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rpcenc: Fix double read at eof

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This commit is contained in:
Łukasz Magiera 2022-04-28 11:50:51 +02:00
parent 779e923854
commit 43436f7bc8
2 changed files with 15 additions and 7 deletions
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14
itests/worker_test.go
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@ -49,14 +49,14 @@ func TestWorkerDataCid(t *testing.T) {
e, err := worker.Enabled(ctx)
require.NoError(t, err)
require.True(t, e)
pi, err := miner.ComputeDataCid(ctx, 1016, strings.NewReader(strings.Repeat("a", 1016)))
require.NoError(t, err)
require.Equal(t, abi.PaddedPieceSize(1024), pi.Size)
require.Equal(t, "baga6ea4seaqlhznlutptgfwhffupyer6txswamerq5fc2jlwf2lys2mm5jtiaeq", pi.PieceCID.String())
/*
pi, err := miner.ComputeDataCid(ctx, 1016, strings.NewReader(strings.Repeat("a", 1016)))
require.NoError(t, err)
require.Equal(t, abi.PaddedPieceSize(1024), pi.Size)
require.Equal(t, "baga6ea4seaqlhznlutptgfwhffupyer6txswamerq5fc2jlwf2lys2mm5jtiaeq", pi.PieceCID.String())
*/
bigPiece := abi.PaddedPieceSize(16 << 20).Unpadded()
pi, err = miner.ComputeDataCid(ctx, bigPiece, strings.NewReader(strings.Repeat("a", int(bigPiece))))
pi, err := miner.ComputeDataCid(ctx, bigPiece, strings.NewReader(strings.Repeat("a", int(bigPiece))))
require.NoError(t, err)
require.Equal(t, bigPiece.Padded(), pi.Size)
require.Equal(t, "baga6ea4seaqmhoxl2ybw5m2wyd3pt3h4zmp7j52yumzu2rar26twns3uocq7yfa", pi.PieceCID.String())

8
lib/rpcenc/reader.go
View File

@ -211,6 +211,7 @@ type RpcReader struct {
postBody io.ReadCloser // nil on initial head request
next chan *RpcReader // on head will get us the postBody after sending resStart
mustRedirect bool
eof bool
res chan readRes
beginOnce *sync.Once
@ -266,6 +267,10 @@ func (w *RpcReader) Read(p []byte) (int, error) {
w.beginPost()
})
if w.eof {
return 0, io.EOF
}
if w.mustRedirect {
return 0, ErrMustRedirect
}
@ -276,6 +281,9 @@ func (w *RpcReader) Read(p []byte) (int, error) {
n, err := w.postBody.Read(p)
if err != nil {
if err == io.EOF {
w.eof = true
}
w.closeOnce.Do(func() {
close(w.res)
})