def delete(request):
zoneName = request.REQUEST.get("zonename", "")
regionName = request.REQUEST.get("regionname", "")
comment = request.REQUEST.get("comment", "deleting")
redirectURL = '/cloudman/message/?msg='
groups = request.META.get('ADFS_GROUP','')
groupsList = groups.split(';')
## update operation is allowed for a user if he/she has any one of the following rights
## cloudman resource manager privileges
## or has membership of the admin_group of the region to which this zone belongs to
userIsSuperUser = isSuperUser(groupsList)
if not userIsSuperUser:
userIsAdmin = isAdminForRegion(regionName, groupsList)
if not userIsAdmin:
message = "You neither have membership of administrative group of region " + regionName + " nor possess Cloudman Resource Manager Privileges. Hence you are not authorized to delete Zone";
html = "<html><body> %s.</body></html>" % message
return HttpResponse(html)
## Get the Zone Object
zoneObject = None
try:
zoneObject = Zone.objects.get(name=zoneName, region__name=regionName)
except Zone.DoesNotExist:
failureMessage = "Zone with Name " + zoneName + " in Region " + regionName + " could not be found"
return HttpResponseRedirect(redirectURL+failureMessage)
## check if any top level allocations have been made using this zone
tpAllocNames = TopLevelAllocationByZone.objects.filter(zone__name__iexact = zoneName, zone__region__name__iexact=regionName).values_list('top_level_allocation__name', flat=True).order_by('top_level_allocation__name')
## if yes, alert the user and stop delete operation
finalMessage = ''
tpAllocNamesList = list(tpAllocNames)
if len(tpAllocNamesList) > 0:
finalMessage = finalMessage + "Top Level Allocation Names: " + (', '.join(tpAllocNamesList)) + "<br/>"
if not finalMessage == '':
finalMessage = "Zone with Name " + zoneName + " in Region " + regionName + " Could not be deleted because it is being used in " + "<br/>" + finalMessage
html = "<html><body> %s</body></html>" % finalMessage
return HttpResponse(html)
## finally delete the zone
status = addLog(request,zoneName,comment,zoneObject,None,'zone','delete',False)
## If no allocations are present, then first delete the allowed resource types for this zone
ZoneAllowedResourceType.objects.filter(zone__name__iexact = zoneName, zone__region__name__iexact=regionName).delete()
zoneObject.delete()
if status:
transaction.commit()
message = "Zone with Name " + zoneName + " in Region " + regionName + " deleted successfully "
else:
transaction.rollback()
message = "Error in deleting Zone with Name " + zoneName + " in Region " + regionName
## return a success message to the user
html = "<html><HEAD><meta HTTP-EQUIV=\"REFRESH\" content=\"4; url=/cloudman/zone/list/\"></HEAD><body> %s.</body></html>" % message
return HttpResponse(html)
def update(request):
regionName = request.REQUEST.get("regionname", "")
zoneName = request.REQUEST.get("zonename", "")
redirectURL = '/cloudman/message/?msg='
groups = request.META.get('ADFS_GROUP','')
groupsList = groups.split(';')
## update operation is allowed for a user if he/she has any one of the following rights
## cloudman resource manager privileges
## or has membership of the admin_group of the region to which this zone belongs to
userIsSuperUser = isSuperUser(groupsList)
if not userIsSuperUser:
userIsAdmin = isAdminForRegion(regionName, groupsList)
if not userIsAdmin:
message = "You neither have membership of administrative group of region " + regionName + " nor possess Cloudman Resource Manager Privileges. Hence you are not authorized to Edit Zone";
html = "<html><body> %s.</body></html>" % message
return HttpResponse(html)
## Get the Zone Object
zoneObject = None
try:
zoneObject = Zone.objects.get(name=zoneName, region__name=regionName)
except Zone.DoesNotExist:
failureMessage = "Zone with Name " + zoneName + " in Region " + regionName + " could not be found"
return HttpResponseRedirect(redirectURL+failureMessage)
oldZoneInfo = getZoneInfo(zoneObject)
## if the request is from a update form submission, then try to update the values or else return to
## display the form
if request.method == 'POST':
## Existing values
currRegionName = zoneObject.region.name
