383 lines
14 KiB
Python
383 lines
14 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Hewlett-Packard Development Company, L.P.
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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.import logging
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import logging
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from django.conf import settings # noqa
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from datetime import timedelta
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from django.contrib import messages
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from django.core.urlresolvers import reverse_lazy, reverse # noqa
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from django.shortcuts import redirect
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from django.utils.dateparse import parse_datetime
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from django.utils.translation import ugettext as _ # noqa
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from django.utils.translation import ugettext_lazy
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from django.views.generic import View # noqa
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from django.core.paginator import Paginator, EmptyPage
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from horizon import forms
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from horizon import tables
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from monitoring.alarms import constants
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from monitoring.alarms import forms as alarm_forms
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from monitoring.alarms import tables as alarm_tables
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from monitoring import api
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LOG = logging.getLogger(__name__)
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SERVICES = getattr(settings, 'MONITORING_SERVICES', [])
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LIMIT = 10
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PREV_PAGE_LIMIT = 100
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def get_icon(status):
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if status == 'chicklet-success':
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return constants.OK_ICON
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if status == 'chicklet-error':
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return constants.CRITICAL_ICON
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if status == 'chicklet-warning':
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return constants.WARNING_ICON
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if status == 'chicklet-unknown':
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return constants.UNKNOWN_ICON
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if status == 'chicklet-notfound':
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return constants.NOTFOUND_ICON
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priorities = [
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{'status': 'chicklet-success', 'severity': 'OK'},
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{'status': 'chicklet-unknown', 'severity': 'UNDETERMINED'},
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{'status': 'chicklet-warning', 'severity': 'LOW'},
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{'status': 'chicklet-warning', 'severity': 'MEDIUM'},
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{'status': 'chicklet-warning', 'severity': 'HIGH'},
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{'status': 'chicklet-error', 'severity': 'CRITICAL'},
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]
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index_by_severity = {d['severity']: i for i, d in enumerate(priorities)}
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alarm_history_default_ts_format = 'utc'
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alarm_history_ts_formats = (
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('utc', ugettext_lazy('UTC'),),
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('bl', ugettext_lazy('Browser local'),),
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)
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def get_status(alarms):
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if not alarms:
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return 'chicklet-notfound'
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status_index = 0
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for a in alarms:
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severity = alarm_tables.show_severity(a)
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severity_index = index_by_severity[severity]
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status_index = max(status_index, severity_index)
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return priorities[status_index]['status']
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def generate_status(request):
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try:
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alarms = api.monitor.alarm_list(request)
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except Exception as e:
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messages.error(request,
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_('Unable to list alarms: %s') % str(e))
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alarms = []
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alarms_by_service = {}
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for a in alarms:
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service = alarm_tables.show_service(a)
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service_alarms = alarms_by_service.setdefault(service, [])
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service_alarms.append(a)
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for row in SERVICES:
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row['name'] = unicode(row['name'])
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for service in row['services']:
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service_alarms = alarms_by_service.get(service['name'], [])
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service['class'] = get_status(service_alarms)
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service['icon'] = get_icon(service['class'])
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service['display'] = unicode(service['display'])
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return SERVICES
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class IndexView(View):
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def dispatch(self, request, *args, **kwargs):
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return redirect(constants.URL_PREFIX + 'alarm', service='all')
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class AlarmServiceView(tables.DataTableView):
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table_class = alarm_tables.AlarmsTable
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template_name = constants.TEMPLATE_PREFIX + 'alarm.html'
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def dispatch(self, *args, **kwargs):
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self.service = kwargs['service']
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del kwargs['service']
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return super(AlarmServiceView, self).dispatch(*args, **kwargs)
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def get_data(self):
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page_offset = self.request.GET.get('page_offset')
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contacts = []
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if page_offset == None:
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page_offset = 0
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if self.service == 'all':
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try:
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results = api.monitor.alarm_list(self.request, page_offset,
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LIMIT)
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paginator = Paginator(results, LIMIT)
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contacts = paginator.page(1)
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except EmptyPage:
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contacts = paginator.page(paginator.num_pages)
