Hi,
I just recently found out that the spec error reporting is different in
different environments.
I have the following functions:
(defn search-page [{:keys [off-url off-user off-password]} search]
(let [products (off/search-products search)
products-with-nutriments (mapv #(off/add-nutriments %
off/nutriments-to-extract) (:products products))]
(layout/render "off/search.html" {:products products-with-nutriments
:search search})))
(defn off-routes [config]
(routes (GET "/off/search" [] (search-page config "toast"))))
where off/add-nutriments is a specced function. Now when the spec of that
function fails and I call *search-page* from the REPL I get this output:
Execution error - invalid arguments to off/add-nutriments at (core.clj:9).
"" - failed: #{"kJ" "kcal" "kCal" "g" "mg"} at: [:product :nutriments
:clojure.spec.alpha/pred :sugars_unit] spec: :off/unit
"" - failed: #{"kJ" "kcal" "kCal" "g" "mg"} at: [:product :nutriments
:clojure.spec.alpha/pred :fat_unit] spec: :off/unit
"" - failed: #{"kJ" "kcal" "kCal" "g" "mg"} at: [:product :nutriments
:clojure.spec.alpha/pred :salt_unit] spec: :off/unit
{:salt "3.5", :sugars_unit "", :energy-kcal "201.81514210652017", :energy_unit
"kcal", :energy_value 202, :proteins_value "17.6", :proteins_unit "",
:carbohydrates_unit "", :saturated-fat_value "8.2", :fat 12, :energy 845,
:salt_value "3.5", :saturated-fat_unit "", :fat_100g 12, :sugars_value 6,
:sodium_100g "1.37795275590551", :carbohydrates_value 6, :proteins_100g "17.6",
:fat_unit "", :saturated-fat "8.2", :sugars_100g 6, :sodium "1.37795275590551",
:sugars 6, :carbohydrates 6, :energy_100g 845, :salt_100g "3.5",
:saturated-fat_100g "8.2", :salt_unit "", :carbohydrates_100g 6, :proteins
"17.6", :fat_value 12} - failed: nil? at: [:product :nutriments
:clojure.spec.alpha/nil] spec: :off/nutriments
which is nice and readable.
Whereas when I run the *search-page* from the started web server through the
*/off/search* route I get a stacktrace and a very unreadable output:
clojure.lang.ExceptionInfo: Call to
#'de.sveri.getless.service.off/add-nutriments did not conform to spec.
{:clojure.spec.alpha/problems ({:path [:product :nutriments
:clojure.spec.alpha/nil], :pred nil?, :val {:salt "3.5", :sugars_unit "",
:energy-kcal "201.81514210652017", :energy_unit "kcal", :energy_value 202,
:proteins_value "17.6", :proteins_unit "", :carbohydrates_unit "",
:saturated-fat_value "8.2", :fat 12, :energy 845, :salt_value "3.5",
:saturated-fat_unit "", :fat_100g 12, :sugars_value 6, :sodium_100g
"1.37795275590551", :carbohydrates_value 6, :proteins_100g "17.6", :fat_unit
"", :saturated-fat "8.2", :sugars_100g 6, :sodium "1.37795275590551", :sugars
6, :carbohydrates 6, :energy_100g 845, :salt_100g "3.5", :saturated-fat_100g
"8.2", :salt_unit "", :carbohydrates_100g 6, :proteins "17.6", :fat_value 12},
:via [:de.sveri.getless.service.off/nutriments], :in [0 :nutriments]} {:path
[:product :nutriments :clojure.spec.alpha/pred :sugars_unit], :pred #{"kJ"
"kcal" "kCal" "g" "mg"}, :val "", :via
[:de.sveri.getless.service.off/nutriments :de.sveri.getless.service.off/unit],
:in [0 :nutriments :sugars_unit]} {:path [:product :nutriments
:clojure.spec.alpha/pred :fat_unit], :pred #{"kJ" "kcal" "kCal" "g" "mg"}, :val
"", :via [:de.sveri.getless.service.off/nutriments
:de.sveri.getless.service.off/unit], :in [0 :nutriments :fat_unit]} {:path
[:product :nutriments :clojure.spec.alpha/pred :salt_unit], :pred #{"kJ" "kcal"
"kCal" "g" "mg"}, :val "", :via [:de.sveri.getless.service.off/nutriments
:de.sveri.getless.service.off/unit], :in [0 :nutriments :salt_unit]}),
:clojure.spec.alpha/spec #object[clojure.spec.alpha$regex_spec_impl$reify__2509
0x302765e4 "clojure.spec.alpha$regex_spec_impl$reify__2509@302765e4"],
:clojure.spec.alpha/value ({:image_thumb_url
