Added Resilience (Circuit Breaker) for API Gateway with Monitoring (Prometheus, Grafana)

cloud-gateway-zone-2/src/main/resources/application.yml

@@ -15,26 +15,10 @@ spring:
   cloud:
     gateway:
       routes:
-        - id: invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: replica-invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: users-service-damascus-zone
-          uri: lb://users-service
-          predicates:
-            - Path=/users/**
         - id: invoicing-service-latakia-zone
           uri: lb://invoicing-service
           predicates:
             - Path=/invoices/**
-        - id: replica-invoicing-service-latakia-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
         - id: users-service-latakia-zone
           uri: lb://users-service
           predicates:

cloud-gateway-zone-2/target/classes/application.yml

@@ -15,26 +15,10 @@ spring:
   cloud:
     gateway:
       routes:
-        - id: invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: replica-invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: users-service-damascus-zone
-          uri: lb://users-service
-          predicates:
-            - Path=/users/**
         - id: invoicing-service-latakia-zone
           uri: lb://invoicing-service
           predicates:
             - Path=/invoices/**
-        - id: replica-invoicing-service-latakia-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
         - id: users-service-latakia-zone
           uri: lb://users-service
           predicates:

cloud-gateway/pom.xml

@@ -37,6 +37,15 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-circuitbreaker-reactor-resilience4j</artifactId>
+        </dependency>
     </dependencies>
     <dependencyManagement>
         <dependencies>

cloud-gateway/src/main/java/org/example/resources/FallbackMethod.java

+package org.example.resources;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RestController
+@RequestMapping("/")
+public class FallbackMethod {
+
+    @RequestMapping("users-fallback")
+    public String getUsersFallback(){
+        return "Users Service is temporary unavailable, Please Try Again Later";
+    }
+
+    @RequestMapping("invoicing-fallback")
+    public String getInvoicingFallback(){
+
+        return "Invoicing Service is temporary unavailable, Please Try Again Later";
+    }
+
+}
+

cloud-gateway/src/main/resources/application.yml

 server:
   port: 9090
-eureka:
-  client:
-    serviceUrl:
-      defaultZone: http://localhost:8761/eureka/
-      registerWithEureka: false
-    preferSameZoneEureka: true
-  instance:
-    metadataMap:
-      zone: damascus
 spring:
   application:
     name: api-gateway
   cloud:
     gateway:
       routes:
-        - id: invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: replica-invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: users-service-damascus-zone
-          uri: lb://users-service
-          predicates:
-            - Path=/users/**
-        - id: invoicing-service-latakia-zone
+        - id: invoicing-service
           uri: lb://invoicing-service
           predicates:
             - Path=/invoices/**
-        - id: replica-invoicing-service-latakia-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: users-service-latakia-zone
+          filters:
+            - name: CircuitBreaker
+              args:
+                name: invoicingCircuitBreaker
+                fallbackUri: forward:/invoicing-fallback
+        - id: users-service
           uri: lb://users-service
           predicates:
             - Path=/users/**
+          filters:
+            - name: CircuitBreaker
+              args:
+                name: usersCircuitBreaker
+                fallbackUri: forward:/users-fallback
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://localhost:8761/eureka/
+    registerWithEureka: true
+    fetch-registry: true
+    preferSameZoneEureka: true
+  instance:
+    metadataMap:
+      zone: damascus
+
+management:
+  health:
+    circuitbreakers:
+      enabled: true
+  endpoints:
+    web:
+      exposure:
+        include: health,prometheus
+  endpoint:
+    health:
+      show-details: always
+
+resilience4j:
+  circuitbreaker:
+    instances:
+      usersCircuitBreaker:
+        registerHealthIndicator: true
+        eventConsumerBufferSize: 10
+        failureRateThreshold: 80
+        minimumNumberOfCalls: 10
+        automaticTransitionFromOpenToHalfOpenEnabled: true
+        waitDurationInOpenState: 10s
+        permittedNumberOfCallsInHalfOpenState: 3
+        slidingWindowSize: 10
+        slidingWindowType: COUNT_BASED

