Rainbond/grctl/cmd/envoy.go
2020-02-05 22:21:41 +08:00

110 lines
3.2 KiB
Go

// RAINBOND, Application Management Platform
// Copyright (C) 2014-2019 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 (
"context"
"fmt"
"strings"
v2 "github.com/envoyproxy/go-control-plane/envoy/api/v2"
"github.com/envoyproxy/go-control-plane/envoy/api/v2/core"
endpoint "github.com/envoyproxy/go-control-plane/envoy/api/v2/endpoint"
envoyv2 "github.com/goodrain/rainbond/node/core/envoy/v2"
"github.com/gosuri/uitable"
"github.com/urfave/cli"
"google.golang.org/grpc"
)
//NewCmdEnvoy envoy cmd
func NewCmdEnvoy() cli.Command {
c := cli.Command{
Name: "envoy",
Usage: "envoy management related commands",
Flags: []cli.Flag{
cli.StringFlag{
Name: "address",
Usage: "node envoy api address",
Value: "127.0.0.1:6101",
},
cli.StringFlag{
Name: "node",
Usage: "envoy node name",
},
},
Subcommands: []cli.Command{
cli.Command{
Name: "endpoints",
Usage: "list envoy node endpoints",
Action: func(c *cli.Context) error {
return listEnvoyEndpoint(c)
},
},
},
}
return c
}
func listEnvoyEndpoint(c *cli.Context) error {
if c.GlobalString("node") == "" {
showError("node name can not be empty,please define by --node")
}
cli, err := grpc.Dial(c.GlobalString("address"), grpc.WithInsecure())
if err != nil {
showError(err.Error())
}
endpointDiscover := v2.NewEndpointDiscoveryServiceClient(cli)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
res, err := endpointDiscover.FetchEndpoints(ctx, &v2.DiscoveryRequest{
Node: &core.Node{
Cluster: c.GlobalString("node"),
Id: c.GlobalString("node"),
},
})
if err != nil {
showError(err.Error())
}
if len(res.Resources) == 0 {
showError("not find endpoints")
}
endpoints := envoyv2.ParseLocalityLbEndpointsResource(res.Resources)
table := uitable.New()
table.Wrap = true // wrap columns
for _, end := range endpoints {
table.AddRow(end.ClusterName, strings.Join(func() []string {
var re []string
for _, e := range end.Endpoints {
for _, a := range e.LbEndpoints {
if lbe, ok := a.HostIdentifier.(*endpoint.LbEndpoint_Endpoint); ok && lbe != nil {
if address, ok := lbe.Endpoint.Address.Address.(*core.Address_SocketAddress); ok && address != nil {
if port, ok := address.SocketAddress.PortSpecifier.(*core.SocketAddress_PortValue); ok && port != nil {
re = append(re, fmt.Sprintf("%s:%d", address.SocketAddress.Address, port.PortValue))
}
}
}
}
}
return re
}(), ";"))
}
fmt.Println(table)
return nil
}