django-orchestra-test/orchestra/contrib/orchestration/actions.py

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from collections import defaultdict
from django.contrib import messages
from django.contrib.admin import helpers
from django.shortcuts import render
from django.utils.safestring import mark_safe
from django.utils.translation import ungettext, ugettext_lazy as _
from orchestra.admin.utils import get_object_from_url, change_url
from orchestra.contrib.orchestration.helpers import message_user
from orchestra.utils.python import OrderedSet
from . import manager, Operation
from .models import BackendOperation, Route, Server
def retry_backend(modeladmin, request, queryset):
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related_operations = queryset.values_list('operations__id', flat=True).distinct()
related_operations = BackendOperation.objects.filter(pk__in=related_operations)
related_operations = related_operations.select_related('log__server').prefetch_related('instance')
if request.POST.get('post') == 'generic_confirmation':
operations = []
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for operation in related_operations:
if operation.instance:
op = Operation.load(operation)
operations.append(op)
if not operations:
messages.warning(request, _("No backend operation has been executed."))
else:
logs = Operation.execute(operations)
message_user(request, logs)
return
opts = modeladmin.model._meta
display_objects = []
deleted_objects = []
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for op in related_operations:
if not op.instance:
deleted_objects.append(op)
else:
context = {
'backend': op.log.backend,
'action': op.action,
'instance': op.instance,
'instance_url': change_url(op.instance),
'server': op.log.server,
'server_url': change_url(op.log.server),
}
display_objects.append(mark_safe(
'%(backend)s.%(action)s(<a href="%(instance_url)s">%(instance)s</a>) @ <a href="%(server_url)s">%(server)s</a>' % context
))
context = {
'title': _("Are you sure to execute the following backends?"),
'action_name': _('Retry backend'),
'action_value': 'retry_backend',
'display_objects': display_objects,
'deleted_objects': deleted_objects,
'queryset': queryset,
'opts': opts,
'app_label': opts.app_label,
'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
'obj': get_object_from_url(modeladmin, request),
}
return render(request, 'admin/orchestration/backends/retry.html', context)
retry_backend.short_description = _("Retry")
retry_backend.url_name = 'retry'
def orchestrate(modeladmin, request, queryset):
operations = set()
action = Operation.SAVE
operations = OrderedSet()
if queryset.model is Route:
for route in queryset:
routes = [route]
backend = route.backend_class
if action not in backend.actions:
continue
for instance in backend.model_class().objects.all():
if route.matches(instance):
operations.add(Operation(backend, instance, action, routes=routes))
elif queryset.model is Server:
models = set()
for server in queryset:
routes = server.routes.all()
for route in routes.filter(is_active=True):
model = route.backend_class.model_class()
models.add(model)
querysets = [model.objects.order_by('id') for model in models]
route_cache = {}
for model in models:
for instance in model.objects.all():
manager.collect(instance, action, operations=operations, route_cache=route_cache)
routes = []
result = []
for operation in operations:
routes = [route for route in operation.routes if route.host in queryset]
operation.routes = routes
if routes:
result.append(operation)
operations = result
if not operations:
messages.warning(request, _("No operations."))
if request.POST.get('post') == 'generic_confirmation':
logs = Operation.execute(operations)
message_user(request, logs)
return
opts = modeladmin.model._meta
display_objects = {}
for operation in operations:
try:
display_objects[operation.backend].append(operation)
except KeyError:
display_objects[operation.backend] = [operation]
context = {
'title': _("Are you sure to execute the following operations?"),
'action_name': _('Orchestrate'),
'action_value': 'orchestrate',
'display_objects': display_objects,
'queryset': queryset,
'opts': opts,
'app_label': opts.app_label,
'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
'obj': get_object_from_url(modeladmin, request),
}
return render(request, 'admin/orchestration/orchestrate.html', context)