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jobmanager.go
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jobmanager.go
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// Copyright 2022 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package servermaster
import (
"context"
"encoding/json"
"regexp"
"sort"
"time"
"github.com/pingcap/log"
pb "github.com/pingcap/tiflow/engine/enginepb"
"github.com/pingcap/tiflow/engine/executor/cvs"
"github.com/pingcap/tiflow/engine/framework"
"github.com/pingcap/tiflow/engine/framework/metadata"
frameModel "github.com/pingcap/tiflow/engine/framework/model"
engineModel "github.com/pingcap/tiflow/engine/model"
"github.com/pingcap/tiflow/engine/pkg/clock"
dcontext "github.com/pingcap/tiflow/engine/pkg/context"
"github.com/pingcap/tiflow/engine/pkg/ctxmu"
resManager "github.com/pingcap/tiflow/engine/pkg/externalresource/manager"
engineHTTPUtil "github.com/pingcap/tiflow/engine/pkg/httputil"
"github.com/pingcap/tiflow/engine/pkg/notifier"
pkgOrm "github.com/pingcap/tiflow/engine/pkg/orm"
"github.com/pingcap/tiflow/engine/pkg/p2p"
"github.com/pingcap/tiflow/engine/pkg/tenant"
"github.com/pingcap/tiflow/engine/servermaster/jobop"
schedModel "github.com/pingcap/tiflow/engine/servermaster/scheduler/model"
"github.com/pingcap/tiflow/pkg/errors"
"github.com/pingcap/tiflow/pkg/httputil"
"github.com/pingcap/tiflow/pkg/label"
"github.com/pingcap/tiflow/pkg/notify"
"github.com/pingcap/tiflow/pkg/uuid"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/types/known/emptypb"
)
// JobManager defines manager of job master
type JobManager interface {
framework.Master
JobStats
pb.JobManagerServer
GetJobMasterForwardAddress(ctx context.Context, jobID string) (string, error)
GetJobStatuses(ctx context.Context) (map[frameModel.MasterID]frameModel.MasterState, error)
UpdateJobStatus(ctx context.Context, jobID frameModel.MasterID, errMsg string, code frameModel.MasterState) error
WatchJobStatuses(
ctx context.Context,
) (resManager.JobStatusesSnapshot, *notifier.Receiver[resManager.JobStatusChangeEvent], error)
}
const (
defaultJobMasterCost = 1
jobOperateInterval = time.Second * 15
defaultHTTPTimeout = time.Second * 10
defaultListPageSize = 100
maxListPageSize = 1000
)
var jobIDRegex = regexp.MustCompile(`^\w([-.\w]{0,61}\w)?$`)
// JobManagerImpl is a special job master that manages all the job masters, and notify the offline executor to them.
// worker state transition
// - submit new job, create job master successfully, then adds to the `waitAckJobs`.
// - receive worker online, move job from `waitAckJobs` to `onlineJobs`.
// - receive worker offline, move job from `onlineJobs` to `pendingJobs`.
// - Tick checks `pendingJobs` periodically and reschedules the jobs.
type JobManagerImpl struct {
framework.BaseMaster
*JobFsm
masterMetaClient *metadata.MasterMetadataClient
uuidGen uuid.Generator
clocker clock.Clock
frameMetaClient pkgOrm.Client
tombstoneCleaned bool
jobOperator jobop.JobOperator
jobOperatorNotifier *notify.Notifier
JobBackoffMgr jobop.BackoffManager
// jobStatusChangeMu must be taken when we try to create, delete,
// pause or resume a job.
// NOTE The concurrency management for the JobManager is not complete
// yet. We are prioritizing implementing all features.
// TODO We might add a pending operation queue in the future.
jobStatusChangeMu *ctxmu.CtxMutex
notifier *notifier.Notifier[resManager.JobStatusChangeEvent]
wg *errgroup.Group
// http client for the job detail
jobHTTPClient engineHTTPUtil.JobHTTPClient
}
// CancelJob implements JobManagerServer.CancelJob.
