Class: Wayfarer::Middleware::Fetch

Inherits:
Object
  • Object
show all
Includes:
Stage::API
Defined in:
lib/wayfarer/middleware/fetch.rb

Defined Under Namespace

Modules: API

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Stage::API

#stage

Constructor Details

#initialize ⇒ Fetch

Returns a new instance of Fetch.



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# File 'lib/wayfarer/middleware/fetch.rb', line 23

def initialize
  @pool = Wayfarer::Networking::Pool.instance
end

Instance Attribute Details

#pool ⇒ Object (readonly)

Returns the value of attribute pool.



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# File 'lib/wayfarer/middleware/fetch.rb', line 20

def pool
  @pool
end

#task ⇒ Object

Returns the value of attribute task.



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# File 'lib/wayfarer/middleware/fetch.rb', line 21

def task
  @task
end

Instance Method Details

#call(task) ⇒ Object 



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# File 'lib/wayfarer/middleware/fetch.rb', line 27

def call(task)
  self.task = task

  pool.with do |context|
    result = task.job.run_callbacks :fetch do
      context.fetch(task.url)
    end

    case result
    when Networking::Result::Redirect
      stage(result.redirect_url)
    when Networking::Result::Success
      task.metadata.agent = context.instance
      task.metadata.page = result.page
      yield if block_given?
    end
  end
end