cloud-gateway/target/classes/application.yml

 server:
   port: 9090
-eureka:
-  client:
-    serviceUrl:
-      defaultZone: http://localhost:8761/eureka/
-      registerWithEureka: false
-    preferSameZoneEureka: true
-  instance:
-    metadataMap:
-      zone: damascus
 spring:
   application:
     name: api-gateway
   cloud:
     gateway:
       routes:
-        - id: invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: replica-invoicing-service-damascus-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: users-service-damascus-zone
-          uri: lb://users-service
-          predicates:
-            - Path=/users/**
-        - id: invoicing-service-latakia-zone
+        - id: invoicing-service
           uri: lb://invoicing-service
           predicates:
             - Path=/invoices/**
-        - id: replica-invoicing-service-latakia-zone
-          uri: lb://invoicing-service
-          predicates:
-            - Path=/invoices/**
-        - id: users-service-latakia-zone
+          filters:
+            - name: CircuitBreaker
+              args:
+                name: invoicingCircuitBreaker
+                fallbackUri: forward:/invoicing-fallback
+        - id: users-service
           uri: lb://users-service
           predicates:
             - Path=/users/**
+          filters:
+            - name: CircuitBreaker
+              args:
+                name: usersCircuitBreaker
+                fallbackUri: forward:/users-fallback
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://localhost:8761/eureka/
+    registerWithEureka: true
+    fetch-registry: true
+    preferSameZoneEureka: true
+  instance:
+    metadataMap:
+      zone: damascus
+
+management:
+  health:
+    circuitbreakers:
+      enabled: true
+  endpoints:
+    web:
+      exposure:
+        include: health,prometheus
+  endpoint:
+    health:
+      show-details: always
+
+resilience4j:
+  circuitbreaker:
+    instances:
+      usersCircuitBreaker:
+        registerHealthIndicator: true
+        eventConsumerBufferSize: 10
+        failureRateThreshold: 80
+        minimumNumberOfCalls: 10
+        automaticTransitionFromOpenToHalfOpenEnabled: true
+        waitDurationInOpenState: 10s
+        permittedNumberOfCallsInHalfOpenState: 3
+        slidingWindowSize: 10
+        slidingWindowType: COUNT_BASED

docker-compose-desktop.yml

+version: '3'
+services:
+  prometheus:
+    image: prom/prometheus
+    container_name: prometheus
+    volumes:
+      - ./docker/prometheus-desktop.yml:/etc/prometheus/prometheus.yml
+    ports:
+      - "9092:9090"
+    networks:
+      - net
+  grafana:
+    image: grafana/grafana
+    container_name: grafana
+    env_file:
+      - ./docker/grafana.env
+    ports:
+      - "3000:3000"
+    networks:
+      - net
+networks:
+  net:
\ No newline at end of file

docker/grafana.env

+# [server]
+# GF_SERVER_DOMAIN=localhost
+# GF_SERVER_HTTP_PORT=3000
+# GF_SERVER_PROTOCOL=http
\ No newline at end of file

docker/prometheus-desktop.yml

+
+global:
+  scrape_interval:     15s # By default, scrape targets every 15 seconds.
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  external_labels:
+    monitor: 'resilience4j-monitor'
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: 5s
+
+    static_configs:
+      - targets: ['localhost:9090']
+
+  - job_name:       'Cloud-Gateway'
+
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: 5s
+
+    metrics_path: /actuator/prometheus
+
+    static_configs:
+      # Use the service name (see docker-compose-desktop.yml) instead of localhost
+      - targets: ['host.docker.internal:9090']

