1 files changed, 41 insertions, 0 deletions
diff --git a/lib/active_storage/service.rb b/lib/active_storage/service.rb
new file mode 100644
index 0000000000..038b6ccb53
--- /dev/null
+++ b/lib/active_storage/service.rb
@@ -0,0 +1,41 @@
+# Abstract class serving as an interface for concrete services.
+class ActiveStorage::Service
+  def self.configure(service, **options)
+    begin
+      require "active_storage/service/#{service.to_s.downcase}_service"
+      ActiveStorage::Service.const_get(:"#{service}Service").new(**options)
+    rescue LoadError => e
+      puts "Couldn't configure service: #{service} (#{e.message})"
+    end
+  end
+
+
+  def upload(key, io)
+    raise NotImplementedError
+  end
+
+  def download(key)
+    raise NotImplementedError
+  end
+
+  def delete(key)
+    raise NotImplementedError
+  end
+
+  def exist?(key)
+    raise NotImplementedError
+  end
+
+
+  def url(key, expires_in:, disposition:, filename:)
+    raise NotImplementedError
+  end
+
+  def bytesize(key)
+    raise NotImplementedError
+  end
+
+  def checksum(key)
+    raise NotImplementedError
+  end
+end