/
task.go
272 lines (220 loc) · 6.47 KB
/
task.go
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package distributor
import (
"bufio"
"database/sql"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"strings"
"sync"
"sync/atomic"
"time"
"dearcode.net/crab/log"
"dearcode.net/crab/orm"
"github.com/juju/errors"
"dearcode.net/doodle/pkg/distributor/config"
"dearcode.net/doodle/pkg/util"
"dearcode.net/doodle/pkg/util/ssh"
"dearcode.net/doodle/pkg/util/uuid"
)
const (
stateCompileBegin = iota + 1
stateComplieSuccess
stateComplieFailed
stateInstallBegin
stateInstallSuccess
stateInstallFailed
sqlWriteLogs = "update distributor_logs set info = concat(info, ?) , state = ? where id=?"
sqlUpdateState = "update distributor set state = ? where id=?"
)
var (
scripts = []string{"build.sh", "Dockerfile.tpl", "install.sh"}
taskIDInc = uint32(0)
)
type task struct {
wg sync.WaitGroup
ID string
path string
db *sql.DB
service service
d distributor
state int
logID int64
}
const (
buildPathFormat = "20060102_150405"
)
func newTask(serviceID int64) (*task, error) {
var p service
db, err := mdb.GetConnection()
if err != nil {
return nil, errors.Trace(err)
}
if err = orm.NewStmt(db, "service").SetLogger(log.GetLogger()).Where("service.id=%v", serviceID).Query(&p); err != nil {
return nil, errors.Trace(err)
}
if err = orm.NewStmt(db, "node").SetLogger(log.GetLogger()).Where("cluster_id=%d", p.Cluster.ID).Query(&p.Cluster.Node); err != nil {
return nil, errors.Trace(err)
}
log.Debugf("service:%#v", p)
path := fmt.Sprintf("%s/%v_%v", config.Distributor.Server.BuildPath, time.Now().Format(buildPathFormat), atomic.AddUint32(&taskIDInc, 1))
if err = os.MkdirAll(path, os.ModePerm); err != nil {
return nil, errors.Annotatef(err, path)
}
for _, f := range scripts {
of := fmt.Sprintf("%s/%v", config.Distributor.Server.Script, f)
nf := fmt.Sprintf("%s/%s", path, f)
if err = os.Link(of, nf); err != nil {
return nil, errors.Annotatef(err, "old:%v, new:%v", of, nf)
}
}
d := distributor{
ServiceID: serviceID,
Server: util.LocalAddr(),
}
if d.ID, err = orm.NewStmt(db, "distributor").Insert(&d); err != nil {
log.Errorf("insert distributor:%v error:%v", d, err)
return nil, errors.Trace(err)
}
return &task{db: db, service: p, d: d, ID: uuid.String(), path: path}, nil
}
func (t *task) updateState(state int) {
t.state = state
if _, err := orm.NewStmt(t.db, "").Exec(sqlUpdateState, state, t.d.ID); err != nil {
log.Errorf("%v sqlUpdateState:%v, %v, %v, error:%v", t, sqlUpdateState, state, t.d.ID, errors.ErrorStack(err))
return
}
}
func (t *task) String() string {
return t.ID
}
func (t *task) logStream(reader io.ReadCloser) {
defer t.wg.Done()
r := bufio.NewReader(reader)
for {
line, _, err := r.ReadLine()
if err != nil {
if err == io.EOF || strings.Contains(err.Error(), "file already closed") {
return
}
log.Debugf("%v ReadLine %v", t, err)
return
}
log.Infof("%v %s", t, line)
if _, err := orm.NewStmt(t.db, "").Exec(sqlWriteLogs, string(line)+"\n", t.state, t.logID); err != nil {
log.Errorf("%v update logs sql:%v, %s, %v, error:%v", t, sqlWriteLogs, line, t.logID, err)
continue
}
}
}
func (t *task) writeSSHLogs(stdOut, stdErr io.Reader) {
