Fix few bugs

README.md

@@ -22,6 +22,7 @@ With 128 workers we get avg sync speed around 2k obj/sec (small objects 1-20 kb)
 * Each object is loaded into RAM. So you need `<avg object size> * <workers count>` RAM.  
   If you don't have enough RAM, you can use swap. A large (32-64 Gb) swap on SSD does not affect the tool performance.  
   This happened because the tool was designed to synchronize billions of small files and optimized for this workload.
+  To avoid this you can use streaming storage drivers (now available only for S3 and FS). It's uses less RAM, but slower on small objects.
 
 ## Usage
 ```

cli/cli.go

@@ -97,6 +97,7 @@ type args struct {
 	DisableHTTP2      bool   `arg:"--disable-http2" help:"Disable HTTP2 for http client"`
 	ListBuffer        uint   `arg:"--list-buffer" help:"Size of list buffer" default:"1000"`
 	SkipSSLVerify     bool   `arg:"--skip-ssl-verify" help:"Disable SSL verification for S3"`
+	ServerGzip        bool   `arg:"--server-gzip" help:"Workaround for S3 servers with enabled gzip compression for all files."`
 	Profiler          bool   `arg:"--profiler" help:"Enable profiler on :8080"`
 	// Rate Limit
 	RateLimitObjPerSec uint   `arg:"--ratelimit-objects" help:"Rate limit objects per second"`

cli/setup.go

@@ -21,7 +21,7 @@ func setupStorages(ctx context.Context, syncGroup *pipeline.Group, cli *argsPars
 	switch cli.Source.Type {
 	case storage.TypeS3:
 		sourceStorage = s3.NewS3Storage(cli.SourceNoSign, cli.SourceKey, cli.SourceSecret, cli.SourceToken, cli.SourceRegion, cli.SourceEndpoint,
-			cli.Source.Bucket, cli.Source.Path, cli.S3KeysPerReq, cli.S3Retry, cli.S3RetryInterval, cli.SkipSSLVerify,
+			cli.Source.Bucket, cli.Source.Path, cli.S3KeysPerReq, cli.S3Retry, cli.S3RetryInterval, cli.SkipSSLVerify, cli.ServerGzip,
 		)
 	case storage.TypeS3Stream:
 		sourceStorage = s3stream.NewS3StreamStorage(cli.SourceNoSign, cli.SourceKey, cli.SourceSecret, cli.SourceToken, cli.SourceRegion, cli.SourceEndpoint,
@@ -39,7 +39,7 @@ func setupStorages(ctx context.Context, syncGroup *pipeline.Group, cli *argsPars
 	switch cli.Target.Type {
 	case storage.TypeS3:
 		targetStorage = s3.NewS3Storage(cli.TargetNoSign, cli.TargetKey, cli.TargetSecret, cli.TargetToken, cli.TargetRegion, cli.TargetEndpoint,
-			cli.Target.Bucket, cli.Target.Path, cli.S3KeysPerReq, cli.S3Retry, cli.S3RetryInterval, cli.SkipSSLVerify,
+			cli.Target.Bucket, cli.Target.Path, cli.S3KeysPerReq, cli.S3Retry, cli.S3RetryInterval, cli.SkipSSLVerify, cli.ServerGzip,
 		)
 	case storage.TypeS3Stream:
 		targetStorage = s3stream.NewS3StreamStorage(cli.TargetNoSign, cli.TargetKey, cli.TargetSecret, cli.TargetToken, cli.TargetRegion, cli.TargetEndpoint,

pipeline/collection/misc.go

@@ -2,9 +2,10 @@ package collection
 
 import (
 	"github.com/larrabee/ratelimit"
+	"github.com/sirupsen/logrus"
+
 	"github.com/larrabee/s3sync/pipeline"
 	"github.com/larrabee/s3sync/storage"
-	"github.com/sirupsen/logrus"
 )
 
 // Terminator like a /dev/null
@@ -27,9 +28,10 @@ var Logger pipeline.StepFn = func(group *pipeline.Group, stepNum int, input <-ch
 	for obj := range input {
 		if ok {
 			cfg.WithFields(logrus.Fields{
-				"key":          *obj.Key,
-				"size":         *obj.ContentLength,
-				"Content-Type": *obj.ContentType,
+				"key":              storage.ToValue(obj.Key),
+				"size":             storage.ToValue(obj.ContentLength),
+				"Content-Type":     storage.ToValue(obj.ContentType),
+				"Content-Encoding": storage.ToValue(obj.ContentEncoding),
 			}).Infof("Sync file")
 			output <- obj
 		}

storage/s3/opts.go

@@ -0,0 +1,11 @@
+package s3
+
+import (
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+func withAcceptEncoding(e string) request.Option {
+	return func(r *request.Request) {
+		r.HTTPRequest.Header.Add("Accept-Encoding", e)
+	}
+}

storage/s3/s3.go

@@ -5,13 +5,14 @@ import (
 	"context"
 	"crypto/tls"
 	"errors"
