grafana/docker/blocks/graphite/files/events_views.py

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2015-01-08 10:34:41 -06:00
import datetime
import time
from django.utils.timezone import get_current_timezone
from django.core.urlresolvers import get_script_prefix
from django.http import HttpResponse
from django.shortcuts import render_to_response, get_object_or_404
from pytz import timezone
from graphite.util import json
from graphite.events import models
from graphite.render.attime import parseATTime
def to_timestamp(dt):
return time.mktime(dt.timetuple())
class EventEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, datetime.datetime):
return to_timestamp(obj)
return json.JSONEncoder.default(self, obj)
def view_events(request):
if request.method == "GET":
context = { 'events' : fetch(request),
'slash' : get_script_prefix()
}
return render_to_response("events.html", context)
else:
return post_event(request)
def detail(request, event_id):
e = get_object_or_404(models.Event, pk=event_id)
context = { 'event' : e,
'slash' : get_script_prefix()
}
return render_to_response("event.html", context)
def post_event(request):
if request.method == 'POST':
event = json.loads(request.body)
assert isinstance(event, dict)
values = {}
values["what"] = event["what"]
values["tags"] = event.get("tags", None)
values["when"] = datetime.datetime.fromtimestamp(
event.get("when", time.time()))
if "data" in event:
values["data"] = event["data"]
e = models.Event(**values)
e.save()
return HttpResponse(status=200)
else:
return HttpResponse(status=405)
def get_data(request):
if 'jsonp' in request.REQUEST:
response = HttpResponse(
"%s(%s)" % (request.REQUEST.get('jsonp'),
json.dumps(fetch(request), cls=EventEncoder)),
mimetype='text/javascript')
else:
response = HttpResponse(
json.dumps(fetch(request), cls=EventEncoder),
mimetype="application/json")
return response
def fetch(request):
#XXX we need to move to USE_TZ=True to get rid of naive-time conversions
def make_naive(dt):
if 'tz' in request.GET:
tz = timezone(request.GET['tz'])
else:
tz = get_current_timezone()
local_dt = dt.astimezone(tz)
if hasattr(local_dt, 'normalize'):
local_dt = local_dt.normalize()
return local_dt.replace(tzinfo=None)
if request.GET.get("from", None) is not None:
time_from = make_naive(parseATTime(request.GET["from"]))
else:
time_from = datetime.datetime.fromtimestamp(0)
if request.GET.get("until", None) is not None:
time_until = make_naive(parseATTime(request.GET["until"]))
else:
time_until = datetime.datetime.now()
tags = request.GET.get("tags", None)
if tags is not None:
tags = request.GET.get("tags").split(" ")
return [x.as_dict() for x in
models.Event.find_events(time_from, time_until, tags=tags)]