currName = zoneObject.name
currDescription = zoneObject.description
currHepSpec = zoneObject.hepspecs
currMemory = zoneObject.memory
currStorage = zoneObject.storage
currBandwidth = zoneObject.bandwidth
currHepspec_overcommit = zoneObject.hepspec_overcommit
currMemory_overcommit = zoneObject.memory_overcommit
currRTList = ZoneAllowedResourceType.objects.filter(zone__name=zoneName, zone__region__name=regionName).values_list('resource_type__name', flat=True)
## new values
newRegionName = request.POST['region']
newName = request.POST['name']
newDescription = request.POST['description']
newHepSpec = request.POST['hepspecs']
newMemory = request.POST['memory']
newStorage = request.POST['storage']
newBandwidth = request.POST['bandwidth']
newHepspec_overcommit = request.POST['hepspec_overcommit']
newMemory_overcommit = request.POST['memory_overcommit']
newRTList = request.POST.getlist('zoneallowedrt')
comment = request.POST['comment']
try:
validate_name(newRegionName)
validate_name(newName)
validate_descr(newDescription)
validate_float(newHepSpec)
validate_float(newMemory)
validate_float(newStorage)
validate_float(newBandwidth)
validate_comment(comment)
except ValidationError as e:
message ='Edit Zone Form '+', '.join(e.messages)
html = "<html><HEAD><meta HTTP-EQUIV=\"REFRESH\" content=\"4; url=/cloudman/zone/list/\"></HEAD><body> %s.</body></html>" % message
return HttpResponse(html)
## validate the new resource parameter values
errorMsg = checkAttributeValues(newHepSpec, newMemory, newStorage, newBandwidth)
if (errorMsg != ''):
return HttpResponseRedirect(redirectURL + errorMsg)
newHepspec_overcommit = float(newHepspec_overcommit)
newMemory_overcommit = float(newMemory_overcommit)
if newHepspec_overcommit < 1:
msgFailure = "Hepspec Over Commit value should be greater than or equal to 1. Hence Edit Zone Operation Stopped"
return HttpResponseRedirect(redirectURL + msgFailure)
if newMemory_overcommit < 1:
msgFailure = "Memory Over Commit value should be greater than or equal to 1. Hence Edit Zone Operation Stopped"
return HttpResponseRedirect(redirectURL + msgFailure)
## check whether any new resource type has been selected or existing resource type is de-selected
rtNotChanged = True;
for newRt in newRTList:
if not newRt in currRTList:
rtNotChanged = False
for oldRt in currRTList:
if not oldRt in newRTList:
rtNotChanged = False
if (newHepSpec == ''):
newHepSpec = None
else:
newHepSpec = round((float(newHepSpec)), 3)
if (newMemory == ''):
newMemory = None
else:
newMemory = round((float(newMemory)), 3)
if (newStorage == ''):
newStorage = None
else:
newStorage = round((float(newStorage)), 3)
if (newBandwidth == ''):
newBandwidth = None
else:
newBandwidth = round((float(newBandwidth)), 3)
## check if atleast one field value has been changed
if ( (currRegionName == newRegionName) and (currName == newName) and (currDescription == newDescription) and (currHepSpec == newHepSpec) and (currMemory == newMemory) and (currStorage == newStorage) and (currBandwidth == newBandwidth) and (currHepspec_overcommit == newHepspec_overcommit) and (currMemory_overcommit == newMemory_overcommit) and (rtNotChanged) ):
message = 'No New Value provided for any field to perform Edit Operation. Hence Edit Zone ' + zoneName + ' in Region ' + regionName + ' aborted'
return HttpResponseRedirect(redirectURL + message)
## if region is changed, then validate it, check if user has either cloudman resource manager privileges
## or new region admin_group membership
## if all is fine, then assign the new region name and get the new Region Object
if (currRegionName != newRegionName):
if newRegionName == '':
errorMsg = 'Region name field cannot be left blank. So Edit Zone operation stopped'
return HttpResponseRedirect(redirectURL + errorMsg)
# do for region
if not userIsSuperUser:
userIsAdmin = isAdminForRegion(newRegionName, groupsList)
if not userIsAdmin:
message = "You neither have membership of administrative group of region " + newRegionName + " nor possess Cloudman Resource Manager Privileges. Hence you are not authorized to shift Zone from Region " + currRegionName + " to Region " + newRegionName;
html = "<html><body> %s.</body></html>" % message