func (jm *JobManagerImpl) CancelJob(ctx context.Context, req *pb.CancelJobRequest) (*pb.Job, error) {
meta, err := jm.frameMetaClient.GetJobByID(ctx, req.Id)
if err != nil {
if pkgOrm.IsNotFoundError(err) {
return nil, errors.ErrJobNotFound.GenWithStackByArgs(req.Id)
}
return nil, err
}
pbJob, err := buildPBJob(meta, false /* includeConfig */)
if err != nil {
return nil, err
}
if isJobTerminated(meta.State) {
return pbJob, nil
}
if err := jm.jobOperator.MarkJobCanceling(ctx, req.Id); err != nil {
return nil, err
}
jm.jobOperatorNotifier.Notify()
pbJob.State = pb.Job_Canceling
return pbJob, nil
}
// SendCancelJobMessage implements operateRouter.SendCancelJobMessage
func (jm *JobManagerImpl) SendCancelJobMessage(ctx context.Context, jobID string) error {
job := jm.JobFsm.QueryOnlineJob(jobID)
if job == nil {
if _, err := jm.frameMetaClient.GetJobByID(ctx, jobID); pkgOrm.IsNotFoundError(err) {
return errors.ErrJobNotFound.GenWithStackByArgs(jobID)
}
return errors.ErrJobNotRunning.GenWithStackByArgs(jobID)
}
topic := frameModel.WorkerStatusChangeRequestTopic(jm.BaseMaster.MasterID(), job.WorkerHandle().ID())
msg := &frameModel.StatusChangeRequest{
SendTime: jm.clocker.Mono(),
FromMasterID: jm.BaseMaster.MasterID(),
Epoch: jm.BaseMaster.MasterMeta().Epoch,
ExpectState: frameModel.WorkerStateStopped,
}
handle := job.WorkerHandle().Unwrap()
if handle == nil {
return errors.ErrJobNotRunning.GenWithStackByArgs(jobID)
}
return handle.SendMessage(ctx, topic, msg, true /*nonblocking*/)
}
// DeleteJob implements JobManagerServer.DeleteJob.
func (jm *JobManagerImpl) DeleteJob(ctx context.Context, req *pb.DeleteJobRequest) (*emptypb.Empty, error) {
masterMeta, err := jm.frameMetaClient.GetJobByID(ctx, req.Id)
if err != nil {
if pkgOrm.IsNotFoundError(err) {
return nil, errors.ErrJobNotFound.GenWithStackByArgs(req.Id)
}
return nil, err
}
// Only terminated jobs can be deleted.
if !isJobTerminated(masterMeta.State) {
return nil, errors.ErrJobNotTerminated.GenWithStackByArgs(req.Id)
}
if err := jm.deleteJobMeta(ctx, req.Id); err != nil {
return nil, err
}
return &emptypb.Empty{}, nil
}
func isJobTerminated(state frameModel.MasterState) bool {
switch state {
case frameModel.MasterStateFinished, frameModel.MasterStateStopped, frameModel.MasterStateFailed:
return true
default:
return false
}
}
func (jm *JobManagerImpl) deleteJobMeta(ctx context.Context, jobID string) error {
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
if ok := jm.jobStatusChangeMu.Lock(ctx); !ok {
return errors.Trace(ctx.Err())
}
defer jm.jobStatusChangeMu.Unlock()
// Note that DeleteJob is a soft delete.
res, err := jm.frameMetaClient.DeleteJob(ctx, jobID)
if err != nil {
return err
}
if res.RowsAffected() == 0 {
log.Warn("Job not found in meta (or already deleted)",
zap.Any("job-id", jobID))
}
jm.notifier.Notify(resManager.JobStatusChangeEvent{
EventType: resManager.JobRemovedEvent,
JobID: jobID,
})
return nil
}
// GetJob implements JobManagerServer.GetJob.
func (jm *JobManagerImpl) GetJob(ctx context.Context, req *pb.GetJobRequest) (*pb.Job, error) {
masterMeta, err := jm.frameMetaClient.GetJobByID(ctx, req.Id)
if err != nil {
if pkgOrm.IsNotFoundError(err) {
return nil, errors.ErrJobNotFound.GenWithStackByArgs(req.Id)
}
return nil, err
}
job, err := buildPBJob(masterMeta, req.IncludeConfig)
if err != nil {
return nil, err
}
jm.tryQueryJobDetail(ctx, masterMeta.Addr, job)
return job, nil
}
// CreateJob implements JobManagerServer.CreateJob.
func (jm *JobManagerImpl) CreateJob(ctx context.Context, req *pb.CreateJobRequest) (*pb.Job, error) {
if err := validateCreateJobRequest(req); err != nil {
return nil, err
}
selectors, err := convertSelectors(req)
if err != nil {
return nil, err
}
// TODO call jm.notifier.Notify when we want to support "add job" event.