logs/latakia/invoicing-service.log

@@ -315,3 +315,42 @@ com.netflix.discovery.shared.transport.TransportException: Cannot execute reques
 2024-04-28 13:30:17.516 [main] INFO  o.e.InvoicingServiceZone2Application - Started InvoicingServiceZone2Application in 15.323 seconds (process running for 16.87)
 2024-04-28 13:33:38.275 [http-nio-8085-exec-1] INFO  o.example.resources.InvoiceResource - mark the invoice which has 2 invoiceId status as true (paid)
 2024-04-28 13:44:59.320 [http-nio-8085-exec-4] INFO  o.example.resources.InvoiceResource - mark the invoice which has 2 invoiceId status as true (paid)
+2024-05-02 15:24:46.616 [main] INFO  o.e.InvoicingServiceZone2Application - Starting InvoicingServiceZone2Application using Java 17 with PID 11344 (D:\Second Semester\Advanced DS\Practical\New folder\micro-services\invoicing-service-zone-2\target\classes started by dell in D:\Second Semester\Advanced DS\Practical\New folder\micro-services)
+2024-05-02 15:24:46.637 [main] DEBUG o.e.InvoicingServiceZone2Application - Running with Spring Boot v3.0.1, Spring v6.0.3
+2024-05-02 15:24:46.640 [main] INFO  o.e.InvoicingServiceZone2Application - No active profile set, falling back to 1 default profile: "default"
+2024-05-02 15:25:02.126 [main] INFO  o.e.InvoicingServiceZone2Application - Started InvoicingServiceZone2Application in 18.986 seconds (process running for 21.584)
+2024-05-02 15:33:56.259 [http-nio-8085-exec-3] INFO  o.example.resources.InvoiceResource - mark the invoice which has 2 invoiceId status as true (paid)
+2024-05-02 15:54:21.495 [SpringApplicationShutdownHook] ERROR c.netflix.discovery.DiscoveryClient - DiscoveryClient_INVOICING-SERVICE/localhost:invoicing-service:8085 - de-registration failedCannot execute request on any known server
+com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
+	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$2.execute(EurekaHttpClientDecorator.java:74)
+	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)
+	at com.netflix.discovery.DiscoveryClient.unregister(DiscoveryClient.java:916)
+	at com.netflix.discovery.DiscoveryClient.shutdown(DiscoveryClient.java:892)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:424)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeDestroyMethods(InitDestroyAnnotationBeanPostProcessor.java:382)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:212)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:191)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:184)
+	at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.destroy(GenericScope.java:389)
+	at org.springframework.cloud.context.scope.GenericScope.destroy(GenericScope.java:136)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:200)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1177)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1170)
+	at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1082)
+	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1051)
+	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.doClose(ServletWebServerApplicationContext.java:173)
+	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1001)
+	at org.springframework.boot.SpringApplicationShutdownHook.closeAndWait(SpringApplicationShutdownHook.java:139)
+	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
+	at org.springframework.boot.SpringApplicationShutdownHook.run(SpringApplicationShutdownHook.java:108)
+	at java.base/java.lang.Thread.run(Thread.java:833)

