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from datetime import timedelta as td
from django.conf import settings
from django.core.urlresolvers import reverse
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseBadRequest, HttpResponseForbidden
from django.shortcuts import get_object_or_404, redirect, render
from django.utils import timezone
from django.utils.six.moves.urllib.parse import urlencode
from django.utils.crypto import get_random_string
from hc.api.decorators import uuid_or_400
from hc.api.models import Channel, Check, Ping
from hc.front.forms import AddChannelForm, TimeoutForm
@login_required
def my_checks(request):
checks = Check.objects.filter(user=request.user).order_by("created")
ctx = {
"page": "checks",
"checks": checks,
"now": timezone.now()
}
return render(request, "front/my_checks.html", ctx)
def index(request):
if request.user.is_authenticated():
return redirect("hc-checks")
check = None
if "welcome_code" in request.session:
code = request.session["welcome_code"]
check = Check.objects.filter(code=code).first()
if check is None:
check = Check()
check.save()
code = str(check.code)
request.session["welcome_code"] = code
ctx = {
"page": "welcome",
"check": check,
"ping_url": check.url()
}
return render(request, "front/welcome.html", ctx)
def docs(request):
if "welcome_code" in request.session:
code = request.session["welcome_code"]
check = Check.objects.get(code=code)
else:
check = Check(code="uuid-goes-here")
ctx = {
"page": "docs",
"ping_endpoint": settings.PING_ENDPOINT,
"check": check,
"ping_url": check.url()
}
return render(request, "front/docs.html", ctx)
def about(request):
return render(request, "front/about.html", {"page": "about"})
@login_required
def add_check(request):
assert request.method == "POST"
check = Check(user=request.user)
check.save()
check.assign_all_channels()
return redirect("hc-checks")
@login_required
@uuid_or_400
def update_name(request, code):
assert request.method == "POST"
check = get_object_or_404(Check, code=code)
if check.user != request.user:
return HttpResponseForbidden()
check.name = request.POST["name"]
check.save()
return redirect("hc-checks")
@login_required
@uuid_or_400
def update_timeout(request, code):
assert request.method == "POST"
check = get_object_or_404(Check, code=code)
if check.user != request.user:
return HttpResponseForbidden()
form = TimeoutForm(request.POST)
if form.is_valid():
check.timeout = td(seconds=form.cleaned_data["timeout"])
check.grace = td(seconds=form.cleaned_data["grace"])
check.save()
return redirect("hc-checks")
@login_required
@uuid_or_400
def email_preview(request, code):
""" A debug view to see how email will look.
Will keep it around until I'm happy with email stying.
"""
check = Check.objects.get(code=code)
if check.user != request.user:
return HttpResponseForbidden()
ctx = {
"check": check,
"checks": check.user.check_set.all(),
"now": timezone.now()
}
return render(request, "emails/alert/body.html", ctx)
@login_required
@uuid_or_400
def remove_check(request, code):
assert request.method == "POST"
check = get_object_or_404(Check, code=code)
if check.user != request.user:
return HttpResponseForbidden()
check.delete()
return redirect("hc-checks")
@login_required
@uuid_or_400
def log(request, code):
check = get_object_or_404(Check, code=code)
if check.user != request.user:
return HttpResponseForbidden()
pings = Ping.objects.filter(owner=check).order_by("-created")[:100]
# Now go through pings, calculate time gaps, and decorate
# the pings list for convenient use in template
wrapped = []
now = timezone.now()
for i, ping in enumerate(pings):
prev = now if i == 0 else pings[i - 1].created
duration = prev - ping.created
if duration > check.timeout:
downtime = {"prev_date": prev, "date": ping.created}
if i > 0:
wrapped[-1]["status"] = "late"
if duration > check.timeout + check.grace:
downtime["down"] = True
if i > 0:
wrapped[-1]["status"] = "down"
wrapped.append(downtime)
wrapped.append({"ping": ping})
ctx = {
"check": check,
"pings": wrapped
}
return render(request, "front/log.html", ctx)
@login_required
def channels(request):
if request.method == "POST":
code = request.POST["channel"]
try:
channel = Channel.objects.get(code=code)
except Channel.DoesNotExist:
return HttpResponseBadRequest()
if channel.user_id != request.user.id:
return HttpResponseForbidden()
new_checks = []
for key in request.POST:
if key.startswith("check-"):
code = key[6:]
