Class: Perus::Server::Alert

Inherits:
Sequel::Model
  • Object
show all
Defined in:
lib/perus/server/models/alert.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cache_active_alerts ⇒ Object 



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# File 'lib/perus/server/models/alert.rb', line 30

def self.cache_active_alerts
    puts 'Caching active alerts'
    start = Time.now
    systems = System.all

    Alert.each do |alert|
        begin
            # active_alerts are left as is if they are still active
            currently_active = {}
            alert.active_alerts.each do |active_alert|
                currently_active[active_alert.system_id] = active_alert
            end

            # remove active alerts if they're no longer valid, add new
            # ones as needed.
            systems.each do |system|
                active = alert.execute(system)
                if active && !currently_active.include?(system.id)
                    ActiveAlert.add(alert, system)
                elsif !active && currently_active.include?(system.id)
                    currently_active[system.id].destroy
                end
            end

            # no errors occurred by this point, so remove the error
            # string if it exists from a previous run
            alert.errors = nil
        rescue => e
            alert.errors = e.inspect
        end
        
        # update alert.errors
        alert.save
    end

    puts "Caching complete, took #{Time.now - start}s"
end

Instance Method Details

#after_destroy ⇒ Object 



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# File 'lib/perus/server/models/alert.rb', line 25

def after_destroy
    super
    active_alerts.each(&:destroy)
end

#execute(system) ⇒ Object 



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# File 'lib/perus/server/models/alert.rb', line 5

def execute(system)
    system.instance_eval(code)
end

#execute_errors ⇒ Object 



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# File 'lib/perus/server/models/alert.rb', line 9

def execute_errors
    values[:errors]
end

#severity_level ⇒ Object 



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# File 'lib/perus/server/models/alert.rb', line 13

def severity_level
    if active_alerts_dataset.empty?
        0
    elsif severity == 'notice'
        1
    elsif severity == 'warning'
        2
    elsif severity == 'error'
        3
    end
end