api-gateway
api 网关在微服务架构中非常重要，api 网关封装了所有单个服务的接口，客户端只需要和网关交互即可。api 网关会把请求分发到具体的微服务中。另外，网关还肩负了 token 校验的功能，为所有的请求增加了安全性。
本项目模拟了 3 个微服务和 1 个网关，所有请求打到网关后会转发到具体的服务中。
startup
startup target service
$ node test-target-service.js
test
$ npm test
startup api-gateway
$ node bin/www
test token
{
user_id: '123',
user_name: 'xugaoyang',
exp: 1580515200000 // 2020/1/1
}
secret_key: 'secret_key'
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoiMTIzIiwidXNlcl9uYW1lIjoieHVnYW95YW5nIiwiZXhwIjoxNTgwNTE1MjAwMDAwfQ.Zm0l0pNdSqszmPVcuY0dxWLA1tGhuAODgS0KOWvrVdQ
{
user_id: '123',
user_name: 'xugaoyang',
exp: 1485907200000 // 2017/1/1
}
secret_key: 'secret_key'
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoiMTIzIiwidXNlcl9uYW1lIjoieHVnYW95YW5nIiwiZXhwIjoxNDg1OTA3MjAwMDAwfQ.PW5J1lCt0_2pmTHEKngk_MgvttuTmVc0f8VRUUST2i0
test request
/user/123/info
request
GET /user/123/info
Host: localhost:3000
response
request successfully proxied to user : /123/info
{
"accept-language": "zh-CN,zh;q=0.9,en;q=0.8,ja;q=0.7",
"accept-encoding": "gzip, deflate, br",
"accept": "*/*",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
"cache-control": "no-cache",
"connection": "close",
"host": "localhost:3000"
}
/post/123/info
request
POST /post/123/info HTTP/1.1
Host: localhost:3000
x-access-token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoiMTIzIiwidXNlcl9uYW1lIjoieHVnYW95YW5nIiwiZXhwIjoxNTgwNTE1MjAwMDAwfQ.Zm0l0pNdSqszmPVcuY0dxWLA1tGhuAODgS0KOWvrVdQ
response
request successfully proxied to post : /123/info
{
"accept-language": "zh-CN,zh;q=0.9,en;q=0.8,ja;q=0.7",
"accept-encoding": "gzip, deflate, br",
"accept": "*/*",
"content-type": "text/plain;charset=UTF-8",
"x-access-token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoiMTIzIiwidXNlcl9uYW1lIjoieHVnYW95YW5nIiwiZXhwIjoxNTgwNTE1MjAwMDAwfQ.Zm0l0pNdSqszmPVcuY0dxWLA1tGhuAODgS0KOWvrVdQ",
"origin": "chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop",
"cache-control": "no-cache",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
"content-length": "17",
"connection": "close",
"host": "localhost:3000"
}
/message/123/info
request
PUT /message/123/info
Host: localhost:3000
response
request successfully proxied to message : /123/info
{
"accept-language": "zh-CN,zh;q=0.9,en;q=0.8,ja;q=0.7",
"accept-encoding": "gzip, deflate, br",
"accept": "*/*",
"content-type": "text/plain;charset=UTF-8",
"origin": "chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop",
"cache-control": "no-cache",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
"content-length": "17",
"connection": "close",
"host": "localhost:3000"
}