log.Info("create job", zap.Any("job", req.Job),
zap.String("tenant_id", req.TenantId), zap.String("project_id", req.ProjectId))
job := req.Job
if job.Id == "" {
job.Id = jm.uuidGen.NewString()
}
meta := &frameModel.MasterMeta{
ProjectID: tenant.NewProjectInfo(
req.TenantId,
req.ProjectId,
).UniqueID(),
ID: job.Id,
Config: job.Config,
State: frameModel.MasterStateUninit,
Ext: frameModel.MasterMetaExt{
Selectors: selectors,
},
}
switch job.Type {
case pb.Job_CVSDemo:
extConfig := &cvs.Config{}
if err := json.Unmarshal(job.Config, extConfig); err != nil {
return nil, status.Errorf(codes.InvalidArgument, "failed to decode config: %v", err)
}
meta.Type = frameModel.CvsJobMaster
case pb.Job_DM:
meta.Type = frameModel.DMJobMaster
case pb.Job_FakeJob:
meta.Type = frameModel.FakeJobMaster
default:
return nil, status.Errorf(codes.InvalidArgument, "job type %v is not supported", job.Type)
}
// create job master metadata before creating it.
if err := jm.frameMetaClient.InsertJob(ctx, meta); err != nil {
if pkgOrm.IsDuplicateEntryError(err) {
return nil, errors.ErrJobAlreadyExists.GenWithStackByArgs(job.Id)
}
return nil, err
}
// TODO: Refine me. split the BaseMaster
defaultMaster, ok := jm.BaseMaster.(interface {
SetProjectInfo(frameModel.MasterID, tenant.ProjectInfo)
})
if ok {
defaultMaster.SetProjectInfo(meta.ID, tenant.NewProjectInfo(req.TenantId, req.ProjectId))
} else {
log.Error("jobmanager don't have the 'SetProjectInfo' interface",
zap.String("masterID", meta.ID),
zap.Any("projectInfo", tenant.NewProjectInfo(req.TenantId, req.ProjectId)))
}
// CreateWorker here is to create job master actually
// TODO: use correct worker cost
workerID, err := jm.frameworkCreateWorker(meta)
if err != nil {
err2 := metadata.DeleteMasterMeta(ctx, jm.frameMetaClient, meta.ID)
if err2 != nil {
// TODO: add more GC mechanism if master meta is failed to delete
log.Error("failed to delete master meta", zap.Error(err2))
}
log.Error("create job master met error", zap.Error(err))
return nil, err
}
if workerID != job.Id {
log.Panic("job id is not equal to worker id of job master", zap.String("job-id", job.Id), zap.String("worker-id", workerID))
}
jm.JobFsm.JobDispatched(meta, false /*addFromFailover*/)
return buildPBJob(meta, false /* includeConfig */)
}
func validateCreateJobRequest(req *pb.CreateJobRequest) error {
if req.Job == nil {
return status.Error(codes.InvalidArgument, "job must not be nil")
}
if req.Job.Id != "" && !jobIDRegex.MatchString(req.Job.Id) {
return status.Errorf(codes.InvalidArgument, "job id must match %s", jobIDRegex.String())
}
if req.Job.Type == pb.Job_TypeUnknown {
return status.Error(codes.InvalidArgument, "job type must be specified")
}
return nil
}
func convertSelectors(req *pb.CreateJobRequest) ([]*label.Selector, error) {
if len(req.GetJob().Selectors) == 0 {
return nil, nil
}
ret := make([]*label.Selector, 0, len(req.GetJob().Selectors))
for _, pbSel := range req.Job.Selectors {
sel, err := schedModel.SelectorFromPB(pbSel)
if err != nil {
return nil, err
}
if err := sel.Validate(); err != nil {
return nil, err
}
ret = append(ret, sel)
}
return ret, nil
}
// ListJobs implements JobManagerServer.ListJobs.
