# gateway-server

**Repository Path**: liveBetter/gateway-server

## Basic Information

- **Project Name**: gateway-server
- **Description**: spring-cloud-gateway开源入门项目
- **Primary Language**: Java
- **License**: MPL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2020-07-06
- **Last Updated**: 2021-12-15

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## gateway

## 1.路由转发
   ```
   [{"args":{"pattern":"/getRoute"},"name":"Path"}]
   ```
+ 路由信息

![转发](./assets/route1.png)

```
  `id` 'route唯一id',
  `location` 'mapping信息',
  `uri` '路由转发地址',
  `orders`'排序规则 最小值为1',
  `predicates`'断言规则',
  `filters` '过滤规则',
  `start_time`'创建时间',
  `status`'是否启用',
  `version` '版本信息',
  `application_name`'应用名称',
  `method_type`'方法类型',
  `description`'路由描述 默认为mapping信息'

   红色为必输项
```

+ 默认转发规则
```
  uri 是配置转发的服务器地址 , orders 越小越优先 
  predicates 默认使用 路径转发
  还支持请求方法类型, 请求头, cookie, host地址 等等
  fitlers 过滤规则  影响转发的因素 

```

   

## 2.路由限速 (防止恶意请求)
 ```
 [{"args":{"key-resolver":"{@apiAndIpKeyResolver}","redis-rate-limiter.burstCapacity":"20","redis-rate-limiter.replenishRate":"5"},"name":"RequestRateLimiter"}]
 ```

+ 批量请求转发路由

![转发](./assets/rate1.png)

+ 未限速效果

![转发](./assets/rate2.png)

+ 限速效果

![转发](./assets/rate3.png)

+ 限速日志 抛出429错误代码

![转发](./assets/rate4.png)

## 3.定时同步
+ 数据库配置定时属性,支持刷新,暂停,删除,重启 

![转发](./assets/sync1.png)

## 4.支持熔断
```
举例
#设置默认熔断4s
hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=4000
#路由增加熔断过滤 ,默认跳转fallback
[
    {"args":{"description":"限速过滤规则","key-resolver":"#{@apiAndIpKeyResolver}","redis-rate-limiter.burstCapacity":"20","redis-rate-limiter.replenishRate":"5"},"name":"RequestRateLimiter"},
    {"args":{"name":"default","description":"熔断过滤规则","fallbackUri":"forward:/fallback"},"name":"Hystrix"}
]
超时提示
	@RequestMapping("/fallback")
	public  ReturnVO fallback() {
		return ReturnVO.fail("服务暂时不可用, 请稍候尝试 !");
	}

```
+ 测试代码

```
 	@PostMapping("hystrix/test")
	public  String  hystrixTest(@RequestBody JSONObject params) {
		log.info("请求参数==>{}",params);
		try {
			log.info("-----------sleep  5s-------------");
			Thread.sleep(5000);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		log.info("请求完成");
		return "hystrix success!";
	}
```

+ 不经过网关

![转发](./assets/hystrix1.png)

+ 网关触发熔断

![转发](./assets/hystrix2.png)

## 5. 日志记录

```
   记录网关转发的以下信息:
  `client_address` '客户端地址',
  `request_address` '请求地址',
  `gateway_address` '网关转发地址',
  `url` 'api路径',
  `method` '请求方法',
  `request_param` '请求参数',
  `request_header` '请求头',
  `response_body` '请求体',
  `start_time` '请求开始时间',
  `end_time` '请求结束时间',
  `spend_time` '时间差ms'

  当转发服务器 异常时, 无response_body end_time spend_time

```
![转发](./assets/record1.png)