Module: Datadog::Tracing::Contrib::Sinatra::Headers

Defined in:
lib/datadog/tracing/contrib/sinatra/headers.rb

Overview

Gets and sets trace information from a Rack headers Hash

Class Method Summary collapse

Class Method Details

.response_header_tags(headers, target_headers) ⇒ Object 



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# File 'lib/datadog/tracing/contrib/sinatra/headers.rb', line 13

def response_header_tags(headers, target_headers)
  target_headers ||= []

  {}.tap do |result|
    target_headers.each do |header|
      if headers.key?(header)
        result[Tracing::Metadata::Ext::HTTP::ResponseHeaders.to_tag(header)] = headers[header]
      else
        # Try a case-insensitive lookup
        uppercased_header = header.to_s.upcase
        matching_header = headers.keys.find { |h| h.upcase == uppercased_header }
        if matching_header
          result[Tracing::Metadata::Ext::HTTP::ResponseHeaders.to_tag(header)] = headers[matching_header]
        end
      end
    end
  end
end