func (jm *JobManagerImpl) ListJobs(ctx context.Context, req *pb.ListJobsRequest) (*pb.ListJobsResponse, error) {
masterMetas, err := jm.frameMetaClient.QueryJobs(ctx)
if err != nil {
return nil, err
}
sort.Slice(masterMetas, func(i, j int) bool {
return masterMetas[i].ID < masterMetas[j].ID
})
firstIdx := sort.Search(len(masterMetas), func(i int) bool {
return masterMetas[i].ID > req.PageToken
})
pageSize := req.PageSize
if pageSize <= 0 {
pageSize = defaultListPageSize
} else if pageSize > maxListPageSize {
pageSize = maxListPageSize
}
resp := &pb.ListJobsResponse{}
for i := firstIdx; i < len(masterMetas); i++ {
if masterMetas[i].Type == frameModel.JobManager {
continue
}
job, err := buildPBJob(masterMetas[i], req.IncludeConfig)
if err != nil {
return nil, err
}
if req.Type != pb.Job_TypeUnknown && job.Type != req.Type {
continue
}
if req.State != pb.Job_StateUnknown && job.State != req.State {
continue
}
jm.tryQueryJobDetail(ctx, masterMetas[i].Addr, job)
resp.Jobs = append(resp.Jobs, job)
// Retrieve one more job to determine whether there is a next page.
if int32(len(resp.Jobs)) >= pageSize+1 {
break
}
}
if len(resp.Jobs) > int(pageSize) {
resp.Jobs = resp.Jobs[:pageSize]
resp.NextPageToken = resp.Jobs[pageSize-1].Id
}
return resp, nil
}
func (jm *JobManagerImpl) tryQueryJobDetail(ctx context.Context, jobMasterAddr string, job *pb.Job) {
// If job is not running, we can't query job detail from jobmaster.
if job.State != pb.Job_Running || jm.JobFsm.QueryOnlineJob(job.Id) == nil {
return
}
detail, httpErr := jm.jobHTTPClient.GetJobDetail(ctx, jobMasterAddr, job.Id)
if httpErr != nil {
job.Error = &pb.Job_Error{
Code: httpErr.Code,
Message: httpErr.Message,
}
} else {
job.Detail = detail
}
}
func buildPBJob(masterMeta *frameModel.MasterMeta, includeConfig bool) (*pb.Job, error) {
var jobType pb.Job_Type
switch tp := framework.MustConvertWorkerType2JobType(masterMeta.Type); tp {
case engineModel.JobTypeCVSDemo:
jobType = pb.Job_CVSDemo
case engineModel.JobTypeDM:
jobType = pb.Job_DM
case engineModel.JobTypeCDC:
jobType = pb.Job_CDC
case engineModel.JobTypeFakeJob:
jobType = pb.Job_FakeJob
default:
return nil, errors.Errorf("job %s has unknown type %v", masterMeta.ID, masterMeta.Type)
}
var jobState pb.Job_State
switch masterMeta.State {
case frameModel.MasterStateUninit:
jobState = pb.Job_Created
case frameModel.MasterStateInit:
jobState = pb.Job_Running
case frameModel.MasterStateFinished:
jobState = pb.Job_Finished
case frameModel.MasterStateStopped:
jobState = pb.Job_Canceled
case frameModel.MasterStateFailed:
jobState = pb.Job_Failed
default:
return nil, errors.Errorf("job %s has unknown state %v", masterMeta.ID, masterMeta.State)
}
var selectors []*pb.Selector
for _, sel := range masterMeta.Ext.Selectors {
pbSel, err := schedModel.SelectorToPB(sel)
if err != nil {
return nil, errors.Annotate(err, "buildPBJob")
}
selectors = append(selectors, pbSel)
}
job := &pb.Job{
Id: masterMeta.ID,
Type: jobType,
State: jobState,
Detail: masterMeta.Detail,
Error: &pb.Job_Error{
Message: masterMeta.ErrorMsg,
},
Selectors: selectors,
}
if includeConfig {
job.Config = masterMeta.Config
}
return job, nil
}
// GetJobMasterForwardAddress implements JobManager.GetJobMasterForwardAddress.
func (jm *JobManagerImpl) GetJobMasterForwardAddress(ctx context.Context, jobID string) (string, error) {
// Always query from database. Master meta in JobFsm may be out of date.
masterMeta, err := jm.frameMetaClient.GetJobByID(ctx, jobID)
if err != nil {
if pkgOrm.IsNotFoundError(err) {
return "", errors.ErrJobNotFound.GenWithStackByArgs(jobID)
}
return "", err
}
if masterMeta.State != frameModel.MasterStateInit || jm.JobFsm.QueryOnlineJob(jobID) == nil {
return "", errors.ErrJobNotRunning.GenWithStackByArgs(jobID)
}
return masterMeta.Addr, nil
}
// GetJobStatuses returns the status code of all jobs that are not deleted.