return HttpResponse(html)
regionName = newRegionName
regionObject = None
try:
regionObject = Region.objects.get(name=newRegionName)
except Region.DoesNotExist:
errorMessage = 'No record found for Region with name ' + newRegionName + '. Hence Edit Zone operation stopped'
return HttpResponseRedirect(redirectURL + errorMessage)
zoneObject.region = regionObject
## if zone name is changed, then validate it and assign the new name
if (currName != newName):
if (newName == ''):
errorMsg = 'Name name field cannot be left blank. So Edit Zone operation stopped'
return HttpResponseRedirect(redirectURL + errorMsg)
if (currRegionName != newRegionName):
nameExists = checkNameIgnoreCase(newRegionName, newName)
if nameExists:
msgAlreadyExists = 'Zone ' + newName + ' in Region ' + newRegionName + ' already exists. Hence Edit Zone Operation Stopped'
return HttpResponseRedirect(redirectURL + msgAlreadyExists);
else:
nameExists = checkNameIgnoreCase(currRegionName, newName)
if nameExists:
msgAlreadyExists = 'Zone ' + newName + ' in Region ' + currRegionName + ' already exists. Hence Edit Zone Operation Stopped'
return HttpResponseRedirect(redirectURL + msgAlreadyExists);
zoneObject.name = newName
## check if description is changed and if so, assign the new value
if (currDescription != newDescription):
zoneObject.description = newDescription
if ( (currHepSpec != newHepSpec) or (currMemory != newMemory) or (currStorage != newStorage) or (currBandwidth != newBandwidth) ):
newResourceValues = {'hepspecs': newHepSpec, 'memory': newMemory, 'storage': newStorage, 'bandwidth': newBandwidth, 'hepspec_overcommit': newHepspec_overcommit, 'memory_overcommit': newMemory_overcommit}
## check whether top level allocations of this zone can be met with the new resource values
errorMessage = checkTpLevelAllocations(currName, currRegionName, newResourceValues)
if errorMessage != '':
return HttpResponseRedirect(redirectURL + errorMessage)
## Assign the new resource values if changed
if (currHepSpec != newHepSpec):
zoneObject.hepspecs = newHepSpec
if (currMemory != newMemory):
zoneObject.memory = newMemory
if (currStorage != newStorage):
zoneObject.storage = newStorage
if (currBandwidth != newBandwidth):
zoneObject.bandwidth = newBandwidth
if (currHepspec_overcommit != newHepspec_overcommit):
zoneObject.hepspec_overcommit = newHepspec_overcommit
if (currMemory_overcommit != newMemory_overcommit):
zoneObject.memory_overcommit = newMemory_overcommit
## delete the resouce types which are de-selected
if not rtNotChanged:
for oldRt in currRTList:
if not oldRt in newRTList:
try:
#rtObject = ResourceType.objects.get(name=oldRt)
zrt = ZoneAllowedResourceType.objects.get(resource_type__name=oldRt, zone__name=currName, zone__region__name=currRegionName)
zrt.delete()
except ZoneAllowedResourceType.DoesNotExist:
errorMessage = 'No Record Found for Resource Type ' + oldRt + '. Hence Edit Zone Operation Stopped'
return HttpResponseRedirect(redirectURL + errorMessage)
## Finally save all the zone object changes
zoneObject.save()
# newZoneObj = copy.copy(zoneObject)
## if a new resource type is selected, then add it to the zone allowed resource type table
if not rtNotChanged:
for newRt in newRTList:
if not newRt in currRTList:
try:
rtObject = ResourceType.objects.get(name=newRt)
zrt = ZoneAllowedResourceType(zone=zoneObject, resource_type=rtObject)
zrt.save()
except Exception, err:
errorMessage = "Error in Creating Zone Allowed Resource Type , reason : %s" % str(err)
return HttpResponseRedirect(redirectURL + errorMessage)
#Write The Log
newZoneInfo = getZoneInfo(zoneObject)
objectId = zoneObject.id
if addUpdateLog(request,newName,objectId,comment,oldZoneInfo,newZoneInfo,'zone',True):
transaction.commit()
message = 'Zone ' + zoneName + ' in Region ' + currRegionName + ' Successfully Updated'
else:
transaction.rollback()
message = 'Error in updating Zone ' + zoneName + ' in Region ' + currRegionName
## Finally display a success message to the user
html = "<html><HEAD><meta HTTP-EQUIV=\"REFRESH\" content=\"4; url=/cloudman/zone/list/\"></HEAD><body> %s.</body></html>" % message
return HttpResponse(html)
def addnew(request):
