Class: HealthCheck::MiddlewareHealthcheck

Inherits:
Object
  • Object
show all
Defined in:
lib/health_check/middleware_health_check.rb

Defined Under Namespace

Classes: Request

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ MiddlewareHealthcheck

Returns a new instance of MiddlewareHealthcheck.



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# File 'lib/health_check/middleware_health_check.rb', line 4

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/health_check/middleware_health_check.rb', line 8

def call(env)
  (response_type, middleware_checks, full_stack_checks) = parse_env(env)
  if response_type
    if error_response = (ip_blocked(env) || not_authenticated(env))
      return error_response
    end
    HealthCheck.installed_as_middleware = true
    errors = ''
    begin
      # Process the checks to be run from middleware
      errors = HealthCheck::Utils.process_checks(middleware_checks, true)
      # Process remaining checks through the full stack if there are any
      unless full_stack_checks.empty?
        return @app.call(env)
      end
    rescue => e
      errors = e.message.blank? ? e.class.to_s : e.message.to_s
    end
    healthy = errors.blank?
    msg = healthy ? HealthCheck.success : "health_check failed: #{errors}"
    if response_type == 'xml'
      content_type = 'text/xml'
      msg = { healthy: healthy, message: msg }.to_xml
      error_code = HealthCheck.http_status_for_error_object
    elsif response_type == 'json'
      content_type = 'application/json'
      msg = { healthy: healthy, message: msg }.to_json
      error_code = HealthCheck.http_status_for_error_object
    else
      content_type = 'text/plain'
      error_code = HealthCheck.http_status_for_error_text
    end
    [ (healthy ? 200 : error_code), { 'Content-Type' => content_type }, [msg] ]
  else
    @app.call(env)
  end
end