springcloud-gateway

Spring Cloud Gateway

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
package com.example.demo;

import java.util.ArrayList;
import java.util.List;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.gateway.event.RefreshRoutesEvent;
import org.springframework.cloud.gateway.route.RouteDefinition;
import org.springframework.cloud.gateway.route.RouteDefinitionRepository;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
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.RestController;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

// 动态路由
// https://zhuanlan.zhihu.com/p/125018436
@RestController
@SpringBootApplication
public class DemoApplication implements RouteDefinitionRepository, ApplicationEventPublisherAware {

public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}

// event publisher
ApplicationEventPublisher applicationEventPublisher;

@Override
public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
this.applicationEventPublisher = applicationEventPublisher;
}


// router
List<RouteDefinition> memery = new ArrayList<>();

private void refreshRoute() {
applicationEventPublisher.publishEvent(new RefreshRoutesEvent(this));
}

@PutMapping
Mono<Void> putRoute(@RequestBody Mono<RouteDefinition> o) {
return o.flatMap(routeDefinition -> {
memery.add(routeDefinition);
refreshRoute();
return Mono.empty();
});
}

@PostMapping
Mono<Void> postRoute(@RequestBody Mono<RouteDefinition> o) {
return o.flatMap(routeDefinition -> {
for (int i = 0; i < memery.size(); i++) {
if (memery.get(i).getId().equals(routeDefinition.getId())) {
memery.set(i, routeDefinition);
}
}
refreshRoute();
return Mono.empty();
});
}

@DeleteMapping
Mono<Void> deleteRoute(@RequestBody Mono<String> o) {
return o.flatMap(id -> {
memery.removeIf(routeDefinition -> routeDefinition.getId().equals(id));
refreshRoute();
return Mono.empty();
});
}

@GetMapping
Mono<List<RouteDefinition>> getRoute(){
return Mono.just(memery);
}

@Override
public Flux<RouteDefinition> getRouteDefinitions() {
return Flux.fromIterable(memery);
}

@Override
public Mono<Void> save(Mono<RouteDefinition> route) {
return Mono.empty();
}

@Override
public Mono<Void> delete(Mono<String> routeId) {
return Mono.empty();
}
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
GET http://localhost:52834/test

###

PUT http://localhost:52834
Content-Type: application/json

{
"id": "test",
"predicates": [
{
"name": "Path",
"args": {
"pattern": "/test"
}
}
],
"filters": [
{
"name": "RewritePath",
"args": {
"regexp": "/test",
"replacement": "/s"
}
}
],
"uri": "http://www.baidu.com",
"order": 0
}

###

GET http://localhost:52834

###

GET http://localhost:52834/test

springcloud-gateway
http://fightinggg.github.io/fluid/QJJDS0.html
作者
fightinggg
发布于
2020年11月10日
许可协议