## The add zone function can be used in two ways.
## one way, is to click add new zone from the zone list page.....
## which will display all the regions and create a zone by selecting a region from the list
## second way, is to click add new zone from the region detailed page...
## which means you already selected the region and adding a zone in that region
## that's why the following variable says whether you already selected region or not
selRegionName = request.REQUEST.get("regionname", "")
## Check if there are any regions defined. If not, then zones cannot be added
regionsCount = getRegionCount()
if (regionsCount == 0):
message = "No Regions Defined. First create Region and then try to add Zone"
html = "<html><body> %s.</body></html>" % message
return HttpResponse(html)
## Check if there are any resource types defined. If not, then zones cannot be added
resourceTypesCount = getResourceTypesCount()
if (resourceTypesCount == 0):
message = "No Resource Types Defined. First create Resource Types and then try to add Zone"
html = "<html><body> %s. </body></html>" % message
return HttpResponse(html)
groups = request.META.get('ADFS_GROUP','')
groupsList = groups.split(';')
userIsSuperUser = isSuperUser(groupsList)
## If the request is through form submission, then try to add the region or else display the add form
if request.method == 'POST':
redirectURL = '/cloudman/message/?msg='
regionName = request.POST['region']
zoneName = request.POST['name']
description = request.POST['description']
hepSpecs = request.POST['hepspecs']
memory = request.POST['memory']
storage = request.POST['storage']
bandwidth = request.POST['bandwidth']
hepSpec_overcommit = request.POST['hepspec_overcommit']
memory_overcommit = request.POST['memory_overcommit']
comment = request.POST['comment']
try:
validate_name(regionName)
validate_name(zoneName)
validate_descr(description)
validate_float(hepSpecs)
validate_int(memory)
validate_int(storage)
validate_float(bandwidth)
validate_comment(comment)
validate_float(hepSpec_overcommit)
validate_float(memory_overcommit)
except ValidationError as e:
message ='Add Zone Form '+', '.join(e.messages)
html = "<html><HEAD><meta HTTP-EQUIV=\"REFRESH\" content=\"4; url=/cloudman/zone/list/\"></HEAD><body> %s.</body></html>" % message
return HttpResponse(html)
## check for uniqueness of this zone name in the region
nameExists = checkNameIgnoreCase(regionName, zoneName)
if nameExists:
msgAlreadyExists = 'Zone Name ' + zoneName + ' in Region ' + regionName + ' already exists. Hence Add New Zone Operation Stopped'
transaction.rollback()
return HttpResponseRedirect(redirectURL + msgAlreadyExists)
## check whether user has any of the following rights
## cloudman resource manager privileges
## If not, then has membership of region admin_group
if not userIsSuperUser:
userIsAdminOfRegion = isAdminForRegion(regionName, groupsList)
if not userIsAdminOfRegion:
message = "You neither have membership of administrative group of region " + regionName + " nor possess Cloudman Resource Manager Privileges. Hence you are not authorized to add new Zone";
return HttpResponseRedirect(redirectURL + message)
## Get the Region Object
try:
region = Region.objects.get(name=regionName)
except Region.DoesNotExist:
errorMessage = 'No Record Found for Region ' + regionName + '. Hence Add New Zone Operation Stopped'
return HttpResponseRedirect(redirectURL + errorMessage)
## validate hepspec, memory, storage and bandwidth values
errorMsg = checkAttributeValues(hepSpecs, memory, storage, bandwidth)
if (errorMsg != ''):
return HttpResponseRedirect(redirectURL + errorMsg)
## validate hepspec over commit and memory over commit values
if hepSpec_overcommit < 1:
msgFailure = "Hepspec Over Commit value should be greater than or equal to 1. Hence Add Zone Operation Stopped"
return HttpResponseRedirect(redirectURL + msgFailure)
if memory_overcommit < 1:
