tests(*): add JSON Schema and demo script

Author: hishamhm

Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "proxy-wasm-rust-my-filter"
+name = "my-rust-filter"
 version = "0.1.0"
 authors = ["Caio Ramos Casimiro <caiorcasimiro@gmail.com>"]
 edition = "2018"

my_rust_filter.meta.json

@@ -0,0 +1,8 @@
+{
+   "config_schema": {
+      "type": "object",
+      "properties": {
+         "my_greeting": { "type": "string" }
+      }
+   }
+}

test/config/demo.yml

@@ -0,0 +1,18 @@
+
+_format_version: "1.1"
+
+services:
+- name: demo
+  url: http://httpbin.org
+# url: http://host.docker.internal:6502
+  routes:
+  - name: my-route
+    paths:
+    - /
+    strip_path: false
+    filter_chains:
+    - filters:
+      - name: my_rust_filter
+        config:
+          my_greeting: "Hello from Rust on Wasm!"
+

test/demo.sh

@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+set -x
+
+DEMO_KONG_CONTAINER="${DEMO_KONG_CONTAINER:-kong-wasm}"
+DEMO_KONG_IMAGE="${DEMO_KONG_IMAGE:-kong/kong:nightly}"
+
+function message() {
+    set +x
+    echo "----------------------------------------------------------------------"
+    echo $1
+    echo "----------------------------------------------------------------------"
+    set -x
+}
+
+################################################################################
+
+if [[ "$1" == "stop" ]]
+then
+    docker stop $DEMO_KONG_CONTAINER
+    docker rm $DEMO_KONG_CONTAINER
+    exit 0
+fi
+
+### Build filter ###############################################################
+
+message "Building the filter using cargo..."
+
+(
+    cd ..
+    cargo build --target=wasm32-wasi --release || exit 1
+) || exit 1
+
+### Copy filter to wasm/ #######################################################
+
+mkdir -p wasm
+
+cp -a ../target/wasm32-wasi/release/*.wasm ../*.meta.json wasm/
+
+script_dir=$(dirname $(realpath $0))
+
+### Start container ############################################################
+
+message "Setting up the Kong Gateway container..."
+
+docker stop $DEMO_KONG_CONTAINER
+docker rm $DEMO_KONG_CONTAINER
+
+# Config trick to access localhost in a local Docker test,
+# in case you want to edit your config/demo.yml to target
+# a localhost server rather than httpbin.org:
+#
+# access_localhost="--add-host=host.docker.internal:$(ip -j address | jq -r '[ .[] | select(.ifname | test("^[ew]")) | .addr_info[] | select(.family == "inet") | .local ][0]')"
+access_localhost=""
+
+docker run -d --name "$DEMO_KONG_CONTAINER" \
+    $access_localhost \
+    -v "$script_dir/config:/kong/config/" \
+    -v "$script_dir/wasm:/wasm" \
+    -e "KONG_LOG_LEVEL=info" \
+    -e "KONG_DATABASE=off" \
+    -e "KONG_DECLARATIVE_CONFIG=/kong/config/demo.yml" \
+    -e "KONG_NGINX_WASM_SHM_KV_KONG_WASM_RATE_LIMITING_COUNTERS=12m" \
+    -e "KONG_PROXY_ACCESS_LOG=/dev/stdout" \
+    -e "KONG_PROXY_ERROR_LOG=/dev/stderr" \
+    -e "KONG_WASM=on" \
+    -e "KONG_WASM_FILTERS_PATH=/wasm" \
+    -p 8000:8000 \
+    -p 8443:8443 \
+    -p 8001:8001 \
+    -p 8444:8444 \
+     "$DEMO_KONG_IMAGE"
+
+### Show configuration #########################################################
+
+message "This is the configuration loaded into Kong:"
+
+cat config/demo.yml
+
+sleep 5
+
+### Issue requests #############################################################
+
+message "Now let's send a request to see the filter in effect:"
+
+http :8000/anything
+
+message "Finishing up!"
+
+docker stop $DEMO_KONG_CONTAINER
+#docker rm $DEMO_KONG_CONTAINER
+