82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
package peer
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import (
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"strings"
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"time"
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"github.com/lbryio/reflector.go/shared"
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"github.com/lbryio/reflector.go/store"
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"github.com/lbryio/lbry.go/v2/extras/errors"
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"github.com/lbryio/lbry.go/v2/stream"
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)
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// Store is a blob store that gets blobs from a peer.
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// It satisfies the store.BlobStore interface but cannot put or delete blobs.
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type Store struct {
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opts StoreOpts
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}
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// StoreOpts allows to set options for a new Store.
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type StoreOpts struct {
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Address string
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Timeout time.Duration
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}
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// NewStore makes a new peer store.
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func NewStore(opts StoreOpts) *Store {
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return &Store{opts: opts}
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}
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func (p *Store) getClient() (*Client, error) {
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c := &Client{Timeout: p.opts.Timeout}
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err := c.Connect(p.opts.Address)
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return c, errors.Prefix("connection error", err)
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}
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func (p *Store) Name() string { return "peer" }
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// Has asks the peer if they have a hash
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func (p *Store) Has(hash string) (bool, error) {
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c, err := p.getClient()
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if err != nil {
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return false, err
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}
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defer func() { _ = c.Close() }()
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return c.HasBlob(hash)
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}
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// Get downloads the blob from the peer
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func (p *Store) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
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start := time.Now()
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c, err := p.getClient()
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if err != nil {
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return nil, shared.NewBlobTrace(time.Since(start), p.Name()), err
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}
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defer func() { _ = c.Close() }()
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blob, trace, err := c.GetBlob(hash)
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if err != nil && strings.Contains(err.Error(), "blob not found") {
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return nil, trace, store.ErrBlobNotFound
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}
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return blob, trace, err
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}
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// Put is not supported
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func (p *Store) Put(hash string, blob stream.Blob) error {
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return errors.Err(shared.ErrNotImplemented)
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}
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// PutSD is not supported
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func (p *Store) PutSD(hash string, blob stream.Blob) error {
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return errors.Err(shared.ErrNotImplemented)
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}
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// Delete is not supported
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func (p *Store) Delete(hash string) error {
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return errors.Err(shared.ErrNotImplemented)
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}
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// Shutdown is not supported
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func (p *Store) Shutdown() {
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}
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