sealos/pkg/remote/remote.go

/*
Copyright 2022 cuisongliu@qq.com.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package remote

import (
	"fmt"
	"text/template"

	"github.com/labring/sealos/pkg/utils/ssh"
)

type Interface interface {
	HostsAdd(ip, host, domain string) error
	HostsDelete(ip, domain string) error
	Hostname(ip string) (string, error)
	IPVS(ip, vip string, masters []string) error
	StaticPod(ip, vip, name, image string, masters []string) error
	Token(ip string) (string, error)
	IsDocker(ip string) (string, error)
	CGroup(ip string) (string, error)
	Socket(ip string) (string, error)
	Cert(ip string, altNames []string, hostIP, hostName, serviceCIRD, DNSDomain string) error
}

const (
	addHostsCommandFmt    = "hosts add --ip %s  --domain %s"
	deleteHostsCommandFmt = "hosts delete  --domain %s"
	hostnameCommandFmt    = "hostname"
	tokenCommandFmt       = "token"
	isDockerCommandFmt    = "cri is-docker"
	cGroupCommandFmt      = "cri cgroup-driver --short"
	socketCommandFmt      = "cri socket"
)

type remote struct {
	clusterName  string
	sshInterface ssh.Interface
}

func (s *remote) HostsAdd(ip, host, domain string) error {
	out := fmt.Sprintf(addHostsCommandFmt, host, domain)
	return bashSync(s.clusterName, s.sshInterface, ip, out)
}

func (s *remote) HostsDelete(ip, domain string) error {
	out := fmt.Sprintf(deleteHostsCommandFmt, domain)
	return bashSync(s.clusterName, s.sshInterface, ip, out)
}

func (s *remote) Hostname(ip string) (string, error) {
	return bashToString(s.clusterName, s.sshInterface, ip, hostnameCommandFmt)
}

func (s *remote) IPVS(ip, vip string, masters []string) error {
	var ipvsCommandTemplate = template.Must(template.New("ipvs").Parse(`` +
		`ipvs --vs {{.vip}}  {{range $h := .masters}}--rs  {{$h}} {{end}} --health-path /healthz --health-schem https --run-once`,
	))
	data := map[string]interface{}{
		"vip":     vip,
		"masters": masters,
	}
	out, err := renderTemplate(ipvsCommandTemplate, data)
	if err != nil {
		return err
	}
	return bashSync(s.clusterName, s.sshInterface, ip, out)
}

func (s *remote) StaticPod(ip, vip, name, image string, masters []string) error {
	var staticPodIPVSCommandTemplate = template.Must(template.New("lvscare").Parse(`` +
		`static-pod lvscare --name {{.name}} --vip {{.vip}} --image {{.image}}  {{range $h := .masters}} --masters  {{$h}}{{end}}`,
	))
	data := map[string]interface{}{
		"vip":     vip,
		"image":   image,
		"masters": masters,
		"name":    name,
	}
	out, err := renderTemplate(staticPodIPVSCommandTemplate, data)
	if err != nil {
		return err
	}
	return bashSync(s.clusterName, s.sshInterface, ip, out)
}

func (s *remote) Token(ip string) (string, error) {
	return bashToString(s.clusterName, s.sshInterface, ip, tokenCommandFmt)
}

func (s *remote) IsDocker(ip string) (string, error) {
	return bashToString(s.clusterName, s.sshInterface, ip, isDockerCommandFmt)
}
func (s *remote) CGroup(ip string) (string, error) {
	return bashToString(s.clusterName, s.sshInterface, ip, cGroupCommandFmt)
}
func (s *remote) Socket(ip string) (string, error) {
	return bashToString(s.clusterName, s.sshInterface, ip, socketCommandFmt)
}

func (s *remote) Cert(ip string, altNames []string, nodeIP, nodeName, serviceCIRD, DNSDomain string) error {
	var certCommandTemplate = template.Must(template.New("cert").Parse(`` +
		`cert \
	{{if .nodeIP}} --node-ip {{.nodeIP}}{{end}}{{if .nodeName}} --node-name {{.nodeName}}{{end}} \
	{{if .serviceCIDR}} --service-cidr {{.serviceCIDR}}{{end}}{{if .dnsDomain}} --dns-domain {{.dnsDomain}}{{end}} \
	{{range $h := .altNames}} --alt-names {{$h}} {{end}}`,
	))
	data := map[string]interface{}{
		"nodeIP":      nodeIP,
		"nodeName":    nodeName,
		"serviceCIDR": serviceCIRD,
		"dnsDomain":   DNSDomain,
		"altNames":    altNames,
	}
	out, err := renderTemplate(certCommandTemplate, data)
	if err != nil {
		return err
	}
	return bashSync(s.clusterName, s.sshInterface, ip, out)
}

func New(clusterName string, sshInterface ssh.Interface) Interface {
	return &remote{
		clusterName:  clusterName,
		sshInterface: sshInterface,
	}
}