"https://static.openfoodfacts.org/images/products/20987664/front_de.3.100.jpg";,
:_keywords ["schmelzkase" "light" "toast"], :image_small_url
"https://static.openfoodfacts.org/images/products/20987664/front_de.3.200.jpg";,
:nutriments {:salt "3.5", :sugars_unit "", :energy-kcal "201.81514210652017",
:energy_unit "kcal", :energy_value 202, :proteins_value "17.6", :proteins_unit
"", :carbohydrates_unit "", :saturated-fat_value "8.2", :fat 12, :energy 845,
:salt_value "3.5", :saturated-fat_unit "", :fat_100g 12, :sugars_value 6,
:sodium_100g "1.37795275590551", :carbohydrates_value 6, :proteins_100g "17.6",
:fat_unit "", :saturated-fat "8.2", :sugars_100g 6, :sodium "1.37795275590551",
:sugars 6, :carbohydrates 6, :energy_100g 845, :salt_100g "3.5",
:saturated-fat_100g "8.2", :salt_unit "", :carbohydrates_100g 6, :proteins
"17.6", :fat_value 12}, :ingredients_text "", :rev 10, :lang "de", :ingredients
[], :id "20987664", :code "20987664", :product_name_de "Toast Light
Schmelzkäse", :nutrition_data_per "100g", :quantity "250 g", :product_name
"Toast Light Schmelzkäse"} #object[clojure.core$partial$fn__5841 0x73f4c45a
"clojure.core$partial$fn__5841@73f4c45a"] ["energy" "fat" "saturated-fat"
"carbohydrates" "sugars" "proteins" "salt" "fiber" "cholesterol"
"monounsaturated-fat" "polyunsaturated-fat"]), :clojure.spec.alpha/fn
de.sveri.getless.service.off/add-nutriments, :clojure.spec.alpha/args
({:image_thumb_url
"https://static.openfoodfacts.org/images/products/20987664/front_de.3.100.jpg";,
:_keywords ["schmelzkase" "light" "toast"], :image_small_url
"https://static.openfoodfacts.org/images/products/20987664/front_de.3.200.jpg";,
:nutriments {:salt "3.5", :sugars_unit "", :energy-kcal "201.81514210652017",
:energy_unit "kcal", :energy_value 202, :proteins_value "17.6", :proteins_unit
"", :carbohydrates_unit "", :saturated-fat_value "8.2", :fat 12, :energy 845,
:salt_value "3.5", :saturated-fat_unit "", :fat_100g 12, :sugars_value 6,
:sodium_100g "1.37795275590551", :carbohydrates_value 6, :proteins_100g "17.6",
:fat_unit "", :saturated-fat "8.2", :sugars_100g 6, :sodium "1.37795275590551",
:sugars 6, :carbohydrates 6, :energy_100g 845, :salt_100g "3.5",
:saturated-fat_100g "8.2", :salt_unit "", :carbohydrates_100g 6, :proteins
"17.6", :fat_value 12}, :ingredients_text "", :rev 10, :lang "de", :ingredients
[], :id "20987664", :code "20987664", :product_name_de "Toast Light
Schmelzkäse", :nutrition_data_per "100g", :quantity "250 g", :product_name
"Toast Light Schmelzkäse"} #object[clojure.core$partial$fn__5841 0x73f4c45a
"clojure.core$partial$fn__5841@73f4c45a"] ["energy" "fat" "saturated-fat"
"carbohydrates" "sugars" "proteins" "salt" "fiber" "cholesterol"
"monounsaturated-fat" "polyunsaturated-fat"]), :clojure.spec.alpha/failure
:instrument, :clojure.spec.test.alpha/caller {:file "off.clj", :line 15,
:var-scope de.sveri.getless.routes.off/search-page, :local-fn fn}}
at
clojure.spec.test.alpha$spec_checking_fn$conform_BANG___3024.invoke(alpha.clj:132)
at
clojure.spec.test.alpha$spec_checking_fn$fn__3026.doInvoke(alpha.clj:140)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at de.sveri.getless.routes.off$search_page$fn__32398.invoke(off.clj:15)
at clojure.core$mapv$fn__8445.invoke(core.clj:6912)
...
Obviously I would prefer the stacktrace and the readable output, but have no
idea how to achieve that. What is the idiomatic way to print a readable spec
explanation and a stacktrace in this context?
Thanks,
Sven
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![https://static.openfoodfacts.org/images/products/20987664/front_de.3.100.jpg"](https://static.openfoodfacts.org/images/products/20987664/front_de.3.100.jpg"){kind=link}
![https://static.openfoodfacts.org/images/products/20987664/front_de.3.200.jpg"](https://static.openfoodfacts.org/images/products/20987664/front_de.3.200.jpg"){kind=link}