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proxymgr.go
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proxymgr.go
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package core
import (
"errors"
"fmt"
"github.com/MG-RAST/AWE/lib/conf"
e "github.com/MG-RAST/AWE/lib/errors"
"github.com/MG-RAST/AWE/lib/logger"
"github.com/MG-RAST/AWE/lib/logger/event"
"github.com/MG-RAST/AWE/lib/user"
"os"
"time"
)
type ProxyMgr struct {
CQMgr
}
func (qm *ProxyMgr) Lock() {}
func (qm *ProxyMgr) Unlock() {}
func (qm *ProxyMgr) RLock() {}
func (qm *ProxyMgr) RUnlock() {}
func (qm *ProxyMgr) UpdateQueueLoop() {}
func NewProxyMgr() *ProxyMgr {
return &ProxyMgr{
CQMgr: CQMgr{
clientMap: *NewClientMap(),
workQueue: NewWorkQueue(),
suspendQueue: false,
coReq: make(chan CoReq),
//coAck: make(chan CoAck),
feedback: make(chan Notice),
coSem: make(chan int, 1), //non-blocking buffered channel
},
}
}
func (qm *ProxyMgr) TaskHandle() {
return
}
func (qm *ProxyMgr) ClientHandle() {
for {
select {
case coReq := <-qm.coReq:
logger.Debug(2, fmt.Sprintf("proxymgr: workunit checkout request received, Req=%v\n", coReq))
var ack CoAck
if qm.suspendQueue {
// queue is suspended, return suspend error
ack = CoAck{workunits: nil, err: errors.New(e.QueueSuspend)}
} else {
works, err := qm.popWorks(coReq)
ack = CoAck{workunits: works, err: err}
}
//qm.coAck <- ack
coReq.response <- ack
case notice := <-qm.feedback:
logger.Debug(2, fmt.Sprintf("proxymgr: workunit feedback received, workid=%s, status=%s, clientid=%s\n", notice.Id, notice.Status, notice.WorkerId))
if err := qm.handleNoticeWorkDelivered(notice); err != nil {
logger.Error("handleNoticeWorkDelivered(): " + err.Error())
}
}
}
}
func (qm *ProxyMgr) NoticeHandle() {
//TODO copy code from ClientHandle, and/or reuse server code
return
}
func (qm *ProxyMgr) SuspendQueue() {
return
}
func (qm *ProxyMgr) ResumeQueue() {
return
}
func (qm *ProxyMgr) QueueStatus() string {
return ""
}
func (qm *ProxyMgr) GetQueue(name string) interface{} {
return nil
}
func (qm *ProxyMgr) GetJsonStatus() (status map[string]map[string]int, err error) {
return status, err
}
func (qm *ProxyMgr) GetTextStatus() string {
return ""
}
//---end of mgr methods
// workunit methods
//handle feedback from a client about the execution of a workunit
func (qm *ProxyMgr) handleNoticeWorkDelivered(notice Notice) (err error) {
//relay the notice to the server
perf := new(WorkPerf)
workid := notice.Id
clientid := notice.WorkerId
client, ok, err := qm.GetClient(clientid, true)
if err != nil {
return
}
if ok {
//delete(client.Current_work, workid)
client.LockNamed("ProxyMgr/handleNoticeWorkDelivered A2")
err = client.Assigned_work.Delete(notice.Id, false)
if err != nil {
return
}
qm.AddClient(client, true)
client.Unlock()
}
work, ok, err := qm.workQueue.Get(workid)
if err != nil {
return
}
if ok {
err = work.SetState(notice.Status, "")
if err != nil {
return
}
if err = proxy_relay_workunit(work, perf); err != nil {
return
}
if work.State == WORK_STAT_DONE {
client, ok, xerr := qm.GetClient(clientid, true)
if xerr != nil {
err = xerr
return
}
if ok {
client.Increment_total_completed()
client.Last_failed = 0 //reset last consecutive failures
qm.AddClient(client, true)
}
} else if work.State == WORK_STAT_ERROR {
client, ok, xerr := qm.GetClient(clientid, true)
if xerr != nil {
err = xerr
return
}
if ok {
client.LockNamed("ProxyMgr/handleNoticeWorkDelivered B")
err = client.Append_Skip_work(workid, false)
if err != nil {
return
}
err = client.Increment_total_failed(false)
if err != nil {
return
}
client.Last_failed += 1 //last consecutive failures
if client.Last_failed == conf.MAX_CLIENT_FAILURE {
client.Suspend("MAX_CLIENT_FAILURE reached", false)
}
qm.AddClient(client, false)
client.Unlock()
}
}
//qm.workQueue.Put(work)
}
return
}
func (qm *ProxyMgr) FetchDataToken(workunit *Workunit, clientid string) (token string, err error) {
return
}
func (qm *ProxyMgr) FetchPrivateEnv(workid string, clientid string) (env map[string]string, err error) {
return
}
//end of workunits methods
//client methods
func (qm *ProxyMgr) RegisterNewClient(files FormFiles, cg *ClientGroup) (client *Client, err error) {
if _, ok := files["profile"]; ok {
client, err = NewProfileClient(files["profile"].Path)
os.Remove(files["profile"].Path)
if err != nil {
return
}
} else {
client = NewClient()
}
client.LockNamed("proxymgr/RegisterNewClient")
defer client.Unlock()
// If the name of the clientgroup does not match the name in the client profile, throw an error
if cg != nil && client.Group != cg.Name {
return nil, errors.New("Clientgroup name in token does not match that in the client configuration.")
