-initial commit

.gitignore

@@ -0,0 +1,38 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

api-gateway/.gitignore

@@ -0,0 +1,38 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

api-gateway/Dockerfile

@@ -0,0 +1,3 @@
+FROM openjdk:17
+COPY target/*.jar app.jar
+ENTRYPOINT ["java", "-jar", "/app.jar"]

api-gateway/Dockerfile.layered

@@ -0,0 +1,15 @@
+FROM eclipse-temurin:17.0.4.1_1-jre as builder
+WORKDIR extracted
+ADD target/*.jar app.jar
+RUN java -Djarmode=layertools -jar app.jar extract
+
+
+
+FROM eclipse-temurin:17.0.4.1_1-jre
+WORKDIR application
+COPY --from=builder extracted/dependencies/ ./
+COPY --from=builder extracted/spring-boot-loader/ ./
+COPY --from=builder extracted/snapshot-dependencies/ ./
+COPY --from=builder extracted/application/ ./
+EXPOSE 8080
+ENTRYPOINT ["java", "org.springframework.boot.loader.JarLauncher"]

api-gateway/pom.xml

@@ -0,0 +1,64 @@
+<?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>
+    <parent>
+        <groupId>org.pcdev.shop</groupId>
+        <artifactId>microservices</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>api-gateway</artifactId>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <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>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-oauth2-resource-server</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</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>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+
+
+    </dependencies>
+
+</project>

api-gateway/src/main/java/com/pcdev/apigateway/ApiGatewayApplication.java

@@ -0,0 +1,13 @@
+package com.pcdev.apigateway;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+
+@SpringBootApplication
+@EnableDiscoveryClient
+public class ApiGatewayApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(ApiGatewayApplication.class, args);
+    }
+}

api-gateway/src/main/java/com/pcdev/apigateway/config/SecurityConfig.java

@@ -0,0 +1,28 @@
+package com.pcdev.apigateway.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
+import org.springframework.security.config.web.server.ServerHttpSecurity;
+import org.springframework.security.web.server.SecurityWebFilterChain;
+
+@Configuration
+@EnableWebFluxSecurity //because we are using spring-cloud-starter-gateway for this api gateway. This is
+// a spring webflux project not spring mvc project. So we need to enable webflux security annotation
+public class SecurityConfig {
+
+
+    @Bean
+    public SecurityWebFilterChain securityWebFilterChain(ServerHttpSecurity serverHttpSecurity) {
+        serverHttpSecurity
+                .csrf(ServerHttpSecurity.CsrfSpec::disable)
+                .authorizeExchange(exchange -> exchange
+                        .pathMatchers("/eureka/**")
+                        .permitAll()
+                        .anyExchange()
+                        .authenticated())
+                .oauth2ResourceServer(ServerHttpSecurity.OAuth2ResourceServerSpec::jwt); //to enable resource server capabilities as well as JWT security
+        return serverHttpSecurity.build();
+    }
+
+}

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

@@ -0,0 +1,4 @@
+server.port=8080
+eureka.client.serviceUrl.defaultZone=http://eureka:password@discovery-server:8761/eureka
+spring.security.oauth2.resourceserver.jwt.issuer-uri=http://keycloak:8080/realms/online-shopping-app-realm
+spring.zipkin.base-url=http://zipkin:9411

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

@@ -0,0 +1,35 @@
+eureka.client.serviceUrl.defaultZone=http://eureka:password@localhost:8761/eureka
+spring.application.name=api-gateway
+logging.level.root=INFO
+logging.level.org.springframework.cloud.gateway.route.RouteDefinitionLocator=INFO
+logging.level.org.springframework.cloud.gateway=TRACE
+
+#Product Service Route
+spring.cloud.gateway.routes[0].id=product-service
+spring.cloud.gateway.routes[0].uri=lb://product-service
+spring.cloud.gateway.routes[0].predicates[0]=Path=/api/product
+
+#Order Service Route
+spring.cloud.gateway.routes[1].id=order-service
+spring.cloud.gateway.routes[1].uri=lb://order-service
+spring.cloud.gateway.routes[1].predicates[0]=Path=/api/order
+
+#Discovery Server Route
+spring.cloud.gateway.routes[2].id=discovery-server
+spring.cloud.gateway.routes[2].uri=http://localhost:8761
+spring.cloud.gateway.routes[2].predicates[0]=Path=/eureka/web
+spring.cloud.gateway.routes[2].filters[0]=SetPath=/
+
+#Discovery Server Static Resources Route
+spring.cloud.gateway.routes[3].id=discovery-server-static
+spring.cloud.gateway.routes[3].uri=http://localhost:8761
+spring.cloud.gateway.routes[3].predicates[0]=Path=/eureka/**
+
+
+spring.security.oauth2.resourceserver.jwt.issuer-uri=http://localhost:8181/realms/spring-boot-microservices-realm
+
+
+management.tracing.sampling.probability=1.0
+
+#Actuator Prometheus Endpoint
+management.endpoints.web.exposure.include= prometheus

discovery-server/.gitignore

@@ -0,0 +1,38 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store