Class: CoreLibrary::RackRequestHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/apimatic-core/utilities/rack_request_helper.rb

Overview

SignatureVerifierHelper ===

Utility class for extracting headers and body from Rack::Request (or request-like objects).

All methods are class methods and can be used without instantiating.

Class Method Summary collapse

Class Method Details

.extract_headers_hash(request) ⇒ Hash{String => String}

Extract headers into a downcast-key Hash from Rack::Request or request-like object. Supports both Rack env (‘request.env`) and objects exposing `headers` Hash.

Parameters:

  • request (Rack::Request, #env, #headers)

Returns:

  • (Hash{String => String}) 


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# File 'lib/apimatic-core/utilities/rack_request_helper.rb', line 13

def extract_headers_hash(request)
  env = if request.respond_to?(:env)
          request.env
        elsif request.respond_to?(:headers) && request.headers.is_a?(Hash)
          headers_to_env(request.headers)
        else
          {}
        end

  env.each_with_object({}) do |(k, v), acc|
    next if v.nil?

    key = k.to_s
    if key.start_with?('HTTP_') || %w[CONTENT_TYPE CONTENT_LENGTH].include?(key)
      header_name = format_header_name(key)
      acc[header_name.downcase] = v.to_s
    end
  end
end

.prepend_header(name) ⇒ String

Normalizes a header name to the Rack environment variable format.

  • Converts “Content-Type” → “CONTENT_TYPE”

  • Converts “Content-Length” → “CONTENT_LENGTH”

  • Converts all other headers → “HTTP_<UPPERCASED_NAME>”

Parameters:

  • name (String, Symbol) —

    The header name.

Returns:

  • (String) —

    The Rack-compliant environment key.



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# File 'lib/apimatic-core/utilities/rack_request_helper.rb', line 58

def prepend_header(name)
  k_s = name.to_s
  if /\Acontent[-_]type\z/i.match?(k_s)
    'CONTENT_TYPE'
  elsif /\Acontent[-_]length\z/i.match?(k_s)
    'CONTENT_LENGTH'
  else
    "HTTP_#{k_s.upcase.gsub('-', '_')}"
  end
end

.read_raw_body(request) ⇒ String

Read raw body from a Rack::Request (rewinds after reading). Falls back to ‘raw_body` if provided.

Parameters:

  • request (Rack::Request, #body, #raw_body)

Returns:

  • (String) 


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# File 'lib/apimatic-core/utilities/rack_request_helper.rb', line 38

def read_raw_body(request)
  if request.respond_to?(:body) && request.body.respond_to?(:read)
    body = request.body.read
    request.body.rewind if request.body.respond_to?(:rewind)
    body
  elsif request.respond_to?(:raw_body)
    request.raw_body.to_s
  else
    ''.dup
  end
end