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except Exception:
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messages.error(self.request, _("Could not retrieve alarms"))
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return contacts
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else:
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if self.service[:2] == 'id':
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try:
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name, value = self.service.split("=")
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results = [api.monitor.alarm_show(self.request, value)]
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except Exception as e:
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messages.error(self.request, _("Could not retrieve alarms"))
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results = []
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print "ERROR"
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print e
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return results
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else:
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try:
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results = api.monitor.alarm_list_by_dimension(self.request,
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self.service,
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page_offset,
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LIMIT)
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except Exception:
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messages.error(self.request, _("Could not retrieve alarms"))
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results = []
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return results
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def get_context_data(self, **kwargs):
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context = super(AlarmServiceView, self).get_context_data(**kwargs)
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results = []
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prev_page_stack = []
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page_offset = self.request.GET.get('page_offset')
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if self.request.session.has_key('prev_page_stack'):
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prev_page_stack = self.request.session['prev_page_stack']
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if page_offset is None:
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page_offset = 0
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prev_page_stack = []
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if self.service == 'all':
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try:
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# To judge whether there is next page, get LIMIT + 1
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results = api.monitor.alarm_list(self.request, page_offset,
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LIMIT + 1)
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num_results = len(results)
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paginator = Paginator(results, LIMIT)
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results = paginator.page(1)
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except EmptyPage:
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results = paginator.page(paginator.num_pages)
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except Exception:
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messages.error(self.request, _("Could not retrieve alarms"))
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else:
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if self.service[:2] == 'id':
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try:
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name, value = self.service.split("=")
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results = [api.monitor.alarm_show(self.request, value)]
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except Exception as e:
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messages.error(self.request, _("Could not retrieve alarms"))
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results = []
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else:
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try:
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# To judge whether there is next page, get LIMIT + 1
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results = api.monitor.alarm_list_by_dimension(self.request,
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self.service,
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page_offset,
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LIMIT + 1)
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num_results = len(results)
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paginator = Paginator(results, LIMIT)
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results = paginator.page(1)
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except EmptyPage:
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results = paginator.page(paginator.num_pages)
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except Exception:
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messages.error(self.request, _("Could not retrieve alarms"))
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results = []
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context["contacts"] = results
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context["service"] = self.service
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if num_results < LIMIT + 1:
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context["page_offset"] = None
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else:
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context["page_offset"] = results[-1]["id"]
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if page_offset in prev_page_stack:
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index = prev_page_stack.index(page_offset)
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prev_page_stack = prev_page_stack[0:index]
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prev_page_offset = prev_page_stack[-1] if prev_page_stack else None
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if prev_page_offset is not None:
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context["prev_page_offset"] = prev_page_offset
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if len(prev_page_stack) > PREV_PAGE_LIMIT:
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del prev_page_stack[0]
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prev_page_stack.append(str(page_offset))
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self.request.session['prev_page_stack'] = prev_page_stack
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return context
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def transform_alarm_history(results, name, ts_mode, ts_offset):
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new_list = []
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def get_ts_val(val):
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if ts_mode == 'bl':
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offset = int((ts_offset or '0').replace('+', ''))
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dt_val = parse_datetime(val) + timedelta(hours=offset)
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dt_val_formatter = dt_val.strftime('%Y-%m-%dT%H:%M:%S.%fZ')
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return dt_val_formatter.replace('000Z', '')
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elif ts_mode != 'utc':
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raise ValueError('%s is not supported timestamp format' % ts_mode)
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else:
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return val # utc case
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for item in results:
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new_list.append({'alarm_id': item['alarm_id'],
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'name': name,
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'old_state': item['old_state'],
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'new_state': item['new_state'],
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'timestamp': get_ts_val(item['timestamp']),
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'reason': item['reason'],
