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relation.go
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relation.go
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package av
import (
"os"
"path/filepath"
"sync"
"github.com/88250/gulu"
"github.com/siyuan-note/filelock"
"github.com/siyuan-note/logging"
"github.com/siyuan-note/siyuan/kernel/util"
"github.com/vmihailenco/msgpack/v5"
)
var (
attributeViewRelationsLock = sync.Mutex{}
)
func GetSrcAvIDs(destAvID string) []string {
attributeViewRelationsLock.Lock()
defer attributeViewRelationsLock.Unlock()
relations := filepath.Join(util.DataDir, "storage", "av", "relations.msgpack")
if !filelock.IsExist(relations) {
return nil
}
data, err := filelock.ReadFile(relations)
if nil != err {
logging.LogErrorf("read attribute view relations failed: %s", err)
return nil
}
avRels := map[string][]string{}
if err = msgpack.Unmarshal(data, &avRels); nil != err {
logging.LogErrorf("unmarshal attribute view relations failed: %s", err)
return nil
}
srcAvIDs := avRels[destAvID]
if nil == srcAvIDs {
return nil
}
// 排除自己
srcAvIDs = gulu.Str.RemoveElem(srcAvIDs, destAvID)
return srcAvIDs
}
func RemoveAvRel(srcAvID, destAvID string) {
attributeViewRelationsLock.Lock()
defer attributeViewRelationsLock.Unlock()
relations := filepath.Join(util.DataDir, "storage", "av", "relations.msgpack")
if !filelock.IsExist(relations) {
return
}
data, err := filelock.ReadFile(relations)
if nil != err {
logging.LogErrorf("read attribute view relations failed: %s", err)
return
}
avRels := map[string][]string{}
if err = msgpack.Unmarshal(data, &avRels); nil != err {
logging.LogErrorf("unmarshal attribute view relations failed: %s", err)
return
}
srcAvIDs := avRels[destAvID]
if nil == srcAvIDs {
return
}
var newAvIDs []string
for _, v := range srcAvIDs {
if v != srcAvID {
newAvIDs = append(newAvIDs, v)
}
}
avRels[destAvID] = newAvIDs
data, err = msgpack.Marshal(avRels)
if nil != err {
logging.LogErrorf("marshal attribute view relations failed: %s", err)
return
}
if err = filelock.WriteFile(relations, data); nil != err {
logging.LogErrorf("write attribute view relations failed: %s", err)
return
}
}
func UpsertAvBackRel(srcAvID, destAvID string) {
attributeViewRelationsLock.Lock()
defer attributeViewRelationsLock.Unlock()
avRelations := map[string][]string{}
relations := filepath.Join(util.DataDir, "storage", "av", "relations.msgpack")
if !filelock.IsExist(relations) {
if err := os.MkdirAll(filepath.Dir(relations), 0755); nil != err {
logging.LogErrorf("create attribute view dir failed: %s", err)
return
}
} else {
data, err := filelock.ReadFile(relations)
if nil != err {
logging.LogErrorf("read attribute view relations failed: %s", err)
return
}
if err = msgpack.Unmarshal(data, &avRelations); nil != err {
logging.LogErrorf("unmarshal attribute view relations failed: %s", err)
return
}
}
srcAvIDs := avRelations[destAvID]
srcAvIDs = append(srcAvIDs, srcAvID)
srcAvIDs = gulu.Str.RemoveDuplicatedElem(srcAvIDs)
avRelations[destAvID] = srcAvIDs
data, err := msgpack.Marshal(avRelations)
if nil != err {
logging.LogErrorf("marshal attribute view relations failed: %s", err)
return
}
if err = filelock.WriteFile(relations, data); nil != err {
logging.LogErrorf("write attribute view relations failed: %s", err)
return
}
}