func (s jobService) CanBuildBeScheduled(logger lager.Logger, build db.Build, buildPrep db.BuildPreparation, versions *algorithm.VersionsDB) ([]db.BuildInput, bool, string, error) {
if build.Scheduled {
return s.updateBuildPrepAndReturn(buildPrep, true, "build-scheduled")
}
paused, err := s.DB.IsPaused()
if err != nil {
return []db.BuildInput{}, false, "pause-pipeline-db-failed", err
}
if paused {
buildPrep.PausedPipeline = db.BuildPreparationStatusBlocking
return s.updateBuildPrepAndReturn(buildPrep, false, "pipeline-paused")
}
buildPrep.PausedPipeline = db.BuildPreparationStatusNotBlocking
err = s.DB.UpdateBuildPreparation(buildPrep)
if err != nil {
return []db.BuildInput{}, false, "update-build-prep-db-failed-pipeline-not-paused", err
}
if s.DBJob.Paused {
buildPrep.PausedJob = db.BuildPreparationStatusBlocking
return s.updateBuildPrepAndReturn(buildPrep, false, "job-paused")
}
buildPrep.PausedJob = db.BuildPreparationStatusNotBlocking
err = s.DB.UpdateBuildPreparation(buildPrep)
if err != nil {
return []db.BuildInput{}, false, "update-build-prep-db-failed-job-not-paused", err
}
if build.Status != db.StatusPending {
return []db.BuildInput{}, false, "build-not-pending", nil
}
buildInputs, buildPrep, message, err := s.getBuildInputs(logger, build, buildPrep, versions)
if err != nil || message != "" {
return []db.BuildInput{}, false, message, err
}
buildPrep.MaxRunningBuilds = db.BuildPreparationStatusBlocking
err = s.DB.UpdateBuildPreparation(buildPrep)
if err != nil {
return []db.BuildInput{}, false, "update-build-prep-db-failed-pipeline-not-paused", err
}
maxInFlight := s.JobConfig.MaxInFlight()
if maxInFlight > 0 {
builds, err := s.DB.GetRunningBuildsBySerialGroup(s.DBJob.Name, s.JobConfig.GetSerialGroups())
if err != nil {
return []db.BuildInput{}, false, "db-failed", err
}
if len(builds) >= maxInFlight {
buildPrep.MaxRunningBuilds = db.BuildPreparationStatusBlocking
return s.updateBuildPrepAndReturn(buildPrep, false, "max-in-flight-reached")
}
nextMostPendingBuild, found, err := s.DB.GetNextPendingBuildBySerialGroup(s.DBJob.Name, s.JobConfig.GetSerialGroups())
if err != nil {
return []db.BuildInput{}, false, "db-failed", err
}
if !found {
return []db.BuildInput{}, false, "no-pending-build", nil
}
if nextMostPendingBuild.ID != build.ID {
return []db.BuildInput{}, false, "not-next-most-pending", nil
}
}
buildPrep.MaxRunningBuilds = db.BuildPreparationStatusNotBlocking
err = s.DB.UpdateBuildPreparation(buildPrep)
if err != nil {
return []db.BuildInput{}, false, "update-build-prep-db-failed-not-max-running-builds", err
}
return buildInputs, true, "can-be-scheduled", nil
}
