276 lines
11 KiB
Python
276 lines
11 KiB
Python
from django.conf.urls import patterns, url
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from django.contrib import admin, messages
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from django.contrib.admin.utils import unquote
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from django.contrib import contenttypes
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from django.core.urlresolvers import reverse
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from django.shortcuts import redirect
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from django.utils.functional import cached_property
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from django.utils.translation import ungettext, ugettext, ugettext_lazy as _
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from orchestra.admin import ExtendedModelAdmin
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from orchestra.admin.utils import insertattr, get_modeladmin, admin_link, admin_date
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from orchestra.contrib.orchestration.models import Route
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from orchestra.core import services
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from orchestra.utils import database_ready
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from orchestra.utils.functional import cached
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from .actions import run_monitor
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from .forms import ResourceForm
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from .models import Resource, ResourceData, MonitorData
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class ResourceAdmin(ExtendedModelAdmin):
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list_display = (
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'id', 'verbose_name', 'content_type', 'aggregation', 'on_demand',
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'default_allocation', 'unit', 'crontab', 'is_active'
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)
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list_display_links = ('id', 'verbose_name')
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list_editable = ('default_allocation', 'crontab', 'is_active',)
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list_filter = (
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('content_type', admin.RelatedOnlyFieldListFilter), 'aggregation', 'on_demand',
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'disable_trigger'
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)
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fieldsets = (
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(None, {
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'fields': ('verbose_name', 'name', 'content_type', 'aggregation'),
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}),
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(_("Configuration"), {
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'fields': ('unit', 'scale', 'on_demand', 'default_allocation', 'disable_trigger',
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'is_active'),
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}),
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(_("Monitoring"), {
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'fields': ('monitors', 'crontab'),
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}),
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)
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actions = (run_monitor,)
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change_view_actions = actions
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change_readonly_fields = ('name', 'content_type')
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prepopulated_fields = {'name': ('verbose_name',)}
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list_select_related = ('content_type', 'crontab',)
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def change_view(self, request, object_id, form_url='', extra_context=None):
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""" Remaind user when monitor routes are not configured """
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if request.method == 'GET':
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resource = self.get_object(request, unquote(object_id))
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backends = Route.objects.values_list('backend', flat=True)
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not_routed = []
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for monitor in resource.monitors:
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if monitor not in backends:
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not_routed.append(monitor)
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if not_routed:
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messages.warning(request, ungettext(
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_("%(not_routed)s monitor doesn't have any configured route."),
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_("%(not_routed)s monitors don't have any configured route."),
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len(not_routed),
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) % {
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'not_routed': ', '.join(not_routed)
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})
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return super(ResourceAdmin, self).change_view(request, object_id, form_url=form_url,
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extra_context=extra_context)
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def save_model(self, request, obj, form, change):
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super(ResourceAdmin, self).save_model(request, obj, form, change)
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model = obj.content_type.model_class()
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modeladmin = type(get_modeladmin(model))
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resources = obj.content_type.resource_set.filter(is_active=True)
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inlines = []
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for inline in modeladmin.inlines:
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if inline.model is ResourceData:
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inline = resource_inline_factory(resources)
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inlines.append(inline)
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modeladmin.inlines = inlines
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def formfield_for_dbfield(self, db_field, **kwargs):
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""" filter service content_types """
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if db_field.name == 'content_type':
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models = [ model._meta.model_name for model in services.get() ]
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kwargs['queryset'] = db_field.rel.to.objects.filter(model__in=models)
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return super(ResourceAdmin, self).formfield_for_dbfield(db_field, **kwargs)
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class ResourceDataAdmin(ExtendedModelAdmin):
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list_display = (
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'id', 'resource_link', 'content_object_link', 'allocated', 'display_used', 'display_unit',
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'display_updated'
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)
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list_filter = ('resource',)
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fields = (
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'resource_link', 'content_type', 'content_object_link', 'display_updated', 'display_used',
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'allocated', 'display_unit'
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)
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search_fields = ('object_id',)
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readonly_fields = fields
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actions = (run_monitor,)
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change_view_actions = actions
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ordering = ('-updated_at',)
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list_select_related = ('resource__content_type',)
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list_prefetch_related = ('content_object',)
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resource_link = admin_link('resource')
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content_object_link = admin_link('content_object')
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content_object_link.admin_order_field = None
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display_updated = admin_date('updated_at', short_description=_("Updated"))
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def get_urls(self):
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"""Returns the additional urls for the change view links"""
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urls = super(ResourceDataAdmin, self).get_urls()
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admin_site = self.admin_site
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opts = self.model._meta
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return patterns('',
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url('^(\d+)/used-monitordata/$',
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admin_site.admin_view(self.used_monitordata_view),
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name='%s_%s_used_monitordata' % (opts.app_label, opts.model_name)
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)
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) + urls
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def display_unit(self, data):
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return data.unit
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display_unit.short_description = _("Unit")
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display_unit.admin_order_field = 'resource__unit'
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def display_used(self, data):
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if data.used is None:
