state

Documentation

Index

• Constants
• type DBConnector
• type RecordUpdateStatus
• type State
  • func NewStateDB(ctx context.Context, driver, conn string, logfile string, ...) (State, error)
• type Store

Constants

const ErrNotAssigned = errorString("tasks must be acquired through pop task")

const ErrWrongWorker = errorString("task already acquired by other worker")

Types

type DBConnector

type DBConnector interface {
	Connect() error
	Name() string
	RetryableError(error) bool
	SqlDB() *sql.DB
}

DBConnector provides an interface for working with the underlying DB implementations

type RecordUpdateStatus

type RecordUpdateStatus int

const (
	LATEST_UPDATE     RecordUpdateStatus = 1
	PREVIOUS_UPDATE   RecordUpdateStatus = 2
	UNATTACHED_RECORD RecordUpdateStatus = 10
	ATTACHED_RECORD   RecordUpdateStatus = 11
)

type State

type State interface {
	AssignTask(ctx context.Context, req tasks.PopTask) (tasks.Task, error)
	Get(ctx context.Context, uuid string) (tasks.Task, error)
	GetAll(ctx context.Context) ([]tasks.Task, error)
	GetHead(ctx context.Context) (tasks.RecordUpdate, error)
	Update(ctx context.Context, uuid string, req tasks.UpdateTask) (tasks.Task, error)
	NewStorageTask(ctx context.Context, storageTask tasks.StorageTask) (tasks.Task, error)
	NewRetrievalTask(ctx context.Context, retrievalTask tasks.RetrievalTask) (tasks.Task, error)
	DrainWorker(ctx context.Context, worker string) error
	PublishRecordsFrom(ctx context.Context, worker string) error
	ResetWorkerTasks(ctx context.Context, worker string) error
	Store(ctx context.Context) Store
}

State provides an interface for presistence.

func NewStateDB

func NewStateDB(ctx context.Context, driver, conn string, logfile string, identity crypto.PrivKey, recorder metrics.MetricsRecorder) (State, error)

NewStateDB creates a state instance with a given driver and identity

type Store

type Store interface {
	Head() (cid.Cid, error)
	Get(cid.Cid) (blockformat.Block, error)
	Set(cid.Cid, []byte) error
}