Initial import of Twingly::HTTP

[dentarg]

Imported from Seikan, tried to change as little as possible:

$ diff -u seikan/lib/twingly/http.rb twingly-http/lib/twingly/http.rb
--- seikan/lib/twingly/http.rb  2019-11-06 13:43:56.000000000 +0100
+++ twingly-http/lib/twingly/http.rb  2019-11-06 16:09:46.000000000 +0100
@@ -2,11 +2,10 @@

 require "net/http"
 require "faraday"
-require "request_store"

 require_relative "../faraday/logfmt_logger"
 require_relative "../faraday/url_size_limit"
-require_relative "../heroku"
+require_relative "heroku"
 require_relative "string_utilities"

 module Twingly
@@ -36,12 +35,14 @@
       attr_writer :retry_interval
       attr_writer :on_retry_callback
       attr_writer :max_url_size_bytes
+      attr_writer :request_id

       attr_accessor :retryable_exceptions

       def initialize(logger:, base_user_agent:)
         @logger          = logger
         @base_user_agent = base_user_agent
+        @request_id      = nil

         @http_timeout      = DEFAULT_HTTP_TIMEOUT
         @http_open_timeout = DEFAULT_HTTP_OPEN_TIMEOUT
@@ -123,8 +124,10 @@
                           exceptions: @retryable_exceptions,
                           methods: [], # empty [] forces Faraday to run retry_if
                           retry_if: retry_if
-          faraday.response :logfmt_logger,
-                           @logger.dup, headers: true, bodies: true
+          faraday.response :logfmt_logger, @logger.dup,
+                           headers: true,
+                           bodies: true,
+                           request_id: @request_id
           faraday.adapter Faraday.default_adapter
           faraday.headers[:user_agent] = user_agent
         end
@@ -175,13 +178,9 @@

       def default_headers
         {
-          "X-Request-Id": request_id,
+          "X-Request-Id": @request_id,
         }.delete_if { |_name, value| value.to_s.strip.empty? }
       end
-
-      def request_id
-        RequestStore.store[:request_id]
-      end
     end

     class Response

$ diff -u seikan/lib/faraday/logfmt_logger/middleware.rb twingly-http/lib/faraday/logfmt_logger/middleware.rb
--- seikan/lib/faraday/logfmt_logger/middleware.rb  2019-11-06 13:43:56.000000000 +0100
+++ twingly-http/lib/faraday/logfmt_logger/middleware.rb  2019-11-06 13:12:18.000000000 +0100
@@ -63,12 +63,12 @@
       private

       def request_id
-        RequestStore.store[:request_id]
+        @options[:request_id]
       end

       def app_metadata
         {
-          "release": Heroku.release_version,
+          "release": Twingly::HTTP::Heroku.release_version,
         }
       end