Add spring-boot-microservices-project: config server, Eureka, gateway and three services on Boot 4.1.1 + Spring Cloud 2025.1.3

Product, order and inventory services behind Spring Cloud Gateway (WebMVC), configuration from a Config Server, discovery with Eureka, a Resilience4j circuit breaker on order -> inventory and Brave tracing. Run as six plain jars; output/ holds real transcripts (config, registry, requests, trace propagation, circuit breaker, startup race and the load-balanced RestClient.Builder trap). Dockerfile and docker-compose.yml are included but were not run. Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01HhW8LD8r3EigoBaCGrQZx5
2026-10-21 17:08:42 +00:00
commit def73fa1c4
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+# All six services on one network:   mvn -DskipTests package && docker compose up --build
+# NOT RUN when this repository was written (no Docker in the sandbox). The same system was run as plain jars with
+# scripts/start.sh, and everything in output/ comes from that. Inside the compose network the services reach each
+# other by service name, so only the three environment variables below differ from the jar run.
+x-service: &service
+  restart: on-failure          # a service that starts before the config server is up exits and is retried
+  environment: &env
+    CONFIG_URL: http://config-server:8888
+    EUREKA_URL: http://discovery-server:8761/eureka
+
+services:
+  config-server:
+    build: { context: ., args: { SERVICE: config-server } }
+    ports: ["8888:8888"]
+  discovery-server:
+    build: { context: ., args: { SERVICE: discovery-server } }
+    ports: ["8761:8761"]
+    environment: { EUREKA_HOSTNAME: discovery-server }
+  product-service:
+    <<: *service
+    build: { context: ., args: { SERVICE: product-service } }
+    environment: { <<: *env, EUREKA_HOSTNAME: product-service }
+    depends_on: [config-server, discovery-server]
+  inventory-service:
+    <<: *service
+    build: { context: ., args: { SERVICE: inventory-service } }
+    environment: { <<: *env, EUREKA_HOSTNAME: inventory-service }
+    depends_on: [config-server, discovery-server]
+  order-service:
+    <<: *service
+    build: { context: ., args: { SERVICE: order-service } }
+    environment: { <<: *env, EUREKA_HOSTNAME: order-service }
+    depends_on: [config-server, discovery-server]
+  gateway:
+    <<: *service
+    build: { context: ., args: { SERVICE: gateway } }
+    environment: { <<: *env, EUREKA_HOSTNAME: gateway }
+    ports: ["8080:8080"]
+    depends_on: [config-server, discovery-server]