/
dataWriter.go
284 lines (252 loc) · 8.86 KB
/
dataWriter.go
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package memory
import (
"context"
"errors"
"time"
"github.com/hashicorp/go-memdb"
"github.com/Permify/permify/internal/storage"
"github.com/Permify/permify/internal/storage/memory/constants"
"github.com/Permify/permify/internal/storage/memory/snapshot"
"github.com/Permify/permify/internal/storage/memory/utils"
"github.com/Permify/permify/internal/validation"
"github.com/Permify/permify/pkg/bundle"
"github.com/Permify/permify/pkg/database"
db "github.com/Permify/permify/pkg/database/memory"
base "github.com/Permify/permify/pkg/pb/base/v1"
"github.com/Permify/permify/pkg/token"
"github.com/Permify/permify/pkg/tuple"
)
type DataWriter struct {
database *db.Memory
}
// NewDataWriter - Create a new DataWriter
func NewDataWriter(database *db.Memory) *DataWriter {
return &DataWriter{
database: database,
}
}
// WriteRelationships - Write a Relation to repository
func (w *DataWriter) Write(_ context.Context, tenantID string, tupleCollection *database.TupleCollection, attributesCollection *database.AttributeCollection) (token.EncodedSnapToken, error) {
var err error
tupleIterator := tupleCollection.CreateTupleIterator()
attributeIterator := attributesCollection.CreateAttributeIterator()
if !tupleIterator.HasNext() && !attributeIterator.HasNext() {
return token.NewNoopToken().Encode(), nil
}
txn := w.database.DB.Txn(true)
defer txn.Abort()
for tupleIterator.HasNext() {
bt := tupleIterator.GetNext()
srelation := bt.GetSubject().GetRelation()
if srelation == tuple.ELLIPSIS {
srelation = ""
}
if err = txn.Insert(constants.RelationTuplesTable, storage.RelationTuple{
ID: utils.RelationTuplesID.ID(),
TenantID: tenantID,
EntityType: bt.GetEntity().GetType(),
EntityID: bt.GetEntity().GetId(),
Relation: bt.GetRelation(),
SubjectType: bt.GetSubject().GetType(),
SubjectID: bt.GetSubject().GetId(),
SubjectRelation: srelation,
}); err != nil {
return nil, errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
}
for attributeIterator.HasNext() {
at := attributeIterator.GetNext()
if err = txn.Insert(constants.AttributesTable, storage.Attribute{
ID: utils.AttributesID.ID(),
TenantID: tenantID,
EntityType: at.GetEntity().GetType(),
EntityID: at.GetEntity().GetId(),
Attribute: at.GetAttribute(),
Value: at.GetValue(),
}); err != nil {
return nil, errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
}
txn.Commit()
return snapshot.NewToken(time.Now()).Encode(), nil
}
// Delete - Delete relationship from repository
func (w *DataWriter) Delete(_ context.Context, tenantID string, tupleFilter *base.TupleFilter, attributeFilter *base.AttributeFilter) (token.EncodedSnapToken, error) {
var err error
txn := w.database.DB.Txn(true)
defer txn.Abort()
if !validation.IsTupleFilterEmpty(tupleFilter) {
tIndex, tArgs := utils.GetRelationTuplesIndexNameAndArgsByFilters(tenantID, tupleFilter)
var tit memdb.ResultIterator
tit, err = txn.Get(constants.RelationTuplesTable, tIndex, tArgs...)
if err != nil {
return nil, errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
tFit := memdb.NewFilterIterator(tit, utils.FilterRelationTuplesQuery(tenantID, tupleFilter))
for obj := tFit.Next(); obj != nil; obj = tFit.Next() {
t, ok := obj.(storage.RelationTuple)
if !ok {
return nil, errors.New(base.ErrorCode_ERROR_CODE_TYPE_CONVERSATION.String())
}
err = txn.Delete(constants.RelationTuplesTable, t)
if err != nil {
return nil, errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
}
}
if !validation.IsAttributeFilterEmpty(attributeFilter) {
aIndex, args := utils.GetAttributesIndexNameAndArgsByFilters(tenantID, attributeFilter)
var aIt memdb.ResultIterator
aIt, err = txn.Get(constants.AttributesTable, aIndex, args...)
if err != nil {
return nil, errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
fit := memdb.NewFilterIterator(aIt, utils.FilterAttributesQuery(tenantID, attributeFilter))
for obj := fit.Next(); obj != nil; obj = fit.Next() {
t, ok := obj.(storage.Attribute)
if !ok {
return nil, errors.New(base.ErrorCode_ERROR_CODE_TYPE_CONVERSATION.String())
}
err = txn.Delete(constants.AttributesTable, t)
if err != nil {
return nil, errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
}
}
txn.Commit()
return snapshot.NewToken(time.Now()).Encode(), nil
}
// RunBundle executes a bundle of operations in the context of a given tenant.
