Add HTTPClient adapter

nahi/httpclient#90

Gemfile

@@ -8,6 +8,7 @@ group :test do
   gem 'em-http-request', '~> 1.0', :require => 'em-http'
   gem 'em-synchrony', '~> 1.0', :require => ['em-synchrony', 'em-synchrony/em-http'], :platforms => :ruby_19
   gem 'excon', '~> 0.6'
+  gem 'httpclient', '~> 2.2'
   gem 'net-http-persistent', '~> 2.5', :require => false
   gem 'leftright', '~> 0.9', :require => false
   gem 'rack-test', '~> 0.6', :require => 'rack/test'

lib/faraday/adapter.rb

@@ -14,7 +14,8 @@ module Faraday
       :Patron            => 'patron',
       :Excon             => 'excon',
       :Test              => 'test',
-      :Rack              => 'rack'
+      :Rack              => 'rack',
+      :HTTPClient        => 'httpclient'
 
     register_middleware \
       :test                => :Test,
@@ -25,7 +26,8 @@ module Faraday
       :em_synchrony        => :EMSynchrony,
       :em_http             => :EMHttp,
       :excon               => :Excon,
-      :rack                => :Rack
+      :rack                => :Rack,
+      :httpclient          => :HTTPClient
 
     module Parallelism
       attr_writer :supports_parallel

lib/faraday/adapter/httpclient.rb

@@ -0,0 +1,80 @@
+module Faraday
+  class Adapter
+    class HTTPClient < Faraday::Adapter
+      dependency 'httpclient'
+
+      def call(env)
+        super
+
+        client ||= ::HTTPClient.new
+
+        if req = env[:request]
+          if proxy = req[:proxy]
+            configure_proxy client, proxy
+          end
+          configure_timeouts client, req
+        end
+
+        if env[:url].scheme == 'https' && ssl = env[:ssl]
+          configure_ssl client, ssl
+        end
+
+        # TODO Don't stream yet.
+        # https://github.com/nahi/httpclient/pull/90
+        env[:body] = env[:body].read if env[:body].respond_to? :read
+
+        resp = client.request env[:method], env[:url],
+          :body   => env[:body],
+          :header => env[:request_headers]
+
+        save_response env, resp.status, resp.body, resp.headers
+
+        @app.call env
+      rescue ::HTTPClient::TimeoutError
+        raise Faraday::Error::TimeoutError, $!
+      end
+
+      def configure_proxy(client, proxy)
+        client.proxy = proxy[:uri]
+        if proxy[:user] && proxy[:password]
+          client.set_proxy_auth proxy[:user], proxy[:password]
+        end
+      end
+
+      def configure_ssl(client, ssl)
+        ssl_config = client.ssl_config
+
+        ssl_config.add_trust_ca ssl[:ca_file]        if ssl[:ca_file]
+        ssl_config.add_trust_ca ssl[:ca_path]        if ssl[:ca_path]
+        ssl_config.cert_store   = ssl[:cert_store]   if ssl[:cert_store]
+        ssl_config.client_cert  = ssl[:client_cert]  if ssl[:client_cert]
+        ssl_config.client_key   = ssl[:client_key]   if ssl[:client_key]
+        ssl_config.verify_depth = ssl[:verify_depth] if ssl[:verify_depth]
+        ssl_config.verify_mode  = ssl_verify_mode(ssl)
+      end
+
+      def configure_timeouts(client, req)
+        if req[:timeout]
+          client.connect_timeout   = req[:timeout]
+          client.receive_timeout   = req[:timeout]
+          client.send_timeout      = req[:timeout]
+        end
+
+        if req[:open_timeout]
+          client.connect_timeout   = req[:open_timeout]
+          client.send_timeout      = req[:open_timeout]
+        end
+      end
+
+      def ssl_verify_mode(ssl)
+        ssl[:verify_mode] || begin
+          if ssl.fetch(:verify, true)
+            OpenSSL::SSL::VERIFY_PEER | OpenSSL::SSL::VERIFY_FAIL_IF_NO_PEER_CERT
+          else
+            OpenSSL::SSL::VERIFY_NONE
+          end
+        end
+      end
+    end
+  end
+end

test/adapters/httpclient_test.rb

@@ -0,0 +1,10 @@
+require File.expand_path('../integration', __FILE__)
+
+module Adapters
+  class HttpclientTest < Faraday::TestCase
+
+    def adapter() :httpclient end
+
+    Integration.apply(self, :NonParallel)
+  end
+end