persistence

Documentation

Index

• func GenerateKeyspaceIdentifier() string
• func ValidateKey(ksid string) bool
• type Backend
• type Keyspace
• type Storage
  • func NewStorage(ksAdmin string, grantUser string, session *gocql.Session, ...) (*Storage, error)
  • func (storage *Storage) CreateKeyspace(name, datacenter, contact string, replication int, ttl int) gobol.Error
  • func (storage *Storage) DatacenterExists(dc string) (bool, gobol.Error)
  • func (storage *Storage) DeleteKeyspace(id string) gobol.Error

Functions

func GenerateKeyspaceIdentifier

func GenerateKeyspaceIdentifier() string

GenerateKeyspaceIdentifier generates the unique ID for keyspaces

func ValidateKey

func ValidateKey(ksid string) bool

ValidateKey validates a keyspace id

Types

type Backend

type Backend interface {
	// CreateKeyspace should create a keyspace to store data
	CreateKeyspace(
		name, datacenter, contact string,
		replication int, ttl int,
	) gobol.Error
	// DeleteKeyspace should delete a keyspace from the database
	DeleteKeyspace(id string) gobol.Error
	// ListKeyspaces should return a list of all available keyspaces
	ListKeyspaces() ([]Keyspace, gobol.Error)
	// GetKeyspace should return the management data regarding the keyspace
	GetKeyspace(id string) (Keyspace, bool, gobol.Error)
	// UpdateKeyspace should update metadata and contact information about the
	// keyspace
	UpdateKeyspace(ksid, contact string) gobol.Error

	// ListDatacenters should list all available datacenters
	ListDatacenters() ([]string, gobol.Error)
}

Backend hides the underlying implementation of the persistence

type Keyspace

type Keyspace struct {
	// Name is a human-friendly name for the keyspace
	Name string `json:"name"`
	// Contact should be an email address for an owner of the keyspace
	Contact string `json:"contact"`
	// DC is the datacenter where the keyspace should reside
	DC string `json:"datacenter"`
	// TTL is the time-to-live for the keyspace data
	TTL int `json:"ttl"`
	// --- This will be removed ---
	Replication int `json:"replicationFactor"`
}

Keyspace represents a keyspace within the database

type Storage

type Storage struct {

	// Backend is the thing that actually does the specific work in the storage
	Backend
	// contains filtered or unexported fields
}

Storage is a storage for data

func NewStorage

func NewStorage(
	ksAdmin string,
	grantUser string,
	session *gocql.Session,
	metadata *metadata.Storage,
	timelineManager *tlmanager.Instance,
	devMode bool,
	defaultTTL int,
) (*Storage, error)

NewStorage creates a new storage persistence

func (*Storage) CreateKeyspace

func (storage *Storage) CreateKeyspace(
	name, datacenter, contact string,
	replication int, ttl int,
) gobol.Error

CreateKeyspace is a wrapper around the Backend in order to create metadata with the actual keyspace creation

func (*Storage) DatacenterExists

func (storage *Storage) DatacenterExists(dc string) (bool, gobol.Error)

DatacenterExists checks whether a given datacenter exists

func (*Storage) DeleteKeyspace

func (storage *Storage) DeleteKeyspace(id string) gobol.Error

DeleteKeyspace is a wrapper around keyspace deletion to ensure the metadata is deleted with the keyspace