TrueCloudLab
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frostfs-sdk-go
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[#63] transformer: Add context to methods 

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
pull/63/head
Evgenii Stratonikov 2023-04-21 13:04:44 +03:00
parent d0762d037d
commit 0fa23a9b14
5 changed files with 49 additions and 38 deletions
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14
object/transformer/channel.go
View File

@ -1,6 +1,8 @@
package transformer
import (
"context"
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
"github.com/nspcc-dev/neo-go/pkg/util/slice"
)
@ -20,23 +22,27 @@ func NewChannelTarget(ch chan<- *objectSDK.Object) ObjectTarget {
}
// WriteHeader implements the ObjectTarget interface.
func (c *chanTarget) WriteHeader(object *objectSDK.Object) error {
func (c *chanTarget) WriteHeader(_ context.Context, object *objectSDK.Object) error {
c.header = object
return nil
}
// Write implements the ObjectTarget interface.
func (c *chanTarget) Write(p []byte) (n int, err error) {
func (c *chanTarget) Write(_ context.Context, p []byte) (n int, err error) {
c.payload = append(c.payload, p...)
return len(p), nil
}
// Close implements the ObjectTarget interface.
func (c *chanTarget) Close() (*AccessIdentifiers, error) {
func (c *chanTarget) Close(ctx context.Context) (*AccessIdentifiers, error) {
if len(c.payload) != 0 {
c.header.SetPayload(slice.Copy(c.payload))
}
c.ch <- c.header
select {
case c.ch <- c.header:
case <-ctx.Done():
return nil, ctx.Err()
}
c.header = nil
c.payload = nil

6
object/transformer/channel_test.go
View File

@ -1,6 +1,7 @@
package transformer
import (
"context"
"crypto/rand"
"testing"
@ -29,8 +30,9 @@ func TestChannelTarget(t *testing.T) {
payload := make([]byte, maxSize*2+maxSize/2)
_, _ = rand.Read(payload)
expectedIDs := writeObject(t, testTarget, hdr, payload)
actualIDs := writeObject(t, chTarget, hdr, payload)
ctx := context.Background()
expectedIDs := writeObject(t, ctx, testTarget, hdr, payload)
actualIDs := writeObject(t, ctx, chTarget, hdr, payload)
_ = expectedIDs
_ = actualIDs
//require.Equal(t, expectedIDs, actualIDs)

29
object/transformer/transformer.go
View File

@ -1,6 +1,7 @@
package transformer
import (
"context"
"crypto/ecdsa"
"crypto/sha256"
"fmt"
@ -52,7 +53,7 @@ func NewPayloadSizeLimiter(p Params) ObjectTarget {
}
}
func (s *payloadSizeLimiter) WriteHeader(hdr *object.Object) error {
func (s *payloadSizeLimiter) WriteHeader(_ context.Context, hdr *object.Object) error {
s.current = fromObject(hdr)
s.initialize()
@ -60,16 +61,16 @@ func (s *payloadSizeLimiter) WriteHeader(hdr *object.Object) error {
return nil
}
func (s *payloadSizeLimiter) Write(p []byte) (int, error) {
if err := s.writeChunk(p); err != nil {
func (s *payloadSizeLimiter) Write(ctx context.Context, p []byte) (int, error) {
if err := s.writeChunk(ctx, p); err != nil {
return 0, err
}
return len(p), nil
}
func (s *payloadSizeLimiter) Close() (*AccessIdentifiers, error) {
return s.release(true)
func (s *payloadSizeLimiter) Close(ctx context.Context) (*AccessIdentifiers, error) {
return s.release(ctx, true)
}
func (s *payloadSizeLimiter) initialize() {
@ -132,7 +133,7 @@ func (s *payloadSizeLimiter) initPayloadHashers() {
}
// nolint: funlen
func (s *payloadSizeLimiter) release(finalize bool) (*AccessIdentifiers, error) {
func (s *payloadSizeLimiter) release(ctx context.Context, finalize bool) (*AccessIdentifiers, error) {
// Arg finalize is true only when called from Close method.
// We finalize parent and generate linking objects only if it is more
// than 1 object in split-chain.
@ -185,11 +186,11 @@ func (s *payloadSizeLimiter) release(finalize bool) (*AccessIdentifiers, error)
return nil, fmt.Errorf("could not finalize object: %w", err)
}
if err := s.NextTarget.WriteHeader(s.current); err != nil {
if err := s.NextTarget.WriteHeader(ctx, s.current); err != nil {
return nil, fmt.Errorf("could not write header to next target: %w", err)
}
if _, err := s.NextTarget.Close(); err != nil {
if _, err := s.NextTarget.Close(ctx); err != nil {
return nil, fmt.Errorf("could not close next target: %w", err)
}
@ -209,7 +210,7 @@ func (s *payloadSizeLimiter) release(finalize bool) (*AccessIdentifiers, error)
s.initializeLinking(ids.ParentHeader)
s.initializeCurrent()
if _, err := s.release(false); err != nil {
if _, err := s.release(ctx, false); err != nil {
return nil, fmt.Errorf("could not release linking object: %w", err)
}
}
@ -224,7 +225,7 @@ func (s *payloadSizeLimiter) initializeLinking(parHdr *object.Object) {
s.current.SetSplitID(s.splitID)
}
func (s *payloadSizeLimiter) writeChunk(chunk []byte) error {
func (s *payloadSizeLimiter) writeChunk(ctx context.Context, chunk []byte) error {
for {
// statement is true if the previous write of bytes reached exactly the boundary.
if s.written > 0 && s.written%s.MaxSize == 0 {
@ -233,7 +234,7 @@ func (s *payloadSizeLimiter) writeChunk(chunk []byte) error {
}
// we need to release current object
if _, err := s.release(false); err != nil {
if _, err := s.release(ctx, false); err != nil {
return fmt.Errorf("could not release object: %w", err)
}
@ -252,7 +253,7 @@ func (s *payloadSizeLimiter) writeChunk(chunk []byte) error {
cut = leftToEdge
}
if err := s.writeHashes(chunk[:cut]); err != nil {
if err := s.writeHashes(ctx, chunk[:cut]); err != nil {
return fmt.Errorf("could not write chunk to target: %w", err)
}
@ -268,8 +269,8 @@ func (s *payloadSizeLimiter) writeChunk(chunk []byte) error {
}
}
func (s *payloadSizeLimiter) writeHashes(chunk []byte) error {
_, err := s.NextTarget.Write(chunk)
func (s *payloadSizeLimiter) writeHashes(ctx context.Context, chunk []byte) error {
_, err := s.NextTarget.Write(ctx, chunk)
if err != nil {
return err
}

