229 lines
8.5 KiB
Python
229 lines
8.5 KiB
Python
# Copyright 2016 FUJITSU LIMITED
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from django.utils.translation import ugettext_lazy as _ # noqa
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from django.views.decorators.debug import sensitive_variables
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from horizon import exceptions
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from horizon import forms
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from horizon.utils import memoized
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from horizon import workflows
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from monitoring.alarmdefs import constants
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from monitoring.alarmdefs import forms as ad_forms
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from monitoring import api
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class SetAlarmNotificationsAction(workflows.Action):
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notifications = ad_forms.NotificationField(
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label=_('Notifications'),
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required=False,
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widget=ad_forms.NotificationCreateWidget(),
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help_text=_('Notification methods. '
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'Notifications can be sent when an alarm '
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'state transition occurs.'))
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alarm_actions = ad_forms.NotificationField(
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label=_("Alarm Actions"),
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required=False,
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widget=forms.MultipleHiddenInput()
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)
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ok_actions = ad_forms.NotificationField(
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label=_("OK Actions"),
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required=False,
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widget=forms.MultipleHiddenInput()
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)
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undetermined_actions = ad_forms.NotificationField(
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label=_("Undetermined Actions"),
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required=False,
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widget=forms.MultipleHiddenInput()
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)
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class Meta(object):
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name = _('Notifications')
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help_text_template = ("monitoring/alarmdefs/"
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"_create_ad_notification_help.html")
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def __init__(self, request, context, *args, **kwargs):
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super(SetAlarmNotificationsAction, self).__init__(
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request, context, *args, **kwargs
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)
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try:
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notifications = ad_forms._get_notifications(request)
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self.fields['notifications'].choices = notifications
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except Exception as e:
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exceptions.handle(request,
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_('Unable to retrieve notifications: %s') % e)
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_SEVERITY_CHOICES = [("LOW", _("Low")),
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("MEDIUM", _("Medium")),
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("HIGH", _("High")),
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("CRITICAL", _("Critical"))]
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class SetAlarmDefinitionAction(workflows.Action):
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name = forms.CharField(label=_('Name'),
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required=True,
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max_length=250,
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help_text=_('An unique name of the alarm.'))
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description = forms.CharField(label=_('Description'),
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required=False,
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help_text=_('A description of an alarm.'))
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severity = forms.ChoiceField(label=_('Severity'),
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choices=_SEVERITY_CHOICES,
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initial=_SEVERITY_CHOICES[0],
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widget=forms.SelectWidget,
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required=False,
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help_text=_('Severity of an alarm. Must be '
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'either LOW, MEDIUM, HIGH '
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'or CRITICAL. Default is LOW.'))
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class Meta(object):
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name = _('Details')
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help_text_template = ("monitoring/alarmdefs/"
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"_create_ad_details_help.html")
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def clean(self):
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cleaned_data = super(SetAlarmDefinitionAction, self).clean()
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alarm_def_name = cleaned_data.get('name', '').strip()
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if not alarm_def_name:
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return
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is_name_valid = self._is_alarm_def_name_unique_validator(
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alarm_def_name)
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if not is_name_valid:
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self.add_error('name',
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_('Alarm definition with %s name already exists')
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% alarm_def_name)
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def _is_alarm_def_name_unique_validator(self, value):
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try:
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ret = self._get_alarm_def_by_name(value)
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return not (ret and len(ret))
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except Exception:
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exceptions.handle(request=self.request,
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message=_('Failed to validate name'),
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ignore=True)
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return True
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@memoized.memoized_method
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def _get_alarm_def_by_name(self, value):
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return api.monitor.alarmdef_get_by_name(self.request, value)
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class SetAlarmDefinitionExpressionAction(workflows.Action):
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expression = ad_forms.ExpressionField(label=_("Expression"),
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required=True,
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widget=ad_forms.ExpressionWidget(''),
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help_text=_(
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'An alarm expression.'))
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match_by = forms.CharField(label=_('Match by'),
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required=False,
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widget=ad_forms.MatchByWidget(''),
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help_text=_('The metric dimensions used '
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'to create unique alarms.'))
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class Meta(object):
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name = _('Expression')
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help_text_template = ("monitoring/alarmdefs/"
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"_create_ad_expression_help.html")
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def __init__(self, request, context, *args, **kwargs):
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super(SetAlarmDefinitionExpressionAction, self).__init__(request,
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context,
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*args,
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**kwargs)
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try:
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self.fields['expression'].metrics = ad_forms._get_metrics(request)
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except Exception:
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exceptions.handle(request, _('Unable to retrieve metrics'))
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class SetDetailsStep(workflows.Step):
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action_class = SetAlarmDefinitionAction
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contributes = ('name', 'description', 'severity')
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template_name = 'monitoring/alarmdefs/workflow_step.html'
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class SetExpressionStep(workflows.Step):
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action_class = SetAlarmDefinitionExpressionAction
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contributes = ('expression', 'match_by')
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template_name = 'monitoring/alarmdefs/workflow_step.html'
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def contribute(self, data, context):
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context = (super(SetExpressionStep, self)
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.contribute(data, context))
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if 'expression' in data and data['expression']:
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context['expression'] = data['expression'].strip()
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if 'match_by' in data and data['match_by']:
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context['match_by'] = context['match_by'].split(',')
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else:
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context['match_by'] = []
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return context
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class SetNotificationsStep(workflows.Step):
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action_class = SetAlarmNotificationsAction
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contributes = ('alarm_actions', 'ok_actions', 'undetermined_actions')
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template_name = 'monitoring/alarmdefs/workflow_step.html'
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class AlarmDefinitionWorkflow(workflows.Workflow):
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slug = 'create_alarm_definition'
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name = _('Create Alarm Definition')
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finalize_button_name = _('Create Alarm Definition')
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success_message = _('Alarm definition %s has been created')
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failure_message = _('Unable to create alarm definition %s')
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success_url = constants.URL_PREFIX + 'index'
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wizard = True
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default_steps = (
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SetDetailsStep,
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SetExpressionStep,
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SetNotificationsStep
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)
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def format_status_message(self, message):
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name = self.context.get('name', _('Unknown name'))
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return message % name
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@sensitive_variables('alarm_actions',
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'ok_actions',
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'undetermined_actions')
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def handle(self, request, context):
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try:
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api.monitor.alarmdef_create(
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request,
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name=context['name'],
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expression=context['expression'],
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description=context['description'],
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severity=context['severity'],
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match_by=context['match_by'],
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alarm_actions=context['alarm_actions'],
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ok_actions=context['ok_actions'],
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undetermined_actions=context['undetermined_actions'],
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)
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except Exception as e:
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exceptions.handle(request, e, escalate=True)
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return False
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return True
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