func (jm *JobManagerImpl) GetJobStatuses(
ctx context.Context,
) (map[frameModel.MasterID]frameModel.MasterState, error) {
// BUG? NO filter in the implement
jobs, err := jm.frameMetaClient.QueryJobs(ctx)
if err != nil {
return nil, err
}
ret := make(map[frameModel.MasterID]frameModel.MasterState, len(jobs))
for _, jobMeta := range jobs {
ret[jobMeta.ID] = jobMeta.State
}
return ret, nil
}
// UpdateJobStatus implements JobManager.UpdateJobStatus
func (jm *JobManagerImpl) UpdateJobStatus(
ctx context.Context, jobID frameModel.MasterID, errMsg string, code frameModel.MasterState,
) error {
// Note since the job is not online, it is safe to get from metastore and then update
meta, err := jm.frameMetaClient.GetJobByID(ctx, jobID)
if err != nil {
return err
}
meta.ErrorMsg = errMsg
meta.State = code
return jm.frameMetaClient.UpsertJob(ctx, meta)
}
// NewJobManagerImpl creates a new JobManagerImpl instance
func NewJobManagerImpl(
dctx *dcontext.Context,
id frameModel.MasterID,
backoffConfig *jobop.BackoffConfig,
) (*JobManagerImpl, error) {
metaCli, err := dctx.Deps().Construct(func(cli pkgOrm.Client) (pkgOrm.Client, error) {
return cli, nil
})
if err != nil {
return nil, err
}
metaClient := metaCli.(pkgOrm.Client)
cli := metadata.NewMasterMetadataClient(id, metaClient)
httpCli, err := httputil.NewClient(nil)
if err != nil {
return nil, err
}
httpCli.SetTimeout(defaultHTTPTimeout)
clocker := clock.New()
impl := &JobManagerImpl{
JobFsm: NewJobFsm(),
uuidGen: uuid.NewGenerator(),
masterMetaClient: cli,
clocker: clocker,
frameMetaClient: metaClient,
jobStatusChangeMu: ctxmu.New(),
notifier: notifier.NewNotifier[resManager.JobStatusChangeEvent](),
jobOperatorNotifier: new(notify.Notifier),
jobHTTPClient: engineHTTPUtil.NewJobHTTPClient(httpCli),
JobBackoffMgr: jobop.NewBackoffManagerImpl(clocker, backoffConfig),
}
impl.BaseMaster = framework.NewBaseMaster(
dctx,
impl,
id,
frameModel.JobManager,
)
impl.jobOperator = jobop.NewJobOperatorImpl(metaClient, impl)
wg, ctx := errgroup.WithContext(dctx)
impl.wg = wg
// Note the meta data of job manager is not used, it is safe to overwrite it
// every time a new server master leader is elected. And we always mark the
// Initialized to true in order to trigger OnMasterRecovered of job manager.
meta := impl.MasterMeta()
meta.State = frameModel.MasterStateInit
err = metadata.StoreMasterMeta(ctx, impl.frameMetaClient, meta)
if err != nil {
return nil, err
}
err = impl.BaseMaster.Init(ctx)
if err != nil {
_ = impl.BaseMaster.Close(ctx)
return nil, err
}
impl.bgJobOperatorLoop(ctx)
return impl, err
}
// InitImpl implements frame.MasterImpl.InitImpl
func (jm *JobManagerImpl) InitImpl(ctx context.Context) error {
return nil
}
// Tick implements frame.MasterImpl.Tick
func (jm *JobManagerImpl) Tick(ctx context.Context) error {
filterQuotaError := func(err error) (exceedQuota bool, retErr error) {
if err == nil {
return false, nil
}
if errors.Is(err, errors.ErrMasterConcurrencyExceeded) {
log.Warn("create worker exceeds quota, retry later", zap.Error(err))
return true, nil
}
return false, err
}
err := jm.JobFsm.IterPendingJobs(
func(job *frameModel.MasterMeta) (string, error) {
isJobCanceling := jm.jobOperator.IsJobCanceling(ctx, job.ID)
if isJobCanceling || jm.JobBackoffMgr.Terminate(job.ID) {
state := frameModel.MasterStateFailed
if isJobCanceling {
state = frameModel.MasterStateStopped
}
if err := jm.terminateJob(ctx, job.ErrorMsg, job.ID, state); err != nil {
return "", err
}
return "", errors.ErrMasterCreateWorkerTerminate.FastGenByArgs()
}
if !jm.JobBackoffMgr.Allow(job.ID) {