t.writeLogs(0, ioutil.NopCloser(stdOut), ioutil.NopCloser(stdErr))
}
func (t *task) writeLogs(pid int, stdOut, stdErr io.ReadCloser) {
dl := distributorLogs{
DistributorID: t.d.ID,
PID: pid,
State: t.state,
}
id, err := orm.NewStmt(t.db, "distributor_logs").Insert(&dl)
if err != nil {
log.Errorf("%v insert distributor_logs error:%v", t, errors.ErrorStack(err))
return
}
t.logID = id
t.wg.Add(2)
go t.logStream(stdOut)
go t.logStream(stdErr)
}
func execSystemCmdWait(cmdStr string, stdPipe func(pid int, out, err io.ReadCloser)) error {
cmd := exec.Command("/bin/bash", "-c", cmdStr)
errPipe, err := cmd.StderrPipe()
if err != nil {
return errors.Trace(err)
}
outPipe, err := cmd.StdoutPipe()
if err != nil {
return errors.Trace(err)
}
if err := cmd.Start(); err != nil {
return errors.Trace(err)
}
stdPipe(cmd.Process.Pid, outPipe, errPipe)
return errors.Trace(cmd.Wait())
}
func (t *task) install() error {
var err error
t.updateState(stateInstallBegin)
defer func() {
if err != nil {
t.updateState(stateInstallFailed)
return
}
t.updateState(stateInstallSuccess)
}()
//切换工作目录.
oldPath, _ := os.Getwd()
if err = os.Chdir(t.path); err != nil {
return errors.Annotatef(err, t.path)
}
defer os.Chdir(oldPath)
tarFile := t.service.Name + ".tar.gz"
cmd := fmt.Sprintf("tar -C bin -czf %s %s", tarFile, t.service.Name)
if err := execSystemCmdWait(cmd, t.writeLogs); err != nil {
return errors.Annotatef(err, cmd)
}
key := t.service.Source[7:]
for _, n := range t.service.Cluster.Node {
app := w.get(key, n.Server)
cmd = fmt.Sprintf("./install.sh %s %d %s", t.service.Name, app.PID, config.Distributor.ETCD.Hosts)
sc, err := ssh.NewClient(n.Server, 22, t.service.Cluster.ServerUser, t.service.Cluster.ServerPassword, t.service.Cluster.ServerKey)
if err != nil {
return errors.Annotatef(err, "user:%v password:%v key:%v", t.service.Cluster.ServerUser, t.service.Cluster.ServerPassword, t.service.Cluster.ServerKey)
}
log.Debugf("%v begin, upload install script", t)
if err = sc.Upload("./install.sh", "install.sh"); err != nil {
return errors.Annotatef(err, "install.sh")
}
log.Debugf("%v end, upload install script", t)
log.Debugf("%v begin, upload file:%v", t, tarFile)
if err = sc.Upload(tarFile, tarFile); err != nil {
return errors.Trace(err)
}
log.Debugf("%v end, upload file:%v", t, tarFile)
log.Debugf("%v begin, ssh exec:%v", t, cmd)
if err = sc.ExecPipe(cmd, t.writeSSHLogs); err != nil {
return errors.Annotatef(err, cmd)
}
log.Debugf("%v end, ssh exec:%v", t, cmd)
log.Debugf("%v deploy %s success", t, n.Server)
}
t.wg.Wait()
log.Debugf("%v deploy all success", t)
return nil
}
// compile 使用脚本编译指定应用.
func (t *task) compile() error {
var err error
t.updateState(stateCompileBegin)
defer func() {
if err != nil {
t.updateState(stateComplieFailed)
return
}
t.updateState(stateComplieSuccess)
}()
oldPath, _ := os.Getwd()
if err = os.Chdir(t.path); err != nil {
return errors.Annotatef(err, t.path)
}
defer os.Chdir(oldPath)
cmd := fmt.Sprintf("./build.sh %s %s %s", t.service.Source, t.service.key(), t.service.Name)
if err = execSystemCmdWait(cmd, t.writeLogs); err != nil {
return errors.Annotatef(err, cmd)
}
t.wg.Wait()
log.Debugf("path:%v", oldPath)
return nil
}