Module: HTTPInstrumentation::Instrumentation::NetHTTPHook

Defined in:
lib/http_instrumentation/instrumentation/net_http_hook.rb

Overview

This module is responsible for instrumenting the net/http module in the standard library.

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Class Attribute Details

.aliased ⇒ Object

Returns the value of attribute aliased.



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# File 'lib/http_instrumentation/instrumentation/net_http_hook.rb', line 21

def aliased
  @aliased
end

Class Method Details

.installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/http_instrumentation/instrumentation/net_http_hook.rb', line 17

def installed?
  !!(defined?(::Net::HTTP) && ::Net::HTTP.include?(self))
end

.instrument! ⇒ Object 



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# File 'lib/http_instrumentation/instrumentation/net_http_hook.rb', line 13

def instrument!
  Instrumentation.instrument!(::Net::HTTP, self, :request) if defined?(::Net::HTTP)
end

Instance Method Details

#request(req, *args, &block) ⇒ Object 



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# File 'lib/http_instrumentation/instrumentation/net_http_hook.rb', line 24

def request(req, *args, &block)
  unless started?
    if HTTPInstrumentation::Instrumentation::NetHTTPHook.aliased
      return request_without_http_instrumentation(req, *args, &block)
    else
      return super
    end
  end

  HTTPInstrumentation.instrument("net/http") do |payload|
    response = if HTTPInstrumentation::Instrumentation::NetHTTPHook.aliased
      request_without_http_instrumentation(req, *args, &block)
    else
      super
    end

    begin
      default_port = (use_ssl? ? 443 : 80)
      scheme = (use_ssl? ? "https" : "http")
      url = "#{scheme}://#{address}#{":#{port}" unless port == default_port}#{req.path}"
      payload[:http_method] = req.method
      payload[:url] = url
      payload[:status_code] = response.code
    rescue
      # Instrumentation must never break the request; if the payload can't
      # be built, return the response without the extra fields.
    end

    response
  end
end