return "", errors.ErrMasterCreateWorkerBackoff.FastGenByArgs()
}
return jm.frameworkCreateWorker(job)
})
if _, err = filterQuotaError(err); err != nil {
return err
}
if !jm.tombstoneCleaned && jm.BaseMaster.IsMasterReady() {
for _, worker := range jm.BaseMaster.GetWorkers() {
// clean tombstone workers from worker manager and they will be
// re-created in the following IterWaitAckJobs
tombstoneHandle := worker.GetTombstone()
if tombstoneHandle != nil {
if err := tombstoneHandle.CleanTombstone(ctx); err != nil {
return err
}
continue
}
// mark non-tombstone workers as online
err := jm.JobFsm.JobOnline(worker)
// ignore worker that is not in WaitAck list
if err != nil && !errors.Is(err, errors.ErrWorkerNotFound) {
return err
}
}
err = jm.JobFsm.IterWaitAckJobs(
func(job *frameModel.MasterMeta) (string, error) {
return jm.frameworkCreateWorker(job)
})
exceedQuota, err := filterQuotaError(err)
if err != nil {
return err
}
// if met exceed quota error, the remaining jobs need to be failover in
// another tick
if !exceedQuota {
jm.tombstoneCleaned = true
}
}
return nil
}
// OnMasterRecovered implements frame.MasterImpl.OnMasterRecovered
func (jm *JobManagerImpl) OnMasterRecovered(ctx context.Context) error {
jobs, err := jm.masterMetaClient.LoadAllMasters(ctx)
if err != nil {
return err
}
// TODO: refine me, split the BaseMaster interface
impl, ok := jm.BaseMaster.(interface {
InitProjectInfosAfterRecover([]*frameModel.MasterMeta)
})
if !ok {
log.Panic("unfound interface for BaseMaster", zap.String("interface", "InitProjectInfosAfterRecover"))
return errors.ErrMasterInterfaceNotFound.GenWithStackByArgs()
}
impl.InitProjectInfosAfterRecover(jobs)
for _, job := range jobs {
if job.Type == frameModel.JobManager {
continue
}
// TODO: filter the job in backend
if job.State.IsTerminatedState() {
log.Info("skip job in terminated status", zap.Any("job", job))
continue
}
jm.JobFsm.JobDispatched(job, true /*addFromFailover*/)
log.Info("recover job, move it to WaitAck job queue", zap.Any("job", job))
}
return nil
}
// OnWorkerDispatched implements frame.MasterImpl.OnWorkerDispatched
func (jm *JobManagerImpl) OnWorkerDispatched(worker framework.WorkerHandle, result error) error {
if result != nil {
if errors.Is(result, errors.ErrCreateWorkerTerminate) {
errMsg := result.Error()
if cause := errors.Cause(result); cause != nil {
errMsg = cause.Error()
}
if err := jm.terminateJob(
context.Background(), errMsg, worker.ID(), frameModel.MasterStateFailed,
); err != nil {
return err
}
jm.JobFsm.JobOffline(worker, false /* needFailover */)
return nil
}
log.Warn("dispatch worker met error", zap.Error(result))
jm.JobBackoffMgr.JobFail(worker.ID())
return jm.JobFsm.JobDispatchFailed(worker)
}
return nil
}
// OnWorkerOnline implements frame.MasterImpl.OnWorkerOnline
func (jm *JobManagerImpl) OnWorkerOnline(worker framework.WorkerHandle) error {
log.Info("on worker online", zap.Any("id", worker.ID()))
jm.JobBackoffMgr.JobOnline(worker.ID())
return jm.JobFsm.JobOnline(worker)
}
// OnWorkerOffline implements frame.MasterImpl.OnWorkerOffline
func (jm *JobManagerImpl) OnWorkerOffline(worker framework.WorkerHandle, reason error) error {
needFailover := true
if errors.Is(reason, errors.ErrWorkerFinish) {
log.Info("job master finished", zap.String("id", worker.ID()))
needFailover = false
} else if errors.Is(reason, errors.ErrWorkerCancel) {
log.Info("job master canceled", zap.String("id", worker.ID()))
needFailover = false
jm.jobOperatorNotifier.Notify()
} else if errors.Is(reason, errors.ErrWorkerFailed) {
