django-orchestra-test/orchestra/apps/resources/admin.py

160 lines
6.0 KiB
Python

from django.contrib import admin, messages
from django.contrib.contenttypes import generic
from django.utils.functional import cached_property
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
from orchestra.admin import ExtendedModelAdmin
from orchestra.admin.filters import UsedContentTypeFilter
from orchestra.admin.utils import insertattr, get_modeladmin, admin_link, admin_date
from orchestra.core import services
from orchestra.utils import database_ready
from .forms import ResourceForm
from .models import Resource, ResourceData, MonitorData
class ResourceAdmin(ExtendedModelAdmin):
list_display = (
'id', 'verbose_name', 'content_type', 'period', 'on_demand',
'default_allocation', 'unit', 'crontab', 'is_active'
)
list_display_links = ('id', 'verbose_name')
list_editable = ('default_allocation', 'crontab', 'is_active',)
list_filter = (UsedContentTypeFilter, 'period', 'on_demand', 'disable_trigger')
fieldsets = (
(None, {
'fields': ('verbose_name', 'name', 'content_type', 'period'),
}),
(_("Configuration"), {
'fields': ('unit', 'scale', 'on_demand', 'default_allocation', 'disable_trigger',
'is_active'),
}),
(_("Monitoring"), {
'fields': ('monitors', 'crontab'),
}),
)
change_readonly_fields = ('name', 'content_type', 'period')
prepopulated_fields = {'name': ('verbose_name',)}
def add_view(self, request, **kwargs):
""" Warning user if the node is not fully configured """
if request.method == 'POST':
messages.warning(request, mark_safe(_(
"Restarting orchestra and celerybeat is required to fully apply changes.<br> "
"Remember that new allocated values will be applied when objects are saved."
)))
return super(ResourceAdmin, self).add_view(request, **kwargs)
def save_model(self, request, obj, form, change):
super(ResourceAdmin, self).save_model(request, obj, form, change)
model = obj.content_type.model_class()
modeladmin = type(get_modeladmin(model))
resources = obj.content_type.resource_set.filter(is_active=True)
inlines = []
for inline in modeladmin.inlines:
if inline.model is ResourceData:
inline = resource_inline_factory(resources)
inlines.append(inline)
modeladmin.inlines = inlines
def formfield_for_dbfield(self, db_field, **kwargs):
""" filter service content_types """
if db_field.name == 'content_type':
models = [ model._meta.model_name for model in services.get() ]
kwargs['queryset'] = db_field.rel.to.objects.filter(model__in=models)
return super(ResourceAdmin, self).formfield_for_dbfield(db_field, **kwargs)
class ResourceDataAdmin(admin.ModelAdmin):
list_display = (
'id', 'resource_link', 'used', 'allocated', 'updated_at', 'content_object_link'
)
list_filter = ('resource',)
readonly_fields = ('content_object_link',)
resource_link = admin_link('resource')
content_object_link = admin_link('content_object')
def get_queryset(self, request):
queryset = super(ResourceDataAdmin, self).get_queryset(request)
return queryset.prefetch_related('content_object')
class MonitorDataAdmin(admin.ModelAdmin):
list_display = ('id', 'monitor', 'created_at', 'value', 'content_object_link')
list_filter = ('monitor',)
readonly_fields = ('content_object_link',)
content_object_link = admin_link('content_object')
def get_queryset(self, request):
queryset = super(MonitorDataAdmin, self).get_queryset(request)
return queryset.prefetch_related('content_object')
admin.site.register(Resource, ResourceAdmin)
admin.site.register(ResourceData, ResourceDataAdmin)
admin.site.register(MonitorData, MonitorDataAdmin)
# Mokey-patching
def resource_inline_factory(resources):
class ResourceInlineFormSet(generic.BaseGenericInlineFormSet):
def total_form_count(self, resources=resources):
return len(resources)
@cached_property
def forms(self, resources=resources):
forms = []
resources_copy = list(resources)
for i, data in enumerate(self.queryset):
forms.append(self._construct_form(i, resource=data.resource))
resources_copy.remove(data.resource)
for i, resource in enumerate(resources_copy, len(self.queryset)):
forms.append(self._construct_form(i, resource=resource))
return forms
class ResourceInline(generic.GenericTabularInline):
model = ResourceData
verbose_name_plural = _("resources")
form = ResourceForm
formset = ResourceInlineFormSet
can_delete = False
fields = (
'verbose_name', 'used', 'display_updated', 'allocated', 'unit'
)
readonly_fields = ('used', 'display_updated')
class Media:
css = {
'all': ('orchestra/css/hide-inline-id.css',)
}
display_updated = admin_date('updated_at', default=_("Never"))
def has_add_permission(self, *args, **kwargs):
""" Hidde add another """
return False
return ResourceInline
def insert_resource_inlines():
# Clean previous state
for related in Resource._related:
modeladmin = get_modeladmin(related)
modeladmin_class = type(modeladmin)
for inline in getattr(modeladmin_class, 'inlines', []):
if inline.__name__ == 'ResourceInline':
modeladmin_class.inlines.remove(inline)
for ct, resources in Resource.objects.group_by('content_type').iteritems():
inline = resource_inline_factory(resources)
model = ct.model_class()
insertattr(model, 'inlines', inline)
if database_ready():
insert_resource_inlines()