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452 lines
12 KiB
452 lines
12 KiB
from collections import Counter
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from datetime import timedelta as td
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from itertools import tee
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from django.conf import settings
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from django.contrib.auth.decorators import login_required
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from django.core.urlresolvers import reverse
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from django.db.models import Count
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from django.http import HttpResponseBadRequest, HttpResponseForbidden
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from django.shortcuts import get_object_or_404, redirect, render
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from django.utils import timezone
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from django.utils.crypto import get_random_string
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from django.utils.six.moves.urllib.parse import urlencode
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from hc.api.decorators import uuid_or_400
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from hc.api.models import Channel, Check, Ping, DEFAULT_TIMEOUT, DEFAULT_GRACE
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from hc.front.forms import (AddChannelForm, AddWebhookForm, NameTagsForm,
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TimeoutForm)
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# from itertools recipes:
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def pairwise(iterable):
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"s -> (s0,s1), (s1,s2), (s2, s3), ..."
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a, b = tee(iterable)
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next(b, None)
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return zip(a, b)
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@login_required
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def my_checks(request):
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checks = Check.objects.filter(user=request.team.user).order_by("created")
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counter = Counter()
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down_tags, grace_tags = set(), set()
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for check in checks.iterator():
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status = check.get_status()
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for tag in check.tags_list():
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if tag == "":
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continue
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counter[tag] += 1
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if status == "down":
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down_tags.add(tag)
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elif status == "grace":
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grace_tags.add(tag)
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ctx = {
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"page": "checks",
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"checks": checks,
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"now": timezone.now(),
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"tags": counter.most_common(),
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"down_tags": down_tags,
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"grace_tags": grace_tags
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}
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return render(request, "front/my_checks.html", ctx)
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def _welcome_check(request):
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check = None
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if "welcome_code" in request.session:
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code = request.session["welcome_code"]
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check = Check.objects.filter(code=code).first()
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if check is None:
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check = Check()
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check.save()
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request.session["welcome_code"] = str(check.code)
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return check
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def index(request):
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if request.user.is_authenticated():
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return redirect("hc-checks")
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check = _welcome_check(request)
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ctx = {
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"page": "welcome",
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"check": check,
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"ping_url": check.url(),
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"enable_pushover": settings.PUSHOVER_API_TOKEN is not None
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}
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return render(request, "front/welcome.html", ctx)
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def docs(request):
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check = _welcome_check(request)
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ctx = {
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"page": "docs",
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"section": "home",
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"ping_endpoint": settings.PING_ENDPOINT,
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"check": check,
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"ping_url": check.url()
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}
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return render(request, "front/docs.html", ctx)
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def docs_api(request):
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ctx = {
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"page": "docs",
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"section": "api",
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"SITE_ROOT": settings.SITE_ROOT,
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"PING_ENDPOINT": settings.PING_ENDPOINT,
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"default_timeout": int(DEFAULT_TIMEOUT.total_seconds()),
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"default_grace": int(DEFAULT_GRACE.total_seconds())
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}
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return render(request, "front/docs_api.html", ctx)
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def about(request):
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return render(request, "front/about.html", {"page": "about"})
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@login_required
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def add_check(request):
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assert request.method == "POST"
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check = Check(user=request.team.user)
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check.save()
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check.assign_all_channels()
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return redirect("hc-checks")
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@login_required
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@uuid_or_400
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def update_name(request, code):
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assert request.method == "POST"
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check = get_object_or_404(Check, code=code)
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if check.user_id != request.team.user.id:
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return HttpResponseForbidden()
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form = NameTagsForm(request.POST)
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if form.is_valid():
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check.name = form.cleaned_data["name"]
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check.tags = form.cleaned_data["tags"]
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check.save()
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return redirect("hc-checks")
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@login_required
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@uuid_or_400
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def update_timeout(request, code):
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assert request.method == "POST"
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check = get_object_or_404(Check, code=code)
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if check.user != request.team.user:
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return HttpResponseForbidden()
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form = TimeoutForm(request.POST)
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if form.is_valid():
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check.timeout = td(seconds=form.cleaned_data["timeout"])
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check.grace = td(seconds=form.cleaned_data["grace"])
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check.save()
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return redirect("hc-checks")
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@login_required
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@uuid_or_400
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def remove_check(request, code):
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assert request.method == "POST"
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check = get_object_or_404(Check, code=code)
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if check.user != request.team.user:
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return HttpResponseForbidden()
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check.delete()
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return redirect("hc-checks")
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@login_required
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@uuid_or_400
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def log(request, code):
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check = get_object_or_404(Check, code=code)
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if check.user != request.team.user:
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return HttpResponseForbidden()
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limit = request.team.ping_log_limit
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pings = Ping.objects.filter(owner=check).order_by("-id")[:limit]
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pings = list(pings.iterator())
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# oldest-to-newest order will be more convenient for adding
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# "not received" placeholders:
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pings.reverse()
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# Add a dummy ping object at the end. We iterate over *pairs* of pings
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# and don't want to handle a special case of a check with a single ping.
