Module: AppMap::Rails::RequestHandler

Defined in:
lib/appmap/rails/request_handler.rb

Defined Under Namespace

Classes: HTTPServerRequest, HTTPServerResponse, HookMethod

Constant Summary collapse

IGNORE_HEADERS =

Host and User-Agent will just introduce needless variation. Content-Type and Authorization get their own fields in the request.

%w[host user_agent content_type authorization].map(&:upcase).map {|h| "HTTP_#{h}"}.freeze

Class Method Summary collapse

Class Method Details

.selected_headers(env) ⇒ Object 



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# File 'lib/appmap/rails/request_handler.rb', line 14

def selected_headers(env)
  # Rack prepends HTTP_ to all client-sent headers.
  matching_headers = env
    .select { |k,v| k.start_with? 'HTTP_'}
    .reject { |k,v| IGNORE_HEADERS.member?(k) }
    .reject { |k,v| v.blank? }
    .each_with_object({}) do |kv, memo|
      key = kv[0].sub(/^HTTP_/, '').split('_').map(&:capitalize).join('-')
      value = kv[1]
      memo[key] = value
    end
  matching_headers.blank? ? nil : matching_headers
end