/usr/share/pyshared/djcelery/admin.py is in python-django-celery 2.5.5-2.
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from __future__ import with_statement
from django import forms
from django.conf import settings
from django.contrib import admin
from django.contrib.admin import helpers
from django.contrib.admin.views import main as main_views
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.utils.encoding import force_unicode
from django.utils.html import escape
from django.utils.translation import ugettext_lazy as _
from celery import current_app
from celery import states
from celery import registry
from celery.task.control import broadcast, revoke, rate_limit
from celery.utils import abbrtask
from . import loaders
from .admin_utils import action, display_field, fixedwidth
from .models import (TaskState, WorkerState,
PeriodicTask, IntervalSchedule, CrontabSchedule)
from .humanize import naturaldate
TASK_STATE_COLORS = {states.SUCCESS: "green",
states.FAILURE: "red",
states.REVOKED: "magenta",
states.STARTED: "yellow",
states.RETRY: "orange",
"RECEIVED": "blue"}
NODE_STATE_COLORS = {"ONLINE": "green",
"OFFLINE": "gray"}
class MonitorList(main_views.ChangeList):
def __init__(self, *args, **kwargs):
super(MonitorList, self).__init__(*args, **kwargs)
self.title = self.model_admin.list_page_title
@display_field(_("state"), "state")
def colored_state(task):
state = escape(task.state)
color = TASK_STATE_COLORS.get(task.state, "black")
return """<b><span style="color: %s;">%s</span></b>""" % (color, state)
@display_field(_("state"), "last_heartbeat")
def node_state(node):
state = node.is_alive() and "ONLINE" or "OFFLINE"
color = NODE_STATE_COLORS[state]
return """<b><span style="color: %s;">%s</span></b>""" % (color, state)
@display_field(_("ETA"), "eta")
def eta(task):
if not task.eta:
return """<span style="color: gray;">none</span>"""
return escape(task.eta)
@display_field(_("when"), "tstamp")
def tstamp(task):
return """<div title="%s">%s</div>""" % (escape(str(task.tstamp)),
escape(naturaldate(task.tstamp)))
@display_field(_("name"), "name")
def name(task):
short_name = abbrtask(task.name, 16)
return """<div title="%s"><b>%s</b></div>""" % (escape(task.name),
escape(short_name))
class ModelMonitor(admin.ModelAdmin):
can_add = False
can_delete = False
def get_changelist(self, request, **kwargs):
return MonitorList
def change_view(self, request, object_id, extra_context=None):
extra_context = extra_context or {}
extra_context.setdefault("title", self.detail_title)
return super(ModelMonitor, self).change_view(request, object_id,
extra_context)
def has_delete_permission(self, request, obj=None):
if not self.can_delete:
return False
return super(ModelMonitor, self).has_delete_permission(request, obj)
def has_add_permission(self, request):
if not self.can_add:
return False
return super(ModelMonitor, self).has_add_permission(request)
class TaskMonitor(ModelMonitor):
detail_title = _("Task detail")
list_page_title = _("Tasks")
rate_limit_confirmation_template = "djcelery/confirm_rate_limit.html"
date_hierarchy = "tstamp"
fieldsets = (
(None, {
"fields": ("state", "task_id", "name", "args", "kwargs",
"eta", "runtime", "worker", "tstamp"),
"classes": ("extrapretty", ),
}),
("Details", {
"classes": ("collapse", "extrapretty"),
"fields": ("result", "traceback", "expires"),
}),
)
list_display = (fixedwidth("task_id", name=_("UUID"), pt=8),
colored_state,
name,
fixedwidth("args", pretty=True),
fixedwidth("kwargs", pretty=True),
eta,
tstamp,
"worker")
readonly_fields = ("state", "task_id", "name", "args", "kwargs",
"eta", "runtime", "worker", "result", "traceback",
"expires", "tstamp")
list_filter = ("state", "name", "tstamp", "eta", "worker")
search_fields = ("name", "task_id", "args", "kwargs", "worker__hostname")
actions = ["revoke_tasks",
"terminate_tasks",
"kill_tasks",
"rate_limit_tasks"]
@action(_("Revoke selected tasks"))
def revoke_tasks(self, request, queryset):
with current_app.default_connection() as connection:
for state in queryset:
revoke(state.task_id, connection=connection)
@action(_("Terminate selected tasks"))
def terminate_tasks(self, request, queryset):
with current_app.default_connection() as connection:
for state in queryset:
revoke(state.task_id, connection=connection, terminate=True)
@action(_("Kill selected tasks"))