logs/latakia/replica-invoicing-service.log

@@ -353,3 +353,43 @@ java.lang.StringIndexOutOfBoundsException: begin -1, end 0, length 58
 	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
 	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 	at java.base/java.lang.Thread.run(Thread.java:833)
+2024-05-02 15:25:17.249 [main] INFO  o.e.ReplicaInvoicingServiceZone2Application - Starting ReplicaInvoicingServiceZone2Application using Java 17 with PID 13724 (D:\Second Semester\Advanced DS\Practical\New folder\micro-services\replica-invoicing-service-zone-2\target\classes started by dell in D:\Second Semester\Advanced DS\Practical\New folder\micro-services)
+2024-05-02 15:25:17.256 [main] DEBUG o.e.ReplicaInvoicingServiceZone2Application - Running with Spring Boot v3.0.1, Spring v6.0.3
+2024-05-02 15:25:17.259 [main] INFO  o.e.ReplicaInvoicingServiceZone2Application - No active profile set, falling back to 1 default profile: "default"
+2024-05-02 15:25:31.687 [main] INFO  o.e.ReplicaInvoicingServiceZone2Application - Started ReplicaInvoicingServiceZone2Application in 17.332 seconds (process running for 19.63)
+2024-05-02 15:31:48.263 [http-nio-8084-exec-2] INFO  o.example.resources.InvoiceResource - mark the invoice which has 2 invoiceId status as true (paid)
+2024-05-02 15:35:37.949 [http-nio-8084-exec-3] INFO  o.example.resources.InvoiceResource - Got all unpaid invoices
+2024-05-02 15:54:18.614 [SpringApplicationShutdownHook] ERROR c.netflix.discovery.DiscoveryClient - DiscoveryClient_INVOICING-SERVICE/localhost:invoicing-service:8084 - de-registration failedCannot execute request on any known server
+com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
+	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$2.execute(EurekaHttpClientDecorator.java:74)
+	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)
+	at com.netflix.discovery.DiscoveryClient.unregister(DiscoveryClient.java:916)
+	at com.netflix.discovery.DiscoveryClient.shutdown(DiscoveryClient.java:892)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:424)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeDestroyMethods(InitDestroyAnnotationBeanPostProcessor.java:382)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:212)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:191)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:184)
+	at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.destroy(GenericScope.java:389)
+	at org.springframework.cloud.context.scope.GenericScope.destroy(GenericScope.java:136)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:200)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1177)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1170)
+	at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1082)
+	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1051)
+	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.doClose(ServletWebServerApplicationContext.java:173)
+	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1001)
+	at org.springframework.boot.SpringApplicationShutdownHook.closeAndWait(SpringApplicationShutdownHook.java:139)
+	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
+	at org.springframework.boot.SpringApplicationShutdownHook.run(SpringApplicationShutdownHook.java:108)
+	at java.base/java.lang.Thread.run(Thread.java:833)

logs/latakia/users-service.log

@@ -503,3 +503,43 @@ org.springframework.web.client.HttpServerErrorException$InternalServerError: 500
 	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 	at java.base/java.lang.Thread.run(Thread.java:833)
 2024-04-28 13:47:00.036 [http-nio-8083-exec-10] INFO  org.example.resources.UserResource - paid invoice with 2 invoiceId for user has 1 userId
+2024-05-02 15:25:45.348 [main] INFO  o.e.UsersServiceZone2Application - Starting UsersServiceZone2Application using Java 17 with PID 9848 (D:\Second Semester\Advanced DS\Practical\New folder\micro-services\users-service-zone-2\target\classes started by dell in D:\Second Semester\Advanced DS\Practical\New folder\micro-services)
+2024-05-02 15:25:45.357 [main] DEBUG o.e.UsersServiceZone2Application - Running with Spring Boot v3.0.1, Spring v6.0.3
+2024-05-02 15:25:45.418 [main] INFO  o.e.UsersServiceZone2Application - No active profile set, falling back to 1 default profile: "default"
+2024-05-02 15:25:56.764 [main] INFO  o.e.UsersServiceZone2Application - Started UsersServiceZone2Application in 14.056 seconds (process running for 16.931)
+2024-05-02 15:31:48.344 [http-nio-8083-exec-1] INFO  org.example.resources.UserResource - paid invoice with 2 invoiceId for user has 1 userId
+2024-05-02 15:33:56.275 [http-nio-8083-exec-3] INFO  org.example.resources.UserResource - paid invoice with 2 invoiceId for user has 1 userId
+2024-05-02 15:54:22.498 [SpringApplicationShutdownHook] ERROR c.netflix.discovery.DiscoveryClient - DiscoveryClient_USERS-SERVICE/localhost:users-service:8083 - de-registration failedCannot execute request on any known server
+com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
+	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$2.execute(EurekaHttpClientDecorator.java:74)
+	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)
+	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)
+	at com.netflix.discovery.DiscoveryClient.unregister(DiscoveryClient.java:916)
+	at com.netflix.discovery.DiscoveryClient.shutdown(DiscoveryClient.java:892)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
+	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:424)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeDestroyMethods(InitDestroyAnnotationBeanPostProcessor.java:382)
+	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:212)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:191)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.run(DisposableBeanAdapter.java:184)
+	at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.destroy(GenericScope.java:389)
+	at org.springframework.cloud.context.scope.GenericScope.destroy(GenericScope.java:136)
+	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:200)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1177)
+	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520)
+	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1170)
+	at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1082)
+	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1051)
+	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.doClose(ServletWebServerApplicationContext.java:173)
+	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1001)
+	at org.springframework.boot.SpringApplicationShutdownHook.closeAndWait(SpringApplicationShutdownHook.java:139)
+	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
+	at org.springframework.boot.SpringApplicationShutdownHook.run(SpringApplicationShutdownHook.java:108)
+	at java.base/java.lang.Thread.run(Thread.java:833)

