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job.go
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job.go
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package task
import (
"context"
"fmt"
"github.com/ssbeatty/oms/internal/config"
"github.com/ssbeatty/oms/internal/models"
"github.com/ssbeatty/oms/internal/ssh"
"github.com/ssbeatty/oms/pkg/transport"
"github.com/ssbeatty/oms/pkg/utils"
"io/fs"
"os"
"path"
"path/filepath"
"strconv"
"sync"
"sync/atomic"
"time"
)
type JobStatus string
const (
JobStatusSchedule JobStatus = "schedule"
JobStatusStopped JobStatus = "stopped"
MarkText = "###mark###"
ErrorText = "[error]"
DoneMartText = "###done###"
)
// Job is cron task or long task
type Job struct {
ID int
name string
hosts []*models.Host
cmd string
cmdType string
status atomic.Value
log string // log path
spec string
engine *Manager
cmdId int
}
func (m *Manager) NewJob(id int, name, cmd, spec, cmdType string, cmdId int, host []*models.Host) *Job {
if name == "" {
name = strconv.Itoa(id)
}
log := filepath.Join(path.Join(m.config().App.DataPath, config.DefaultTaskTmpPath), fmt.Sprintf("%d-%s", id, name))
job := &Job{
ID: id,
name: name,
hosts: host,
cmd: cmd,
cmdType: cmdType,
spec: spec,
engine: m,
log: log,
cmdId: cmdId,
}
job.UpdateStatus(JobStatusSchedule)
return job
}
func (j *Job) runPlayer(ctx context.Context, client *transport.Client) ([]byte, error) {
modPlayer, err := models.GetPlayBookById(j.cmdId)
if err != nil {
return nil, err
}
steps, err := j.engine.sshManager.ParseSteps(modPlayer.Steps)
if err != nil {
return nil, err
}
player := ssh.NewPlayer(client, steps, true, nil)
return player.Run(ctx)
}
func (j *Job) runCmd(ctx context.Context, client *transport.Client) ([]byte, error) {
session, err := client.NewPty()
if err != nil {
j.engine.logger.Errorf("create new session failed, host name: %s, err: %v", err)
}
defer session.Close()
return session.SudoContext(ctx, j.cmd, client.Conf.Password)
}
func (j *Job) run(client *transport.Client, host *models.Host, wg *sync.WaitGroup, std *syncBuffer) {
defer wg.Done()
var (
err error
output []byte
)
switch j.cmdType {
case ssh.CMDTypePlayer:
output, err = j.runPlayer(context.Background(), client)
default:
output, err = j.runCmd(context.Background(), client)
}
if err != nil {
j.engine.logger.Errorf("error when run cmd: %v, host name: %s, msg: %s", err, host.Name, output)
_, err = std.WriteWithMsg(output, fmt.Sprintf("%s[host_id:%d]%s\n", MarkText, host.Id, ErrorText))
return
}
_, err = std.WriteWithMsg(output, fmt.Sprintf("%s[host_id:%d]\n", MarkText, host.Id))
if err != nil {
j.engine.logger.Debugf("error write outputs, err: %v", err)
}
}
func (j *Job) exec() {
j.engine.logger.Debugf("job, name: %s, cmd: %s, running.", j.name, j.cmd)
defer j.engine.logger.Debugf("job, name: %s, cmd: %s, done.", j.name, j.cmd)
var wg sync.WaitGroup
wg.Add(len(j.hosts))
instance, err := j.createInstance()
if err != nil {
j.engine.logger.Errorf("error when create instance, err: %v", err)
return
}
fd, err := os.OpenFile(instance.LogPath, os.O_CREATE|os.O_TRUNC|os.O_RDWR, fs.ModePerm)
if err != nil {
j.engine.logger.Errorf("error when open tmp file, err: %v", err)
return
}
std := NewSyncBuffer(fd)
defer std.Close()
_ = instance.UpdateStatus(models.InstanceStatusRunning)
for _, host := range j.hosts {
client, err := j.engine.sshManager.NewClientWithSftp(host)
if err != nil {
j.engine.logger.Errorf("error when new ssh client, host name: %s, err: %v", err, host.Name)
_, _ = fmt.Fprintf(std, "%s[host_id:%d]%s\n[FATIL ERROR]: %s: \n", MarkText, host.Id, ErrorText, err.Error())
continue
}
go j.run(client, host, &wg, std)
}
wg.Wait()
_, _ = fmt.Fprintf(std, "%s\n", DoneMartText)
_ = instance.Done()
}
func (j *Job) Run() {
defer func() {
if j.Status() != JobStatusStopped {
j.UpdateStatus(JobStatusSchedule)
}
}()
j.exec()
}
func (j *Job) createInstance() (*models.TaskInstance, error) {
now := time.Now().Local()
instance, err := models.InsertTaskInstance(j.ID, now)
if err != nil {
return nil, err
}
logPath := instance.GenerateLogPath(j.log)
if exist, _ := utils.PathExists(path.Dir(logPath)); !exist {
_ = os.MkdirAll(path.Dir(logPath), fs.ModePerm)
}
err = models.UpdateTaskInstanceLogTrace(instance, logPath)
if err != nil {
return nil, err
}
return instance, nil
}
func (j *Job) Status() JobStatus {
return j.status.Load().(JobStatus)
}
func (j *Job) UpdateStatus(status JobStatus) {
j.status.Store(status)
_, err := models.UpdateJobStatus(j.ID, string(status))
if err != nil {
j.engine.logger.Errorf("error when update job status, err: %v", err)
}
}
func (j *Job) Close() {
j.engine.taskService.Remove(strconv.Itoa(j.ID))
j.UpdateStatus(JobStatusStopped)
}
func (j *Job) Name() string {
return j.name
}
func (j *Job) Cmd() string {
return j.cmd
}