[#168] eacl: Replace pointer slices with non-pointer slices

- []*Record => []Record
 - []*Filter => []Filter
 - []*Target => []Target

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

eacl/record.go

@@ -20,22 +20,22 @@ import (
 type Record struct {
 	action    Action
 	operation Operation
-	filters   []*Filter
-	targets   []*Target
+	filters   []Filter
+	targets   []Target
 }
 
 // Targets returns list of target subjects to apply ACL rule to.
-func (r Record) Targets() []*Target {
+func (r Record) Targets() []Target {
 	return r.targets
 }
 
 // SetTargets sets list of target subjects to apply ACL rule to.
-func (r *Record) SetTargets(targets ...*Target) {
+func (r *Record) SetTargets(targets ...Target) {
 	r.targets = targets
 }
 
 // Filters returns list of filters to match and see if rule is applicable.
-func (r Record) Filters() []*Filter {
+func (r Record) Filters() []Filter {
 	return r.filters
 }
 
@@ -61,7 +61,7 @@ func (r *Record) SetAction(action Action) {
 
 // AddRecordTarget adds single Target to the Record.
 func AddRecordTarget(r *Record, t *Target) {
-	r.SetTargets(append(r.Targets(), t)...)
+	r.SetTargets(append(r.Targets(), *t)...)
 }
 
 // AddFormedTarget forms Target with specified Role and list of
@@ -75,7 +75,7 @@ func AddFormedTarget(r *Record, role Role, keys ...ecdsa.PublicKey) {
 }
 
 func (r *Record) addFilter(from FilterHeaderType, m Match, keyTyp filterKeyType, key string, val fmt.Stringer) {
-	filter := &Filter{
+	filter := Filter{
 		from: from,
 		key: filterKey{
 			typ: keyTyp,
@@ -162,18 +162,18 @@ func (r *Record) ToV2() *v2acl.Record {
 	v2 := new(v2acl.Record)
 
 	if r.targets != nil {
-		targets := make([]*v2acl.Target, 0, len(r.targets))
-		for _, target := range r.targets {
-			targets = append(targets, target.ToV2())
+		targets := make([]v2acl.Target, len(r.targets))
+		for i := range r.targets {
+			targets[i] = *r.targets[i].ToV2()
 		}
 
 		v2.SetTargets(targets)
 	}
 
 	if r.filters != nil {
-		filters := make([]*v2acl.HeaderFilter, 0, len(r.filters))
-		for _, filter := range r.filters {
-			filters = append(filters, filter.ToV2())
+		filters := make([]v2acl.HeaderFilter, len(r.filters))
+		for i := range r.filters {
+			filters[i] = *r.filters[i].ToV2()
 		}
 
 		v2.SetFilters(filters)
@@ -201,8 +201,8 @@ func CreateRecord(action Action, operation Operation) *Record {
 	r := NewRecord()
 	r.action = action
 	r.operation = operation
-	r.targets = []*Target{}
-	r.filters = []*Filter{}
+	r.targets = []Target{}
+	r.filters = []Filter{}
 
 	return r
 }
@@ -221,14 +221,14 @@ func NewRecordFromV2(record *v2acl.Record) *Record {
 	v2targets := record.GetTargets()
 	v2filters := record.GetFilters()
 
-	r.targets = make([]*Target, 0, len(v2targets))
+	r.targets = make([]Target, len(v2targets))
 	for i := range v2targets {
-		r.targets = append(r.targets, NewTargetFromV2(v2targets[i]))
+		r.targets[i] = *NewTargetFromV2(&v2targets[i])
 	}
 
-	r.filters = make([]*Filter, 0, len(v2filters))
+	r.filters = make([]Filter, len(v2filters))
 	for i := range v2filters {
-		r.filters = append(r.filters, NewFilterFromV2(v2filters[i]))
+		r.filters[i] = *NewFilterFromV2(&v2filters[i])
 	}
 
 	return r

eacl/record_test.go

@@ -63,18 +63,14 @@ func TestAddFormedTarget(t *testing.T) {
 		},
 	}
 
-	targets := make([]*Target, 0, len(items))
+	targets := make([]Target, len(items))
 
 	r := NewRecord()
 
-	for _, item := range items {
-		tgt := NewTarget()
-		tgt.SetRole(item.role)
-		SetTargetECDSAKeys(tgt, ecdsaKeysToPtrs(item.keys)...)
-
-		targets = append(targets, tgt)
-
-		AddFormedTarget(r, item.role, item.keys...)
+	for i := range items {
+		targets[i].SetRole(items[i].role)
+		SetTargetECDSAKeys(&targets[i], ecdsaKeysToPtrs(items[i].keys)...)
+		AddFormedTarget(r, items[i].role, items[i].keys...)
 	}
 
 	tgts := r.Targets()
@@ -86,9 +82,9 @@ func TestAddFormedTarget(t *testing.T) {
 }
 
 func TestRecord_AddFilter(t *testing.T) {
-	filters := []*Filter{
-		newObjectFilter(MatchStringEqual, "some name", "ContainerID"),
-		newObjectFilter(MatchStringNotEqual, "X-Header-Name", "X-Header-Value"),
+	filters := []Filter{
+		*newObjectFilter(MatchStringEqual, "some name", "ContainerID"),
+		*newObjectFilter(MatchStringNotEqual, "X-Header-Name", "X-Header-Value"),
 	}
 
 	r := NewRecord()

eacl/table.go

@@ -18,7 +18,7 @@ type Table struct {
 	cid     *cid.ID
 	token   *session.Token
 	sig     *signature.Signature
-	records []*Record
+	records []Record
 }
 
