[#178] wrapReader: Fix goroutine leak

In case of error in FrostFS.CreateObject wrapped reader
can be blocked because of synchronous pipe. We have to read out all payload in such case.

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

api/layer/frostfs_mock.go

@@ -28,19 +28,21 @@ import (
 type TestFrostFS struct {
 	FrostFS
 
-	objects      map[string]*object.Object
-	objectErrors map[string]error
-	containers   map[string]*container.Container
-	eaclTables   map[string]*eacl.Table
-	currentEpoch uint64
+	objects         map[string]*object.Object
+	objectErrors    map[string]error
+	objectPutErrors map[string]error
+	containers      map[string]*container.Container
+	eaclTables      map[string]*eacl.Table
+	currentEpoch    uint64
 }
 
 func NewTestFrostFS() *TestFrostFS {
 	return &TestFrostFS{
-		objects:      make(map[string]*object.Object),
-		objectErrors: make(map[string]error),
-		containers:   make(map[string]*container.Container),
-		eaclTables:   make(map[string]*eacl.Table),
+		objects:         make(map[string]*object.Object),
+		objectErrors:    make(map[string]error),
+		objectPutErrors: make(map[string]error),
+		containers:      make(map[string]*container.Container),
+		eaclTables:      make(map[string]*eacl.Table),
 	}
 }
 
@@ -56,6 +58,14 @@ func (t *TestFrostFS) SetObjectError(addr oid.Address, err error) {
 	}
 }
 
+func (t *TestFrostFS) SetObjectPutError(fileName string, err error) {
+	if err == nil {
+		delete(t.objectPutErrors, fileName)
+	} else {
+		t.objectPutErrors[fileName] = err
+	}
+}
+
 func (t *TestFrostFS) Objects() []*object.Object {
 	res := make([]*object.Object, 0, len(t.objects))
 
@@ -199,6 +209,10 @@ func (t *TestFrostFS) CreateObject(_ context.Context, prm PrmObjectCreate) (oid.
 
 	attrs := make([]object.Attribute, 0)
 
+	if err := t.objectPutErrors[prm.Filepath]; err != nil {
+		return oid.ID{}, err
+	}
+
 	if prm.Filepath != "" {
 		a := object.NewAttribute()
 		a.SetKey(object.AttributeFilePath)