Rainbond/grctl/cmd/gateway.go
2020-02-06 17:10:51 +08:00

133 lines
3.2 KiB
Go

// RAINBOND, Application Management Platform
// Copyright (C) 2014-2020 Goodrain Co., Ltd.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"encoding/json"
"fmt"
"io"
"net"
"net/http"
"os"
"strings"
"github.com/goodrain/rainbond/gateway/controller/openresty/model"
"github.com/gosuri/uitable"
"github.com/urfave/cli"
)
//NewCmdGateway gateway cmd
func NewCmdGateway() cli.Command {
c := cli.Command{
Name: "gateway",
Usage: "Gateway management related commands",
Subcommands: []cli.Command{
cli.Command{
Name: "endpoints",
Usage: "list gateway http endpoints",
Subcommands: []cli.Command{
cli.Command{
Name: "http",
Usage: "list gateway http endpoints",
Flags: []cli.Flag{
cli.IntFlag{
Name: "port",
Usage: "gateway http endpoint query port",
Value: 18080,
},
},
Action: func(c *cli.Context) error {
return listHTTPEndpoint(c)
},
},
cli.Command{
Name: "stream",
Usage: "list gateway stream endpoints",
Flags: []cli.Flag{
cli.IntFlag{
Name: "port",
Usage: "gateway stream endpoint query port",
Value: 18081,
},
},
Action: func(c *cli.Context) error {
return listStreamEndpoint(c)
},
},
},
},
},
}
return c
}
func listStreamEndpoint(c *cli.Context) error {
return tcpGetAndPrint(fmt.Sprintf("127.0.0.1:%d", c.Int("port")))
}
func listHTTPEndpoint(c *cli.Context) error {
return httpGetAndPrint(fmt.Sprintf("http://127.0.0.1:%d/config/backends", c.Int("port")))
}
func tcpGetAndPrint(address string) error {
conn, err := net.Dial("tcp", address)
if err != nil {
return err
}
defer conn.Close()
_, err = conn.Write([]byte("GET\r\n"))
if err != nil {
return err
}
print(conn)
return nil
}
func httpGetAndPrint(url string) error {
res, err := http.Get(url)
if err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
if res.Body != nil {
defer res.Body.Close()
print(res.Body)
}
return nil
}
func print(reader io.Reader) {
decoder := json.NewDecoder(reader)
var backends []*model.Backend
if err := decoder.Decode(&backends); err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
table := uitable.New()
table.Wrap = true // wrap columns
for _, b := range backends {
table.AddRow(b.Name, strings.Join(func() []string {
var re []string
for _, e := range b.Endpoints {
re = append(re, fmt.Sprintf("%s:%s %d", e.Address, e.Port, e.Weight))
}
return re
}(), ";"))
}
fmt.Println(table)
}