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pings.append(Ping(created=timezone.now()))
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# Now go through pings, calculate time gaps, and decorate
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# the pings list for convenient use in template
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wrapped = []
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early = False
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for older, newer in pairwise(pings):
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wrapped.append({"ping": older, "early": early})
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# Fill in "missed ping" placeholders:
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expected_date = older.created + check.timeout
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n_blanks = 0
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while expected_date + check.grace < newer.created and n_blanks < 10:
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wrapped.append({"placeholder_date": expected_date})
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expected_date = expected_date + check.timeout
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n_blanks += 1
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# Prepare early flag for next ping to come
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early = older.created + check.timeout > newer.created + check.grace
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reached_limit = len(pings) > limit
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wrapped.reverse()
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ctx = {
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"check": check,
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"pings": wrapped,
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"num_pings": len(pings),
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"limit": limit,
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"show_limit_notice": reached_limit and settings.USE_PAYMENTS
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}
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return render(request, "front/log.html", ctx)
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@login_required
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def channels(request):
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if request.method == "POST":
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code = request.POST["channel"]
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try:
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channel = Channel.objects.get(code=code)
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except Channel.DoesNotExist:
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return HttpResponseBadRequest()
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if channel.user_id != request.team.user.id:
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return HttpResponseForbidden()
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new_checks = []
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for key in request.POST:
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if key.startswith("check-"):
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code = key[6:]
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try:
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check = Check.objects.get(code=code)
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except Check.DoesNotExist:
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return HttpResponseBadRequest()
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if check.user_id != request.team.user.id:
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return HttpResponseForbidden()
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new_checks.append(check)
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channel.checks = new_checks
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return redirect("hc-channels")
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channels = Channel.objects.filter(user=request.team.user).order_by("created")
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channels = channels.annotate(n_checks=Count("checks"))
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num_checks = Check.objects.filter(user=request.team.user).count()
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ctx = {
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"page": "channels",
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"channels": channels,
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"num_checks": num_checks,
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"enable_pushover": settings.PUSHOVER_API_TOKEN is not None,
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}
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return render(request, "front/channels.html", ctx)
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def do_add_channel(request, data):
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form = AddChannelForm(data)
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if form.is_valid():
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channel = form.save(commit=False)
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channel.user = request.team.user
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channel.save()
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channel.assign_all_checks()
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if channel.kind == "email":
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channel.send_verify_link()
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return redirect("hc-channels")
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else:
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return HttpResponseBadRequest()
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@login_required
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def add_channel(request):
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assert request.method == "POST"
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return do_add_channel(request, request.POST)
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@login_required
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@uuid_or_400
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def channel_checks(request, code):
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channel = get_object_or_404(Channel, code=code)
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if channel.user_id != request.team.user.id:
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return HttpResponseForbidden()
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assigned = set(channel.checks.values_list('code', flat=True).distinct())
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checks = Check.objects.filter(user=request.team.user).order_by("created")
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ctx = {
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"checks": checks,
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"assigned": assigned,
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"channel": channel
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}
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return render(request, "front/channel_checks.html", ctx)
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@uuid_or_400
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def verify_email(request, code, token):
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channel = get_object_or_404(Channel, code=code)
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if channel.make_token() == token:
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channel.email_verified = True
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channel.save()
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return render(request, "front/verify_email_success.html")
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return render(request, "bad_link.html")
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@login_required
