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share_persistence.go
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/
share_persistence.go
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package neo
import (
"github.com/freecloudio/server/application/config"
"github.com/freecloudio/server/application/persistence"
"github.com/freecloudio/server/domain/models"
"github.com/freecloudio/server/domain/models/fcerror"
"github.com/freecloudio/server/utils"
"github.com/neo4j/neo4j-go-driver/neo4j"
)
type SharePersistence struct {
logger utils.Logger
}
func init() {
labelModelMappings = append(labelModelMappings, &labelModelMapping{label: "CONTAINS_SHARED", model: &containsRelation{}})
labelModelMappings = append(labelModelMappings, &labelModelMapping{label: "CONTAINS_SHARED", model: &models.Share{}})
}
func CreateSharePersistence(cfg config.Config) (sharePersistence *SharePersistence, fcerr *fcerror.Error) {
if neo == nil {
fcerr = initializeNeo(cfg)
if fcerr != nil {
return
}
}
sharePersistence = &SharePersistence{logger: utils.CreateLogger(cfg.GetLoggingConfig())}
return
}
func (*SharePersistence) Close() *fcerror.Error {
if neo != nil {
return closeNeo()
}
return nil
}
func (p *SharePersistence) StartReadTransaction() (tx persistence.SharePersistenceReadTransaction, fcerr *fcerror.Error) {
txCtx, fcerr := newTransactionContext(neo4j.AccessModeRead, p.logger)
if fcerr != nil {
p.logger.WithError(fcerr).Error("Failed to create neo read transaction")
return
}
return &shareReadTransaction{txCtx}, nil
}
func (p *SharePersistence) StartReadWriteTransaction() (tx persistence.SharePersistenceReadWriteTransaction, fcerr *fcerror.Error) {
txCtx, fcerr := newTransactionContext(neo4j.AccessModeWrite, p.logger)
if fcerr != nil {
p.logger.WithError(fcerr).Error("Failed to create neo write transaction")
return
}
return &shareReadWriteTransaction{shareReadTransaction{txCtx}}, nil
}
type shareReadTransaction struct {
*transactionCtx
}
func (tx *shareReadTransaction) NodeContainsNestedShares(nodeID models.NodeID) (containsShared bool, fcerr *fcerror.Error) {
res, err := tx.neoTx.Run(`
MATCH p = (:Node {id: $node_id})-[:CONTAINS|CONTAINS_SHARED*]->(n:Node)
WITH reduce(x = false, t IN relationships(p) | TYPE(t) = "CONTAINS_SHARED") AS contains_shared
WHERE contains_shared = true
RETURN contains_shared
`,
map[string]interface{}{
"node_id": nodeID,
})
if err != nil {
fcerr = neoToFcError(err, fcerror.ErrNodeNotFound, fcerror.ErrDBReadFailed)
return
}
if res.Next() {
containsShared = true
}
return
}
type shareReadWriteTransaction struct {
shareReadTransaction
}
func (tx *shareReadWriteTransaction) CreateShare(userID models.UserID, share *models.Share, insertName string) (created bool, fcerr *fcerror.Error) {
res, err := tx.neoTx.Run(`
MATCH (u:User {id: $user_id})-[:HAS_ROOT_FOLDER]->(f:Node:Folder), (n:Node {id: $node_id})
MERGE (f)-[r:CONTAINS_SHARED {name: $node_name}]->(n)
ON CREATE
SET r += $share
`,
map[string]interface{}{
"user_id": share.SharedWithID,
"node_name": insertName,
"node_id": share.NodeID,
"share": modelToMap(share),
})
if err != nil {
fcerr = neoToFcError(err, fcerror.ErrUnknown, fcerror.ErrDBWriteFailed)
return
}
summary, err := res.Summary()
if err == nil && summary.Counters().RelationshipsCreated() > 0 {
created = true
}
fcerr = neoToFcError(err, fcerror.ErrUnknown, fcerror.ErrDBWriteFailed)
return
}