#views.py
+import functools
+import math
import os
import sys
from django.views.generic import TemplateView, View
from pprint import pprint
import json
from core.models import *
-from django.http import HttpResponse
+from operator import attrgetter
+from django.views.decorators.csrf import csrf_exempt
+from django.http import HttpResponse, HttpResponseServerError
from django.core import urlresolvers
+from django.contrib.gis.geoip import GeoIP
+from ipware.ip import get_ip
import traceback
import socket
def get(self, request, **kwargs):
return HttpResponse(json.dumps(getTenantSliceInfo(request.user, True)), mimetype='application/javascript')
-def tenant_increase_slivers(user, siteName, slice, count):
- site = Site.objects.filter(name=siteName)
- nodes = Node.objects.filter(site=site)
- print nodes
- site.usedNodes = []
- site.freeNodes = []
- sliceName = Slice.objects.get(name=slice)
- for node in nodes:
- usedNode = False
- for sliver in node.slivers.all():
- if sliver in Sliver.objects.filter(slice=sliceName):
- usedNode = True
- if usedNode:
- site.usedNodes.append(node)
- print site.usedNodes
- else:
- site.freeNodes.append(node)
- print site
- slices =Slice.objects.all()
- sliceName = Slice.objects.get(name=slice)
- test = Sliver.objects.filter(slice=sliceName)
- while (len(site.freeNodes) > 0) and (count > 0):
- node = site.freeNodes.pop()
- hostname = node.name
- sliver = Sliver(name=node.name,
- slice=sliceName,
- node=node,
- image = Image.objects.all()[0],
- creator = User.objects.get(email=user),
- deploymentNetwork=node.deployment,
- numberCores =1 )
- sliver.save()
-
- print "created sliver", sliver
- print sliver.node
- print sliver.numberCores
- site.usedNodes.append(node)
- count = int(count) - 1
-
-def tenant_decrease_slivers(user, siteName, slice, count):
- site = Site.objects.filter(name=siteName)
- nodes = Node.objects.filter(site=site)
- slices = Slice.objects.all()
- site.usedNodes = []
- site.freeNodes = []
- sliceName = Slice.objects.get(name=slice)
-
- for node in nodes:
- usedNode = False
+ALLOWED_TENANT_SITES = ["Stanford", "Washington", "Princeton", "GeorgiaTech", "MaxPlanck"]
+
+def siteSortKey(site, slice=None, count=None, lat=None, lon=None):
+ # try to pick a site we're already using
+ has_slivers_here=False
+ if slice:
+ for sliver in slice.slivers.all():
+ if sliver.node.site.name == site.name:
+ has_slivers_here=True
+
+ # Haversine method
+ d = 0
+ site_lat = site.location.latitude
+ site_lon = site.location.longitude
+ if lat and lon and site_lat and site_lon:
+ site_lat = float(site_lat)
+ site_lon = float(site_lon)
+ R = 6378.1
+ a = math.sin( math.radians((lat - site_lat)/2.0) )**2 + math.cos( math.radians(lat) )*math.cos( math.radians(site_lat) )*(math.sin( math.radians((lon - site_lon)/2.0 ) )**2)
+ c = 2 * math.atan2( math.sqrt(a), math.sqrt(1 - a) )
+ d = R * c
+
+ return (-has_slivers_here, d)
+
+def tenant_pick_sites(user, user_ip=None, slice=None, count=None):
+ """ Returns list of sites, sorted from most favorable to least favorable """
+ lat=None
+ lon=None
+ try:
+ client_geo = GeoIP().city(user_ip)
+ if client_geo:
+ lat=float(client_geo["latitude"])
+ lon=float(client_geo["longitude"])
+ except:
+ print "exception in geo code"
+ traceback.print_exc()
+
+ sites = Site.objects.all()
+ sites = [x for x in sites if x.name in ALLOWED_TENANT_SITES]
+ sites = sorted(sites, key=functools.partial(siteSortKey, slice=slice, count=count, lat=lat, lon=lon))
+
+ return sites
+
+def tenant_increase_slivers(user, user_ip, siteList, slice, count, noAct=False):
+ sitesChanged = {}
+
+ # let's compute how many slivers are in use in each node of each site
+ for site in siteList:
+ site.nodeList = list(site.nodes.all())
+ for node in site.nodeList:
+ node.sliverCount = 0
for sliver in node.slivers.all():
- if sliver in Sliver.objects.filter(slice=sliceName):
- usedNode = True
- if usedNode:
- site.usedNodes.append(node)
- else:
- site.freeNodes.append(node)
- print "used nodes", site.usedNodes
- slices =Slice.objects.all()
- sliceName = Slice.objects.get(name=slice)
- test = Sliver.objects.filter(slice=sliceName)
- while (count > 0):
- node = site.usedNodes.pop()
- print node
- print count
- for sliver in node.slivers.all():
- if sliver.slice in slices:
- print "deleting sliver", sliver.slice
- sliver.delete()
- site.freeNodes.append(node)
- count = int(count) - 1
- print "deleted sliver", sliver
+ if sliver.slice.name == slice.name:
+ node.sliverCount = node.sliverCount +1
+
+ # Allocate slivers to nodes
+ # for now, assume we want to allocate all slivers from the same site
+ nodes = siteList[0].nodeList
+ while (count>0):
+ # Sort the node list by number of slivers per node, then pick the
+ # node with the least number of slivers.