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'metrics': item['metrics'],
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'reason_data': item['reason_data']})
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return new_list
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class AlarmHistoryView(tables.DataTableView):
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table_class = alarm_tables.AlarmHistoryTable
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template_name = constants.TEMPLATE_PREFIX + 'alarm_history.html'
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def dispatch(self, *args, **kwargs):
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return super(AlarmHistoryView, self).dispatch(*args, **kwargs)
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def get_data(self):
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page_offset = self.request.GET.get('page_offset')
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ts_mode = self.request.GET.get('ts_mode')
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ts_offset = self.request.GET.get('ts_offset')
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contacts = []
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object_id = self.kwargs['id']
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name = self.kwargs['name']
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if not ts_mode:
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ts_mode = alarm_history_default_ts_format
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if not page_offset:
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page_offset = 0
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try:
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results = api.monitor.alarm_history(self.request,
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object_id,
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page_offset,
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LIMIT)
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paginator = Paginator(results, LIMIT)
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contacts = paginator.page(1)
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except EmptyPage:
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contacts = paginator.page(paginator.num_pages)
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except Exception:
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messages.error(self.request,
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_("Could not retrieve alarm history for %s") % object_id)
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try:
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return transform_alarm_history(contacts, name, ts_mode, ts_offset)
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except ValueError as err:
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LOG.warning('Failed to transform alarm history due to %s' %
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err.message)
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messages.warning(self.request, _('Failed to present alarm '
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'history'))
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return []
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def get_context_data(self, **kwargs):
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context = super(AlarmHistoryView, self).get_context_data(**kwargs)
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object_id = kwargs['id']
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ts_mode = self.request.GET.get('ts_mode')
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ts_offset = self.request.GET.get('ts_offset')
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try:
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alarm = api.monitor.alarm_get(self.request, object_id)
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except Exception:
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messages.error(self.request,
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_("Could not retrieve alarm for %s") % object_id)
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context['alarm'] = alarm
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contacts = []
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prev_page_stack = []
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page_offset = self.request.GET.get('page_offset')
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if self.request.session.has_key('prev_page_stack'):
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prev_page_stack = self.request.session['prev_page_stack']
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if page_offset is None:
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page_offset = 0
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prev_page_stack = []
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try:
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# To judge whether there is next page, get LIMIT + 1
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results = api.monitor.alarm_history(self.request, object_id, page_offset,
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LIMIT + 1)
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num_results = len(results)
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paginator = Paginator(results, LIMIT)
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contacts = paginator.page(1)
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except EmptyPage:
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contacts = paginator.page(paginator.num_pages)
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except Exception:
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messages.error(self.request,
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_("Could not retrieve alarm history for %s") % object_id)
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return context
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context["contacts"] = contacts
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context['timestamp_formats'] = alarm_history_ts_formats
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context['timestamp_selected'] = ts_mode or ''
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if num_results < LIMIT + 1:
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context["page_offset"] = None
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else:
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context["page_offset"] = contacts.object_list[-1]["id"]
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if page_offset in prev_page_stack:
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index = prev_page_stack.index(page_offset)
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prev_page_stack = prev_page_stack[0:index]
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prev_page_offset = prev_page_stack[-1] if prev_page_stack else None
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if prev_page_offset is not None:
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context["prev_page_offset"] = prev_page_offset
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if len(prev_page_stack) > PREV_PAGE_LIMIT:
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del prev_page_stack[0]
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prev_page_stack.append(str(page_offset))
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self.request.session['prev_page_stack'] = prev_page_stack
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return context
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class AlarmFilterView(forms.ModalFormView):
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template_name = constants.TEMPLATE_PREFIX + 'filter.html'
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form_class = alarm_forms.CreateAlarmForm
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def get_context_data(self, **kwargs):
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context = super(AlarmFilterView, self).get_context_data(**kwargs)
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context["cancel_url"] = self.get_success_url()
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context["action_url"] = reverse(constants.URL_PREFIX + 'alarm_filter',
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args=())
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return context
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def get_success_url(self):
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return reverse_lazy(constants.URL_PREFIX + 'index',
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args=())
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