}
qm.AddClient(client, true)
cw_length, err := client.Current_work.Length(false)
if err != nil {
return
}
if cw_length > 0 { //re-registered client
// move already checked-out workunit from waiting queue (workMap) to checked-out list (coWorkMap)
work_list, _ := client.Current_work.Get_list(false)
for _, workid := range work_list {
has_work, err := qm.workQueue.Has(workid)
if err != nil {
continue
}
if has_work {
qm.workQueue.StatusChange(workid, nil, WORK_STAT_CHECKOUT, "")
}
}
}
//proxy specific
Self.SubClients += 1
notifySubClients(Self.Id, Self.SubClients)
return
}
func (qm *ProxyMgr) ClientChecker() {
for {
time.Sleep(30 * time.Second)
delete_clients := []string{}
clients, err := qm.clientMap.GetClients()
if err != nil {
logger.Error("ProxyMgr/ClientChecker: %s", err.Error())
continue
}
for _, client := range clients {
//for _, client := range qm.GetAllClients() {
client.LockNamed("ProxyMgr/ClientChecker")
if client.Tag == true {
client.Tag = false
total_minutes := int(time.Now().Sub(client.RegTime).Minutes())
hours := total_minutes / 60
minutes := total_minutes % 60
client.Serve_time = fmt.Sprintf("%dh%dm", hours, minutes)
//if cw_length > 0 {
// client.Idle_time = 0
//} else {
// client.Idle_time += 30
//}
} else {
//now client must be gone as tag set to false 30 seconds ago and no heartbeat received thereafter
logger.Event(event.CLIENT_UNREGISTER, "clientid="+client.Id)
//qm.RemoveClient(client.Id)
delete_clients = append(delete_clients, client.Id)
}
client.Unlock()
}
// Now delete clients
if len(delete_clients) > 0 {
//qm.clientMap.LockNamed("ClientChecker")
for _, client_id := range delete_clients {
//client, ok := qm.workQueue.workMap.Get(client_id)
client, ok, err := qm.clientMap.Get(client_id, true)
if err != nil {
continue
}
if ok {
//requeue unfinished workunits associated with the failed client
qm.ReQueueWorkunitByClient(client, true)
//delete the client from client map
qm.RemoveClient(client_id, true)
//proxy specific
Self.SubClients -= 1
notifySubClients(Self.Id, Self.SubClients)
}
}
//qm.clientMap.Unlock()
}
}
}
//end of client methods
func (qm *ProxyMgr) EnqueueTasksByJobId(jobid string) (err error) {
return
}
func (qm *ProxyMgr) JobRegister() (jid string, err error) {
return
}
func (qm *ProxyMgr) GetActiveJobs() map[string]bool {
return nil
}
func (qm *ProxyMgr) IsJobRegistered(id string) bool {
return false
}
func (qm *ProxyMgr) GetSuspendJobs() map[string]bool {
return nil
}
func (qm *ProxyMgr) SuspendJob(jobid string, jerror *JobError) (err error) {
return
}
func (qm *ProxyMgr) ResumeSuspendedJobsByUser(u *user.User) (num int) {
return
}
func (qm *ProxyMgr) DeleteJobByUser(jobid string, u *user.User, full bool) (err error) {
return
}
func (qm *ProxyMgr) DeleteSuspendedJobsByUser(u *user.User, full bool) (num int) {
return
}
func (qm *ProxyMgr) DeleteZombieJobsByUser(u *user.User, full bool) (num int) {
return
}
//resubmit a suspended job if user has rights
func (qm *ProxyMgr) ResumeSuspendedJobByUser(id string, u *user.User) (err error) {
//Load job by id
return
}
//re-submit a job in db but not in the queue (caused by server restarting)
func (qm *ProxyMgr) ResubmitJob(id string) (err error) {
return
}
//recover job not in queue
func (qm *ProxyMgr) RecoverJob(id string) (err error) {
return
}
//recover jobs not completed before awe-server restarts
func (qm *ProxyMgr) RecoverJobs() (err error) {
return
}
//recompute jobs from specified task stage
func (qm *ProxyMgr) RecomputeJob(jobid string, stage string) (err error) {
return
}
func (qm *ProxyMgr) UpdateQueueToken(job *Job) (err error) {
return
}
func (qm *ProxyMgr) FinalizeWorkPerf(string, string) (err error) {
return
}
func (qm *ProxyMgr) SaveStdLog(string, string, string) (err error) {
return
}
func (qm *ProxyMgr) GetReportMsg(string, string) (report string, err error) {
return
}
//---end of job methods