✨refactor: centralize configuration management with shared yaml files

Author: Adnane Miliari

common/pom.xml

@@ -0,0 +1,38 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <parent>
+        <artifactId>demo-microservices</artifactId>
+        <groupId>dev.nano</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>common</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-tracing-bridge-brave</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.zipkin.reporter2</groupId>
+            <artifactId>zipkin-reporter-brave</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+    </dependencies>
+</project>

common/src/main/resources/shared-application-default.yml

@@ -0,0 +1,47 @@
+management:
+  observations:
+    key-values:
+      application: ${spring.application.name}
+  tracing:
+    sampling:
+      probability: 1.0
+    enabled: true
+  zipkin:
+    tracing:
+      endpoint: http://localhost:9411/api/v2/spans
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+  endpoint:
+    health:
+      show-details: always
+
+spring:
+  datasource:
+    url: jdbc:postgresql://localhost:5432/${spring.application.name}
+    username: postgres
+    password: password
+  jpa:
+    hibernate:
+      ddl-auto: create-drop
+    properties:
+      hibernate:
+        dialect: org.hibernate.dialect.PostgreSQLDialect
+        format_sql: true
+    show-sql: true
+    open-in-view: false
+  rabbitmq:
+    addresses: localhost:5672
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://localhost:8761/eureka
+    fetch-registry: true
+    register-with-eureka: true
+
+logging:
+  pattern:
+    correlation: "[${spring.application.name:},%X{traceId:-},%X{spanId:-}]"
+    level: "%5p ${logging.pattern.correlation} %c{1.} : %m%n"

common/src/main/resources/shared-application-docker.yml

@@ -0,0 +1,17 @@
+management:
+  zipkin:
+    tracing:
+      endpoint: http://zipkin:9411/api/v2/spans
+
+spring:
+  datasource:
+    url: jdbc:postgresql://postgres:5432/${spring.application.name}
+    username: miliariadnane
+    password: password
+  rabbitmq:
+    addresses: rabbitmq:5672
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://eureka-server:8761/eureka

common/src/main/resources/shared-application-eks.yml

@@ -0,0 +1,16 @@
+management:
+  zipkin:
+    tracing:
+      endpoint: http://zipkin:9411/api/v2/spans
+
+spring:
+  datasource:
+    url: jdbc:postgresql://demo-microservices.csetxdk14qax.us-east-1.rds.amazonaws.com:5432/${spring.application.name}
+    username: ${DB_USERNAME}
+    password: ${DB_PASSWORD}
+  rabbitmq:
+    addresses: rabbitmq:5672
+  jpa:
+    hibernate:
+      ddl-auto: update
+

common/src/main/resources/shared-application-kube.yml

@@ -0,0 +1,18 @@
+management:
+  zipkin:
+    tracing:
+      endpoint: http://zipkin:9411/api/v2/spans
+
+spring:
+  datasource:
+    url: jdbc:postgresql://postgres:5432/${spring.application.name}
+    username: miliariadnane
+    password: password
+  rabbitmq:
+    addresses: rabbitmq:5672
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://eureka-server:8761/eureka
+    enabled: false

customer/pom.xml

@@ -59,6 +59,11 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>dev.nano</groupId>
+            <artifactId>common</artifactId>
+            <version>${project.version}</version>
+        </dependency>
         <dependency>
             <groupId>dev.nano</groupId>
             <artifactId>amqp</artifactId>

customer/src/main/resources/application-docker.yml

@@ -1,48 +1,12 @@
-#Server
 server:
   port: 8001
   servlet:
     context-path: /customer
   error:
-      include-message: always
-#Management
-management:
-  endpoints:
-    web:
-      exposure:
-        include: "*"
-  endpoint:
-    health:
-      show-details: always
-#Spring
+    include-message: always
+
 spring:
   application:
     name: customer
-  datasource:
-    url: jdbc:postgresql://localhost:5432/customer
-    username: postgres
-    password: password
-  zipkin:
-    base-url: http://localhost:9411
-  rabbitmq:
-    addresses: localhost:5672 # not http, because is a message queue protocol
-  jpa:
-    hibernate:
-      ddl-auto: create-drop
-    properties:
-      hibernate:
-        dialect: org.hibernate.dialect.PostgreSQLDialect
-        format_sql: true
-    show-sql: true
-#Eureka-Client
-eureka:
-  client:
-    service-url:
-      defaultZone: http://localhost:8761/eureka
-    fetch-registry: true
-    register-with-eureka: true
-logging:
-  pattern:
-    # Logging pattern containing traceId and spanId; no longer provided through Sleuth by default
-    level: "%5p [${spring.application.name:},%X{traceId:-},%X{spanId:-}]"
-
+  config:
+    import: classpath:shared-application-${spring.profiles.active}.yml

customer/src/main/resources/application-eks.yml

@@ -1,21 +1,32 @@
 #Server
 server:
   port: 8761
+
 #Spring
 spring:
   application:
     name: eureka-server
-  zipkin:
-    baseUrl: http://zipkin:9411
+
 #Management
 management:
+  observations:
+    key-values:
+      application: ${spring.application.name}
+  tracing:
+    sampling:
+      probability: 1.0
+    enabled: true
+  zipkin:
+    tracing:
+      endpoint: http://zipkin:9411/api/v2/spans
   endpoints:
     web:
       exposure:
         include: "*"
   endpoint:
     health:
       show-details: always
+
 #Eureka-Server
 eureka:
   client: