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107 lines
3.7 KiB
Python
107 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# BITE - A Basic/IoT/Example
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# Copyright (C) 2020 Daniele Viganò <daniele@vigano.me>
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#
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# BITE is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# BITE is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from django.http import Http404
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from django.utils import timezone
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from django.utils.dateparse import parse_datetime
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from rest_framework.views import APIView
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from rest_framework.viewsets import ModelViewSet
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from telemetry.models import Telemetry
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from telemetry.serializers import (TelemetrySerializer,
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TelemetrySummarySerializer)
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from rest_framework.response import Response
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from rest_framework.exceptions import ParseError
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class TelemetryView(ModelViewSet):
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queryset = Telemetry.objects.all()
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serializer_class = TelemetrySerializer
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lookup_field = 'device'
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def list(self, request, device=None):
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queryset = Telemetry.objects.filter(device__serial=device)
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if not queryset:
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raise Http404
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serializer = TelemetrySerializer(queryset, many=True)
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return Response(serializer.data)
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class TelemetrySummaryView(APIView):
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def get(self, request, device, format=None):
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count = Telemetry.objects.filter(device__serial=device).count()
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if count == 0:
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raise Http404
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first = Telemetry.objects.filter(
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device__serial=device).order_by('time')[:1][0]
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last = Telemetry.objects.filter(
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device__serial=device).order_by('-time')[:1][0]
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data = {
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'device': device,
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'stats': {
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'count_samples': count,
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'first_sample': first.time,
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'last_sample': last.time}
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}
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serializer = TelemetrySummarySerializer(data)
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return Response(serializer.data)
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class TelemetryRange(ModelViewSet):
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queryset = Telemetry.objects.all()
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serializer_class = TelemetrySerializer
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lookup_field = 'device'
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@staticmethod
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def datetime_validation(datetime):
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parsed_datetime = parse_datetime(datetime)
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if parsed_datetime is None:
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raise ParseError({
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datetime: 'Invalid date format'
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})
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return timezone.make_aware(parsed_datetime)
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def list(self, request, device, time_from, time_to=None):
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time_from = self.datetime_validation(time_from)
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time_to = (
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timezone.now() if time_to is None else
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self.datetime_validation(time_to)
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)
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queryset = Telemetry.objects.filter(
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device__serial=device,
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time__range=[time_from, time_to])
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if not queryset:
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raise Http404
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serializer = TelemetrySerializer(queryset, many=True)
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return Response(serializer.data)
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class TelemetryLatest(ModelViewSet):
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queryset = Telemetry.objects.all()
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serializer_class = TelemetrySerializer
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lookup_field = 'device'
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def retrieve(self, request, device=None):
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queryset = Telemetry.objects.filter(
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device__serial=device).order_by('-time')[:1]
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if not queryset:
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raise Http404
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serializer = TelemetrySerializer(queryset[0])
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return Response(serializer.data)
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