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from django.shortcuts import render
from django.http import HttpResponse
from django.contrib.auth.decorators import login_required
from django.contrib.auth import authenticate
from django.contrib.auth import login as LOGIN
from sbhs_server.tables.models import Slot, Account, Experiment, Booking
import json, datetime, os, time
from django.views.decorators.csrf import csrf_exempt
from sbhs_server import settings
# Create your views here.
#
def check_connection(req):
return HttpResponse("TESTOK")
@csrf_exempt
def initial_login(req):
username = req.POST.get("username")
rpi_ip = ''
try:
assigned_mid = Account.objects.select_related().get(username=username).board.mid
except Exception as e:
return HttpResponse(json.dumps({"STATUS": 400, "MESSAGE": "Invalid username"}))
rpi_ip = settings.pi_ip_map[str(assigned_mid)]
return HttpResponse(json.dumps({"STATUS": 200, "MESSAGE": rpi_ip}))
# return HttpResponse(key)
# @login_required(redirect_field_name=None)
@csrf_exempt
def experiment(req):
try:
server_start_ts = int(time.time() * 1000)
from sbhs_server.settings import boards
user = req.user
key = str(user.board.mid)
experiment = Experiment.objects.select_related().filter(id=boards[key]["experiment_id"])
if len(experiment) == 1 and user.id == experiment[0].booking.account.id and experiment[0].booking.trashed_at == None:
experiment = experiment[0]
now = datetime.datetime.now()
endtime = experiment.booking.end_time()
if endtime > now:
timeleft = int((endtime-now).seconds)
heat = max(min(int(req.POST.get("heat")), 100), 0)
fan = max(min(int(req.POST.get("fan")), 100), 0)
boards[key]["board"].setHeat(heat)
boards[key]["board"].setFan(fan)
temperature = boards[key]["board"].getTemp()
log_data(boards[key]["board"], key, experiment.id, heat=heat, fan=fan, temp=temperature)
server_end_ts = int(time.time() * 1000)
STATUS = 1
MESSAGE = "%s %d %d %2.2f" % (req.POST.get("iteration"),
heat,
fan,
temperature)
MESSAGE = "%s %s %d %d,%s,%d" % (MESSAGE,
req.POST.get("timestamp"),
server_start_ts,
server_end_ts,
req.POST.get("variables"), timeleft)
f = open(experiment.log, "a")
f.write(" ".join(MESSAGE.split(",")[:2]) + "\n")
f.close()
else:
# boards[key]["board"].setHeat(0)
# boards[key]["board"].setFan(100)
# log_data(boards[key]["board"], key)
reset(req)
STATUS = 0
MESSAGE = "Slot has ended. Please book the next slot to continue the experiment."
reset(req)
boards[key]["experiment_id"] = None
else:
STATUS = 0
MESSAGE = "You haven't booked this slot."
return HttpResponse(json.dumps({"STATUS": STATUS, "MESSAGE": MESSAGE}))
except Exception:
return HttpResponse(json.dumps({"STATUS": 0, "MESSAGE": "Invalid input. Perhaps the slot has ended. Please book the next slot to continue the experiment."}))
@csrf_exempt
def reset(req):
try:
from sbhs_server.settings import boards
user = req.user
if user.is_authenticated():
key = str(user.board.mid)
experiment = Experiment.objects.select_related().filter(id=boards[key]["experiment_id"])
if len(experiment) == 1 and user == experiment[0].booking.account:
experiment = experiment[0]
now = datetime.datetime.now()
endtime = experiment.booking.end_time()
boards[key]["board"].setHeat(0)
boards[key]["board"].setFan(100)
log_data(boards[key]["board"], key, experiment.id, 0, 100)
if endtime < now:
boards[key]["experiment_id"] = None
except:
pass
return HttpResponse("")
def client_version(req):
return HttpResponse("3")
@login_required(redirect_field_name=None)
def logs(req):
bookings = Booking.objects.only("id").filter(account__id=req.user.id)
deleted_bookings = Booking.trash.only("id").filter(account__id=req.user.id)
bookings = list(bookings) + list(deleted_bookings)
booking_ids = [b.id for b in bookings]
experiments = Experiment.objects.select_related("booking", "booking__slot").filter(booking_id__in=booking_ids)
for e in experiments:
e.logname = e.log.split("/")[-1]
return render(req, "experiment/logs.html", {"experiments": reversed(experiments)})
@login_required(redirect_field_name=None)
def download_log(req, experiment_id, fn):
try:
experiment_data = Experiment.objects.select_related("booking", "booking__account").get(id=experiment_id)
assert req.user.id == experiment_data.booking.account.id
f = open(experiment_data.log, "r")
data = f.read()
f.close()
return HttpResponse(data, content_type='text/text')
except:
return HttpResponse("Requested log file doesn't exist.")
def log_data(sbhs, mid, experiment_id, heat=None, fan=None, temp=None):
if heat is None:
heat = sbhs.getHeat()
if fan is None:
fan = sbhs.getFan()
if temp is None:
temp = sbhs.getTemp()
data = "%f %s %s %s\n" % (time.time(), str(heat), str(fan), str(temp))
experiment_logfile = Experiment.objects.get(id=experiment_id).log
global_logfile = settings.SBHS_GLOBAL_LOG_DIR + "/" + str(mid) + ".log"
with open(global_logfile, "a") as global_loghandler, open(experiment_logfile, "a") as experiment_loghandler:
global_loghandler.write(data)
experiment_loghandler.write(data)
def validate_log_file(req):
import hashlib
data = req.POST.get("data")
data = data.strip().split("\n")
clean_data = ""
for line in data:
columns = line.split(" ")
if len(columns) >= 6:
clean_data += (" ".join(columns[0:6]) + "\n")
checksum = hashlib.sha1(clean_data).hexdigest()
try:
e = Experiment.objects.get(checksum=checksum)
return HttpResponse("TRUE")
except:
return HttpResponse("FALSE")
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