Claude
def73fa1c4
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
71 lines
2.9 KiB
Plaintext
71 lines
2.9 KiB
Plaintext
# order-service -> inventory-service behind a Resilience4j circuit breaker (4-call window, 50% threshold, 5 s open)
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--- healthy: circuit state, then one order ---
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$ curl -X GET localhost:8080/api/orders/circuit
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HTTP 200
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{"state":"CLOSED","failedCalls":0,"notPermittedCalls":0}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":3,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"CONFIRMED"}
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--- switch inventory-service to failing (POST /inventory/chaos?down=true), then place 4 orders ---
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$ curl -X POST localhost:8080/api/inventory/chaos?down=true
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HTTP 200
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{"down":true}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":4,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"PENDING_INVENTORY"}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":5,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"PENDING_INVENTORY"}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":6,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"PENDING_INVENTORY"}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":7,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"PENDING_INVENTORY"}
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$ curl -X GET localhost:8080/api/orders/circuit
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HTTP 200
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{"state":"OPEN","failedCalls":2,"notPermittedCalls":2}
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--- circuit is OPEN: 2 more orders. inventory reserve calls before and after prove the calls were not even attempted ---
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$ curl -X GET localhost:8080/api/inventory/stats
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HTTP 200
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{"reserveCalls":8}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":8,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"PENDING_INVENTORY"}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":9,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"PENDING_INVENTORY"}
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$ curl -X GET localhost:8080/api/inventory/stats
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HTTP 200
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{"reserveCalls":8}
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$ curl -X GET localhost:8080/api/orders/circuit
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HTTP 200
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{"state":"OPEN","failedCalls":2,"notPermittedCalls":4}
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--- inventory-service recovers; wait 6 seconds (> the 5 s open window), then order again ---
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$ curl -X POST localhost:8080/api/inventory/chaos?down=false
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HTTP 200
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{"down":false}
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$ curl -X POST localhost:8080/api/orders -d '{"productId":1,"quantity":1}'
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HTTP 201
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{"id":10,"productId":1,"productName":"Mechanical keyboard","quantity":1,"total":89.90,"currency":"EUR","status":"CONFIRMED"}
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$ curl -X GET localhost:8080/api/orders/circuit
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HTTP 200
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{"state":"CLOSED","failedCalls":0,"notPermittedCalls":0}
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