msgFailure = "Memory Over Commit value should be greater than or equal to 1. Hence Add Zone Operation Stopped"
return HttpResponseRedirect(redirectURL + msgFailure)
## get all the resource types check boxes values (resource type name),
## the allowed resource types for this zone will be the ones whose checkbox is selected
totalResourceTypes = request.POST['totalresourcetypes']
index = 1
atleastOneRTsel = False
resourceTypesList = []
while index <= int(totalResourceTypes):
if ('resourcetype'+str(index)) in request.POST.keys() :
## if checkbox selected
resourceTypesList.append(request.POST['resourcetype'+str(index)])
atleastOneRTsel = True
index = index + 1
if not atleastOneRTsel:
message = "No Resource Types selected that are allowed for this Zone. Hence Zone Add Operation Stopped"
return HttpResponseRedirect(redirectURL + message)
## get the resource type objects for all those that are selected
resourceTypesFullInfoList = []
msgSuccess = ''
for oneRT in resourceTypesList:
try:
resourceType = ResourceType.objects.get(name=oneRT)
resourceTypesFullInfoList.append(resourceType)
msgSuccess = msgSuccess + ' ' + oneRT;
except ResourceType.DoesNotExist:
errorMessage = 'No Record Found for Resource Type ' + oneRT + '. Hence Add New Zone Operation Stopped'
return HttpResponseRedirect(redirectURL + errorMessage)
msgSuccess = 'New Zone ' + zoneName + ' added successfully ' + ' to Region ' + regionName + '. The allowed Resource Types are ' + msgSuccess
if hepSpecs == '':
hepSpecs = None
else:
hepSpecs = round((float(hepSpecs)), 3)
if memory == '':
memory = None
else:
memory = round((float(memory)), 3)
if storage == '':
storage = None
else:
storage = round((float(storage)), 3)
if bandwidth == '':
bandwidth = None
else:
bandwidth = round((float(bandwidth)), 3)
## create the zone object and save it
newzone = Zone(name=zoneName, description=description, region=region, hepspecs=hepSpecs, memory=memory, storage=storage, bandwidth=bandwidth, hepspec_overcommit=hepSpec_overcommit, memory_overcommit=memory_overcommit)
newzone.save()
## get the newly added zone object
## add the allowed resource types for this zone
addedZone = Zone.objects.get(name=zoneName, region=region)
for oneRT in resourceTypesFullInfoList:
zrt = ZoneAllowedResourceType(zone=addedZone, resource_type=oneRT)
zrt.save()
##Add the Log for Zone
if addLog(request,zoneName,comment,addedZone,None,'zone','add',True):
transaction.commit()
else:
transaction.rollback()
msgSuccess = 'Error in creating new zone' + zoneName
## return the success message to the user
html = "<html><HEAD><meta HTTP-EQUIV=\"REFRESH\" content=\"4; url=/cloudman/zone/list/\"></HEAD><body> %s.</body></html>" % msgSuccess
return HttpResponse(html)
else:
## Zone can be added provided you have any of the following privileges
## cloudman resource manager privileges
## only to regions for which user has membership of its admin_group
if not userIsSuperUser:
userIsAdmin = True
## if region is not already selected, then check user has membership of atleast one region admin_group
if selRegionName == '':
userIsAdmin = isAdminOfAnyRegion(groupsList)
if not userIsAdmin:
message = "You neither have membership of administrative groups of any region nor possess Cloudman Resource Manager Privileges. Hence you are not authorized to add new Zone";
html = "<html><body> %s.</body></html>" % message
return HttpResponse(html)
else:
userIsAdmin = isAdminForRegion(selRegionName, groupsList)
if not userIsAdmin:
message = "You neither have membership of administrative group of region " + selRegionName + " nor possess Cloudman Resource Manager Privileges. Hence you are not authorized to add new Zone";
html = "<html><body> %s.</body></html>" % message
return HttpResponse(html)
form = ZoneForm(userGroups=groupsList, superUserRights=userIsSuperUser)
resourceForm=ResourceForm
resourceType = ResourceType.objects.all()
return render_to_response('zone/addnew.html',locals(),context_instance=RequestContext(request))
