micro/store/store.go

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// Package store is an interface for distributed data storage.
package store // import "go.unistack.org/micro/v3/store"
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import (
"context"
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"errors"
)
var (
// ErrNotFound is returned when a key doesn't exist
ErrNotFound = errors.New("not found")
// ErrInvalidKey is returned when a key has empty or have invalid format
ErrInvalidKey = errors.New("invalid key")
// DefaultStore is the global default store
DefaultStore Store = NewStore()
// DefaultSeparator is the gloabal default key parts separator
DefaultSeparator = "/"
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)
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// Store is a data storage interface
type Store interface {
Name() string
// Init initialises the store
Init(opts ...Option) error
// Connect is used when store needs to be connected
Connect(ctx context.Context) error
// Options allows you to view the current options.
Options() Options
// Exists check that key exists in store
Exists(ctx context.Context, key string, opts ...ExistsOption) error
// Read reads a single key name to provided value with optional ReadOptions
Read(ctx context.Context, key string, val interface{}, opts ...ReadOption) error
// Write writes a value to key name to the store with optional WriteOption
Write(ctx context.Context, key string, val interface{}, opts ...WriteOption) error
// Delete removes the record with the corresponding key from the store.
Delete(ctx context.Context, key string, opts ...DeleteOption) error
// List returns any keys that match, or an empty list with no error if none matched.
List(ctx context.Context, opts ...ListOption) ([]string, error)
// Disconnect the store
Disconnect(ctx context.Context) error
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// String returns the name of the implementation.
String() string
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}