pgkeyvalue

Documentation

Index

• type KeyValue
• type KeyValueStore
• type PGKeyValueStore
  • func New(ctx *armadacontext.Context, db *pgxpool.Pool, tableName string) (*PGKeyValueStore, error)
  • func (c *PGKeyValueStore) Load(ctx *armadacontext.Context, keys []string) (map[string][]byte, error)
  • func (c *PGKeyValueStore) PeriodicCleanup(ctx *armadacontext.Context, interval time.Duration, lifespan time.Duration) error
  • func (c *PGKeyValueStore) Store(ctx *armadacontext.Context, kvs map[string][]byte) error

Types

type KeyValue

type KeyValue struct {
	Key      string    `db:"key"`
	Value    []byte    `db:"value"`
	Inserted time.Time `db:"inserted"`
}

type KeyValueStore

type KeyValueStore interface {
	Store(ctx *armadacontext.Context, kvs map[string][]byte) error
	Load(ctx *armadacontext.Context, keys []string) (map[string][]byte, error)
}

type PGKeyValueStore

type PGKeyValueStore struct {
	// contains filtered or unexported fields
}

PGKeyValueStore is a time-limited key-value store backed by postgres with a local LRU cache. The store is write-only, i.e., writing to an existing key will return an error (of type *armadaerrors.ErrAlreadyExists). Keys can only be deleted by running the cleanup function. Deleting keys does not cause caches to update, i.e., nodes may have an inconsistent view if keys are deleted.

func New

func New(ctx *armadacontext.Context, db *pgxpool.Pool, tableName string) (*PGKeyValueStore, error)

func (*PGKeyValueStore) Load

func (c *PGKeyValueStore) Load(ctx *armadacontext.Context, keys []string) (map[string][]byte, error)

func (*PGKeyValueStore) PeriodicCleanup

func (c *PGKeyValueStore) PeriodicCleanup(ctx *armadacontext.Context, interval time.Duration, lifespan time.Duration) error

PeriodicCleanup starts a goroutine that automatically runs the cleanup job every interval until the provided context is cancelled.

func (*PGKeyValueStore) Store

func (c *PGKeyValueStore) Store(ctx *armadacontext.Context, kvs map[string][]byte) error