added rocketmq

pom.xml

@@ -44,6 +44,17 @@
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
 
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.rocketmq</groupId>
+            <artifactId>rocketmq-spring-boot-starter</artifactId>
+            <version>2.3.4</version>
+        </dependency>
+
         <dependency>
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>

src/main/java/com/ljc42/product/Controller/ProductController.java

@@ -1,8 +1,9 @@
 package com.ljc42.product.Controller;
 
+import com.ljc42.product.DTO.ProductDTO;
+import com.ljc42.product.DTO.ResponseDTO;
 import com.ljc42.product.Exceptions.ProductExitsException;
 import com.ljc42.product.Exceptions.ProductNotFoundException;
-import com.ljc42.product.Model.Product;
 import com.ljc42.product.Service.ProductService;
 import org.json.JSONObject;
 import org.springframework.http.HttpStatus;
@@ -22,40 +23,34 @@ public class ProductController {
     }
 
     @GetMapping("/api/v1/product/{name}")
-    public ResponseEntity<Map<String,Object>> getProducts(@PathVariable String name) {
+    public ResponseEntity<ResponseDTO> getProducts(@PathVariable String name) {
         try {
-            Product product = this.productService.getProductByName(name);
-            JSONObject jsonProduct = new JSONObject();
-            jsonProduct.put("name", product.getName());
-            jsonProduct.put("price", product.getPrice());
-            jsonProduct.put("stock", product.getStock());
-            JSONObject responseBody = new JSONObject();
-            responseBody.put("code", 200);
-            responseBody.put("product", jsonProduct);
-            responseBody.put("message", "Product retrieved");
-            return new ResponseEntity<>(responseBody.toMap(), HttpStatus.OK);
+            ProductDTO productDTO = this.productService.getProductByName(name);
+            return new ResponseEntity<>(new ResponseDTO(200,"Product retrieved", productDTO), HttpStatus.OK);
         } catch (ProductNotFoundException e) {
-            JSONObject responseBody = new JSONObject();
-            responseBody.put("code", 404);
-            responseBody.put("message", e.getMessage());
-            return new ResponseEntity<>(responseBody.toMap(), HttpStatus.NOT_FOUND);
+            return new ResponseEntity<>(new ResponseDTO(404,e.getMessage()), HttpStatus.NOT_FOUND);
         }
     }
 
     @PostMapping("/api/v1/product/create")
-    public ResponseEntity<Map<String, Object>> createProducts(@RequestBody Product product) {
+    public ResponseEntity<ResponseDTO> createProducts(@RequestBody ProductDTO productDTO) {
         try {
-            this.productService.createProduct(product);
-            JSONObject responseBody = new JSONObject();
-            responseBody.put("code", 201);
-            responseBody.put("name", product.getName());
-            responseBody.put("message", "Product created");
-            return new ResponseEntity<>(responseBody.toMap(),HttpStatus.CREATED);
+            ProductDTO createdDTO = this.productService.createProduct(productDTO);
+            return new ResponseEntity<>(new ResponseDTO(201,"Product created",createdDTO),HttpStatus.CREATED);
         } catch (ProductExitsException e) {
-            JSONObject responseBody = new JSONObject();
-            responseBody.put("code", 409);
-            responseBody.put("message", e.getMessage());
-            return new ResponseEntity<>(responseBody.toMap(),HttpStatus.CONFLICT);
+            return new ResponseEntity<>(new ResponseDTO(409,e.getMessage()),HttpStatus.CONFLICT);
         }
     }
+
+    @PutMapping("/api/v1/product/update")
+    public ResponseEntity<ResponseDTO> updateProducts(@RequestBody ProductDTO productDTO){
+        try {
+            ProductDTO updatedDTO = this.productService.updateProduct(productDTO);
+            return new ResponseEntity<>(new ResponseDTO(200,"Product updated",updatedDTO),HttpStatus.OK);
+        } catch (ProductNotFoundException e) {
+            return new ResponseEntity<>(new ResponseDTO(404,e.getMessage()),HttpStatus.NOT_FOUND);
+        }
+
+    }
+
 }

