Class: AppConfig

Inherits:
Object
  • Object
show all
Defined in:
lib/moesif_rack/app_config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(debug) ⇒ AppConfig

Returns a new instance of AppConfig.



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# File 'lib/moesif_rack/app_config.rb', line 12

def initialize(debug)
  @debug = debug
  @moesif_helpers = MoesifHelpers.new(debug)
  @regex_config_helper = RegexConfigHelper.new(debug)
end

Instance Attribute Details

#config ⇒ Object

Returns the value of attribute config.



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# File 'lib/moesif_rack/app_config.rb', line 10

def config
  @config
end

#last_download_time ⇒ Object

Returns the value of attribute last_download_time.



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# File 'lib/moesif_rack/app_config.rb', line 10

def last_download_time
  @last_download_time
end

#recent_etag ⇒ Object

Returns the value of attribute recent_etag.



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# File 'lib/moesif_rack/app_config.rb', line 10

def recent_etag
  @recent_etag
end

Instance Method Details

#calculate_weight(sample_rate) ⇒ Object 



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# File 'lib/moesif_rack/app_config.rb', line 96

def calculate_weight(sample_rate)
  sample_rate == 0 ? 1 : (100 / sample_rate).floor
end

#get_config(api_controller) ⇒ Object 



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# File 'lib/moesif_rack/app_config.rb', line 32

def get_config(api_controller)
  # Get Application Config
  @moesif_helpers.log_debug('try to loading etag')
  config_json, _context = api_controller.get_app_config
  @config = config_json
  @recent_etag = _context.response.headers[:x_moesif_config_etag]
  @last_download_time = Time.now.utc
  @moesif_helpers.log_debug('new config downloaded')
  @moesif_helpers.log_debug(config_json.to_s)
rescue MoesifApi::APIException => e
  if e.response_code.between?(401, 403)
    @moesif_helpers.log_debug 'Unauthorized access getting application configuration. Please check your Appplication Id.'
  end
  @moesif_helpers.log_debug 'Error getting application configuration, with status code:'
  @moesif_helpers.log_debug e.response_code
rescue StandardError => e
  @moesif_helpers.log_debug e.to_s
end

#get_sampling_percentage(event_model, user_id, company_id) ⇒ Object 



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# File 'lib/moesif_rack/app_config.rb', line 51

def get_sampling_percentage(event_model, user_id, company_id)
  # if we do not have config for some reason we return 100
  if !@config.nil?
  # Get sampling percentage
    @moesif_helpers.log_debug("Getting sample rate for user #{user_id} company #{company_id}")
    @moesif_helpers.log_debug(@config.to_s)

    # Get Regex Sampling rate
    regex_config = @config.fetch('regex_config', nil)

    if !regex_config.nil? and !event_model.nil?
      config_mapping = @regex_config_helper.prepare_config_mapping(event_model)
      regex_sample_rate = @regex_config_helper.fetch_sample_rate_on_regex_match(regex_config,
                                                                                config_mapping)
      return regex_sample_rate unless regex_sample_rate.nil?
    end

    # Get user sample rate object
    user_sample_rate = @config.fetch('user_sample_rate', nil)

    # Get company sample rate object
    company_sample_rate = @config.fetch('company_sample_rate', nil)

    # Get sample rate for the user if exist
    if !user_id.nil? && !user_sample_rate.nil? && user_sample_rate.key?(user_id)
      return user_sample_rate.fetch(user_id)
    end

    # Get sample rate for the company if exist
    if !company_id.nil? && !company_sample_rate.nil? && company_sample_rate.key?(company_id)
      return company_sample_rate.fetch(company_id)
    end

    # Return overall sample rate
    @config.fetch('sample_rate', 100)
  else
    @moesif_helpers.log_debug 'Assuming default behavior as response body is nil - '
    100
  end
rescue StandardError => e
  @moesif_helpers.log_debug 'Error while geting sampling percentage, assuming default behavior'
  @moesif_helpers.log_debug e.to_s
  100
end

#should_reload(etag_from_create_event) ⇒ Object 



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# File 'lib/moesif_rack/app_config.rb', line 18

def should_reload(etag_from_create_event)
  if @last_download_time.nil?
    return true
  elsif Time.now.utc > (@last_download_time + 300)
    return true
  elsif !etag_from_create_event.nil? && !@recent_etag.nil?
    @moesif_helpers.log_debug('comparing if etag from event and recent etag match ' + etag_from_create_event + ' ' + @recent_etag)

    return etag_from_create_event != @recent_etag
  end
  @moesif_helpers.log_debug('should skip reload config')
  return false;
end