Microservices architecture design using Zuul and Eureka - part 2

Microservices architecture design using Zuul and Eureka - part 2

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Module	Used For	Module Type	Port	Registered Name	Dependencies added
products-db	Eureka Client	SpringBoot Module	9000	products-db	Web, Discovery Client,JPA,Mysql

1. products-db

application.yml

spring:

 application:

   name: products-db

eureka:

 client:

   registerWithEureka: true

   fetchRegistry: true

   serviceUrl:

     defaultZone: http://127.0.0.1:9002/eureka/

 instance:

   hostname: localhost

Application.properties

#server

server.port=9000

spring.datasource.url= jdbc:mysql://localhost:3306/test1

spring.datasource.username=sachin

spring.datasource.password=Sachin@123

#spring.jpa.hibernate.ddl-auto=create-drop

# Number of ms to wait before throwing an exception if no connection is available.

spring.datasource.tomcat.max-wait=10000

# Maximum number of active connections that can be allocated from this pool at the same time.

spring.datasource.tomcat.max-active=150

# Validate the connection before borrowing it from the pool.

spring.datasource.tomcat.test-on-borrow=true

# Hibernate ddl auto (create, create-drop, update): with "update" the database

# schema will be automatically updated accordingly to java entities found in

# the project

spring.jpa.hibernate.ddl-auto = update

# Naming strategy

spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy

# Allows Hibernate to generate SQL optimized for a particular DBMS

spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

#logging

logging.level.org.springframework.web=ERROR

com.sachin4java.productsdb=DEBUG

logging.file=/home/sachin/log/url-scanner.log

Endpoints:

Get All products	GET	http://localhost:9000/products
Create Product	POST	http://localhost:9000/products/product
Get products by category	GET	http://localhost:9000/products/categories/{categoryname}

ProductsDbApplication.java

package com.sachin4java.productsdb;

import org.modelmapper.ModelMapper;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

import org.springframework.context.annotation.Bean;

@EnableEurekaClient

@SpringBootApplication

public class ProductsDbApplication {

public static void main(String[] args) {

SpringApplication.run(ProductsDbApplication.class, args);

}

@Bean

public ModelMapper modelMapper() {

   return new ModelMapper();

}

}

ProductEntity.java

package com.sachin4java.productsdb.entity;

import java.io.Serializable;

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.Table;

@Entity

@Table(name="products")

public class ProductEntity implements Serializable{

/**

*

*/

private static final long serialVersionUID = 1L;

@Id

@GeneratedValue(strategy=GenerationType.AUTO)

private Integer id;

@Column(name="category_name")

private String categoryName;

@Column(name="product_name")

private String productName;

public Integer getId() {

return id;

}

public void setId(Integer id) {

this.id = id;

}

public String getCategoryName() {

return categoryName;

}

public void setCategoryName(String categoryName) {

this.categoryName = categoryName;

}

public String getProductName() {

return productName;

}

public void setProductName(String productName) {

this.productName = productName;

}

}

Product.java

package com.sachin4java.productsdb.model;

public class Product {

private String categoryName;

private String productName;

public Product() {

// TODO Auto-generated constructor stub

}

public Product(String categoryName, String productName) {

this.categoryName = categoryName;

this.productName = productName;

}

public String getCategoryName() {

return categoryName;

}

public void setCategoryName(String categoryName) {

this.categoryName = categoryName;

}

public String getProductName() {

return productName;

}

public void setProductName(String productName) {

this.productName = productName;

}

}

2. Products-crawler

Module	Used For	Module Type	Port	Registered Name	Dependencies added
products-crawler	Eureka Client	SpringBoot Module	9001	products-crawler	Web, Discovery Client

application.yml

spring:

 application:

   name: products-crawler

server:

 port: 9001

eureka:

 client:

   registerWithEureka: true

   fetchRegistry: true

   serviceUrl:

     defaultZone: http://127.0.0.1:9002/eureka/

 instance:

   hostname: localhost

Endpoints:

crawlByProductName	GET	http://localhost:9001/crawlers/products/product/{Banana}
crawlByCategoryName	GET	http://localhost:9001/crawlers/products/categories/category/{categoryname}

Get Crawl Data:

private List<ProductCrawl> getCrawlData() {

RestTemplate restTemplate = new RestTemplate();

ResponseEntity<List<ProductCrawl>> crawlData = restTemplate.exchange("https://next.json-generator.com/api/json/get/4k2T-g0z4",

HttpMethod.GET, null, new ParameterizedTypeReference<List<ProductCrawl>>() {

           });

List<ProductCrawl> productCrawls = crawlData.getBody();

return productCrawls;

}

Module products-db -->Repository https://github.com/ranesaci/products-db.git