class RuleAnnotation(models.Model): name = models.CharField(max_length=128) value = models.TextField() rule = models.ForeignKey('Rule', on_delete=models.CASCADE)
class RuleLabel(models.Model): name = models.CharField(max_length=128) value = models.CharField(max_length=128) rule = models.ForeignKey('Rule', on_delete=models.CASCADE)
class Rule(DynamicParent): name = models.CharField(max_length=128, unique=True, validators=[validators.alphanumeric]) clause = models.TextField(help_text='Prometheus query') duration = models.CharField( max_length=128, validators=[validators.prometheusduration], help_text="Duration field with postfix. Example 30s, 5m, 1d" ) enabled = models.BooleanField(default=True) parent = models.ForeignKey( 'Rule', null=True, related_name='overrides', on_delete=models.SET_NULL ) content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE, limit_choices_to=( models.Q(app_label='sites', model='site') | models.Q(app_label='promgen', model='project') | models.Q(app_label='promgen', model='service')) ) object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') description = models.TextField(blank=True) class Meta: ordering = ['content_type', 'object_id', 'name'] @cached_property def labels(self): return {obj.name: obj.value for obj in self.rulelabel_set.all()} def add_label(self, name, value): return RuleLabel.objects.get_or_create(rule=self, name=name, value=value) def add_annotation(self, name, value): return RuleAnnotation.objects.get_or_create(rule=self, name=name, value=value) @cached_property def annotations(self): _annotations = {obj.name: obj.value for obj in self.ruleannotation_set.all()} # Skip when pk is not set, such as when test rendering a rule if self.pk and 'rule' not in _annotations: _annotations['rule'] = resolve_domain('rule-edit', pk=self.pk) return _annotations def __str__(self): return '{} [{}]'.format(self.name, self.content_object.name) def get_absolute_url(self): return reverse('rule-edit', kwargs={'pk': self.pk}) def set_object(self, content_type, object_id): self.content_type = ContentType.objects.get( model=content_type, app_label='promgen' ) self.object_id = object_id def copy_to(self, content_type, object_id): ''' Make a copy under a new service It's important that we set pk to None so a new object is created, but we also need to ensure the new name is unique by appending some unique data to the end of the name ''' with transaction.atomic(): content_type = ContentType.objects.get(model=content_type, app_label='promgen') # First check to see if this rule is already overwritten for rule in Rule.objects.filter(parent_id=self.pk, content_type=content_type, object_id=object_id): return rule content_object = content_type.get_object_for_this_type(pk=object_id) orig_pk = self.pk self.pk = None self.parent_id = orig_pk self.name = '{}_{}'.format(self.name, slugify(content_object.name)).replace('-', '_') self.content_type = content_type self.object_id = object_id self.enabled = False self.clause = self.clause.replace(macro.EXCLUSION_MACRO, '{}="{}",{}'.format( content_type.model, content_object.name, macro.EXCLUSION_MACRO )) self.save() # Add a label to our new rule by default, to help ensure notifications # get routed to the notifier we expect self.add_label(content_type.model, content_object.name) for label in RuleLabel.objects.filter(rule_id=orig_pk): # Skip service labels from our previous rule if label.name in ['service', 'project']: logger.debug('Skipping %s: %s', label.name, label.value) continue logger.debug('Copying %s to %s', label, self) label.pk = None label.rule = self label.save() for annotation in RuleAnnotation.objects.filter(rule_id=orig_pk): logger.debug('Copying %s to %s', annotation, self) annotation.pk = None annotation.rule = self annotation.save() return self
class Sender(models.Model): objects = ObjectFilterManager() sender = models.CharField(max_length=128) value = models.CharField(max_length=128) alias = models.CharField(max_length=128, blank=True) content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE, limit_choices_to=( models.Q(app_label='auth', model='user') | models.Q(app_label='promgen', model='project') | models.Q(app_label='promgen', model='service')) ) object_id = models.PositiveIntegerField() content_object = GenericForeignKey('content_type', 'object_id') owner = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, null=True) enabled = models.BooleanField(default=True) def show_value(self): if self.alias: return self.alias return self.value show_value.short_description = 'Value' def __str__(self): return '{}:{}'.format(self.sender, self.show_value()) @classmethod def driver_set(cls): '''Return the list of drivers for Sender model''' for entry in plugins.notifications(): try: yield entry.module_name, entry.load() except ImportError: logger.warning('Error importing %s', entry.module_name) __driver = {} @property def driver(self): '''Return configured driver for Sender model instance''' if self.sender in self.__driver: return self.__driver[self.sender] for entry in plugins.notifications(): try: self.__driver[entry.module_name] = entry.load()() except ImportError: logger.warning('Error importing %s', entry.module_name) return self.__driver[self.sender] def test(self): ''' Test sender plugin Uses the same test json from our unittests but subs in the currently tested object as part of the test data ''' data = tests.Data("examples", "alertmanager.json").json() if hasattr(self.content_object, 'name'): data['commonLabels'][self.content_type.name] = self.content_object.name for alert in data.get('alerts', []): alert['labels'][self.content_type.name] = self.content_object.name from promgen import tasks tasks.send_alert(self.sender, self.value, data) def filtered(self, alert): """ Check filters for a specific sender If no filters are defined, then we let the message through If filters are defined, then we check to see if at least one filter matches If no filters match, then we assume it's filtered out """ logger.debug("Checking labels %s", alert["commonLabels"]) # If we have no specific whitelist, then we let everything through if self.filter_set.count() == 0: return False # If we have filters defined, then we need to check to see if our # filters match for f in self.filter_set.all(): logger.debug("Checking filter %s %s", f.name, f.value) if alert["commonLabels"].get(f.name) == f.value: return False # If none of our filters match, then we blacklist this sender return True
class AlertLabel(models.Model): alert = models.ForeignKey('Alert', on_delete=models.CASCADE) name = models.CharField(max_length=128) value = models.TextField()
class Probe(models.Model): module = models.CharField(help_text='Probe Module from blackbox_exporter config', max_length=128, unique=True) description = models.TextField(blank=True) def __str__(self): return "{} » {}".format(self.module, self.description)