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

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from django.contrib import admin, messages
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from django.contrib.contenttypes import generic
from django.utils.functional import cached_property
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from django.utils.html import escape
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from django.utils.translation import ugettext_lazy as _
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from djcelery.humanize import naturaldate
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from orchestra.admin import ExtendedModelAdmin
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from orchestra.admin.filters import UsedContentTypeFilter
from orchestra.admin.utils import insertattr, get_modeladmin
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from orchestra.core import services
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from orchestra.utils import running_syncdb
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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 = (
'name', 'verbose_name', 'content_type', 'period', 'ondemand',
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'default_allocation', 'disable_trigger', 'crontab',
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)
list_filter = (UsedContentTypeFilter, 'period', 'ondemand', 'disable_trigger')
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fieldsets = (
(None, {
'fields': ('name', 'content_type', 'period'),
}),
(_("Configuration"), {
'fields': ('verbose_name', 'default_allocation', 'ondemand',
'disable_trigger', 'is_active'),
}),
(_("Monitoring"), {
'fields': ('monitors', 'crontab'),
}),
)
change_readonly_fields = ('name', 'content_type', 'period')
def add_view(self, request, **kwargs):
""" Warning user if the node is not fully configured """
if request.method == 'GET':
messages.warning(request, _(
"Restarting orchestra and celery is required to fully apply changes. "
"Remember that allocated values will be applied when objects are saved"
))
return super(ResourceAdmin, self).add_view(request, **kwargs)
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def save_model(self, request, obj, form, change):
super(ResourceAdmin, self).save_model(request, obj, form, change)
model = obj.content_type.model_class()
modeladmin = get_modeladmin(model)
resources = obj.content_type.resource_set.filter(is_active=True)
inlines = []
for inline in modeladmin.inlines:
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if inline.model is ResourceData:
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inline = resource_inline_factory(resources)
inlines.append(inline)
modeladmin.inlines = inlines
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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().keys() ]
kwargs['queryset'] = db_field.rel.to.objects.filter(model__in=models)
return super(ResourceAdmin, self).formfield_for_dbfield(db_field, **kwargs)
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class ResourceDataAdmin(admin.ModelAdmin):
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list_display = ('id', 'resource', 'used', 'allocated', 'last_update', 'content_type') # TODO content_object
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list_filter = ('resource',)
class MonitorDataAdmin(admin.ModelAdmin):
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list_display = ('id', 'monitor', 'date', 'value', 'ct', 'object_id') # TODO content_object
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list_filter = ('monitor',)
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def ct(self, i):
return i.content_type_id
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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)
# Mokey-patching
def resource_inline_factory(resources):
class ResourceInlineFormSet(generic.BaseGenericInlineFormSet):
def total_form_count(self):
return len(resources)
@cached_property
def forms(self):
forms = []
for i, resource in enumerate(resources):
forms.append(self._construct_form(i, resource=resource))
return forms
class ResourceInline(generic.GenericTabularInline):
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model = ResourceData
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verbose_name_plural = _("resources")
form = ResourceForm
formset = ResourceInlineFormSet
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can_delete = False
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fields = ('verbose_name', 'used', 'display_last_update', 'allocated',)
readonly_fields = ('used', 'display_last_update',)
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class Media:
css = {
'all': ('orchestra/css/hide-inline-id.css',)
}
def has_add_permission(self, *args, **kwargs):
""" Hidde add another """
return False
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def display_last_update(self, log):
return '<div title="{0}">{1}</div>'.format(
escape(str(log.last_update)), escape(naturaldate(log.last_update)),
)
display_last_update.short_description = _("last update")
display_last_update.allow_tags = True
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return ResourceInline
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if not running_syncdb():
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# not run during syncdb
for resources in Resource.group_by_content_type():
inline = resource_inline_factory(resources)
model = resources[0].content_type.model_class()
insertattr(model, 'inlines', inline)