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package bench
import (
"context"
"github.com/pkg/errors"
"github.com/tonistiigi/fsutil"
fstypes "github.com/tonistiigi/fsutil/types"
"golang.org/x/sync/errgroup"
)
func diffCopy(proto bool, src, dest string) error {
var s1, s2 fsutil.Stream
eg, ctx := errgroup.WithContext(context.Background())
if proto {
s1, s2 = sockPairProto(ctx)
} else {
s1, s2 = sockPair(ctx)
}
eg.Go(func() error {
fs, err := fsutil.NewFS(src)
if err != nil {
panic(err)
}
return fsutil.Send(ctx, s1, fs, nil)
})
eg.Go(func() error {
return fsutil.Receive(ctx, s2, dest, fsutil.ReceiveOpt{})
})
return eg.Wait()
}
func diffCopyProto(src, dest string) error {
return diffCopy(true, src, dest)
}
func diffCopyReg(src, dest string) error {
return diffCopy(false, src, dest)
}
func sockPair(ctx context.Context) (fsutil.Stream, fsutil.Stream) {
c1 := make(chan *fstypes.Packet, 64)
c2 := make(chan *fstypes.Packet, 64)
return &fakeConn{ctx, c1, c2}, &fakeConn{ctx, c2, c1}
}
func sockPairProto(ctx context.Context) (fsutil.Stream, fsutil.Stream) {
c1 := make(chan []byte, 64)
c2 := make(chan []byte, 64)
return &fakeConnProto{ctx, c1, c2}, &fakeConnProto{ctx, c2, c1}
}
type fakeConn struct {
ctx context.Context
recvChan chan *fstypes.Packet
sendChan chan *fstypes.Packet
}
func (fc *fakeConn) Context() context.Context {
return fc.ctx
}
func (fc *fakeConn) RecvMsg(m interface{}) error {
p, ok := m.(*fstypes.Packet)
if !ok {
return errors.Errorf("invalid msg: %#v", m)
}
select {
case <-fc.ctx.Done():
return fc.ctx.Err()
case p2 := <-fc.recvChan:
*p = *p2
return nil
}
}
func (fc *fakeConn) SendMsg(m interface{}) error {
p, ok := m.(*fstypes.Packet)
if !ok {
return errors.Errorf("invalid msg: %#v", m)
}
p2 := *p
p2.Data = append([]byte{}, p2.Data...)
select {
case <-fc.ctx.Done():
return fc.ctx.Err()
case fc.sendChan <- &p2:
return nil
}
}
type fakeConnProto struct {
ctx context.Context
recvChan chan []byte
sendChan chan []byte
}
func (fc *fakeConnProto) Context() context.Context {
return fc.ctx
}
func (fc *fakeConnProto) RecvMsg(m interface{}) error {
p, ok := m.(*fstypes.Packet)
if !ok {
return errors.Errorf("invalid msg: %#v", m)
}
select {
case <-fc.ctx.Done():
return fc.ctx.Err()
case dt := <-fc.recvChan:
return p.Unmarshal(dt)
}
}
func (fc *fakeConnProto) SendMsg(m interface{}) error {
p, ok := m.(*fstypes.Packet)
if !ok {
return errors.Errorf("invalid msg: %#v", m)
}
dt, err := p.Marshal()
if err != nil {
return err
}
select {
case <-fc.ctx.Done():
return fc.ctx.Err()
case fc.sendChan <- dt:
return nil
}
}
|