// It returns an EncodedSnapToken upon successful completion or an error if the operation fails.
func (w *DataWriter) RunBundle(
ctx context.Context,
tenantID string,
arguments map[string]string,
b *base.DataBundle,
) (token.EncodedSnapToken, error) {
txn := w.database.DB.Txn(true)
defer txn.Abort()
for _, op := range b.GetOperations() {
tb, ab, err := bundle.Operation(arguments, op)
if err != nil {
return nil, err
}
err = w.runOperation(ctx, txn, tenantID, tb, ab)
if err != nil {
return nil, err
}
}
// Commit the final transaction
txn.Commit()
return snapshot.NewToken(time.Now()).Encode(), nil
}
// runOperation processes and executes database operations defined in TupleBundle and AttributeBundle within a given transaction.
func (w *DataWriter) runOperation(
ctx context.Context,
txn *memdb.Txn,
tenantID string,
tb database.TupleBundle,
ab database.AttributeBundle,
) (err error) {
if len(tb.Write.GetTuples()) > 0 {
for titer := tb.Write.CreateTupleIterator(); titer.HasNext(); {
t := titer.GetNext()
srelation := t.GetSubject().GetRelation()
if srelation == tuple.ELLIPSIS {
srelation = ""
}
// Insert the tuple into the RelationTuplesTable
if err := txn.Insert(constants.RelationTuplesTable, storage.RelationTuple{
ID: utils.RelationTuplesID.ID(),
EntityID: t.GetEntity().GetId(),
EntityType: t.GetEntity().GetType(),
Relation: t.GetRelation(),
SubjectID: t.GetSubject().GetId(),
SubjectType: t.GetSubject().GetType(),
SubjectRelation: srelation,
TenantID: tenantID,
}); err != nil {
return err
}
}
}
if len(ab.Write.GetAttributes()) > 0 {
for aiter := ab.Write.CreateAttributeIterator(); aiter.HasNext(); {
a := aiter.GetNext()
if err := txn.Insert(constants.AttributesTable, storage.Attribute{
ID: utils.AttributesID.ID(),
EntityID: a.GetEntity().GetId(),
EntityType: a.GetEntity().GetType(),
Attribute: a.GetAttribute(),
Value: a.GetValue(),
TenantID: tenantID,
}); err != nil {
return err
}
}
}
if len(tb.Delete.GetTuples()) > 0 {
for titer := tb.Delete.CreateTupleIterator(); titer.HasNext(); {
next := titer.GetNext()
tupleFilter := &base.TupleFilter{
Entity: &base.EntityFilter{
Type: next.GetEntity().GetType(),
Ids: []string{next.GetEntity().GetId()},
},
Relation: next.GetRelation(),
Subject: &base.SubjectFilter{
Type: next.GetSubject().GetType(),
Ids: []string{next.GetSubject().GetId()},
Relation: next.GetSubject().GetRelation(),
},
}
tIndex, tArgs := utils.GetRelationTuplesIndexNameAndArgsByFilters(tenantID, tupleFilter)
var tit memdb.ResultIterator
tit, err = txn.Get(constants.RelationTuplesTable, tIndex, tArgs...)
if err != nil {
return errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
tFit := memdb.NewFilterIterator(tit, utils.FilterRelationTuplesQuery(tenantID, tupleFilter))
for obj := tFit.Next(); obj != nil; obj = tFit.Next() {
t, ok := obj.(storage.RelationTuple)
if !ok {
return errors.New(base.ErrorCode_ERROR_CODE_TYPE_CONVERSATION.String())
}
err = txn.Delete(constants.RelationTuplesTable, t)
if err != nil {
return errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
}
}
}
if len(ab.Delete.GetAttributes()) > 0 {
for aiter := ab.Delete.CreateAttributeIterator(); aiter.HasNext(); {
next := aiter.GetNext()
attributeFilter := &base.AttributeFilter{
Entity: &base.EntityFilter{
Type: next.GetEntity().GetType(),
Ids: []string{next.GetEntity().GetId()},
},
Attributes: []string{next.GetAttribute()},
}
aIndex, args := utils.GetAttributesIndexNameAndArgsByFilters(tenantID, attributeFilter)
var aIt memdb.ResultIterator
aIt, err = txn.Get(constants.AttributesTable, aIndex, args...)
if err != nil {
return errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
fit := memdb.NewFilterIterator(aIt, utils.FilterAttributesQuery(tenantID, attributeFilter))
for obj := fit.Next(); obj != nil; obj = fit.Next() {
t, ok := obj.(storage.Attribute)
if !ok {
return errors.New(base.ErrorCode_ERROR_CODE_TYPE_CONVERSATION.String())
}
err = txn.Delete(constants.AttributesTable, t)
if err != nil {
return errors.New(base.ErrorCode_ERROR_CODE_EXECUTION.String())
}
}
}
}
return nil
}