Permify / permify

import (

	"context"

	"sync"

	"github.com/hashicorp/go-memdb"

)

// Memory - Structure for in memory db

type Memory struct {

	sync.RWMutex

	rid uint64

	aid uint64

	DB *memdb.MemDB

}

// New - Creates new database schema in memory

func New(schema *memdb.DBSchema) (*Memory, error) {

	db, err := memdb.NewMemDB(schema)

	return &Memory{

		DB: db,

	}, err

}

func (m *Memory) RelationTupleID() (id uint64) {

	m.Lock()

	defer m.Unlock()

	if m.rid == 0 {

		m.rid++

	}

	id = m.rid

	m.rid++

	return

}

// GetEngineType - Gets engine type, returns as string

func (m *Memory) GetEngineType() string {

	return "memory"

}

// Close - Closing the in memory instance

func (m *Memory) Close() error {

	m.Lock()

	defer m.Unlock()

	m.DB = nil

	return nil

}

// IsReady - Check if database is ready

func (m *Memory) IsReady(_ context.Context) (bool, error) {

	return true, nil

}