This example contains ```gateway-zuul-service```, ```gateway-scg-service``` and ```gateway-callee-service```. ```gateway-zuul-service``` and ```gateway-scg-service``` invoke ```gateway-callee-service```.
## Instruction
### Configuration
The configuration is as the following shows. ${ip} and ${port} are Polaris backend IP address and port number.
```yaml
spring:
application:
name: ${application.name}
cloud:
polaris:
address: ${ip}:${port}
```
### Launching Example
#### Launching Polaris Backend Service
Reference to [Polaris Getting Started](https://github.com/PolarisMesh/polaris#getting-started)
#### Launching Application
- IDEA Launching
Launching ```spring-cloud-tencent-examples/polaris-gateway-example/gateway-zuul-service```'s ```GatewayZuulService```, ```spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service```'s ```GatewayScgService``` and ```spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service```'s ```GatewayCalleeService```
- Maven Package Launching
Execute under ```spring-cloud-tencent-examples/polaris-gateway-example```
```sh
mvn clean package
```
Then find the jars under ```gateway-zuul-service```, ```gateway-scg-service``` and ```gateway-callee-service```, and run it:
```
java -jar ${app.jar}
```
Launch application, change ${app.jar} to jar's package name.
### Verify
#### Zuul Invoke
```shell
curl -L -X GET 'http://localhost:48082/GatewayCalleeService/gateway/example/callee/echo' -H 'SCT-CUSTOM-METADATA: {"b": 2}'
```
Expected return rate
```
{"a":"1","b":2}
```
#### Spring-Cloud-Gateway Invoke
```shell
curl -L -X GET 'http://localhost:48083/GatewayCalleeService/gateway/example/callee/echo' -H 'SCT-CUSTOM-METADATA: {"b": 2}'
