engine

type Build interface {
	Metadata() string

	Abort() error
	Resume(lager.Logger)
}

type BuildDB interface {
	GetBuild(int) (db.Build, error)
	GetBuildEvents(int, uint) (db.EventSource, error)
	StartBuild(int, string, string) (bool, error)

	AbortBuild(int) error
	AbortNotifier(int) (db.Notifier, error)

	FinishBuild(int, db.Status) error
}

type BuildDelegate interface {
	InputDelegate(lager.Logger, atc.GetPlan, event.OriginLocation, string) exec.GetDelegate
	ExecutionDelegate(lager.Logger, atc.TaskPlan, event.OriginLocation, string) exec.TaskDelegate
	OutputDelegate(lager.Logger, atc.PutPlan, event.OriginLocation, string) exec.PutDelegate

	Finish(lager.Logger, error, exec.Success, bool)
}

type BuildDelegateFactory interface {
	Delegate(buildID int) BuildDelegate
}

type BuildLocker interface {
	AcquireWriteLockImmediately([]db.NamedLock) (db.Lock, error)
}

type Engine interface {
	Name() string

	CreateBuild(db.Build, atc.Plan) (Build, error)
	LookupBuild(db.Build) (Build, error)
}

type EngineDB interface {
	SaveBuildEvent(buildID int, event atc.Event) error

	FinishBuild(buildID int, status db.Status) error

	SaveBuildEngineMetadata(buildID int, metadata string) error

	SaveBuildInput(buildID int, input db.BuildInput) (db.SavedVersionedResource, error)
	SaveBuildOutput(buildID int, vr db.VersionedResource) (db.SavedVersionedResource, error)
}

type Engines []Engine

type UnknownEngineError struct {
	Engine string
}