Spring Cloud Gateway与Envoy Sidecar在微服务请求路由中的架构设计

+-----------------+      +--------------+      +-------------+
| Client          | ---> | Envoy Sidecar| ---> | Spring Cloud|
| (HTTP/gRPC/X)   |      | Load Balancer|      | Gateway     |
+-----------------+      +--------------+      +-------------+
|                 |
v                 v
+--------------+   +--------------+
| microservice1|   | microservice2|
+--------------+   +--------------+

static_resources:
listeners:
- name: listener_http
address:
socket_address: { address: 0.0.0.0, port_value: 8080 }
filter_chains:
- filters:
- name: envoy.filters.network.http_connection_manager
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
stat_prefix: ingress_http
route_config:
name: local_route
virtual_hosts:
- name: svc
domains: ["*"]
routes:
- match: { prefix: "/" }
route: { cluster: spring_gateway }
http_filters:
- name: envoy.filters.http.router
clusters:
- name: spring_gateway
connect_timeout: 1s
type: STRICT_DNS
lb_policy: ROUND_ROBIN
load_assignment:
cluster_name: spring_gateway
endpoints:
- lb_endpoints:
- endpoint: { address: { socket_address: { address: spring-gateway.default.svc.cluster.local, port_value: 9090 } } }

server:
port: 9090
spring:
cloud:
gateway:
default-filters:
- StripPrefix=1
routes:
- id: user-service
uri: lb://USER-SERVICE
predicates:
- Path=/user/**
filters:
- RewritePath=/user/(?.*), /${path}
- id: order-service
uri: lb://ORDER-SERVICE
predicates:
- Path=/order/**
filters:
- RewritePath=/order/(?.*), /${path}
discovery:
locator:
enabled: true
lower-case-service-id: true

gateway-service/
├── src/main/java/
│   └── com.example.gateway
│       ├── GatewayApplication.java
│       └── filters/
│           └── AuthFilter.java
├── src/main/resources/
│   └── application.yml
└── Dockerfile