from django import forms from django.contrib import admin from django.utils.html import escape from django.utils.translation import ugettext_lazy as _ from orchestra.admin.html import monospace_format from orchestra.admin.utils import admin_link, admin_date, admin_colored from .backends import ServiceBackend from .models import Server, Route, BackendLog, BackendOperation from .widgets import RouteBackendSelect STATE_COLORS = { BackendLog.RECEIVED: 'darkorange', BackendLog.TIMEOUT: 'red', BackendLog.STARTED: 'blue', BackendLog.SUCCESS: 'green', BackendLog.FAILURE: 'red', BackendLog.ERROR: 'red', BackendLog.REVOKED: 'magenta', } class RouteAdmin(admin.ModelAdmin): list_display = [ 'backend', 'host', 'match', 'display_model', 'display_actions', 'is_active' ] list_editable = ['host', 'match', 'is_active'] list_filter = ['host', 'is_active', 'backend'] BACKEND_HELP_TEXT = { backend: "This backend operates over '%s'" % ServiceBackend.get_backend(backend).model for backend, __ in ServiceBackend.get_choices() } DEFAULT_MATCH = { backend.get_name(): backend.default_route_match for backend in ServiceBackend.get_backends(active=False) } def display_model(self, route): try: return escape(route.backend_class.model) except KeyError: return "NOT AVAILABLE" display_model.short_description = _("model") display_model.allow_tags = True def display_actions(self, route): try: return '
'.join(route.backend_class.get_actions()) except KeyError: return "NOT AVAILABLE" display_actions.short_description = _("actions") display_actions.allow_tags = True def formfield_for_dbfield(self, db_field, **kwargs): """ Provides dynamic help text on backend form field """ if db_field.name == 'backend': kwargs['widget'] = RouteBackendSelect('this.id', self.BACKEND_HELP_TEXT, self.DEFAULT_MATCH) return super(RouteAdmin, self).formfield_for_dbfield(db_field, **kwargs) def get_form(self, request, obj=None, **kwargs): """ Include dynamic help text for existing objects """ form = super(RouteAdmin, self).get_form(request, obj, **kwargs) if obj: form.base_fields['backend'].help_text = self.BACKEND_HELP_TEXT.get(obj.backend, '') return form class BackendOperationInline(admin.TabularInline): model = BackendOperation fields = ('action', 'instance_link') readonly_fields = ('action', 'instance_link') extra = 0 can_delete = False class Media: css = { 'all': ('orchestra/css/hide-inline-id.css',) } def instance_link(self, operation): try: return admin_link('instance')(self, operation) except: return _("deleted {0} {1}").format( escape(operation.content_type), escape(operation.object_id) ) instance_link.allow_tags = True instance_link.short_description = _("Instance") def has_add_permission(self, *args, **kwargs): return False def get_queryset(self, request): queryset = super(BackendOperationInline, self).get_queryset(request) return queryset.prefetch_related('instance') def display_mono(field): def display(self, log): return monospace_format(escape(getattr(log, field))) display.short_description = _(field) return display class BackendLogAdmin(admin.ModelAdmin): list_display = ( 'id', 'backend', 'server_link', 'display_state', 'exit_code', 'display_created', 'execution_time', ) list_display_links = ('id', 'backend') list_filter = ('state', 'backend') inlines = [BackendOperationInline] fields = [ 'backend', 'server_link', 'state', 'mono_script', 'mono_stdout', 'mono_stderr', 'mono_traceback', 'exit_code', 'task_id', 'display_created', 'execution_time' ] readonly_fields = fields server_link = admin_link('server') display_created = admin_date('created_at', short_description=_("Created")) display_state = admin_colored('state', colors=STATE_COLORS) mono_script = display_mono('script') mono_stdout = display_mono('stdout') mono_stderr = display_mono('stderr') mono_traceback = display_mono('traceback') def get_queryset(self, request): """ Order by structured name and imporve performance """ qs = super(BackendLogAdmin, self).get_queryset(request) return qs.select_related('server').defer('script', 'stdout') def has_add_permission(self, *args, **kwargs): return False class ServerAdmin(admin.ModelAdmin): list_display = ('name', 'address', 'os') list_filter = ('os',) admin.site.register(Server, ServerAdmin) admin.site.register(BackendLog, BackendLogAdmin) admin.site.register(Route, RouteAdmin)