src/main/java/com/ljc42/product/DTO/DTO.java

@@ -0,0 +1,4 @@
+package com.ljc42.product.DTO;
+
+public class DTO {
+}

src/main/java/com/ljc42/product/DTO/ProductDTO.java

@@ -0,0 +1,40 @@
+package com.ljc42.product.DTO;
+
+public class ProductDTO extends DTO{
+    private String name;
+    private Double price;
+    private Integer stock;
+
+    public ProductDTO() {
+    }
+
+    public ProductDTO(String name, Double price, Integer stock) {
+        this.name = name;
+        this.price = price;
+        this.stock = stock;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public Integer getStock() {
+        return stock;
+    }
+
+    public void setStock(Integer stock) {
+        this.stock = stock;
+    }
+}

src/main/java/com/ljc42/product/DTO/ResponseDTO.java

@@ -0,0 +1,36 @@
+package com.ljc42.product.DTO;
+
+public class ResponseDTO extends DTO{
+    private int code;
+    private String message;
+    private DTO data;
+    public ResponseDTO(int code, String message, DTO data) {
+        this.code = code;
+        this.message = message;
+        this.data = data;
+    }
+    public ResponseDTO(int code, String message) {
+        this.code = code;
+        this.message = message;
+        this.data = null;
+    }
+    public int getCode() {
+        return code;
+    }
+    public String getMessage() {
+        return message;
+    }
+    public Object getData() {
+        return data;
+    }
+
+    public void setCode(int code) {
+        this.code = code;
+    }
+    public void setMessage(String message) {
+        this.message = message;
+    }
+    public void setData(DTO data) {
+        this.data = data;
+    }
+}

src/main/java/com/ljc42/product/Listener.java

@@ -0,0 +1,17 @@
+package com.ljc42.product;
+
+import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
+import org.apache.rocketmq.spring.core.RocketMQListener;
+import org.springframework.stereotype.Service;
+
+@Service
+@RocketMQMessageListener(
+        topic = "PRODUCT_CREATE_TOPIC",
+        consumerGroup = "PRODUCT_CREATE_GROUP"
+)
+public class Listener implements RocketMQListener<String> {
+    @Override
+    public void onMessage(String s) {
+        System.out.println("downstream service is creating index for product: " + s);
+    }
+}

src/main/java/com/ljc42/product/Mapper/ProductMapper.java

@@ -0,0 +1,22 @@
+package com.ljc42.product.Mapper;
+
+import com.ljc42.product.DTO.ProductDTO;
+import com.ljc42.product.Model.Product;
+
+public class ProductMapper {
+    public static ProductDTO ProductToDTO(Product product) {
+        ProductDTO productDTO = new ProductDTO();
+        productDTO.setName(product.getName());
+        productDTO.setPrice(product.getPrice());
+        productDTO.setStock(product.getStock());
+        return productDTO;
+    }
+
+    public static Product DTOtoProduct(ProductDTO productDTO) {
+        Product product = new Product();
+        product.setName(productDTO.getName());
+        product.setPrice(productDTO.getPrice());
+        product.setStock(productDTO.getStock());
+        return product;
+    }
+}

src/main/java/com/ljc42/product/Model/Product.java

@@ -4,19 +4,21 @@ import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.Id;
 
+import java.io.Serializable;
+
 @Entity
-public class Product {
+public class Product implements Serializable {
     private @Id
     @GeneratedValue Long id;
     private String name;
-    private double price;
-    private int stock;
+    private Double price;
+    private Integer stock;
 
     public Product() {
 
     }
 
-    public Product(String name, double price, int stock) {
+    public Product(String name, Double price, Integer stock) {
         this.name = name;
         this.price = price;
         this.stock = stock;
@@ -30,19 +32,19 @@ public class Product {
         this.name = name;
     }
 
-    public double getPrice() {
+    public Double getPrice() {
         return price;
     }
 
-    public void setPrice(double price) {
+    public void setPrice(Double price) {
         this.price = price;
     }
 
-    public int getStock() {
+    public Integer getStock() {
         return stock;
     }
 
