82 lines
1.5 KiB
Go
82 lines
1.5 KiB
Go
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package profileinstance
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import (
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"fmt"
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"time"
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"gfx.cafe/util/go/generic"
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"github.com/rs/xid"
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"github.com/spf13/afero"
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)
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type InstanceStore interface {
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NewInstance(xs []byte) (*Instance, error)
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GetInstance(id xid.ID) (*Instance, error)
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}
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type fileBasedInstanceStore struct {
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expiry time.Duration
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fs afero.Fs
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cache generic.Map[xid.ID, *Instance]
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}
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func NewFileBasedInstanceStore(fs afero.Fs, expiry time.Duration) *fileBasedInstanceStore {
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return &fileBasedInstanceStore{
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fs: fs,
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expiry: expiry,
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}
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}
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func (o *fileBasedInstanceStore) NewInstance(xs []byte) (*Instance, error) {
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// save instance
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id := xid.New()
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i := &Instance{
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id: id,
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dat: xs,
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}
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file, err := o.fs.Create(id.String())
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if err != nil {
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return nil, err
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}
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_, err = file.Write(xs)
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if err != nil {
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file.Close()
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return nil, err
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}
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err = file.Close()
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if err != nil {
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return nil, err
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}
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err = i.startServer()
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if err != nil {
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return nil, err
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}
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o.cache.Store(id, i)
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return i, nil
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}
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func (o *fileBasedInstanceStore) GetInstance(id xid.ID) (*Instance, error) {
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if i, ok := o.cache.Load(id); ok {
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return i, nil
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}
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if o.expiry > 0 {
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if id.Time().After(time.Now().Add(o.expiry)) {
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o.fs.Remove(id.String())
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return nil, fmt.Errorf("profile expired")
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}
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}
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bts, err := afero.ReadFile(o.fs, id.String())
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if err != nil {
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return nil, err
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}
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i := &Instance{id: id, dat: bts}
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err = i.startServer()
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if err != nil {
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return nil, err
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}
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o.cache.Store(id, i)
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return i, nil
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}
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