forked from XanderStrike/goplaxt
/
disk.go
109 lines (95 loc) · 2.4 KB
/
disk.go
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package store
import (
"context"
"fmt"
"strings"
"time"
"github.com/peterbourgon/diskv"
)
// DiskStore is a storage engine that writes to the disk
type DiskStore struct{}
// NewDiskStore will instantiate the disk storage
func NewDiskStore() *DiskStore {
return &DiskStore{}
}
// Ping will check if the connection works right
func (s DiskStore) Ping(ctx context.Context) error {
// TODO not sure what can fail here
return nil
}
// WriteUser will write a user object to disk
func (s DiskStore) WriteUser(user User) {
s.writeField(user.ID, "username", user.Username)
s.writeField(user.ID, "access", user.AccessToken)
s.writeField(user.ID, "refresh", user.RefreshToken)
s.writeField(user.ID, "updated", user.Updated.Format("01-02-2006"))
}
// GetUser will load a user from disk
func (s DiskStore) GetUser(id string) *User {
un, err := s.readField(id, "username")
if err != nil {
return nil
}
ud, err := s.readField(id, "updated")
if err != nil {
return nil
}
ac, err := s.readField(id, "access")
if err != nil {
return nil
}
re, err := s.readField(id, "refresh")
if err != nil {
return nil
}
updated, _ := time.Parse("01-02-2006", ud)
user := User{
ID: id,
Username: strings.ToLower(un),
AccessToken: ac,
RefreshToken: re,
Updated: updated,
}
return &user
}
func (s DiskStore) DeleteUser(id string) bool {
s.eraseField(id, "username")
s.eraseField(id, "updated")
s.eraseField(id, "access")
s.eraseField(id, "refresh")
return true
}
func (s DiskStore) writeField(id, field, value string) {
err := s.write(fmt.Sprintf("%s.%s", id, field), value)
if err != nil {
panic(err)
}
}
func (s DiskStore) readField(id, field string) (string, error) {
return s.read(fmt.Sprintf("%s.%s", id, field))
}
func (s DiskStore) eraseField(id, field string) (error) {
d := diskv.New(diskv.Options{
BasePath: "keystore",
Transform: flatTransform,
CacheSizeMax: 1024 * 1024,
})
return d.Erase(fmt.Sprintf("%s.%s", id, field))
}
func (s DiskStore) write(key, value string) error {
d := diskv.New(diskv.Options{
BasePath: "keystore",
Transform: flatTransform,
CacheSizeMax: 1024 * 1024,
})
return d.Write(key, []byte(value))
}
func (s DiskStore) read(key string) (string, error) {
d := diskv.New(diskv.Options{
BasePath: "keystore",
Transform: flatTransform,
CacheSizeMax: 1024 * 1024,
})
value, err := d.Read(key)
return string(value), err
}