func (agent *Agent) Clean() {
// we will wait for all TASK FINISHED
// but after quit_time, we will KILL subprocess by SIGUSR1
start_quit := time.Now().Unix()
for l := len(agent.Process); l > 0; {
log.Warning("process still running, we should quit after all TASK FINISHED, please wait")
log.Warning("running task is:")
for task, _ := range agent.Process {
log.Warningf("%s ", task)
}
time.Sleep(5 * time.Second)
l = len(agent.Process)
if now := time.Now().Unix(); now-start_quit > agent.Conf.QuitTime {
log.Warning("quit_time timeout, we will kill subprocess by SIGUSR1")
for task_id, p := range agent.Process {
if err := p.Signal(syscall.SIGUSR1); err != nil {
log.Warningf("SIGUSR1 task:%s failed...", task_id)
}
log.Warningf("SIGUSR1 task:%s OK...wait subprocess quit", task_id)
}
goto quit
}
}
quit:
time.Sleep(2 * time.Second)
close(agent.StatusLoopQuitChan)
log.Warning("all process DONE, we quit success.")
}
// LoadCronMetaData will only be called in GenJobs Function
// when store unavilable , and must be called once, so we needn't get Lock
func (agent *Agent) LoadCronMetaData() {
cronSlice := make([]string, 0)
meta_file := fmt.Sprintf("%s/dcms_agent.metadata", agent.Conf.WorkDir)
f, err := os.Open(meta_file)
if err != nil {
log.Warningf("reading metadata file: %s failed %s", meta_file, err)
return
}
if data, err := ioutil.ReadAll(f); err != nil {
log.Warningf("ioutil metadata file read all failed %s", err)
} else {
if err = json.Unmarshal(data, &cronSlice); err != nil {
log.Warningf("json unmarshal meta data failed: %s", string(data))
return
}
for _, v := range cronSlice {
log.Debug("receive cron from metadata file:", v)
var cj *CronJob
if err = json.Unmarshal([]byte(v), &cj); err != nil {
log.Warningf("json unmarshal failed for:", v)
continue
}
cj.Dcms = agent
agent.Jobs[cj.Id] = cj
}
for id, job := range agent.Jobs {
log.Debug("now Agent has jobs:", id, job)
}
}
}
func (c *ClusterClient) reloadSlots() {
defer atomic.StoreUint32(&c.reloading, 0)
var (
client *Client
err error
)
for i := 0; i < 3; i++ {
client, err = c.randomClient()
if err != nil {
log.Warningf("redis: randomClient failed for %d times: %s", i+1, err)
if i == 2 {
return
}
continue
}
break
}
slots, err := client.ClusterSlots().Result()
if err != nil {
log.Warningf("redis: ClusterSlots failed: %s", err)
return
}
c.setSlots(slots)
}
//DeleteTaskById will kill subprocess of task
func (s *Server) DeleteTaskById(p martini.Params) (int, string) {
log.Debug("Server dcms http_api DeleteJobById")
taskid, ok := p["taskid"]
if !ok {
return responseError(500, "GetTaskById without taskid")
}
//we will KILL subprocess async, in one goroutine
go func(taskid string) {
defer func() {
if err := recover(); err != nil {
log.Warningf("Delete Task By Id:%s panic: %s", taskid, err)
}
}()
s.DCMS.Lock.Lock()
defer s.DCMS.Lock.Unlock()
for _, task := range s.DCMS.Running {
if task.TaskId != taskid {
continue
}
s.DCMS.KillTask(task)
return
}
log.Warningf("Delete Task By Id:%s not exists or may be done", taskid)
}(taskid)
return responseSuccess(fmt.Sprintf("Task:%s will be killed async, or may be done normal", taskid))
