Patterns

api-gateway/Dockerfile

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+FROM eclipse-temurin:21-jdk-alpine
+LABEL authors="iakovlysenko"
+VOLUME /tmp
+ARG JAR_FILE=target/api-gateway-1.0-SNAPSHOT.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]

api-gateway/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.project.iakov</groupId>
+    <artifactId>api-gateway</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.5</version>
+        <relativePath/>
+    </parent>
+
+    <properties>
+        <java.version>21</java.version>
+        <spring-cloud.version>2023.0.1</spring-cloud.version>
+    </properties>
+
+    <build>
+        <plugins>
+            <!-- Maven Plugin -->
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>3.2.5</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+                <configuration>
+                    <source>21</source>
+                    <target>21</target>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                            <version>1.18.38</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-gateway</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+        </dependency>
+    </dependencies>
+</project>

api-gateway/src/main/java/ru/project/iakov/apigateway/ApiGatewayApplication.java

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+package ru.project.iakov.apigateway;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ApiGatewayApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(ApiGatewayApplication.class, args);
+    }
+}

api-gateway/src/main/resources/application-docker.yml

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+server:
+  port: 8080
+
+spring:
+  application:
+    name: api-gateway
+  cloud:
+    gateway:
+      routes:
+        - id: user-service
+          uri: lb://user-service
+          predicates:
+            - Path=/users/**
+        - id: notification-service
+          uri: lb://notification-service
+          predicates:
+            - Path=/api/v1/email/**
+  config:
+    import: optional:configserver:http://config-server:8888
+eureka:
+  client:
+    service-url:
+      defaultZone: http://discovery-server:8761/eureka

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

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+server:
+  port: 8082
+spring:
+  application:
+    name: api-gateway
+  cloud:
+    gateway:
+      routes:
+        - id: user-service
+          uri: lb://user-service
+          predicates:
+            - Path=/users/**
+        - id: notification-service
+          uri: lb://notification-service
+          predicates:
+            - Path=/api/v1/email/**
+  config:
+    import: optional:configserver:http://localhost:8888
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://localhost:8761/eureka

api-gateway/target/classes/application.yml

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+server:
+  port: 8082
+spring:
+  application:
+    name: api-gateway
+  cloud:
+    gateway:
+      routes:
+        - id: user-service
+          uri: lb://user-service
+          predicates:
+            - Path=/users/**
+        - id: notification-service
+          uri: lb://notification-service
+          predicates:
+            - Path=/api/v1/email/**
+  config:
+    import: optional:configserver:http://localhost:8888
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://localhost:8761/eureka

config-repo/application.yml

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+eureka:
+  client:
+    register-with-eureka: true
+    fetch-registry: true
+    service-url:
+      defaultZone: http://discovery-server:8761/eureka/
+
+spring:
+  application:
+    name: default

config-repo/config-server.yml

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+server:
+  port: 8888
+
+spring:
+  application:
+    name: config-server

config-repo/notification-service.yml

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+server:
+  port: 8082
+
+spring:
+  application:
+    name: notification-service
+  mail:
+    host: smtp.mail.ru
+    port: 465
+    username: ${EMAIL_USERNAME}
+    password: ${EMAIL_PASSWORD}
+    properties:
+      mail:
+        smtp:
+          auth: true
+          starttls:
+            enable: true
+
+kafka:
+  topic: user-events

config-repo/user-service.yml

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+server:
+  port: 8081
+
+spring:
+  application:
+    name: user-service
+  datasource:
+    url: jdbc:postgresql://postgres:5432/postgres
+    username: postgres
+    password: postgres
+  jpa:
+    hibernate:
+      ddl-auto: update
+    show-sql: true
+    properties:
+      hibernate:
+        format_sql: true

config-server/Dockerfile

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+FROM eclipse-temurin:21-jdk-alpine
+LABEL authors="iakovlysenko"
+VOLUME /tmp
+ARG JAR_FILE=target/config-server-1.0-SNAPSHOT.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]

config-server/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.project.iakov</groupId>
+    <artifactId>config-server</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.5</version>
+        <relativePath/>
+    </parent>
+
+    <properties>
+        <java.version>21</java.version>
+        <spring-cloud.version>2023.0.1</spring-cloud.version>
+    </properties>
+
+    <build>
+        <plugins>
+            <!-- Maven Plugin -->
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>3.2.5</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+                <configuration>
+                    <source>21</source>
+                    <target>21</target>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                            <version>1.18.38</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-config-server</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+        </dependency>
+    </dependencies>
+</project>

config-server/src/main/java/ru/project/iakov/configserver/ConfigServerApplication.java

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+package ru.project.iakov.configserver;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.config.server.EnableConfigServer;
+
+@SpringBootApplication
+@EnableConfigServer
+public class ConfigServerApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(ConfigServerApplication.class, args);
+    }
+}

config-server/src/main/resources/application-docker.yml

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+server:
+  port: 8888
+
+spring:
+  cloud:
+    config:
+      server:
+        native:
+          search-locations: file:/config
+
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://discovery-server:8761/eureka/

config-server/src/main/resources/application.yml

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+server:
+  port: 8888
+spring:
+  application:
+    name: config-server
+  cloud:
+    config:
+      server:
+        git:
+          uri: file:/config
+eureka:
+  client:
+    service-url:
+      defaultZone: http://localhost:8761/eureka

config-server/target/classes/application.yml

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+server:
+  port: 8888
+spring:
+  application:
+    name: config-server
+  cloud:
+    config:
+      server:
+        git:
+          uri: file:/config
+eureka:
+  client:
+    service-url:
+      defaultZone: http://localhost:8761/eureka

discovery-server/Dockerfile

@@ -0,0 +1,6 @@
+FROM eclipse-temurin:21-jdk-alpine
+LABEL authors="iakovlysenko"
+VOLUME /tmp
+ARG JAR_FILE=target/discovery-server-1.0-SNAPSHOT.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]