-	"github.com/aws/aws-sdk-go/aws/request"
 	"io"
 	"net/http"
 	"net/url"
 	"strings"
 	"time"
 
+	"github.com/aws/aws-sdk-go/aws/request"
+
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/aws/aws-sdk-go/aws/defaults"
@@ -34,12 +35,13 @@ type S3Storage struct {
 	ctx           context.Context
 	listMarker    *string
 	rlBucket      ratelimit.Bucket
+	serverGzip    bool
 }
 
 // NewS3Storage return new configured S3 storage.
 //
 // You should always create new storage with this constructor.
-func NewS3Storage(awsNoSign bool, awsAccessKey, awsSecretKey, awsToken, awsRegion, endpoint, bucketName, prefix string, keysPerReq int64, retryCnt uint, retryDelay time.Duration, skipSSLVerify bool) *S3Storage {
+func NewS3Storage(awsNoSign bool, awsAccessKey, awsSecretKey, awsToken, awsRegion, endpoint, bucketName, prefix string, keysPerReq int64, retryCnt uint, retryDelay time.Duration, skipSSLVerify bool, serverGzip bool) *S3Storage {
 	sess := session.Must(session.NewSessionWithOptions(session.Options{
 		SharedConfigState: session.SharedConfigEnable,
 	}))
@@ -83,6 +85,7 @@ func NewS3Storage(awsNoSign bool, awsAccessKey, awsSecretKey, awsToken, awsRegio
 		retryInterval: retryDelay,
 		ctx:           context.TODO(),
 		rlBucket:      ratelimit.NewFakeBucket(),
+		serverGzip:    serverGzip,
 	}
 
 	return &st
@@ -105,7 +108,7 @@ func (st *S3Storage) WithRateLimit(limit int) error {
 
 // List S3 bucket and send founded objects to chan.
 func (st *S3Storage) List(output chan<- *storage.Object) error {
-	listObjectsFn := func(p *s3.ListObjectsOutput, lastPage bool) bool {
+	listObjectsFn := func(p *s3.ListObjectsV2Output, lastPage bool) bool {
 		for _, o := range p.Contents {
 			key, _ := url.QueryUnescape(aws.StringValue(o.Key))
 			key = strings.Replace(key, st.prefix, "", 1)
@@ -117,19 +120,19 @@ func (st *S3Storage) List(output chan<- *storage.Object) error {
 				IsLatest:     aws.Bool(true),
 			}
 		}
-		st.listMarker = p.Marker
+		st.listMarker = p.NextContinuationToken
 		return !lastPage // continue paging
 	}
 
-	input := &s3.ListObjectsInput{
-		Bucket:       st.awsBucket,
-		Prefix:       aws.String(st.prefix),
-		MaxKeys:      aws.Int64(st.keysPerReq),
-		EncodingType: aws.String(s3.EncodingTypeUrl),
-		Marker:       st.listMarker,
+	input := &s3.ListObjectsV2Input{
+		Bucket:            st.awsBucket,
+		Prefix:            aws.String(st.prefix),
+		MaxKeys:           aws.Int64(st.keysPerReq),
+		EncodingType:      aws.String(s3.EncodingTypeUrl),
+		ContinuationToken: st.listMarker,
 	}
 
-	if err := st.awsSvc.ListObjectsPagesWithContext(st.ctx, input, listObjectsFn); err != nil {
+	if err := st.awsSvc.ListObjectsV2PagesWithContext(st.ctx, input, listObjectsFn); err != nil {
 		return err
 	}
 	storage.Log.Debugf("Listing bucket finished")
@@ -191,12 +194,6 @@ func (st *S3Storage) PutObject(obj *storage.Object) error {
 	return nil
 }
 
-func withAcceptEncoding(e string) request.Option {
-	return func(r *request.Request) {
-		r.HTTPRequest.Header.Add("Accept-Encoding", e)
-	}
-}
-
 // GetObjectContent read object content and metadata from S3.
 func (st *S3Storage) GetObjectContent(obj *storage.Object) error {
 	input := &s3.GetObjectInput{
@@ -205,7 +202,12 @@ func (st *S3Storage) GetObjectContent(obj *storage.Object) error {
 		VersionId: obj.VersionId,
 	}
 
-	result, err := st.awsSvc.GetObjectWithContext(st.ctx, input, withAcceptEncoding("gzip"))
+	opts := make([]request.Option, 0, 1)
+	if !st.serverGzip {
+		opts = append(opts, withAcceptEncoding("gzip"))
+	}
+
+	result, err := st.awsSvc.GetObjectWithContext(st.ctx, input, opts...)
 	if err != nil {
 		return err
 	}

storage/utils.go

@@ -58,3 +58,14 @@ func GetInsecureRandString(n int) string {
 
 	return sb.String()
 }
+
+func ToPtr[K any](val K) *K {
+	return &val
+}
+
+func ToValue[K any](val *K) K {
+	if val == nil {
+		return *new(K)
+	}
+	return *val
+}