}
func (pc *ProxyConfig) apply() {
log.SetLevelByString(pc.logLevel)
if pc.logFile != "" {
err := log.SetOutputByName(pc.logFile)
if err != nil {
log.Fatalf("ProxyConfig SetOutputByName %s failed %s ", pc.logFile, err.Error())
}
log.SetRotateByDay()
}
if pc.name == "" {
log.Fatal("ProxyConfig name must not empty")
}
if pc.port == 0 {
log.Fatal("ProxyConfig port must not 0")
}
if pc.cpu > runtime.NumCPU() {
log.Warningf("ProxyConfig cpu %d exceed %d, adjust to %d ", pc.cpu, runtime.NumCPU(), runtime.NumCPU())
pc.cpu = runtime.NumCPU()
}
if pc.maxConn > 10000 {
log.Warningf("ProxyConfig maxconn %d exceed 10000, adjust to 10000", pc.maxConn)
pc.maxConn = 10000
}
runtime.GOMAXPROCS(pc.cpu)
if pc.poolSize <= 0 || pc.poolSize > 30 {
log.Warning("ProxyConfig poolSize %d , adjust to 10 ", pc.poolSize)
pc.poolSize = 10
}
if pc.cpuFile != "" {
f, err := os.Create(pc.cpuFile)
if err != nil {
log.Fatal(err)
}
log.Warning("Archer start CPUProfile ", pc.cpuFile)
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
if pc.memFile != "" {
f, err := os.Create(pc.memFile)
if err == nil {
log.Warning("Archer start HeapProfile ", pc.memFile)
pprof.WriteHeapProfile(f)
}
}
go func() {
log.Warning(http.ListenAndServe(":6061", nil))
}()
}
// not thread-safeļ¼ caller must kill after get Lock
func (agent *Agent) KillTask(t *Task) {
p, ok := agent.Process[t.TaskId]
if !ok {
log.Warningf("In KillTask %s, can't find process in agent.Process", t.TaskId)
} else {
pid := p.Pid
log.Warning("KillTask pid is: we try to kill", pid)
if err := p.Kill(); err != nil {
// double check
log.Warningf("kill err %s, we try again ", err)
util.KillTaskForceByPid(pid)
}
}
}
// we will Save Cron MetaData periodically, currently for 5min
func (agent *Agent) SaveCronMetaData() {
meta_file := fmt.Sprintf("%s/dcms_agent.metadata", agent.Conf.WorkDir)
cronSlice := make([]string, 0)
agent.Lock.Lock()
defer agent.Lock.Unlock()
for k, v := range agent.Jobs {
if data, err := json.Marshal(v); err == nil {
cronSlice = append(cronSlice, string(data))
} else {
log.Warningf("marshal task: %d failed: %s", k, err)
return
}
}
if data, err := json.Marshal(cronSlice); err != nil {
log.Warning("json marshal cronslice failed, ", err)
} else {
if len(cronSlice) == 0 {
log.Warning("cronSlice json empty, just skip write MetaData")
return
}
log.Debug("len of cronSlice:", len(data), data)
log.Debugf("cronSlice length:%d content:%s", len(cronSlice), cronSlice)
if e := ioutil.WriteFile(meta_file, data, os.ModePerm); e != nil {
log.Warning("ioutil write meta_file failed,", e)
}
}
}
func (s *Server) handleConn(c net.Conn) {
log.Info("new connection", c.RemoteAddr())
s.counter.Add("connections", 1)
client := &session{
Conn: c,
r: bufio.NewReader(c),
CreateAt: time.Now(),
}
var err error
defer func() {
if err != nil { //todo: fix this ugly error check
if GetOriginError(err.(*errors.Err)).Error() != io.EOF.Error() {
log.Warningf("close connection %v, %+v, %v", c.RemoteAddr(), client, errors.ErrorStack(err))
} else {
log.Infof("close connection %v, %+v", c.RemoteAddr(), client)
}
} else {
