/
utils.py
179 lines (139 loc) · 4.81 KB
/
utils.py
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import os
from celery import Celery, group, subtask
import sys
import swiftclient.client
from flask import Flask, jsonify
from flask import request
from flask import render_template
import pickledb
import time
import json
from worker_tasks import calc_lift_force
uname = "z"
broker_ip = "x"
passw = "y"
config = {'username':uname,
'api_key':passw,
'project_id':'ACC-Course',
'auth_url':'http://smog.uppmax.uu.se:5000/v2.0',
}
def input_form_user(min_ang,max_ang,nr):
''' input_from_user calculates which angles that should that
lies between 'min_ang' and 'max_ang'
when taking 'nr' or steps between them.
Args:
min_ang (int) : lower limit
max_ang (int) : upper limit
nr (int) : number of steps between lower and upper limit
Returns:
angle_list (int list) : list of angles between max_ang and min_ang when taking 'nr' of steps
'''
min_angle = int(min_ang)
max_angle = int(max_ang)
nr_angles = int(nr)
incr_angle = (max_angle - min_angle) / nr_angles # 0.3
if incr_angle < 1:
incr_angle = 1
else:
incr_angle = int(incr_angle)
print "INCR_ANGLE: " +str(incr_angle)
i = min_angle
angle_list = []
while i < max_angle:
angle_list.append(i)
print "adding angle "+ str(i)
i += incr_angle
return angle_list
# ---REST API---
apps = Flask(__name__)
@apps.route('/')
def my_form():
return render_template("airfoil.html")
def check_db(angle):
''' check_db checks if the key 'angle' exists in the database
Args:
angle : the key (angle) that should be queried
Returns:
True if the key exists
False otherwise
'''
db = pickledb.load('example.db', False)
x = db.get(str(angle))
if x != None:
db.dump()
return True
else:
db.dump()
return False
def add_to_db(ang,(av_l, av_d, angle, dl_url)):
''' add_to_db adds a key/pair to the database
Args:
angle : the key (angle) that should be queried
(av_l,av_d,angle,dl_rul) : the value... A tuple of avrage lift force, avrage drag force, angle calculated on and download URL
Returns:
None
'''
db = pickledb.load('example.db', False)
db.set(str(ang), (av_l, av_d, angle, dl_url))
db.dump()
def get_from_db(angle):
''' get_from_db returns the value of the given key 'angle'
Args:
angle : the key (angle) that should be queried
Returns:
x (tuple) : A tuple of avrage lift force, avrage drag force, angle calculated on and download URL
'''
db = pickledb.load('example.db', False)
x = db.get(str(angle))
return x
@apps.route('/result')
def start():
maxAngle = request.args['maxAngle']
minAngle = request.args['minAngle']
numSamples = request.args['numSamples']
chartID = 'chart_ID'
chart_type = 'line'
chart_height = 350
if minAngle > maxAngle:
return
angle_list = input_form_user(minAngle,maxAngle,numSamples)
a_list = []
db_a_list = []
for ang in angle_list:
a = check_db(ang)
if a == False:
a_list.append(ang)
else:
x = get_from_db(ang)
db_a_list.append(x)
start = time.time()
print "The process have started!"
print "Creating " + str(len(a_list)) +" tasks*******"
tasks = [calc_lift_force.s(angle) for angle in a_list]
task_group = group(tasks)
group_result = task_group()
print "Waiting for workers to finnish..."
while (group_result.ready() == False):
time.sleep(2)
res = group_result.get() # (av_l, av_d, angle, dl_url)
end = time.time()
tot_time = end-start
for (av_l,av_d,angle,dl_url) in res:
add_to_db(angle,(av_l, av_d, angle, dl_url))
resx = res + db_a_list
resy = sorted(resx, key=lambda tup: int(tup[2]))
chart = {"renderTo": chartID, "type": chart_type, "height": chart_height,}
sd = [a for (a,b,c,d) in resy]
sd2 = [b for (a,b,c,d) in resy]
series = [{"name": 'Avrage drag force', "data": sd}, {"name": 'Avrage Lift force', "data": sd2}]
title = {"text": 'Result plot'}
xd = [str(c) for (a,b,c,d) in resy]
dls = [d for (a,b,c,d) in resy]
xAxis = {"categories": xd}
yAxis = {"title": {"text": 'Force'}}
utasks = str(len(a_list))
dbtasks = str(len(db_a_list))
return render_template('result.html', chartID=chartID, chart=chart, series=series, title=title, xAxis=xAxis, yAxis=yAxis,maxAngle=maxAngle,minAngle=minAngle,numSamples=numSamples,tot_time=tot_time,utasks=utasks,dbtasks=dbtasks,dls=dls)
#return render_template("result.html",arg1=maxAngle,arg2=minAngle,arg3=numSamples,tot_time=tot_time)
if __name__ == '__main__':
apps.run(host='0.0.0.0',debug=True)