+ nodes = sorted(nodes, key=attrgetter("sliverCount"))
+ node = nodes[0]
+
+ print "adding sliver at node", node.name, "of site", node.site.name
+
+ if not noAct:
+ sliver = Sliver(name=node.name,
+ slice=slice,
+ node=node,
+ image = Image.objects.all()[0],
+ creator = User.objects.get(email=user),
+ deploymentNetwork=node.deployment,
+ numberCores =1 )
+ sliver.save()
+
+ node.sliverCount = node.sliverCount + 1
+
+ count = count - 1
+
+ sitesChanged[node.site.name] = sitesChanged.get(node.site.name,0) + 1
+
+ return sitesChanged
+
+def tenant_decrease_slivers(user, siteList, slice, count, noAct=False):
+ sitesChanged = {}
+
+ if siteList:
+ siteNames = [site.name for site in siteList]
+ else:
+ siteNames = None
+
+ for sliver in slice.slivers.all():
+ if (count <= 0):
+ break
+
+ node = sliver.node
+ if (not siteNames) or (node.site.name in siteNames):
+ print "deleting sliver", sliver, "at node", node.name, "of site", node.site.name
+ if not noAct:
+ sliver.delete()
+ count = count -1
+
+ sitesChanged[node.site.name] = sitesChanged.get(node.site.name,0) - 1
+
+ return sitesChanged
class TenantAddOrRemoveSliverView(View):
+ """ Add or remove slivers from a Slice
+
+ Arguments:
+ siteName - name of site. If not specified, PlanetStack will pick the
+ best site.,
+ actionToDo - [add | rem]
+ count - number of slivers to add or remove
+ sliceName - name of slice
+ noAct - if set, no changes will be made to db
+
+ Returns:
+ Dictionary of sites that were modified, and the count of nodes
+ that were added or removed at each site.
+ """
def post(self, request, *args, **kwargs):
- siteName = request.POST.get("siteName", "0")
- actionToDo = request.POST.get("actionToDo", "0")
- count = request.POST.get("count","0")
- slice = request.POST.get("slice","0")
+ siteName = request.POST.get("siteName", None)
+ actionToDo = request.POST.get("actionToDo", None)
+ count = int(request.POST.get("count","0"))
+ sliceName = request.POST.get("slice", None)
+ noAct = request.POST.get("noAct", False)
+
+ if not sliceName:
+ return HttpResponseServerError("No slice name given")
+
+ slice = Slice.objects.get(name=sliceName)
+
+ if siteName:
+ siteList = [Site.objects.get(name=siteName)]
+ else:
+ siteList = None
if (actionToDo == "add"):
- tenant_increase_slivers(request.user, siteName,slice, count)
+ user_ip = request.GET.get("ip", get_ip(request))
+ if (siteList is None):
+ siteList = tenant_pick_sites(user, user_ip, slice, count)
+
+ sitesChanged = tenant_increase_slivers(request.user, user_ip, siteList, slice, count, noAct)
elif (actionToDo == "rem"):
- tenant_decrease_slivers(request.user,siteName,slice, count)
- return HttpResponse('This is POST request ')
+ sitesChanged = tenant_decrease_slivers(request.user, siteList, slice, count, noAct)
+ else:
+ return HttpResponseServerError("Unknown actionToDo %s" % actionToDo)
+
+ return HttpResponse(json.dumps(sitesChanged), mimetype='application/javascript')
+
+ def get(self, request, *args, **kwargs):
+ request.POST = request.GET
+ return self.post(request, *args, **kwargs) # for testing REST in browser
+ #return HttpResponseServerError("GET is not supported")
+
+class TenantPickSitesView(View):
+ """ primarily just for testing purposes """
+ def get(self, request, *args, **kwargs):
+ count = request.GET.get("count","0")
+ slice = request.GET.get("slice",None)
+ if slice:
+ slice = Slice.objects.get(name=slice)
+ ip = request.GET.get("ip", get_ip(request))
+ sites = tenant_pick_sites(request.user, user_ip=ip, count=0, slice=slice)
+ sites = [x.name for x in sites]
+ return HttpResponse(json.dumps(sites), mimetype='application/javascript')
class DashboardSummaryAjaxView(View):
def get(self, request, **kwargs):
git://git.onelab.eu / plstackapi.git / commitdiff