Ensure static file directories exist

src/duct/middleware/web.clj

@@ -1,5 +1,6 @@
 (ns duct.middleware.web
-  (:require [duct.logger :as logger]
+  (:require [clojure.java.io :as io]
+            [duct.logger :as logger]
             [integrant.core :as ig]
             [ring.middleware.defaults :refer [wrap-defaults]]
             [ring.middleware.stacktrace :refer [wrap-stacktrace]]
@@ -74,7 +75,12 @@
 (defmethod ig/init-key ::hide-errors [_ {:keys [error-handler]}]
   #(wrap-hide-errors % error-handler))
 
+(defn- ensure-dirs-exist [dirs]
+  (doseq [dir dirs :let [f (io/file dir)] :when (not (.exists f))]
+    (.mkdirs f)))
+
 (defmethod ig/init-key ::defaults [_ defaults]
+  (ensure-dirs-exist (-> defaults :static :files))
   #(wrap-defaults % defaults))
 
 (defmethod ig/init-key ::webjars [_ {:keys [path] :or {path "/assets"}}]

test/duct/middleware/web_test.clj

@@ -3,7 +3,9 @@
             [duct.logger :as logger]
             [duct.middleware.web :refer :all]
             [integrant.core :as ig]
-            [ring.mock.request :as mock]))
+            [ring.mock.request :as mock])
+  (:import [java.nio.file Files]
+           [java.nio.file.attribute FileAttribute]))
 
 (defrecord TestLogger [logs]
   logger/Logger
@@ -80,3 +82,12 @@
         (handler (mock/request :get "/") respond raise)
         (is (not (realized? raise)))
         (is (= @respond response))))))
+
+(deftest test-wrap-defaults
+  (let [attrs   (make-array FileAttribute 0)
+        tempdir (Files/createTempDirectory "duct" attrs)]
+    (Files/delete tempdir)
+    (ig/init-key :duct.middleware.web/defaults
+                 {:static {:files [(str tempdir)]}})
+    (is (.exists (.toFile tempdir)))
+    (Files/deleteIfExists tempdir)))