nginx-mapping-headers

根据http header 转发到不同的后端服务

client--> header key --> openresty--> read header key --> location service-->  upstream endpoint

demo

upstream user {
    server 127.0.0.1:8080;
    server 127.0.0.2:8080;
}

upstream order{
    server 127.0.0.1:8081;
    server 127.0.0.2:8081;
}

map $http_x_svc_key_id $app {
    111111111 user ;
    999999999 order;
}

server {
    listen 80 default_server;

    root /var/www/html;

    index index.html index.htm;

    server_name front.example.org;

    charset utf-8;

    location /api/svc {
        include proxy_params;
        proxy_pass http://app;
        proxy_redirect off;

        # Handle Web Socket connections
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}

curl

curl -X GET \
  http://192.168.0.48:8010/api/svc/v1/platformList \
  -H 'accept: application/json, text/plain, */*' \
  -H 'x-ccb-centerid: 111111111' \