log.Infof("close connection %v, %+v", c.RemoteAddr(), client)
}
c.Close()
s.counter.Add("connections", -1)
}()
for {
err = s.redisTunnel(client)
if err != nil {
return
}
client.Ops++
}
}
func (s *Server) resetSchemaInfo() error {
for _, c := range s.clients {
if len(c.txConns) > 0 {
return errors.Errorf("transaction exist")
}
}
cfg, err := config.ParseConfigFile(s.configFile)
if err != nil {
log.Error(err)
return err
}
s.cleanup()
s.autoSchamas = make(map[string]*tabletserver.SchemaInfo)
for _, n := range s.shards {
n.Close()
}
s.shards = nil
s.schemas = nil
log.Warningf("%#v", cfg)
log.SetLevelByString(cfg.LogLevel)
s.cfg = cfg
return s.loadSchemaInfo()
}
func (t *Task) genLogFile() {
defer func() {
if e := recover(); e != nil {
log.Warning("genLogFile fatal:", e)
}
}()
d := time.Now().Format("20060102")
filename := fmt.Sprintf("%s/DCMS-%s/%d-%s-%s.log",
t.Job.Dcms.Conf.WorkDir,
d,
t.Job.Id,
t.Job.Name,
t.TaskId)
log.Info("generate logfile :", filename)
logdir := fmt.Sprintf("%s/DCMS-%s", t.Job.Dcms.Conf.WorkDir, d)
if err := os.MkdirAll(logdir, os.ModePerm); err != nil {
log.Warningf("in run exec goroutine, mkdir workdir %s failed!!!! ", t.Job.Dcms.Conf.WorkDir)
}
if f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_TRUNC, os.ModePerm); err != nil {
log.Warning("in genLogFile os.OpenFile create failed: ", f)
t.logfile = nil
t.LogFilename = ""
} else {
t.logfile = f
t.LogFilename = filename
}
}
func (self *ResMan) addReadyTask(id string) (string, error) {
if self.ready.Exist(id) {
return "", fmt.Errorf("%s already exist: %+v", id, self.ready.Get(id))
}
job, err := scheduler.GetJobById(id)
if err != nil {
return "", err
}
persistentTask := &scheduler.Task{TaskId: self.genTaskId(), Status: scheduler.STATUS_READY,
StartTs: time.Now().Unix(), JobName: job.Name}
log.Warningf("%+v", persistentTask)
err = persistentTask.Save()
if err != nil {
log.Error(err)
return "", err
}
job.LastTaskId = persistentTask.TaskId
job.Save()
t := &Task{Tid: persistentTask.TaskId, job: job, state: taskReady}
self.ready.Add(t.Tid, t)
log.Debugf("ready task %+v, total count:%d", t, self.ready.Length())
return persistentTask.TaskId, nil
}
func getInsertPKValues(pkColumnNumbers []int, rowList sqlparser.Values, tableInfo *schema.Table) (pkValues []interface{}, err error) {
pkValues = make([]interface{}, len(pkColumnNumbers))
for index, columnNumber := range pkColumnNumbers {
if columnNumber == -1 {
pkValues[index] = tableInfo.GetPKColumn(index).Default
continue
}
values := make([]interface{}, len(rowList))
for j := 0; j < len(rowList); j++ {
if _, ok := rowList[j].(*sqlparser.Subquery); ok {
return nil, errors.New("row subquery not supported for inserts")
}
row := rowList[j].(sqlparser.ValTuple)
if columnNumber >= len(row) {
return nil, errors.New("column count doesn't match value count")
}
node := row[columnNumber]
if !sqlparser.IsValue(node) {
log.Warningf("insert is too complex %v", node)
return nil, nil
}
var err error
values[j], err = sqlparser.AsInterface(node)
if err != nil {
return nil, err
}
}
if len(values) == 1 {
pkValues[index] = values[0]
} else {
