Add routing example using bell

.github/workflows/faas_fn_build_invoke.yml

@@ -72,3 +72,13 @@ jobs:
           if [ "$(docker exec bb-http-map-context curl -X POST -d '{"foo": "bar", "spam": "eggs"}' -H 'content-type: application/json' --retry 3 --retry-delay 2 --retry-connrefused http://127.0.0.1:8082)" != '[["foo","spam"],["bar","eggs"],"application/json","http://127.0.0.1:8082"]' ]; then
             exit 7
           fi
+
+          (docker stop bb-routes-bell || exit 0)
+          (docker rm bb-routes-bell || exit 0)
+          docker run -d --name bb-routes-bell ghcr.io/${{ github.repository_owner }}/bb-routes-bell:latest bb --main index
+          if [ "$(docker exec bb-routes-bell curl -X POST -d '{"foo": "bar"}' -H 'content-type: application/json' --retry 3 --retry-delay 2 --retry-connrefused http://127.0.0.1:8082)" != '[["foo"],["bar"]]' ]; then
+            exit 8
+          fi
+          if [ "$(docker exec bb-routes-bell curl -X PUT --retry 3 --retry-delay 2 --retry-connrefused http://127.0.0.1:8082/foo/123)" != '[["id"],["123"]]' ]; then
+            exit 9
+          fi

README.adoc

@@ -100,8 +100,7 @@ In `bb-streaming` language:
 ----
 (defn handler [event] ...)
 ----
-The `event` is the payload body, and the function return is the payload body for the response.
-
+The `event` is extracted from the HTTP payload body, and the function return is used as the HTTP payload body for the response.
 
 == link:examples[Function examples]
 

examples/http/bb-routes-bell/bb.edn

@@ -0,0 +1,2 @@
+{:paths ["."]
+ :deps {net.tessellator/bell {:mvn/version "0.2.0"}}}

examples/http/bb-routes-bell/handler.clj

@@ -0,0 +1,11 @@
+(ns function.handler
+  (:require [bell.core :refer [router POST PUT]]))
+
+(def handler
+  (router
+    (POST "/"
+          (fn [{:keys [body]}]
+            [(keys body) (vals body)]))
+    (PUT "/foo/:id"
+         (fn [{:keys [path-params]}]
+           [(keys path-params) (vals path-params)]))))

examples/stack.yml

@@ -27,3 +27,7 @@ functions:
     image: ${DOCKER_REGISTRY_IMG_ORG_PATH}/bb-http-map-context
     environment:
       keywords: true
+  bb-routes-bell:
+    lang: bb
+    handler: ./http/bb-routes-bell
+    image: ${DOCKER_REGISTRY_IMG_ORG_PATH}/bb-routes-bell

template/bb/bb.edn

@@ -1,2 +1,3 @@
+; used only for tests. Not copied into docker container
 {:paths ["." "lib"]
  :deps {eg/eg {:mvn/version "0.5.6-alpha"}}}

template/bb/index.clj

@@ -8,7 +8,6 @@
     [ring.middleware.json :refer [wrap-json-body]]
     [ring.middleware.text :refer [wrap-text-body]]
     [ring.middleware.headers :refer [wrap-lowercase-headers wrap-friendly-headers]]
-    [ring.middleware.headers]
     [ring.util.walk :as ring-walk]
     [compojure.response :as response]
     [function.handler :as function]))