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@uuid_or_400
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def remove_channel(request, code):
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assert request.method == "POST"
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# user may refresh the page during POST and cause two deletion attempts
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channel = Channel.objects.filter(code=code).first()
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if channel:
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if channel.user != request.team.user:
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return HttpResponseForbidden()
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channel.delete()
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return redirect("hc-channels")
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@login_required
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def add_email(request):
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ctx = {"page": "channels"}
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return render(request, "integrations/add_email.html", ctx)
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@login_required
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def add_webhook(request):
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if request.method == "POST":
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form = AddWebhookForm(request.POST)
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if form.is_valid():
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channel = Channel(user=request.team.user, kind="webhook")
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channel.value = form.get_value()
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channel.save()
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channel.assign_all_checks()
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return redirect("hc-channels")
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else:
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form = AddWebhookForm()
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ctx = {"page": "channels", "form": form}
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return render(request, "integrations/add_webhook.html", ctx)
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@login_required
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def add_pd(request):
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ctx = {"page": "channels"}
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return render(request, "integrations/add_pd.html", ctx)
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@login_required
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def add_slack(request):
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ctx = {"page": "channels"}
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return render(request, "integrations/add_slack.html", ctx)
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@login_required
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def add_hipchat(request):
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ctx = {"page": "channels"}
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return render(request, "integrations/add_hipchat.html", ctx)
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@login_required
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def add_pushover(request):
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if settings.PUSHOVER_API_TOKEN is None or settings.PUSHOVER_SUBSCRIPTION_URL is None:
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return HttpResponseForbidden()
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if request.method == "POST":
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# Initiate the subscription
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nonce = get_random_string()
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request.session["po_nonce"] = nonce
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failure_url = settings.SITE_ROOT + reverse("hc-channels")
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success_url = settings.SITE_ROOT + reverse("hc-add-pushover") + "?" + urlencode({
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"nonce": nonce,
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"prio": request.POST.get("po_priority", "0"),
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})
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subscription_url = settings.PUSHOVER_SUBSCRIPTION_URL + "?" + urlencode({
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"success": success_url,
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"failure": failure_url,
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})
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return redirect(subscription_url)
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# Handle successful subscriptions
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if "pushover_user_key" in request.GET:
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if "nonce" not in request.GET or "prio" not in request.GET:
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return HttpResponseBadRequest()
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# Validate nonce
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if request.GET["nonce"] != request.session.get("po_nonce"):
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return HttpResponseForbidden()
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# Validate priority
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if request.GET["prio"] not in ("-2", "-1", "0", "1", "2"):
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return HttpResponseBadRequest()
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# All looks well--
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del request.session["po_nonce"]
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if request.GET.get("pushover_unsubscribed") == "1":
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# Unsubscription: delete all Pushover channels for this user
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Channel.objects.filter(user=request.user, kind="po").delete()
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return redirect("hc-channels")
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else:
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# Subscription
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user_key = request.GET["pushover_user_key"]
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priority = int(request.GET["prio"])
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return do_add_channel(request, {
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"kind": "po",
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"value": "%s|%d" % (user_key, priority),
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})
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# Show Integration Settings form
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ctx = {
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"page": "channels",
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"po_retry_delay": td(seconds=settings.PUSHOVER_EMERGENCY_RETRY_DELAY),
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"po_expiration": td(seconds=settings.PUSHOVER_EMERGENCY_EXPIRATION),
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}
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return render(request, "integrations/add_pushover.html", ctx)
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@login_required
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def add_victorops(request):
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ctx = {"page": "channels"}
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return render(request, "integrations/add_victorops.html", ctx)
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def privacy(request):
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return render(request, "front/privacy.html", {})
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