pkValues[index] = values
}
}
return pkValues, nil
}
// filter must split by '|', for example "fatal|error|fail|failed"
func HitFilter(filename string, filter string) bool {
log.Debug("HitFilter run:", filename, filter)
filterExp, err := regexp.Compile(fmt.Sprintf(`(?i:(%s))`, filter))
if err != nil {
log.Warningf("HitFilter regexp.Compile for %s failed:%s", filter, err)
return false
}
if f, err := os.Open(filename); err != nil {
log.Warning("HitFilter open file failed ", filename, err)
return false
} else {
defer f.Close()
freader := bufio.NewReader(f)
for {
var str string
str, err = freader.ReadString('\n')
s := filterExp.FindStringSubmatch(str)
if len(s) > 0 {
log.Debugf("HitFilter hit msg_filter ", s, str)
return true
}
if err == io.EOF {
break
}
}
}
return false
}
//ping codis-server find crashed codis-server
func CheckAliveAndPromote(groups []models.ServerGroup) ([]models.Server, error) {
errCh := make(chan interface{}, 100)
var serverCnt int
for _, group := range groups { //each group
for _, s := range group.Servers { //each server
serverCnt++
rc := acf(s.Addr, 5*time.Second)
news := s
go PingServer(rc, news, errCh)
}
}
//get result
var crashedServer []models.Server
for i := 0; i < serverCnt; i++ {
s := <-errCh
if s == nil { //alive
continue
}
log.Warningf("server maybe crashed %+v", s)
crashedServer = append(crashedServer, *s.(*models.Server))
err := handleCrashedServer(s.(*models.Server))
if err != nil {
return crashedServer, err
}
}
return crashedServer, nil
}
// Interrupt releases a lock that's held.
func (zm *zMutex) Interrupt() {
select {
case zm.interrupted <- struct{}{}:
default:
log.Warningf("zmutex interrupt blocked")
}
}
// we will check output file, if content contain msg_filter, we will change status to Failed
func (agent *Agent) HandleStatusSuccess(s *TaskStatus) {
agent.Lock.Lock()
defer agent.Lock.Unlock()
if !util.HitFilter(s.TaskPtr.LogFilename, s.TaskPtr.Job.MsgFilter) {
s.TaskPtr.Job.LastSuccessAt = s.CreateAt
s.TaskPtr.Job.LastTaskId = s.TaskPtr.TaskId
if agent.Running[s.TaskPtr.JobId].Status == StatusTimeout {
s.TaskPtr.Job.LastStatus = JobTimeout
} else {
s.TaskPtr.Job.LastStatus = JobSuccess
}
delete(agent.Process, s.TaskPtr.TaskId)
delete(agent.Running, s.TaskPtr.JobId)
s.TaskPtr.Job.SuccessCnt += 1
log.Warning("Task success : ", s.TaskPtr.TaskId, s.TaskPtr.Job.Name, s.TaskPtr.ExecDuration)
} else {
s.TaskPtr.Job.LastErrAt = s.CreateAt
s.TaskPtr.Job.LastTaskId = s.TaskPtr.TaskId
s.TaskPtr.Job.LastStatus = JobFail
s.Status = StatusFailed
delete(agent.Process, s.TaskPtr.TaskId)
delete(agent.Running, s.TaskPtr.JobId)
s.TaskPtr.Job.ErrCnt += 1
log.Warningf("Task failed : hit msg_filter error", s.TaskPtr.TaskId, s.TaskPtr.Job.Name, s.TaskPtr.ExecDuration)
s.Err = errors.New(fmt.Sprintf("Task: %s Job: %s failed. hit msg_filter error", s.TaskPtr.TaskId, s.TaskPtr.Job.Name))
}
s.Message = util.GetFileContent(s.TaskPtr.LogFilename, 65535, 1)
if ok := agent.store.UpdateTaskStatus(s); !ok {
log.Warning("Task status Store Or Update failed ", s)
}
agent.PostTaskStatus(s)
}
// heartbeat monitors state of each shard in the ring.