 // CID returns identifier of the container that should use given access control rules.
@@ -42,14 +42,14 @@ func (t *Table) SetVersion(version version.Version) {
 }
 
 // Records returns list of extended ACL rules.
-func (t Table) Records() []*Record {
+func (t Table) Records() []Record {
 	return t.records
 }
 
 // AddRecord adds single eACL rule.
 func (t *Table) AddRecord(r *Record) {
 	if r != nil {
-		t.records = append(t.records, r)
+		t.records = append(t.records, *r)
 	}
 }
 
@@ -90,9 +90,9 @@ func (t *Table) ToV2() *v2acl.Table {
 	}
 
 	if t.records != nil {
-		records := make([]*v2acl.Record, 0, len(t.records))
-		for _, record := range t.records {
-			records = append(records, record.ToV2())
+		records := make([]v2acl.Record, len(t.records))
+		for i := range t.records {
+			records[i] = *t.records[i].ToV2()
 		}
 
 		v2.SetRecords(records)
@@ -157,10 +157,10 @@ func NewTableFromV2(table *v2acl.Table) *Table {
 
 	// set eacl records
 	v2records := table.GetRecords()
-	t.records = make([]*Record, 0, len(v2records))
+	t.records = make([]Record, len(v2records))
 
 	for i := range v2records {
-		t.records = append(t.records, NewRecordFromV2(v2records[i]))
+		t.records[i] = *NewRecordFromV2(&v2records[i])
 	}
 
 	return t

eacl/table_test.go

@@ -51,14 +51,14 @@ func TestTable(t *testing.T) {
 }
 
 func TestTable_AddRecord(t *testing.T) {
-	records := []*eacl.Record{
-		eacl.CreateRecord(eacl.ActionDeny, eacl.OperationDelete),
-		eacl.CreateRecord(eacl.ActionAllow, eacl.OperationPut),
+	records := []eacl.Record{
+		*eacl.CreateRecord(eacl.ActionDeny, eacl.OperationDelete),
+		*eacl.CreateRecord(eacl.ActionAllow, eacl.OperationPut),
 	}
 
 	table := eacl.NewTable()
 	for _, record := range records {
-		table.AddRecord(record)
+		table.AddRecord(&record)
 	}
 
 	require.Equal(t, records, table.Records())

eacl/test/generate.go

@@ -26,7 +26,7 @@ func Record() *eacl.Record {
 
 	x.SetAction(eacl.ActionAllow)
 	x.SetOperation(eacl.OperationRangeHash)
-	x.SetTargets(Target(), Target())
+	x.SetTargets(*Target(), *Target())
 	x.AddObjectContainerIDFilter(eacl.MatchStringEqual, cidtest.ID())
 	x.AddObjectOwnerIDFilter(eacl.MatchStringNotEqual, ownertest.ID())
 

eacl/validator.go

@@ -30,7 +30,7 @@ func (v *Validator) CalculateAction(unit *ValidationUnit) Action {
 		}
 
 		// check target
-		if !targetMatches(unit, record) {
+		if !targetMatches(unit, &record) {
 			continue
 		}
 
@@ -51,7 +51,7 @@ func (v *Validator) CalculateAction(unit *ValidationUnit) Action {
 //  - positive value if no matching header is found for at least one filter;
 //  - zero if at least one suitable header is found for all filters;
 //  - negative value if the headers of at least one filter cannot be obtained.
-func matchFilters(hdrSrc TypedHeaderSource, filters []*Filter) int {
+func matchFilters(hdrSrc TypedHeaderSource, filters []Filter) int {
 	matched := 0
 
 	for _, filter := range filters {
@@ -79,7 +79,7 @@ func matchFilters(hdrSrc TypedHeaderSource, filters []*Filter) int {
 			}
 
 			// check match
-			if !matchFn(header, filter) {
+			if !matchFn(header, &filter) {
 				continue
 			}
 

eacl/validator_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func TestFilterMatch(t *testing.T) {
-	tgt := NewTarget()
+	tgt := *NewTarget()
 	tgt.SetRole(RoleOthers)
 
 	t.Run("simple header match", func(t *testing.T) {
@@ -115,7 +115,7 @@ func TestFilterMatch(t *testing.T) {
 }
 
 func TestOperationMatch(t *testing.T) {
-	tgt := NewTarget()
+	tgt := *NewTarget()
 	tgt.SetRole(RoleOthers)
 
 	t.Run("single operation", func(t *testing.T) {
@@ -161,7 +161,7 @@ func TestTargetMatches(t *testing.T) {
 	tgt2.SetRole(RoleOthers)
 
 	r := NewRecord()
-	r.SetTargets(tgt1, tgt2)
+	r.SetTargets(*tgt1, *tgt2)
 
 	u := newValidationUnit(RoleUser, pubs[0], nil)
 	require.True(t, targetMatches(u, r))
@@ -224,7 +224,7 @@ func (h headers) HeadersOfType(ht FilterHeaderType) ([]Header, bool) {
 	}
 }
 
-func newRecord(a Action, op Operation, tgt ...*Target) *Record {
+func newRecord(a Action, op Operation, tgt ...Target) *Record {
 	r := NewRecord()
 	r.SetAction(a)
 	r.SetOperation(op)