90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
|
|
// See LICENSE for copying information.
|
|
|
|
package piecestore
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
|
|
"github.com/zeebo/errs"
|
|
"go.uber.org/zap"
|
|
"google.golang.org/grpc"
|
|
|
|
"storj.io/storj/internal/memory"
|
|
"storj.io/storj/pkg/auth/signing"
|
|
"storj.io/storj/pkg/pb"
|
|
)
|
|
|
|
// Error is the default error class for piecestore client.
|
|
var Error = errs.Class("piecestore")
|
|
|
|
// Config defines piecestore client parameters fro upload and download.
|
|
type Config struct {
|
|
UploadBufferSize int64
|
|
DownloadBufferSize int64
|
|
|
|
InitialStep int64
|
|
MaximumStep int64
|
|
}
|
|
|
|
// DefaultConfig are the default params used for upload and download.
|
|
var DefaultConfig = Config{
|
|
UploadBufferSize: 256 * memory.KiB.Int64(),
|
|
DownloadBufferSize: 256 * memory.KiB.Int64(),
|
|
|
|
InitialStep: 64 * memory.KiB.Int64(),
|
|
MaximumStep: 1 * memory.MiB.Int64(),
|
|
}
|
|
|
|
// Client implements uploading, downloading and deleting content from a piecestore.
|
|
type Client struct {
|
|
log *zap.Logger
|
|
signer signing.Signer
|
|
conn *grpc.ClientConn
|
|
client pb.PiecestoreClient
|
|
config Config
|
|
}
|
|
|
|
// NewClient creates a new piecestore client from a grpc client connection.
|
|
func NewClient(log *zap.Logger, signer signing.Signer, conn *grpc.ClientConn, config Config) *Client {
|
|
return &Client{
|
|
log: log,
|
|
signer: signer,
|
|
conn: conn,
|
|
client: pb.NewPiecestoreClient(conn),
|
|
config: config,
|
|
}
|
|
}
|
|
|
|
// Delete uses delete order limit to delete a piece on piece store.
|
|
func (client *Client) Delete(ctx context.Context, limit *pb.OrderLimit2) error {
|
|
_, err := client.client.Delete(ctx, &pb.PieceDeleteRequest{
|
|
Limit: limit,
|
|
})
|
|
return Error.Wrap(err)
|
|
}
|
|
|
|
// Close closes the underlying connection.
|
|
func (client *Client) Close() error {
|
|
return client.conn.Close()
|
|
}
|
|
|
|
// next allocation step find the next trusted step.
|
|
func (client *Client) nextAllocationStep(previous int64) int64 {
|
|
// TODO: ensure that this is frame idependent
|
|
next := previous * 3 / 2
|
|
if next > client.config.MaximumStep {
|
|
next = client.config.MaximumStep
|
|
}
|
|
return next
|
|
}
|
|
|
|
// ignoreEOF is an utility func for ignoring EOF error, when it's not important.
|
|
func ignoreEOF(err error) error {
|
|
if err == io.EOF {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|