Class: Alert

Inherits:
ActiveRecord::Base
  • Object
show all
Extended by:
PaginationSearch::Pagination
Defined in:
app/models/alert.rb

Constant Summary collapse

LOCATIONS_FOR_ATTRIBUTES = 
{
  title:       { association: :query, column: :title, type: :text },
  status:      { association: :base, column: :status, type: :text },
  description: { association: :base, column: :description, type: :text },
  author:      { association: :users, column: :name, type: :text },
  updated_at:  { association: :base, column: :updated_at, type: :time },
  created_at:  { association: :base, column: :created_at, type: :time }
}.freeze
INCLUDES_MODELS = 
[:query_versions, :query, :last_alert_result, :users].freeze
STATUSES = 
OpenStruct.new(
  {
    pending: 'Pending',
    errored: 'Errored',
    passing: 'Passing',
    failing: 'Failing',
    paused:  'Paused'
  }
)
COMPARISON_FUNCTIONS = 
{
  '<' => :result_is_less_than_target,
  '>' => :result_is_greater_than_target,
  '=' => :result_is_equal_to_target
}
BAD_DATA_SIZE_MESSAGE = 
'An alert result must return only a single row and a single column'
BAD_DATA_TYPE_MESSAGE = 
'An alert must return a number'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from PaginationSearch::Pagination

paginate_with, paginated

Instance Attribute Details

#query_title ⇒ Object

Returns the value of attribute query_title.



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# File 'app/models/alert.rb', line 7

def query_title
  @query_title
end

Class Method Details

.run_all ⇒ Object 



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# File 'app/models/alert.rb', line 55

def self.run_all
  all.each(&:run)
end

Instance Method Details

#check_last_result ⇒ Object 



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# File 'app/models/alert.rb', line 72

def check_last_result
  last_alert_result.reload
  return if error_from_result_failure
  data = last_alert_result.sample_data
  return if error_from_data_size(data)
  return unless value = to_number(data.first.first)
  set_status_from_outcome(value)
end

#error(message) ⇒ Object 



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# File 'app/models/alert.rb', line 65

def error(message)
  self.status = STATUSES.errored
  self.error_message = message
  save!
  send_failing_email
end

#run ⇒ Object 



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# File 'app/models/alert.rb', line 59

def run
  unless status == STATUSES.paused
    Resque.enqueue(AlertExecution, id, user.role)
  end
end