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updater.go
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/
updater.go
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package maxinflight
import (
"code.cloudfoundry.org/lager"
"github.com/concourse/atc/db"
)
//go:generate counterfeiter . Updater
type Updater interface {
UpdateMaxInFlightReached(logger lager.Logger, job db.Job, buildID int) (bool, error)
}
func NewUpdater(pipeline db.Pipeline) Updater {
return &updater{pipeline: pipeline}
}
type updater struct {
pipeline db.Pipeline
}
func (u *updater) UpdateMaxInFlightReached(logger lager.Logger, job db.Job, buildID int) (bool, error) {
logger = logger.Session("is-max-in-flight-reached", lager.Data{"job-name": job.Name()})
reached, err := u.isMaxInFlightReached(logger, job, buildID)
if err != nil {
return false, err
}
err = job.SetMaxInFlightReached(reached)
if err != nil {
logger.Error("failed-to-set-max-in-flight-reached", err)
return false, err
}
return reached, nil
}
func (u *updater) isMaxInFlightReached(logger lager.Logger, job db.Job, buildID int) (bool, error) {
maxInFlight := job.Config().MaxInFlight()
if maxInFlight == 0 {
return false, nil
}
builds, err := job.GetRunningBuildsBySerialGroup(job.Config().GetSerialGroups())
if err != nil {
logger.Error("failed-to-get-running-builds-by-serial-group", err)
return false, err
}
if len(builds) >= maxInFlight {
return true, nil
}
nextMostPendingBuild, found, err := job.GetNextPendingBuildBySerialGroup(job.Config().GetSerialGroups())
if err != nil {
logger.Error("failed-to-get-next-pending-build-by-serial-group", err)
return false, err
}
if !found {
logger.Info("pending-build-disappeared-from-serial-group")
return true, nil
}
return nextMostPendingBuild.ID() != buildID, nil
}