use config file with CURL loader (#53)

examples/docker-compose.yml

@@ -33,13 +33,13 @@ services:
           - ext-payment-2
   loader:
     image: ghcr.io/cisco-open/app-simulator-loaders-curl:latest
+    pull_policy: build
     build:
       context: ../src/loaders/curl
       dockerfile: Dockerfile
-    environment:
-      - URLS=https://frontend:8080/addtocart http://frontend:8080/checkout
-      - SLEEP=5
-      - WAIT=1
+    volumes:
+      - ./loader.json:/config.json
+
 #  backend-db:
 #    image: ghcr.io/cisco-open/app-simulator-databases-mysql:latest
 #    build:
@@ -50,4 +50,4 @@ services:
 #    volumes:
 #     - ./backend-db.json:/config.json
 networks:
-  default:
+  default:

examples/loader.json

@@ -0,0 +1,8 @@
+{
+   "sleep" : 5,
+   "urls" : [
+      "https://frontend:8080/addtocart",
+      "http://frontend:8080/checkout"
+   ],
+   "wait" : 1
+}

src/loaders/curl/Dockerfile

@@ -4,8 +4,8 @@ LABEL org.opencontainers.image.source=https://github.com/cisco-open/app-simulato
 LABEL org.opencontainers.image.description="curl loader for app-simulator"
 LABEL org.opencontainers.image.licenses=BSD-3-Clause
 
-RUN apk add --no-cache curl util-linux
+RUN apk add --no-cache curl util-linux jq
 WORKDIR /usr/bin/
-COPY loader.sh /usr/bin
-RUN chmod +x /usr/bin/loader.sh
-ENTRYPOINT ["/usr/bin/loader.sh"]
+COPY entrypoint.sh /usr/bin
+RUN chmod +x /usr/bin/entrypoint.sh
+ENTRYPOINT ["/usr/bin/entrypoint.sh"]

src/loaders/curl/entrypoint.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+LOADER_CONFIG="/config.json"
+
+# Check if the file exists
+if [[ ! -f "${LOADER_CONFIG}" ]]; then
+  echo "Warning: $LOADER_CONFIG not found! Environment variables will be used instead."
+else
+  SLEEP=$(jq -r '.sleep' "$LOADER_CONFIG")
+  WAIT=$(jq -r '.wait' "$LOADER_CONFIG")
+  URLS=$(jq -r '.urls | join(" ")' "$LOADER_CONFIG")
+fi
+
+
+# Check if SLEEP and WAIT are numbers
+if ! [[ "${SLEEP}" =~ ^[0-9]+$ ]]; then
+  echo "Error: SLEEP is not a valid number: $SLEEP"
+  exit 1
+fi
+
+if ! [[ "${WAIT}" =~ ^[0-9]+$ ]]; then
+  echo "Error: WAIT is not a valid number: $WAIT"
+  exit 1
+fi
+
+echo "Running CURL load in ${WAIT} seconds ..."
+echo "URLs to test"
+echo "${URLS}"
+echo "Sleep time in between requests ${SLEEP}"
+sleep "${WAIT}"
+while true; do
+	ID=$(uuidgen)
+	for URL in ${URLS}; do
+		/usr/bin/curl -s "${URL}?unique_session_id=${ID}"
+	done
+	sleep "${SLEEP}"
+done