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return ''
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url = reverse('admin:resources_resourcedata_used_monitordata', args=(data.pk,))
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return '<a href="%s">%s</a>' % (url, data.used)
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display_used.short_description = _("Used")
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display_used.admin_order_field = 'used'
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display_used.allow_tags = True
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def has_add_permission(self, *args, **kwargs):
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return False
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def used_monitordata_view(self, request, object_id):
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"""
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Does the redirect on a separated view for performance reassons
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(calculate this on a changelist is expensive)
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"""
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data = self.get_object(request, object_id)
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ids = []
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for dataset in data.get_monitor_datasets():
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if isinstance(dataset, MonitorData):
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ids.append(dataset.id)
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else:
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ids += dataset.values_list('id', flat=True)
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url = reverse('admin:resources_monitordata_changelist')
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url += '?id__in=%s' % ','.join(map(str, ids))
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return redirect(url)
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class MonitorDataAdmin(ExtendedModelAdmin):
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list_display = ('id', 'monitor', 'display_created', 'value', 'content_object_link')
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list_filter = ('monitor',)
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add_fields = ('monitor', 'content_type', 'object_id', 'created_at', 'value')
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fields = ('monitor', 'content_type', 'content_object_link', 'display_created', 'value')
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change_readonly_fields = fields
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content_object_link = admin_link('content_object')
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display_created = admin_date('created_at', short_description=_("Created"))
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def get_queryset(self, request):
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queryset = super(MonitorDataAdmin, self).get_queryset(request)
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return queryset.prefetch_related('content_object')
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admin.site.register(Resource, ResourceAdmin)
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admin.site.register(ResourceData, ResourceDataAdmin)
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admin.site.register(MonitorData, MonitorDataAdmin)
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# Mokey-patching
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def resource_inline_factory(resources):
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class ResourceInlineFormSet(contenttype.forms.BaseGenericInlineFormSet):
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def total_form_count(self, resources=resources):
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return len(resources)
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@cached
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def get_queryset(self):
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""" Filter disabled resources """
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queryset = super(ResourceInlineFormSet, self).get_queryset()
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return queryset.filter(resource__is_active=True).select_related('resource')
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@cached_property
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def forms(self, resources=resources):
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forms = []
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resources_copy = list(resources)
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# Remove queryset disabled objects
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queryset = [data for data in self.get_queryset() if data.resource in resources]
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if self.instance.pk:
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# Create missing resource data
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queryset_resources = [data.resource for data in queryset]
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for resource in resources:
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if resource not in queryset_resources:
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kwargs = {
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'content_object': self.instance,
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}
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if resource.default_allocation:
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kwargs['allocated'] = resource.default_allocation
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data = resource.dataset.create(**kwargs)
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queryset.append(data)
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# Existing dataset
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for i, data in enumerate(queryset):
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forms.append(self._construct_form(i, resource=data.resource))
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try:
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resources_copy.remove(data.resource)
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except ValueError:
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pass
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# Missing dataset
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for i, resource in enumerate(resources_copy, len(queryset)):
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forms.append(self._construct_form(i, resource=resource))
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return forms
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class ResourceInline(contenttype.admin.GenericTabularInline):
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model = ResourceData
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verbose_name_plural = _("resources")
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form = ResourceForm
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formset = ResourceInlineFormSet
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can_delete = False
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fields = (
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'verbose_name', 'display_used', 'display_updated', 'allocated', 'unit',
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)
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readonly_fields = ('display_used', 'display_updated')
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class Media:
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css = {
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'all': ('orchestra/css/hide-inline-id.css',)
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}
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display_updated = admin_date('updated_at', default=_("Never"))
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def display_used(self, data):
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update_link = ''
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if data.pk:
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url = reverse('admin:resources_resourcedata_monitor', args=(data.pk,))
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update_link = '<a href="%s"><strong>%s</strong></a>' % (url, ugettext("Update"))
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if data.used is not None:
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return '%s %s %s' % (data.used, data.resource.unit, update_link)
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return _("Unknonw %s") % update_link
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display_used.short_description = _("Used")
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display_used.allow_tags = True
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def has_add_permission(self, *args, **kwargs):
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""" Hidde add another """
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return False
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return ResourceInline
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def insert_resource_inlines():
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# Clean previous state
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for related in Resource._related:
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modeladmin = get_modeladmin(related)
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modeladmin_class = type(modeladmin)
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for inline in getattr(modeladmin_class, 'inlines', []):
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if inline.__name__ == 'ResourceInline':
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modeladmin_class.inlines.remove(inline)
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resources = Resource.objects.filter(is_active=True)
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for ct, resources in resources.group_by('content_type').items():
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inline = resource_inline_factory(resources)
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model = ct.model_class()
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insertattr(model, 'inlines', inline)
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if database_ready():
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insert_resource_inlines()
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