-    public void setStock(int stock) {
+    public void setStock(Integer stock) {
         this.stock = stock;
     }
 }

src/main/java/com/ljc42/product/RedisConfig.java

@@ -0,0 +1,23 @@
+package com.ljc42.product;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+
+@Configuration
+public class RedisConfig {
+    @Bean
+    LettuceConnectionFactory connectionFactory() {
+        return new LettuceConnectionFactory();
+    }
+
+    @Bean
+    RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
+
+        RedisTemplate<String, Object> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+        return template;
+    }
+}

src/main/java/com/ljc42/product/RocketMQConfig.java

@@ -0,0 +1,9 @@
+package com.ljc42.product;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RocketMQConfig {
+
+}

src/main/java/com/ljc42/product/Service/ProductService.java

@@ -1,31 +1,72 @@
 package com.ljc42.product.Service;
 
+import com.ljc42.product.DTO.ProductDTO;
 import com.ljc42.product.Exceptions.ProductNotFoundException;
+import com.ljc42.product.Mapper.ProductMapper;
 import com.ljc42.product.Model.Product;
 import com.ljc42.product.Repository.ProductRepository;
 import com.ljc42.product.Exceptions.ProductExitsException;
+import org.apache.rocketmq.spring.core.RocketMQTemplate;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Service;
 
+import java.util.Objects;
+import java.util.concurrent.TimeUnit;
+
 @Service
 public class ProductService {
 
     @Autowired
     private ProductRepository productRepository;
 
-    public void createProduct(Product product) throws ProductExitsException{
-        if(productRepository.existsByName(product.getName())) {
+    @Autowired
+    private RedisTemplate<String, Object> redisTemplate;
+
+    @Autowired
+    private RocketMQTemplate rocketMQTemplate;
+
+    public ProductDTO createProduct(ProductDTO productDTO) throws ProductExitsException{
+        if(productRepository.existsByName(productDTO.getName())) {
             throw new ProductExitsException("Product with the same name already exists");
         } else {
-            this.productRepository.save(product);
+            redisTemplate.delete(productDTO.getName());
+            this.productRepository.save(ProductMapper.DTOtoProduct(productDTO));
+            rocketMQTemplate.getProducer().setSendMsgTimeout(10000);
+            rocketMQTemplate.convertAndSend("PRODUCT_CREATE_TOPIC", productDTO.getName());
+            return productDTO;
         }
     }
 
-    public Product getProductByName(String name) throws ProductNotFoundException {
+    public ProductDTO getProductByName(String name) throws ProductNotFoundException {
+        if(redisTemplate.hasKey(name)) {
+            return ProductMapper.ProductToDTO((Product) Objects.requireNonNull(redisTemplate.opsForValue().get(name)));
+        }
         if(productRepository.existsByName(name)) {
-            return productRepository.findByName(name);
+            Product product = productRepository.findByName(name);
+            redisTemplate.opsForValue().set(name, product);
+            redisTemplate.expire(name,5, TimeUnit.MINUTES);
+            return ProductMapper.ProductToDTO(product);
         } else {
             throw new ProductNotFoundException("Product not found");
         }
     }
+
+    public ProductDTO updateProduct(ProductDTO productDTO) throws ProductNotFoundException {
+        if(productRepository.existsByName(productDTO.getName())) {
+            redisTemplate.delete(productDTO.getName());
+            Product product = productRepository.findByName(productDTO.getName());
+            if(productDTO.getPrice() != null) {
+                product.setPrice(productDTO.getPrice());
+            }
+            if(productDTO.getStock() != null) {
+                product.setStock(productDTO.getStock());
+            }
+            productRepository.save(product);
+            return ProductMapper.ProductToDTO(product);
+        } else {
+            throw new ProductNotFoundException("Product not found");
+        }
+
+    }
 }

src/main/resources/application.properties

@@ -5,3 +5,9 @@ spring.datasource.driver-class-name=org.h2.Driver
 spring.datasource.username=sa
 spring.datasource.password=password
 spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+
+spring.redis.host=localhost
+spring.redis.port=6379
+
+rocketmq.name-server=localhost:9876
+rocketmq.producer.group=my_producer_group