try:
check = Check.objects.get(code=code)
except Check.DoesNotExist:
return HttpResponseBadRequest()
if check.user_id != request.user.id:
return HttpResponseForbidden()
new_checks.append(check)
channel.checks = new_checks
return redirect("hc-channels")
channels = Channel.objects.filter(user=request.user).order_by("created")
num_checks = Check.objects.filter(user=request.user).count()
ctx = {
"page": "channels",
"channels": channels,
"num_checks": num_checks,
"enable_pushover": settings.PUSHOVER_API_TOKEN is not None,
}
return render(request, "front/channels.html", ctx)
def do_add_channel(request, data):
form = AddChannelForm(data)
if form.is_valid():
channel = form.save(commit=False)
channel.user = request.user
channel.save()
checks = Check.objects.filter(user=request.user)
channel.checks.add(*checks)
if channel.kind == "email":
channel.send_verify_link()
return redirect("hc-channels")
else:
return HttpResponseBadRequest()
@login_required
def add_channel(request):
assert request.method == "POST"
return do_add_channel(request, request.POST)
@login_required
@uuid_or_400
def channel_checks(request, code):
channel = get_object_or_404(Channel, code=code)
if channel.user_id != request.user.id:
return HttpResponseForbidden()
assigned = set(channel.checks.values_list('code', flat=True).distinct())
checks = Check.objects.filter(user=request.user).order_by("created")
ctx = {
"checks": checks,
"assigned": assigned,
"channel": channel
}
return render(request, "front/channel_checks.html", ctx)
@uuid_or_400
def verify_email(request, code, token):
channel = get_object_or_404(Channel, code=code)
if channel.make_token() == token:
channel.email_verified = True
channel.save()
return render(request, "front/verify_email_success.html")
return render(request, "bad_link.html")
@login_required
@uuid_or_400
def remove_channel(request, code):
assert request.method == "POST"
channel = get_object_or_404(Channel, code=code)
if channel.user != request.user:
return HttpResponseForbidden()
channel.delete()
return redirect("hc-channels")
@login_required
def add_email(request):
ctx = {"page": "channels"}
return render(request, "integrations/add_email.html", ctx)
@login_required
def add_webhook(request):
ctx = {"page": "channels"}
return render(request, "integrations/add_webhook.html", ctx)
@login_required
def add_pd(request):
ctx = {"page": "channels"}
return render(request, "integrations/add_pd.html", ctx)
@login_required
def add_slack(request):
ctx = {"page": "channels"}
return render(request, "integrations/add_slack.html", ctx)
@login_required
def add_hipchat(request):
ctx = {"page": "channels"}
return render(request, "integrations/add_hipchat.html", ctx)
@login_required
def add_pushover(request):
if settings.PUSHOVER_API_TOKEN is None or settings.PUSHOVER_SUBSCRIPTION_URL is None:
return HttpResponseForbidden()
if request.method == "POST":
# Initiate the subscription
nonce = get_random_string()
request.session["po_nonce"] = nonce
failure_url = settings.SITE_ROOT + reverse("hc-channels")
success_url = settings.SITE_ROOT + reverse("hc-add-pushover") + "?" + urlencode({
"nonce": nonce,
"prio": request.POST.get("po_priority", "0"),
})
subscription_url = settings.PUSHOVER_SUBSCRIPTION_URL + "?" + urlencode({
"success": success_url,
"failure": failure_url,
})
return redirect(subscription_url)
# Handle successful subscriptions
if "pushover_user_key" in request.GET:
if "nonce" not in request.GET or "prio" not in request.GET:
return HttpResponseBadRequest()
# Validate nonce
if request.GET["nonce"] != request.session.get("po_nonce"):
return HttpResponseForbidden()
# Validate priority
if request.GET["prio"] not in ("-2", "-1", "0", "1", "2"):
return HttpResponseBadRequest()
# All looks well--
del request.session["po_nonce"]
if request.GET.get("pushover_unsubscribed") == "1":
# Unsubscription: delete all Pushover channels for this user
Channel.objects.filter(user=request.user, kind="po").delete()
return redirect("hc-channels")
else:
# Subscription
user_key = request.GET["pushover_user_key"]
priority = int(request.GET["prio"])
return do_add_channel(request, {
"kind": "po",
"value": "%s|%d" % (user_key, priority),
})
# Show Integration Settings form
ctx = {
"page": "channels",
"po_retry_delay": td(seconds=settings.PUSHOVER_EMERGENCY_RETRY_DELAY),
"po_expiration": td(seconds=settings.PUSHOVER_EMERGENCY_EXPIRATION),
}
return render(request, "integrations/add_pushover.html", ctx)