30
object/transformer/transformer_test.go
View File

@ -1,6 +1,7 @@
package transformer
import (
"context"
"crypto/rand"
"crypto/sha256"
"testing"
@ -31,7 +32,7 @@ func TestTransformer(t *testing.T) {
expectedPayload := make([]byte, maxSize*2+maxSize/2)
_, _ = rand.Read(expectedPayload)
ids := writeObject(t, target, hdr, expectedPayload)
ids := writeObject(t, context.Background(), target, hdr, expectedPayload)
require.Equal(t, 4, len(tt.objects)) // 3 parts + linking object
var actualPayload []byte
@ -85,13 +86,13 @@ func newObject(cnr cid.ID) *objectSDK.Object {
return hdr
}
func writeObject(t *testing.T, target ObjectTarget, header *objectSDK.Object, payload []byte) *AccessIdentifiers {
require.NoError(t, target.WriteHeader(header))
func writeObject(t *testing.T, ctx context.Context, target ObjectTarget, header *objectSDK.Object, payload []byte) *AccessIdentifiers {
require.NoError(t, target.WriteHeader(ctx, header))
_, err := target.Write(payload)
_, err := target.Write(ctx, payload)
require.NoError(t, err)
ids, err := target.Close()
ids, err := target.Close(ctx)
require.NoError(t, err)
return ids
@ -112,18 +113,19 @@ func benchmarkTransformer(b *testing.B, header *objectSDK.Object, payloadSize in
const maxSize = 64 * 1024 * 1024
payload := make([]byte, payloadSize)
ctx := context.Background()
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
f, _ := newPayloadSizeLimiter(maxSize, benchTarget{})
if err := f.WriteHeader(header); err != nil {
if err := f.WriteHeader(ctx, header); err != nil {
b.Fatalf("write header: %v", err)
}
if _, err := f.Write(payload); err != nil {
if _, err := f.Write(ctx, payload); err != nil {
b.Fatalf("write: %v", err)
}
if _, err := f.Close(); err != nil {
if _, err := f.Close(ctx); err != nil {
b.Fatalf("close: %v", err)
}
}
@ -152,15 +154,15 @@ func (s dummyEpochSource) CurrentEpoch() uint64 {
type benchTarget struct{}
func (benchTarget) WriteHeader(object *objectSDK.Object) error {
func (benchTarget) WriteHeader(_ context.Context, object *objectSDK.Object) error {
return nil
}
func (benchTarget) Write(p []byte) (n int, err error) {
func (benchTarget) Write(_ context.Context, p []byte) (n int, err error) {
return len(p), nil
}
func (benchTarget) Close() (*AccessIdentifiers, error) {
func (benchTarget) Close(context.Context) (*AccessIdentifiers, error) {
return nil, nil
}
@ -170,17 +172,17 @@ type testTarget struct {
objects []*objectSDK.Object
}
func (tt *testTarget) WriteHeader(object *objectSDK.Object) error {
func (tt *testTarget) WriteHeader(_ context.Context, object *objectSDK.Object) error {
tt.current = object
return nil
}
func (tt *testTarget) Write(p []byte) (n int, err error) {
func (tt *testTarget) Write(_ context.Context, p []byte) (n int, err error) {
tt.payload = append(tt.payload, p...)
return len(p), nil
}
func (tt *testTarget) Close() (*AccessIdentifiers, error) {
func (tt *testTarget) Close(_ context.Context) (*AccessIdentifiers, error) {
tt.current.SetPayload(tt.payload)
tt.objects = append(tt.objects, tt.current)
tt.current = nil

8
object/transformer/types.go
View File

@ -1,7 +1,7 @@
package transformer
import (
"io"
"context"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@ -31,14 +31,14 @@ type ObjectTarget interface {
// that depends on the implementation.
//
// Must not be called after Close call.
WriteHeader(*object.Object) error
WriteHeader(context.Context, *object.Object) error
// Write writes object payload chunk.
//
// Can be called multiple times.
//
// Must not be called after Close call.
io.Writer
Write(context.Context, []byte) (int, error)
// Close is used to finish object writing.
//
@ -48,7 +48,7 @@ type ObjectTarget interface {
// Must be called no more than once. Control remains with the caller.
// Re-calling can lead to undefined behavior
// that depends on the implementation.
Close() (*AccessIdentifiers, error)
Close(context.Context) (*AccessIdentifiers, error)
}
// TargetInitializer represents ObjectTarget constructor.