1 files changed, 27 insertions, 0 deletions
diff --git a/lib/gitlab/middleware/correlation_id.rb b/lib/gitlab/middleware/correlation_id.rb
new file mode 100644
index 00000000000..51e2a51ac1b
--- /dev/null
+++ b/lib/gitlab/middleware/correlation_id.rb
@@ -0,0 +1,27 @@
+# A dumb middleware that returns a Go HTML document if the go-get=1 query string
+# is used irrespective if the namespace/project exists
+module Gitlab
+  module Middleware
+    class CorrelationId
+      include ActionView::Helpers::TagHelper
+
+      CORRELATION_HEADER = 'HTTP_CORRELATION_ID'
+
+      def initialize(app)
+        @app = app
+      end
+
+      def call(env)
+        Gitlab::JsonLogger.use_correlation_id(correlation_id) do
+          @app.call(env)
+        end
+      end
+
+      private
+
+      def correlation_id
+        env[CORRELATION_HEADER] || SecureRandom.hex
+      end
+    end
+  end
+end