How can I implement rsockets to a project with R2DBC in Spring? - spring

Question

I am doing a notifications project with reactive websockets / rsockets in Spring and Vue. But I have not been able to bind my ws to the database. I'm stuck, I need help.
This is my Entity (ProductDto and ProductRequestDto are the same syntax)
package com.example.productservice.entity;
import org.springframework.data.annotation.Id;
import lombok.Data;
import lombok.ToString;
#Data
#ToString
public class Products {
#Id
private Integer id;
private String description;
private Integer price;
private String subscriber;
public Products() {
}
//Getters And Setters
}
This is my repository
package com.example.productservice.repository;
import org.springframework.data.r2dbc.repository.Query;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import org.springframework.stereotype.Repository;
import com.example.productservice.entity.Products;
import reactor.core.publisher.Mono;
#Repository
public interface ProductRepository extends ReactiveCrudRepository<Products, Integer> {
#Query //Example of Query (Ignore this)
("insert into products values (null, :product, :price, :subscriber)")
Mono<Boolean> insert (String product, int price, String subscriber);
}
this is my service (I leave the complete code because I think it can be useful to someone)
package com.example.productservice.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.example.productservice.dto.ProductDto;
import com.example.productservice.repository.ProductRepository;
import com.example.productservice.util.EntityDtoUtil;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.core.publisher.Sinks;
#Service
public class ProductService {
#Autowired
private ProductRepository repository;
public Flux<ProductDto> getAll(){
return this.repository.findAll()
.map(EntityDtoUtil::toDto);
}
public Mono<ProductDto> getProductById(final int id){
return this.repository.findById(id)
.map(EntityDtoUtil::toDto);
}
public Mono<ProductDto> insertProduct(Mono<ProductDto> productDtoMono){
return productDtoMono
.map(EntityDtoUtil::toEntity)
.flatMap(this.repository::save)
.map(EntityDtoUtil::toDto);
}
public Mono<ProductDto> updateProduct(int id, Mono<ProductDto> productDtoMono){
return this.repository.findById(id)
.flatMap(p -> productDtoMono
.map(EntityDtoUtil::toEntity)
.doOnNext(e -> e.setId(id)))
.flatMap(this.repository::save)
.map(EntityDtoUtil::toDto);
}
public Mono<Void> deleteProduct (int id) {
return this.repository.deleteById(id);
}
}
and this is my Controller
package com.example.productservice.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.example.productservice.dto.ProductDto;
import com.example.productservice.service.ProductService;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
#RestController
#RequestMapping("product")
#CrossOrigin(origins= "*", methods = {RequestMethod.GET, RequestMethod.POST})
public class ProductController {
#Autowired
private ProductService service;
#GetMapping("all")
public Flux<ProductDto> all(){
return this.service.getAll();
}
#GetMapping("{id}")
public Mono<ResponseEntity<ProductDto>> getProductById(int id){
return this.service.getProductById(id)
.map(ResponseEntity::ok)
.defaultIfEmpty(ResponseEntity.notFound().build());
}
#PostMapping
public Mono<ProductDto> insertProductTable(#RequestBody Mono<ProductDto> productDtoMono){
return this.service.insertProduct(productDtoMono);
}
#PutMapping("{id}")
public Mono<ResponseEntity<ProductDto>> updateProduct(#PathVariable int id, #RequestBody Mono<ProductDto> productMonoDto) {
return this.service.updateProduct(id, productMonoDto)
.map(ResponseEntity::ok)
.defaultIfEmpty(ResponseEntity.notFound().build());
}
#DeleteMapping
public Mono<Void> deleteProduct(#PathVariable int id){
return this.service.deleteProduct(id);
}
}
So far is my original code functional in the traditional way. I have tried ways to implement rsockets that I leave here:
my applicattion.properties in server side
spring.rsocket.server.port=7000
spring.rsocket.server.transport=tcp
spring.r2dbc.url=r2dbc:mysql://localhost:3306/people2?options=DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
spring.r2dbc.username=root
spring.r2dbc.password=
Modification in ProductService
#Service
public class ProductService {
#Autowired
private ProductRepository repository;
#Autowired
//private Sinks.Many<ProductDto> sink;
#MessageMapping("repository.findAll")
public Flux<ProductDto> getAll(){
return this.repository.findAll()
.map(EntityDtoUtil::toDto);
}
Modification in ProductController client side
#RestController
#RequestMapping("product")
#CrossOrigin(origins= "*", methods = {RequestMethod.GET, RequestMethod.POST})
public class ProductController {
#Autowired
private ProductService service;
private RSocketRequester requester;
#GetMapping("all")
public Flux<ProductDto> all(){
this.requester.route("post.findAll")
.retrieveFlux(ProductDto.class);
return this.service.getAll();
}