Class: Datadog::AppSec::Contrib::Devise::TrackingMiddleware

Inherits:
Object
  • Object
show all
Defined in:
lib/datadog/appsec/contrib/devise/tracking_middleware.rb

Overview

A Rack middleware capable of tracking currently signed user

Constant Summary collapse

WARDEN_KEY = 
'warden'
SESSION_ID_KEY = 
'session_id'

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ TrackingMiddleware

Returns a new instance of TrackingMiddleware.


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# File 'lib/datadog/appsec/contrib/devise/tracking_middleware.rb', line 15

def initialize(app)
  @app = app
  @devise_session_scope_keys = {}
end

Instance Method Details

#call(env) ⇒ Object 


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# File 'lib/datadog/appsec/contrib/devise/tracking_middleware.rb', line 20

def call(env)
  return @app.call(env) unless AppSec.enabled?
  return @app.call(env) unless Configuration.auto_user_instrumentation_enabled?
  return @app.call(env) unless AppSec.active_context

  unless env.key?(WARDEN_KEY)
    Datadog.logger.debug { 'AppSec: unable to track requests, due to missing warden manager' }
    return @app.call(env)
  end

  context = AppSec.active_context
  if context.trace.nil? || context.span.nil?
    Datadog.logger.debug { 'AppSec: unable to track requests, due to missing trace or span' }
    return @app.call(env)
  end

  # NOTE: Rails session id will be set for unauthenticated users as well,
  #       so we need to make sure we are tracking only authenticated users.
  id = transform(extract_id(env[WARDEN_KEY]))
  session_id = env[WARDEN_KEY].raw_session[SESSION_ID_KEY] if id

  if id
    # NOTE: There is no option to set session id without setting user id via SDK.
    unless context.span.has_tag?(Ext::TAG_USR_ID) && context.span.has_tag?(Ext::TAG_SESSION_ID)
      user_id = context.span[Ext::TAG_USR_ID] || id
      user_session_id = context.span[Ext::TAG_SESSION_ID] || session_id

      # FIXME: The current implementation of event arguments is forsing us
      #        to bloat User class, and pass nil-value instead of skip
      #        passing them at first place.
      #        This is a temporary situation until we refactor events model.
      AppSec::Instrumentation.gateway.push(
        'identity.set_user', AppSec::Instrumentation::Gateway::User.new(user_id, nil, user_session_id)
      )
    end

    context.span[Ext::TAG_USR_ID] ||= id
    context.span[Ext::TAG_DD_USR_ID] = id
    context.span[Ext::TAG_DD_COLLECTION_MODE] ||= Configuration.auto_user_instrumentation_mode
  end

  @app.call(env)
end