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sql-lostfound.go
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sql-lostfound.go
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package index
import (
sql2 "database/sql"
"fmt"
"strings"
"github.com/pydio/cells/common/sql"
)
func init() {
queries["deleteNodeUuid"] = func(dao sql.DAO, args ...string) string {
return `delete from %%PREFIX%%_idx_tree where uuid = ?`
}
queries["findDuplicates"] = func(dao sql.DAO, args ...string) string {
cc := dao.Concat("mpath1", "mpath2", "mpath3", "mpath4")
return fmt.Sprintf(`
select
concat(name, "_") safename,
SUBSTRING_INDEX(` + cc + `,'.',level - 1) as pmpath,
min(` + cc + `)
from
%%PREFIX%%_idx_tree
group by safename, pmpath
having count(pmpath) > 1`)
}
queries["findLostChildren"] = func(dao sql.DAO, args ...string) string {
//cc1 := dao.Concat("t1.mpath1", "t1.mpath2", "t1.mpath3", "t1.mpath4")
//cc2 := dao.Concat("t2.mpath1", "t2.mpath2", "t2.mpath3", "t2.mpath4")
return fmt.Sprintf(`
select
t1.uuid,
t1.name,
t1.leaf,
t1.mpath1
from
%%PREFIX%%_idx_tree t1
where
t1.level > 1
and
t1.mpath2 = ''
and
NOT EXISTS (SELECT 1 FROM %%PREFIX%%_idx_tree t2 WHERE t2.mpath1=SUBSTRING_INDEX(t1.mpath1,'.',t1.level - 1))
`)
}
queries["findDuplicatesForMPath"] = func(dao sql.DAO, args ...string) string {
cc := dao.Concat("mpath1", "mpath2", "mpath3", "mpath4")
return fmt.Sprintf(`
select
uuid,
name,
leaf,
` + cc + `
from
%%PREFIX%%_idx_tree
where
name = ?
and SUBSTRING_INDEX(` + cc + `, '.', level - 1) = ?
order by char_length(` + cc + `), ` + cc + `
`)
}
queries["fixRandHash2"] = func(dao sql.DAO, args ...string) string {
hash2 := dao.HashParent("name", "mpath1", "mpath2", "mpath3", "mpath4")
return `
update
%%PREFIX%%_idx_tree
set
hash2 = ` + hash2 + `
where
hash2 like 'random-%'
`
}
queries["fixRandHash2WithExcludes"] = func(dao sql.DAO, args ...string) string {
hash2 := dao.HashParent("name", "mpath1", "mpath2", "mpath3", "mpath4")
var marks []string
for range args {
marks = append(marks, "?")
}
return `
update
%%PREFIX%%_idx_tree
set
hash2 = ` + hash2 + `
where
hash2 like 'random-%'
and
uuid not in (` + strings.Join(marks, ", ") + `)
`
}
}
type lostFoundImpl struct {
uuids []string
lostMPath string
leaf bool
}
func (l *lostFoundImpl) String() string {
if l.IsDuplicate() {
return "Duplicates : " + strings.Join(l.uuids, ", ")
} else {
return "Lost parent for node : " + l.uuids[0] + "(" + l.lostMPath + ")"
}
}
func (l *lostFoundImpl) IsDir() bool {
return l.leaf
}
func (l *lostFoundImpl) IsDuplicate() bool {
return len(l.lostMPath) == 0
}
func (l *lostFoundImpl) IsLostParent() bool {
return len(l.lostMPath) > 0
}
func (l *lostFoundImpl) GetUUIDs() []string {
return l.uuids
}
func (l *lostFoundImpl) MarkForDeletion(uuids []string) {
l.uuids = uuids
}
func (dao *IndexSQL) LostAndFounds() (output []LostAndFound, err error) {
dao.Lock()
defer dao.Unlock()
stmt, er := dao.GetStmt("findDuplicates")
if er != nil {
return nil, er
}
rows, er := stmt.Query()
if er != nil {
return nil, er
}
defer rows.Close()
type duplicate struct {
name string
pmpath string
}
var duplicates []duplicate
for rows.Next() {
var safename, pmpath, mpath string
if err := rows.Scan(&safename, &pmpath, &mpath); err != nil {
return nil, err
}
duplicates = append(duplicates, duplicate{strings.TrimSuffix(safename, "_"), pmpath})
}
for _, t := range duplicates {
stmt, err := dao.GetStmt("findDuplicatesForMPath")
if err != nil {
return nil, err
}
rows, err := stmt.Query(t.name, t.pmpath)
if err != nil {
return nil, err
}
lf := &lostFoundImpl{}
for rows.Next() {
var uid, name, mpath string
var leaf bool
if err := rows.Scan(&uid, &name, &leaf, &mpath); err != nil {
rows.Close()
return nil, err
}
lf.leaf = leaf
lf.uuids = append(lf.uuids, uid)
}
rows.Close()
output = append(output, lf)
}
{
stmt2, er2 := dao.GetStmt("findLostChildren")
if er2 != nil {
return nil, er2
}
rows2, er2 := stmt2.Query()
if er2 != nil {
return nil, er2
}
defer rows2.Close()
for rows2.Next() {
var uid, name, mpath string
var leaf bool
if err := rows2.Scan(&uid, &name, &leaf, &mpath); err != nil {
rows2.Close()
return nil, err
}
output = append(output, &lostFoundImpl{
uuids: []string{uid},
leaf: leaf,
lostMPath: mpath,
})
// Load all children as well
if !leaf {
t, _ := dao.GetNodeByUUID(uid)
for c := range dao.GetNodeTree(t.MPath) {
output = append(output, &lostFoundImpl{uuids: []string{c.Uuid}, lostMPath: c.MPath.String()})
}
}
}
}
return
}
// FixLostAndFound receives LostAndFound that are ready for deletion
func (dao *IndexSQL) FixLostAndFound(lost LostAndFound) error {
dao.Lock()
defer dao.Unlock()
s, e := dao.GetStmt("deleteNodeUuid")
if e != nil {
return e
}
for _, id := range lost.GetUUIDs() {
if _, e := s.Exec(id); e != nil {
return e
}
}
return nil
}
// FixRandHash2 looks up for hash2 in the form 'random-%' and recompute them
// as proper has of parents + name
func (dao *IndexSQL) FixRandHash2(excludes ...LostAndFound) (int64, error) {
dao.Lock()
defer dao.Unlock()
var xUuid []interface{}
for _, l := range excludes {
for _, uid := range l.GetUUIDs() {
xUuid = append(xUuid, uid)
}
}
var s *sql2.Stmt
var e error
if len(xUuid) > 0 {
s, e = dao.GetStmt("fixRandHash2WithExcludes", xUuid...)
} else {
s, e = dao.GetStmt("fixRandHash2")
}
if e != nil {
return 0, e
}
var r sql2.Result
if len(xUuid) > 0 {
r, e = s.Exec(xUuid...)
} else {
r, e = s.Exec()
}
var affected int64
if e == nil {
if a, e2 := r.RowsAffected(); e2 == nil {
affected = a
}
} else if strings.Contains(e.Error(), "duplicate") { // Replace duplicate by dup, to avoid auto-retry
return 0, fmt.Errorf(strings.ReplaceAll(e.Error(), "duplicate", "dup"))
}
return affected, e
}