Feat/partial delete suppport (#626)

* fix(objecttree):fixed status code with 404

* fix(filechange):removed unused error

* fix(devops): fixed checkout action issue

.github/workflows/config_change_alert.yaml

@@ -12,7 +12,7 @@ jobs:
   test:
     runs-on: docker-builds
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v1
         with:
           fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.
 

code/go/0chain.net/blobbercore/allocation/allocationchange.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/datastore"
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/reference"
-	"github.com/0chain/blobber/code/go/0chain.net/core/common"
 	"github.com/0chain/blobber/code/go/0chain.net/core/logging"
 	"github.com/0chain/gosdk/constants"
 
@@ -21,8 +20,6 @@ const (
 	DeletedConnection    = 3
 )
 
-var OperationNotApplicable = common.NewError("operation_not_valid", "Not an applicable operation")
-
 // AllocationChangeProcessor request transaction of file operation. it is president in postgres, and can be rebuilt for next http reqeust(eg CommitHandler)
 type AllocationChangeProcessor interface {
 	CommitToFileStore(ctx context.Context) error

code/go/0chain.net/blobbercore/allocation/attributesfilechange.go

@@ -108,7 +108,7 @@ func (ac *AttributesChange) Unmarshal(val string) (err error) {
 
 // The DeleteTempFile returns OperationNotApplicable error.
 func (ac *AttributesChange) DeleteTempFile() (err error) {
-	return OperationNotApplicable
+	return nil
 }
 
 // The CommitToFileStore does nothing.

code/go/0chain.net/blobbercore/allocation/deletefilechange.go

@@ -53,7 +53,7 @@ func (nf *DeleteFileChange) Unmarshal(input string) error {
 }
 
 func (nf *DeleteFileChange) DeleteTempFile() error {
-	return OperationNotApplicable
+	return nil
 }
 
 func (nf *DeleteFileChange) CommitToFileStore(ctx context.Context) error {

code/go/0chain.net/blobbercore/allocation/renamefilechange.go

@@ -21,7 +21,7 @@ type RenameFileChange struct {
 }
 
 func (rf *RenameFileChange) DeleteTempFile() error {
-	return OperationNotApplicable
+	return nil
 }
 
 func (rf *RenameFileChange) ApplyChange(ctx context.Context, change *AllocationChange, allocationRoot string) (*reference.Ref, error) {

code/go/0chain.net/blobbercore/handler/handler.go

@@ -326,7 +326,7 @@ func ObjectTreeHandler(ctx context.Context, r *http.Request) (interface{}, int,
 	response, err := storageHandler.GetObjectTree(ctx, r)
 	if err != nil {
 		if errors.Is(common.ErrNotFound, err) {
-			return response, http.StatusNoContent, nil
+			return response, http.StatusNotFound, nil
 		}
 		return nil, http.StatusBadRequest, err
 	}