from django.contrib import admin
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from django.core.paginator import Paginator
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from django.db import connection
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from hc.api.models import Channel, Check, Notification, Ping
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from hc.lib.date import format_duration
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class OwnershipListFilter(admin.SimpleListFilter):
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title = "Ownership"
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parameter_name = 'ownership'
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def lookups(self, request, model_admin):
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return (
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('assigned', "Assigned"),
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)
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def queryset(self, request, queryset):
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if self.value() == 'assigned':
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return queryset.filter(user__isnull=False)
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return queryset
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@admin.register(Check)
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class ChecksAdmin(admin.ModelAdmin):
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class Media:
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css = {
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'all': ('css/admin/checks.css',)
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}
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search_fields = ["name", "user__email", "code"]
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list_display = ("id", "name_tags", "created", "code", "timeout_schedule",
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"status", "email", "last_ping", "n_pings")
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list_select_related = ("user", )
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list_filter = ("status", OwnershipListFilter, "kind", "last_ping")
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actions = ["send_alert"]
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def email(self, obj):
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return obj.user.email if obj.user else None
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def name_tags(self, obj):
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if not obj.tags:
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return obj.name
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return "%s [%s]" % (obj.name, obj.tags)
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def timeout_schedule(self, obj):
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if obj.kind == "simple":
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return format_duration(obj.timeout)
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elif obj.kind == "cron":
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return obj.schedule
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else:
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return "Unknown"
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timeout_schedule.short_description = "Schedule"
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def send_alert(self, request, qs):
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for check in qs:
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check.send_alert()
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self.message_user(request, "%d alert(s) sent" % qs.count())
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send_alert.short_description = "Send Alert"
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class SchemeListFilter(admin.SimpleListFilter):
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title = "Scheme"
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parameter_name = 'scheme'
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def lookups(self, request, model_admin):
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return (
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('http', "HTTP"),
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('https', "HTTPS"),
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('email', "Email"),
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)
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def queryset(self, request, queryset):
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if self.value():
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queryset = queryset.filter(scheme=self.value())
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return queryset
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class MethodListFilter(admin.SimpleListFilter):
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title = "Method"
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parameter_name = 'method'
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methods = ["HEAD", "GET", "POST", "PUT", "DELETE"]
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def lookups(self, request, model_admin):
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return zip(self.methods, self.methods)
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def queryset(self, request, queryset):
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if self.value():
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queryset = queryset.filter(method=self.value())
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return queryset
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# Adapted from: https://djangosnippets.org/snippets/2593/
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class LargeTablePaginator(Paginator):
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""" Overrides the count method to get an estimate instead of actual count
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when not filtered
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"""
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def _get_estimate(self):
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try:
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cursor = connection.cursor()
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cursor.execute("SELECT reltuples FROM pg_class WHERE relname = %s",
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[self.object_list.query.model._meta.db_table])
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return int(cursor.fetchone()[0])
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except:
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return 0
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def _get_count(self):
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"""
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Changed to use an estimate if the estimate is greater than 10,000
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Returns the total number of objects, across all pages.
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"""
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if not hasattr(self, "_count") or self._count is None:
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try:
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estimate = 0
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if not self.object_list.query.where:
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estimate = self._get_estimate()
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if estimate < 10000:
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self._count = self.object_list.count()
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else:
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self._count = estimate
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except (AttributeError, TypeError):
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# AttributeError if object_list has no count() method.
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# TypeError if object_list.count() requires arguments
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# (i.e. is of type list).
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self._count = len(self.object_list)
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return self._count
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count = property(_get_count)
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@admin.register(Ping)
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class PingsAdmin(admin.ModelAdmin):
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search_fields = ("owner__name", "owner__code", "owner__user__email")
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list_select_related = ("owner", "owner__user")
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list_display = ("id", "created", "check_name", "email", "scheme", "method",
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"ua")
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list_filter = ("created", SchemeListFilter, MethodListFilter)
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paginator = LargeTablePaginator
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def check_name(self, obj):
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return obj.owner.name if obj.owner.name else obj.owner.code
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def email(self, obj):
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return obj.owner.user.email if obj.owner.user else None
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@admin.register(Channel)
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class ChannelsAdmin(admin.ModelAdmin):
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class Media:
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css = {
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'all': ('css/admin/channels.css',)
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}
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search_fields = ["value", "user__email"]
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list_select_related = ("user", )
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list_display = ("id", "code", "email", "formatted_kind", "value",
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"num_notifications")
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list_filter = ("kind", )
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def email(self, obj):
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return obj.user.email if obj.user else None
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def formatted_kind(self, obj):
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if obj.kind == "email" and not obj.email_verified:
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return "Email <i>(unverified)</i>"
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return obj.get_kind_display()
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formatted_kind.short_description = "Kind"
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formatted_kind.allow_tags = True
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def num_notifications(self, obj):
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return Notification.objects.filter(channel=obj).count()
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num_notifications.short_description = "# Notifications"
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@admin.register(Notification)
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class NotificationsAdmin(admin.ModelAdmin):
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search_fields = ["owner__name", "owner__code", "channel__value"]
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list_select_related = ("owner", "channel")
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list_display = ("id", "created", "check_status", "check_name",
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"channel_kind", "channel_value")
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list_filter = ("created", "check_status", "channel__kind")
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def check_name(self, obj):
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return obj.owner.name_then_code()
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def channel_kind(self, obj):
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return obj.channel.kind
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def channel_value(self, obj):
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return obj.channel.value
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