fwbrasil: fix warmup to avoid OOM (zanfranceschi#1649)

participantes/fwbrasil/docker-compose.yaml

@@ -30,10 +30,15 @@ services:
       retries: 999
 
   warmup:
-    image: grafana/k6:latest
+    image: registry.access.redhat.com/ubi9/ubi:9.3-1610
     volumes:
-      - ./warmup/warmup.js:/opt/warmup.js
-    command: run /opt/warmup.js
+      - ./warmup/warmup.sh:/opt/warmup.sh
+    command: ./opt/warmup.sh
+    deploy:
+      resources:
+        limits:
+          cpus: "0.3"
+          memory: "10MB"
     network_mode: host
     depends_on:
       api01:

participantes/fwbrasil/warmup/warmup.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# URLs
+transactionUrl1="http://localhost:8081/clientes/0/transacoes"
+extratoUrl1="http://localhost:8081/clientes/0/extrato"
+transactionUrl2="http://localhost:8082/clientes/0/transacoes"
+extratoUrl2="http://localhost:8082/clientes/0/extrato"
+
+# Headers
+contentType="Content-Type: application/json"
+
+# Initialize counter
+counter=0
+batchSize=10  # Control the concurrency level
+
+# Debug message
+echo "Starting warmup..."
+
+# Start time
+start=$SECONDS
+
+# Loop for approximately 10 seconds
+while [ $(($SECONDS - $start)) -lt 10 ]; do
+    activeJobs=$(jobs -p | wc -l)
+    if [ "$activeJobs" -lt "$batchSize" ]; then
+        # Increment counter
+        ((counter++))
+
+        # Alternating transaction type for each iteration
+        transactionType=$([ $(($counter % 2)) -eq 0 ] && echo "c" || echo "d")
+
+        payload="{\"valor\": 1, \"tipo\": \"$transactionType\", \"descricao\": \"warmup\"}"
+
+        # Execute curl commands in parallel & silently
+        curl -s -X POST -H "$contentType" -d "$payload" "$transactionUrl1" --max-time 1 > /dev/null 2>&1 &
+        curl -s -X POST -H "$contentType" -d "$payload" "$transactionUrl2" --max-time 1 > /dev/null 2>&1 &
+        curl -s -X GET "$extratoUrl1" --max-time 1 > /dev/null 2>&1 &
+        curl -s -X GET "$extratoUrl2" --max-time 1 > /dev/null 2>&1 &
+
+        if [ $(($counter % 100)) -eq 0 ]; then
+            echo "Executed $counter requests..."
+        fi
+    fi
+done
+
+wait # Wait for all background jobs to finish
+
+echo "Warmup completed. Total requests: $counter"