Add development-storage support

Author: Sven Felix Oberquelle

lib/paperclip/storage/azure.rb

@@ -83,15 +83,16 @@ def self.extended base
 
       def expiring_url(time = 3600, style_name = default_style)
         if path(style_name)
-          uri = URI azure_uri(style_name)
+          uri = URI "#{container_name}/#{path(style_name).gsub(%r{\A/}, '')}"
           generator = ::Azure::Storage::Core::Auth::SharedAccessSignature.new azure_account_name,
-                                                                              azure_credentials[:storage_access_key]
+            azure_storage_client.storage_access_key
 
           generator.signed_uri uri, false, service:      'b',
                                            resource:     'b',
                                            permissions:  'r',
                                            start:        (Time.now - (5 * 60)).utc.iso8601,
                                            expiry:       (Time.now + time).utc.iso8601
+          azure_interface.generate_uri uri.path, CGI::parse(uri.query || "")
         else
           url(style_name)
         end
@@ -107,10 +108,7 @@ def azure_credentials
       end
 
       def azure_account_name
-        account_name = @options[:azure_storage_account_name] || azure_credentials[:storage_account_name]
-        account_name = account_name.call(self) if account_name.is_a?(Proc)
-
-        account_name
+        azure_storage_client.storage_account_name
       end
 
       def container_name
@@ -132,15 +130,17 @@ def azure_interface
       end
 
       def azure_storage_client
-        config = {}
+        @azure_storage_client ||= begin
+          config = {}
 
-        [:storage_account_name, :storage_access_key].each do |opt|
-          config[opt] = azure_credentials[opt] if azure_credentials[opt]
-        end
+          [:storage_account_name, :storage_access_key, :use_development_storage].each do |opt|
+            config[opt] = azure_credentials[opt] if azure_credentials[opt]
+          end
 
-        config[:storage_blob_host] = "https://#{azure_base_url}"
+          config[:storage_blob_host] = "https://#{Environment.url_for azure_account_name, azure_credentials[:region]}" if azure_credentials[:region]
 
-        @azure_storage_client ||= ::Azure::Storage::Client.create config
+          ::Azure::Storage::Client.create config
+        end
       end
 
       def obtain_azure_instance_for(options)
@@ -154,7 +154,7 @@ def obtain_azure_instance_for(options)
       end
 
       def azure_uri(style_name = default_style)
-        "https://#{azure_base_url}/#{container_name}/#{path(style_name).gsub(%r{\A/}, '')}"
+        "#{azure_storage_client.storage_blob_host}/#{container_name}/#{path(style_name).gsub(%r{\A/}, '')}"
       end
 
       def azure_base_url

spec/paperclip/storage/azure_spec.rb

@@ -109,8 +109,8 @@
                     container: "container",
                     path: ":attachment/:basename:dotextension",
                     azure_credentials: {
-                      'access_key_id' => "12345",
-                      'secret_access_key' => "54321"
+                      storage_account_name: 'storage',
+                      storage_access_key: storage_access_key
                     }
 
         File.open(fixture_file('5k.png'), 'rb') do |file|
@@ -136,7 +136,8 @@
                     styles: { large: ["500x500#", :jpg] },
                     container: "container",
                     azure_credentials: {
-                      "storage_access_key" => "54321"
+                      storage_account_name: 'storage',
+                      storage_access_key: storage_access_key
                     }
 
       File.open(fixture_file("spaced file.png"), "rb") do |file|
@@ -162,18 +163,17 @@
                     styles: { large: ['500x500#', :jpg] },
                     container: "container",
                     azure_credentials: {
-                      'storage_access_key' => "54321"
+                      storage_account_name: 'storage',
+                      storage_access_key: storage_access_key
                     }
 
-      stringio = stringy_file
-      class << stringio
+      file = stringy_file
+      class << file
         def original_filename
           "question?mark.png"
         end
       end
 
-      file = Paperclip.io_adapters.for(stringio)
-
       @dummy = Dummy.new
       @dummy.avatar = file
       @dummy.save