log.Info("job master failed permanently", zap.String("id", worker.ID()))
needFailover = false
} else {
log.Info("on worker offline", zap.Any("id", worker.ID()), zap.Any("reason", reason))
}
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
if err := worker.GetTombstone().CleanTombstone(ctx); err != nil {
return err
}
if needFailover {
jm.JobBackoffMgr.JobFail(worker.ID())
} else {
jm.JobBackoffMgr.JobTerminate(worker.ID())
}
jm.JobFsm.JobOffline(worker, needFailover)
return nil
}
// OnWorkerMessage implements frame.MasterImpl.OnWorkerMessage
func (jm *JobManagerImpl) OnWorkerMessage(worker framework.WorkerHandle, topic p2p.Topic, message interface{}) error {
log.Info("on worker message", zap.Any("id", worker.ID()), zap.Any("topic", topic), zap.Any("message", message))
return nil
}
// OnWorkerStatusUpdated implements frame.MasterImpl.OnWorkerStatusUpdated
func (jm *JobManagerImpl) OnWorkerStatusUpdated(worker framework.WorkerHandle, newStatus *frameModel.WorkerStatus) error {
log.Info("on worker status updated", zap.String("worker-id", worker.ID()), zap.Any("status", newStatus))
return nil
}
// CloseImpl implements frame.MasterImpl.CloseImpl
func (jm *JobManagerImpl) CloseImpl(ctx context.Context) {
jm.notifier.Close()
jm.jobHTTPClient.Close()
jm.jobOperatorNotifier.Close()
}
// StopImpl implements frame.MasterImpl.StopImpl
func (jm *JobManagerImpl) StopImpl(ctx context.Context) {
jm.CloseImpl(ctx)
}
// WatchJobStatuses returns a snapshot of job statuses followed by a stream
// of job status changes.
func (jm *JobManagerImpl) WatchJobStatuses(
ctx context.Context,
) (resManager.JobStatusesSnapshot, *notifier.Receiver[resManager.JobStatusChangeEvent], error) {
// We add an explicit deadline to make sure that
// any potential problem will not block the JobManager forever.
ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
defer cancel()
// Note that the lock is cancellable by the context.
if ok := jm.jobStatusChangeMu.Lock(ctx); !ok {
return nil, nil, errors.Trace(ctx.Err())
}
defer jm.jobStatusChangeMu.Unlock()
snapshot, err := jm.GetJobStatuses(ctx)
if err != nil {
return nil, nil, err
}
// Waits for pending JobStatusChangeEvents to be flushed,
// so that the new receiver does not receive any stale data.
err = jm.notifier.Flush(ctx)
if err != nil {
return nil, nil, errors.Trace(err)
}
receiver := jm.notifier.NewReceiver()
return snapshot, receiver, nil
}
func (jm *JobManagerImpl) bgJobOperatorLoop(ctx context.Context) {
jm.wg.Go(func() error {
defer func() {
log.Info("job manager job operator loop exited")
}()
receiver, err := jm.jobOperatorNotifier.NewReceiver(jobOperateInterval)
if err != nil {
return err
}
defer receiver.Stop()
for {
select {
case <-ctx.Done():
return errors.Trace(ctx.Err())
case _, ok := <-receiver.C:
if !ok {
return nil
}
}
if err := jm.jobOperator.Tick(ctx); err != nil {
// error returns from Tick is only caused by metastore error, so
// only log it and retry later.
log.Warn("job operator tick with error", zap.Error(err))
}
}
})
}
func (jm *JobManagerImpl) frameworkCreateWorker(job *frameModel.MasterMeta) (string, error) {
return jm.BaseMaster.CreateWorker(job.Type, job,
framework.CreateWorkerWithSelectors(job.Ext.Selectors...))
}
func (jm *JobManagerImpl) terminateJob(
ctx context.Context, errMsg string, jobID string, state frameModel.MasterState,
) error {
log.Info("job master terminated", zap.String("job-id", jobID),
zap.String("error", errMsg), zap.Any("state", state))
ctx, cancel := context.WithTimeout(ctx, time.Second*5)
defer cancel()
return jm.UpdateJobStatus(ctx, jobID, errMsg, state)
}