Class: AppMap::Handler::Rails::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/appmap/handler/rails/context.rb

Overview

Context of a rails request tracking. Mostly a utility class to clean up and deduplicate request handler code.

Constant Summary collapse

REQUEST_CONTEXT =

context is set on the rack environment to make sure a single request is only recorded once even if ActionDispatch::Executor is entered more than once (as can happen with engines)

'appmap.handler.request.context'

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(environment = nil) ⇒ Context

Returns a new instance of Context.



11
12
13
14
 
# File 'lib/appmap/handler/rails/context.rb', line 11

def initialize(environment = nil)
  environment[REQUEST_CONTEXT] = self if environment
  @thread = Thread.current
end

Class Method Details

.create(environment) ⇒ Object 



20
21
22
23
24
 
# File 'lib/appmap/handler/rails/context.rb', line 20

def self.create(environment)
  return if from environment

  new environment
end

.from(environment) ⇒ Object 



16
17
18
 
# File 'lib/appmap/handler/rails/context.rb', line 16

def self.from(environment)
  environment[REQUEST_CONTEXT]
end

.remove(env) ⇒ Object 



26
27
28
 
# File 'lib/appmap/handler/rails/context.rb', line 26

def self.remove(env)
  env[REQUEST_CONTEXT] = nil
end

Instance Method Details

#find_template_render_value ⇒ Object 



30
31
32
33
34
 
# File 'lib/appmap/handler/rails/context.rb', line 30

def find_template_render_value
  @thread[TEMPLATE_RENDER_VALUE].tap do
    @thread[TEMPLATE_RENDER_VALUE] = nil
  end
end