def kill_tasks(self, request, queryset):
with current_app.default_connection() as connection:
for state in queryset:
revoke(state.task_id, connection=connection,
terminate=True, signal="KILL")
@action(_("Rate limit selected tasks"))
def rate_limit_tasks(self, request, queryset):
tasks = set([task.name for task in queryset])
opts = self.model._meta
app_label = opts.app_label
if request.POST.get("post"):
rate = request.POST["rate_limit"]
with current_app.default_connection() as connection:
for task_name in tasks:
rate_limit(task_name, rate, connection=connection)
return None
context = {
"title": _("Rate limit selection"),
"queryset": queryset,
"object_name": force_unicode(opts.verbose_name),
"action_checkbox_name": helpers.ACTION_CHECKBOX_NAME,
"opts": opts,
"app_label": app_label,
}
return render_to_response(self.rate_limit_confirmation_template,
context, context_instance=RequestContext(request))
def get_actions(self, request):
actions = super(TaskMonitor, self).get_actions(request)
actions.pop("delete_selected", None)
return actions
def queryset(self, request):
qs = super(TaskMonitor, self).queryset(request)
return qs.select_related('worker')
class WorkerMonitor(ModelMonitor):
can_add = True
detail_title = _("Node detail")
list_page_title = _("Worker Nodes")
list_display = ("hostname", node_state)
readonly_fields = ("last_heartbeat", )
actions = ["shutdown_nodes",
"enable_events",
"disable_events"]
@action(_("Shutdown selected worker nodes"))
def shutdown_nodes(self, request, queryset):
broadcast("shutdown", destination=[n.hostname for n in queryset])
@action(_("Enable event mode for selected nodes."))
def enable_events(self, request, queryset):
broadcast("enable_events",
destination=[n.hostname for n in queryset])
@action(_("Disable event mode for selected nodes."))
def disable_events(self, request, queryset):
broadcast("disable_events",
destination=[n.hostname for n in queryset])
def get_actions(self, request):
actions = super(WorkerMonitor, self).get_actions(request)
actions.pop("delete_selected", None)
return actions
admin.site.register(TaskState, TaskMonitor)
admin.site.register(WorkerState, WorkerMonitor)
# ### Periodic Tasks
class LaxChoiceField(forms.ChoiceField):
def valid_value(self, value):
return True
def periodic_task_form():
loaders.autodiscover()
tasks = list(sorted(registry.tasks.regular().keys()))
choices = (("", ""), ) + tuple(zip(tasks, tasks))
class PeriodicTaskForm(forms.ModelForm):
regtask = LaxChoiceField(label=_(u"Task (registered)"),
choices=choices, required=False)
task = forms.CharField(label=_("Task (custom)"), required=False,
max_length=200)
class Meta:
model = PeriodicTask
def clean(self):
data = super(PeriodicTaskForm, self).clean()
regtask = data.get("regtask")
if regtask:
data["task"] = regtask
if not data["task"]:
exc = forms.ValidationError(_(u"Need name of task"))
self._errors["task"] = self.error_class(exc.messages)
raise exc
return data
return PeriodicTaskForm
class PeriodicTaskAdmin(admin.ModelAdmin):
model = PeriodicTask
form = periodic_task_form()
list_display = ('__unicode__', 'enabled')
fieldsets = (
(None, {
"fields": ("name", "regtask", "task", "enabled"),
"classes": ("extrapretty", "wide"),
}),
("Schedule", {
"fields": ("interval", "crontab"),
"classes": ("extrapretty", "wide", ),
}),
("Arguments", {
"fields": ("args", "kwargs"),
"classes": ("extrapretty", "wide", "collapse"),
}),
("Execution Options", {
"fields": ("expires", "queue", "exchange", "routing_key"),
"classes": ("extrapretty", "wide", "collapse"),
}),
)
def __init__(self, *args, **kwargs):
super(PeriodicTaskAdmin, self).__init__(*args, **kwargs)
self.form = periodic_task_form()
def changelist_view(self, request, extra_context=None):
extra_context = extra_context or {}
scheduler = getattr(settings, "CELERYBEAT_SCHEDULER", None)
if scheduler != 'djcelery.schedulers.DatabaseScheduler':
extra_context['wrong_scheduler'] = True
return super(PeriodicTaskAdmin, self).changelist_view(request,
extra_context)
def queryset(self, request):
qs = super(PeriodicTaskAdmin, self).queryset(request)
return qs.select_related('interval', 'crontab')
admin.site.register(IntervalSchedule)
admin.site.register(CrontabSchedule)
admin.site.register(PeriodicTask, PeriodicTaskAdmin)
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