func (ring *Ring) heartbeat() {
ticker := time.NewTicker(100 * time.Millisecond)
defer ticker.Stop()
for _ = range ticker.C {
var rebalance bool
ring.mx.RLock()
if ring.closed {
ring.mx.RUnlock()
break
}
for _, shard := range ring.shards {
err := shard.Client.Ping().Err()
if shard.Vote(err == nil) {
log.Warningf("redis: ring shard state changed: %s", shard)
rebalance = true
}
}
ring.mx.RUnlock()
if rebalance {
ring.rebalance()
}
}
}
func (si *SchemaInfo) override() {
for _, override := range si.overrides {
table, ok := si.tables[override.Name]
if !ok {
log.Warningf("Table not found for override: %v, %v", override, si.tables)
continue
}
if override.PKColumns != nil {
log.Infof("SetPK Table name %s, pk %v", override.Name, override.PKColumns)
if err := table.SetPK(override.PKColumns); err != nil {
log.Errorf("%s: %v", errors.ErrorStack(err), override)
continue
}
}
if si.cachePool.IsClosed() || override.Cache == nil {
log.Infof("%+v", override)
continue
}
switch override.Cache.Type {
case "RW":
table.CacheType = schema.CACHE_RW
table.Cache = NewRowCache(table, si.cachePool)
case "W":
table.CacheType = schema.CACHE_W
if len(override.Cache.Table) == 0 {
log.Warningf("Incomplete cache specs: %v", override)
continue
}
totable, ok := si.tables[override.Cache.Table]
if !ok {
log.Warningf("Table not found: %v", override)
continue
}
if totable.Cache == nil {
log.Warningf("Table has no cache: %v", override)
continue
}
table.Cache = totable.Cache
default:
log.Warningf("Ignoring cache override: %+v", override)
}
}
}
func (c *Cluster) PutConn(cn Conn) {
pool, ok := c.pools[cn.ID()]
if !ok {
log.Warningf("Cluster PutConn %s, belong no pool", cn.ID())
return
}
pool.Put(cn)
}
func formatSec(dur time.Duration) string {
if dur > 0 && dur < time.Second {
log.Warningf(
"redis: specified duration is %s, but minimal supported value is %s",
dur, time.Second,
)
}
return strconv.FormatInt(int64(dur/time.Second), 10)
}
func (top *Topology) doWatch(evtch <-chan topo.Event, evtbus chan interface{}) {
e := <-evtch
if e.State == topo.StateExpired || e.Type == topo.EventNotWatching {
log.Fatalf("session expired: %+v", e)
}
log.Warningf("topo event %+v", e)
switch e.Type {
//case topo.EventNodeCreated:
//case topo.EventNodeDataChanged:
case topo.EventNodeChildrenChanged: //only care children changed
//todo:get changed node and decode event
default:
log.Warningf("%+v", e)
}
evtbus <- e
}
func (self *ResMan) TimeoutCheck(sec int) {
var timeoutTasks []string
self.running.Each(func(key string, t *Task) bool {
if t.state == taskRuning && time.Since(t.LastUpdate).Seconds() > float64(sec) {
log.Warningf("%+v timeout", t)
timeoutTasks = append(timeoutTasks, key)
}
return true
})
for _, taskId := range timeoutTasks {
log.Warningf("remove timeout task %s", taskId)
mid := &mesos.TaskID{}
id := taskId
mid.Value = &id
self.driver.KillTask(mid)
//self.running.Del(taskId)
}
}
func validCmd(cmd uint32) bool {
if cmd >= common.CAN_DO && cmd <= common.SUBMIT_JOB_EPOCH {
return true
}
if cmd != 39 { //filter gearmand
log.Warningf("invalid cmd %d", cmd)
}
return false
}
func (p *Proxy) Start() {
for {
c, err := p.l.Accept()
if err != nil {
log.Warning("got error when Accept network connect ", err)
if nerr, ok := err.(net.Error); ok && nerr.Temporary() {
log.Warningf("NOTICE: temporary Accept() failure - %s", err)
runtime.Gosched()
continue
}
// theres no direct way to detect this error because it is not exposed
if !strings.Contains(err.Error(), "use of closed network connection") {
log.Warningf("ERROR: listener.Accept() - %s", err)
}
break
}
go HandleConn(p, c)
}
}
func (t *Topology) reloadSlots() {
ss, err := t.getSlots()
if err != nil {
log.Warningf("ReloadLoop failed ", err)
return
}
t.rw.Lock()
t.slots = ss
t.rw.Unlock()
}
func (p *connPool) Remove(cn *conn) error {
// Replace existing connection with new one and unblock waiter.
