postgreskv

Documentation

Index

• Variables
• type Client
  • func New(dbURL string) (*Client, error)
  • func NewWith(db tagsql.DB, dbURL string) *Client
  • func (client *Client) Close() error
  • func (client *Client) CompareAndSwap(ctx context.Context, key storage.Key, oldValue, newValue storage.Value) (err error)
  • func (client *Client) Delete(ctx context.Context, key storage.Key) (err error)
  • func (client *Client) DeleteMultiple(ctx context.Context, keys []storage.Key) (_ storage.Items, err error)
  • func (client *Client) Get(ctx context.Context, key storage.Key) (_ storage.Value, err error)
  • func (client *Client) GetAll(ctx context.Context, keys storage.Keys) (_ storage.Values, err error)
  • func (client *Client) Iterate(ctx context.Context, opts storage.IterateOptions, ...) (err error)
  • func (client *Client) IterateWithoutLookupLimit(ctx context.Context, opts storage.IterateOptions, ...) (err error)
  • func (client *Client) List(ctx context.Context, first storage.Key, limit int) (_ storage.Keys, err error)
  • func (client *Client) LookupLimit() int
  • func (client *Client) MigrateToLatest(ctx context.Context) error
  • func (client *Client) Put(ctx context.Context, key storage.Key, value storage.Value) (err error)
  • func (client *Client) SetLookupLimit(v int)

Variables

var Error = errs.Class("postgreskv error")

Error is the default postgreskv errs class.

Types

type Client

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

Client is the entrypoint into a postgreskv data store.

func New

func New(dbURL string) (*Client, error)

New instantiates a new postgreskv client given db URL.

func NewWith

func NewWith(db tagsql.DB, dbURL string) *Client

NewWith instantiates a new postgreskv client given db.

func (*Client) Close

func (client *Client) Close() error

Close closes the client.

func (*Client) CompareAndSwap

func (client *Client) CompareAndSwap(ctx context.Context, key storage.Key, oldValue, newValue storage.Value) (err error)

CompareAndSwap atomically compares and swaps oldValue with newValue.

func (*Client) Delete

func (client *Client) Delete(ctx context.Context, key storage.Key) (err error)

Delete deletes the given key and its associated value.

func (*Client) DeleteMultiple

func (client *Client) DeleteMultiple(ctx context.Context, keys []storage.Key) (_ storage.Items, err error)

DeleteMultiple deletes keys ignoring missing keys.

func (*Client) Get

func (client *Client) Get(ctx context.Context, key storage.Key) (_ storage.Value, err error)

Get looks up the provided key and returns its value (or an error).

func (*Client) GetAll

func (client *Client) GetAll(ctx context.Context, keys storage.Keys) (_ storage.Values, err error)

GetAll finds all values for the provided keys (up to LookupLimit). If more keys are provided than the maximum, an error will be returned.

func (*Client) Iterate

func (client *Client) Iterate(ctx context.Context, opts storage.IterateOptions, fn func(context.Context, storage.Iterator) error) (err error)

Iterate calls the callback with an iterator over the keys.

func (*Client) IterateWithoutLookupLimit

func (client *Client) IterateWithoutLookupLimit(ctx context.Context, opts storage.IterateOptions, fn func(context.Context, storage.Iterator) error) (err error)

IterateWithoutLookupLimit calls the callback with an iterator over the keys, but doesn't enforce default limit on opts.

func (*Client) List

func (client *Client) List(ctx context.Context, first storage.Key, limit int) (_ storage.Keys, err error)

List returns either a list of known keys, in order, or an error.

func (*Client) LookupLimit

func (client *Client) LookupLimit() int

LookupLimit returns the maximum limit that is allowed.

func (*Client) MigrateToLatest

func (client *Client) MigrateToLatest(ctx context.Context) error

MigrateToLatest migrates to latest schema version.

func (*Client) Put

func (client *Client) Put(ctx context.Context, key storage.Key, value storage.Value) (err error)

Put sets the value for the provided key.

func (*Client) SetLookupLimit

func (client *Client) SetLookupLimit(v int)

SetLookupLimit sets the lookup limit.