fix: use the right channel to feed the data in (#18605)

this PR fixes a regression in batch replication
where we weren't sending any data from the Walk()
results due to incorrect channels being used.

cmd/batch-handlers.go

@@ -1007,12 +1007,9 @@ func (r *BatchJobReplicateV1) Start(ctx context.Context, api ObjectLayer, job Ba
 			// None of the provided metadata filters match skip the object.
 			return false
 		}
-		// if one of source or target is non MinIO, just replicate the top most version like `mc mirror`
-		if (r.Target.Type == BatchJobReplicateResourceS3 || r.Source.Type == BatchJobReplicateResourceS3) && !info.IsLatest {
-			return false
-		}
 
-		return true
+		// if one of source or target is non MinIO, just replicate the top most version like `mc mirror`
+		return !((r.Target.Type == BatchJobReplicateResourceS3 || r.Source.Type == BatchJobReplicateResourceS3) && !info.IsLatest)
 	}
 
 	u, err := url.Parse(r.Target.Endpoint)
@@ -1123,8 +1120,7 @@ func (r *BatchJobReplicateV1) Start(ctx context.Context, api ObjectLayer, job Ba
 		// one of source/target is s3, skip delete marker and all versions under the same object name.
 		s3Type := r.Target.Type == BatchJobReplicateResourceS3 || r.Source.Type == BatchJobReplicateResourceS3
 
-		results := make(chan ObjectInfo, 100)
-		if err := api.Walk(ctx, r.Source.Bucket, r.Source.Prefix, results, WalkOptions{
+		if err := api.Walk(ctx, r.Source.Bucket, r.Source.Prefix, walkCh, WalkOptions{
 			Marker:   lastObject,
 			Filter:   selectObj,
 			AskDisks: walkQuorum,

cmd/bucket-replication-metrics.go

@@ -337,13 +337,13 @@ type SMA struct {
 	filledBuf bool
 }
 
-func newSMA(len int) *SMA {
-	if len <= 0 {
-		len = defaultWindowSize
+func newSMA(ln int) *SMA {
+	if ln <= 0 {
+		ln = defaultWindowSize
 	}
 	return &SMA{
-		buf:    make([]float64, len),
-		window: len,
+		buf:    make([]float64, ln),
+		window: ln,
 		idx:    0,
 	}
 }

cmd/bucket-replication.go

@@ -373,15 +373,14 @@ func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelet
 			if oi.DeleteMarker && (validReplStatus || replicate) {
 				dsc.Set(newReplicateTargetDecision(tgtArn, replicate, sync))
 				continue
-			} else {
-				// can be the case that other cluster is down and duplicate `mc rm --vid`
-				// is issued - this still needs to be replicated back to the other target
-				if !oi.VersionPurgeStatus.Empty() {
-					replicate = oi.VersionPurgeStatus == Pending || oi.VersionPurgeStatus == Failed
-					dsc.Set(newReplicateTargetDecision(tgtArn, replicate, sync))
-				}
-				continue
 			}
+			// can be the case that other cluster is down and duplicate `mc rm --vid`
+			// is issued - this still needs to be replicated back to the other target
+			if !oi.VersionPurgeStatus.Empty() {
+				replicate = oi.VersionPurgeStatus == Pending || oi.VersionPurgeStatus == Failed
+				dsc.Set(newReplicateTargetDecision(tgtArn, replicate, sync))
+			}
+			continue
 		}
 		tgt := globalBucketTargetSys.GetRemoteTargetClient(bucket, tgtArn)
 		// the target online status should not be used here while deciding

cmd/data-scanner.go

@@ -581,12 +581,12 @@ func (f *folderScanner) scanFolder(ctx context.Context, folder cachedFolder, int
 						foundAny = true
 						break
 					}
-					if next := f.updateCache.searchParent(parent); next == nil {
+					next := f.updateCache.searchParent(parent)
+					if next == nil {
 						foundAny = true
 						break
-					} else {
-						parent = *next
 					}
+					parent = *next
 				}
 				if !foundAny {
 					// Add non-compacted empty entry.

cmd/erasure-utils.go

@@ -72,15 +72,15 @@ func writeDataBlocks(ctx context.Context, dst io.Writer, enBlocks [][]byte, data
 			// Decrement offset.
 			offset -= int64(len(block))
 			continue
-		} else {
-			// Skip until offset.
-			block = block[offset:]
-
-			// Reset the offset for next iteration to read everything
-			// from subsequent blocks.
-			offset = 0
 		}
 
+		// Skip until offset.
+		block = block[offset:]
+
+		// Reset the offset for next iteration to read everything
+		// from subsequent blocks.
+		offset = 0
+
 		// We have written all the blocks, write the last remaining block.
 		if write < int64(len(block)) {
 			n, err := dst.Write(block[:write])

cmd/tier.go

@@ -148,12 +148,11 @@ func (config *TierConfigMgr) Remove(ctx context.Context, tier string) error {
 		return err
 	} else if inuse {
 		return errTierBackendNotEmpty
-	} else {
-		config.Lock()
-		delete(config.Tiers, tier)
-		delete(config.drivercache, tier)
-		config.Unlock()
 	}
+	config.Lock()
+	delete(config.Tiers, tier)
+	delete(config.drivercache, tier)
+	config.Unlock()
 	return nil
 }