service-discovery/logs/application.log

@@ -12052,3 +12052,15 @@ java.lang.IllegalStateException: Client instance has been closed.
 2024-04-28 13:28:57.060 [main] DEBUG o.e.ServiceDiscoveryApplication - Running with Spring Boot v3.0.1, Spring v6.0.3
 2024-04-28 13:28:57.063 [main] INFO  o.e.ServiceDiscoveryApplication - No active profile set, falling back to 1 default profile: "default"
 2024-04-28 13:29:17.388 [main] INFO  o.e.ServiceDiscoveryApplication - Started ServiceDiscoveryApplication in 23.264 seconds (process running for 25.945)
+2024-05-02 15:23:32.168 [main] INFO  o.e.ServiceDiscoveryApplication - Starting ServiceDiscoveryApplication using Java 17 with PID 10488 (D:\Second Semester\Advanced DS\Practical\New folder\micro-services\service-discovery\target\classes started by dell in D:\Second Semester\Advanced DS\Practical\New folder\micro-services)
+2024-05-02 15:23:32.176 [main] DEBUG o.e.ServiceDiscoveryApplication - Running with Spring Boot v3.0.1, Spring v6.0.3
+2024-05-02 15:23:32.179 [main] INFO  o.e.ServiceDiscoveryApplication - No active profile set, falling back to 1 default profile: "default"
+2024-05-02 15:23:50.520 [main] INFO  o.e.ServiceDiscoveryApplication - Started ServiceDiscoveryApplication in 20.994 seconds (process running for 23.389)
+2024-05-02 17:26:05.631 [main] INFO  o.e.ServiceDiscoveryApplication - Starting ServiceDiscoveryApplication using Java 17 with PID 16264 (D:\Second Semester\Advanced DS\Practical\New folder\micro-services\service-discovery\target\classes started by dell in D:\Second Semester\Advanced DS\Practical\New folder\micro-services)
+2024-05-02 17:26:05.643 [main] DEBUG o.e.ServiceDiscoveryApplication - Running with Spring Boot v3.0.1, Spring v6.0.3
+2024-05-02 17:26:05.645 [main] INFO  o.e.ServiceDiscoveryApplication - No active profile set, falling back to 1 default profile: "default"
+2024-05-02 17:26:22.862 [main] INFO  o.e.ServiceDiscoveryApplication - Started ServiceDiscoveryApplication in 20.672 seconds (process running for 23.109)
+2024-05-02 18:51:46.934 [main] INFO  o.e.ServiceDiscoveryApplication - Starting ServiceDiscoveryApplication using Java 17 with PID 16232 (D:\Second Semester\Advanced DS\Practical\New folder\micro-services\service-discovery\target\classes started by dell in D:\Second Semester\Advanced DS\Practical\New folder\micro-services)
+2024-05-02 18:51:46.940 [main] DEBUG o.e.ServiceDiscoveryApplication - Running with Spring Boot v3.0.1, Spring v6.0.3
+2024-05-02 18:51:46.946 [main] INFO  o.e.ServiceDiscoveryApplication - No active profile set, falling back to 1 default profile: "default"
+2024-05-02 18:52:00.514 [main] INFO  o.e.ServiceDiscoveryApplication - Started ServiceDiscoveryApplication in 16.17 seconds (process running for 17.726)