newcn, err := p.new()
if err != nil {
log.Warningf("redis: new failed: %s", err)
return p.conns.Remove(cn)
}
err = p.conns.Replace(cn, newcn)
p.freeConns <- newcn
return err
}
func (p *connPool) Put(cn *conn) error {
if cn.rd.Buffered() != 0 {
b, _ := cn.rd.ReadN(cn.rd.Buffered())
log.Warningf("redis: connection has unread data: %q", b)
return p.Remove(cn)
}
if p.opt.getIdleTimeout() > 0 {
cn.usedAt = time.Now()
}
p.freeConns <- cn
return nil
}
func GetStmtExecPlan(stmt sqlparser.Statement, getTable TableGetter, alloc arena.ArenaAllocator) (plan *ExecPlan, err error) {
plan, err = analyzeSQL(stmt, getTable, alloc)
if err != nil {
return nil, err
}
if plan.PlanId == PLAN_PASS_DML {
log.Warningf("PASS_DML: %s", sqlparser.String(stmt, alloc))
}
return plan, nil
}
func (s *Server) handleMigrateState(slotIndex int, key []byte) error {
shd := s.slots[slotIndex]
if shd.slotInfo.State.Status != models.SLOT_STATUS_MIGRATE {
return nil
}
if shd.migrateFrom == nil {
log.Fatalf("migrateFrom not exist %+v", shd)
}
if shd.dst.Master() == shd.migrateFrom.Master() {
log.Fatalf("the same migrate src and dst, %+v", shd)
}
redisConn, err := s.pools.GetConn(shd.migrateFrom.Master())
if err != nil {
return errors.Trace(err)
}
defer s.pools.ReleaseConn(redisConn)
redisReader := redisConn.(*redispool.PooledConn).BufioReader()
err = WriteMigrateKeyCmd(redisConn.(*redispool.PooledConn), shd.dst.Master(), 30*1000, key)
if err != nil {
redisConn.Close()
log.Warningf("migrate key %s error, from %s to %s",
string(key), shd.migrateFrom.Master(), shd.dst.Master())
return errors.Trace(err)
}
//handle migrate result
resp, err := parser.Parse(redisReader)
if err != nil {
redisConn.Close()
return errors.Trace(err)
}
result, err := resp.Bytes()
log.Debug("migrate", string(key), "from", shd.migrateFrom.Master(), "to", shd.dst.Master(),
string(result))
if resp.Type == parser.ErrorResp {
redisConn.Close()
log.Error(string(key), string(resp.Raw), "migrateFrom", shd.migrateFrom.Master())
return errors.New(string(resp.Raw))
}
s.counter.Add("Migrate", 1)
return nil
}
func ExpireBlackLists() {
ticker := time.NewTicker(30 * time.Second)
for {
select {
case <-ticker.C:
for k, b := range BlackKeyLists {
if b.Deadline.Before(time.Now()) {
log.Warningf("Black key: %s last: %s deadline: %s reached, will be expired...", b.Name, b.Deadline.Sub(b.Startup), b.Deadline.String())
delete(BlackKeyLists, k)
}
}
}
}
}
