_id, startdate=startdate, enddate=enddate, modulo=modulo).fetchall() values = map(lambda row: (maketime(row.round_timestamp), row.value_real), values) return {'sensor':name,'data':values, 'error':None} except Exception,e: return {'sensor':name, 'data':None, 'error':str(e)} @app.route('/sensor_cached/:name/:timestamp_from') def sensor_data_cached_fromto(soup, name, timestamp_from): try: timestamp_from = datetime.datetime.fromtimestamp(float(timestamp_from)) sensor_id = soup.sensor.filter(soup.sensor.name == name).one().id # select data from cache-view conn = soup.connection() sql = 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(sql, timestamp_from=timestamp_from, sensor_id=sensor_id).fetchall() values = map(lambda row: (maketime(row.timestamp), row.value_real.__float__()), values) return {'sensor':name,'data':values, 'error':None} except Exception,e: return {'sensor':name, 'data':None, 'error':str(e)} # vim: autoindent tabstop=4 shiftwidth=4 expandtab softtabstop=4 filetype=python