Refactor Repository to use new RepositoryCache class

Abstracts away the lower-level implementation details from the
Repository model.

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/repository_cache.rb b/lib/repository_cache.rb
new file mode 100644
index 00000000000..0d52f50be91
--- /dev/null
+++ b/lib/repository_cache.rb
@@ -0,0 +1,25 @@
+# Interface to the Redis-backed cache store used by the Repository model
+class RepositoryCache
+  attr_reader :namespace
+
+  def initialize(namespace, backend = Rails.cache)
+    @namespace = namespace
+    @backend = backend
+  end
+
+  def cache_key(type)
+    "#{type}:#{namespace}"
+  end
+
+  def expire(key)
+    backend.delete(cache_key(key))
+  end
+
+  def fetch(key, &block)
+    backend.fetch(cache_key(key), &block)
+  end
+
+  private
+
+  attr_reader :backend
+end