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lib/db: Minor polish (#5469)

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This commit is contained in:
Simon Frei 2019-01-19 20:26:46 +01:00 committed by Jakob Borg
parent f3d735c56a
commit df4d754197
1 changed files with 22 additions and 33 deletions
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55
lib/db/instance.go
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@ -34,24 +34,23 @@ func (db *instance) updateFiles(folder, device []byte, fs []protocol.FileInfo, m
t := db.newReadWriteTransaction()
defer t.close()
var fk []byte
var gk []byte
var dk, gk []byte
devID := protocol.DeviceIDFromBytes(device)
for _, f := range fs {
name := []byte(f.Name)
fk = db.keyer.GenerateDeviceFileKey(fk, folder, device, name)
dk = db.keyer.GenerateDeviceFileKey(dk, folder, device, name)
ef, ok := t.getFileTrunc(fk, true)
ef, ok := t.getFileTrunc(dk, true)
if ok && unchanged(f, ef) {
continue
}
devID := protocol.DeviceIDFromBytes(device)
if ok {
meta.removeFile(devID, ef)
}
meta.addFile(devID, f)
t.insertFile(fk, folder, device, f)
t.insertFile(dk, folder, device, f)
gk = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
t.updateGlobal(gk, folder, device, f, meta)
@ -66,8 +65,7 @@ func (db *instance) addSequences(folder []byte, fs []protocol.FileInfo) {
t := db.newReadWriteTransaction()
defer t.close()
var sk []byte
var dk []byte
var dk, sk []byte
for _, f := range fs {
sk = db.keyer.GenerateSequenceKey(sk, folder, f.Sequence)
dk = db.keyer.GenerateDeviceFileKey(dk, folder, protocol.LocalDeviceID[:], []byte(f.Name))
@ -159,7 +157,6 @@ func (db *instance) withAllFolderTruncated(folder []byte, fn func(device []byte,
defer dbi.Release()
var gk []byte
for dbi.Next() {
device, ok := db.keyer.DeviceFromDeviceFileKey(dbi.Key())
if !ok {
@ -230,7 +227,7 @@ func (db *instance) withGlobal(folder, prefix []byte, truncate bool, fn Iterator
dbi := t.NewIterator(util.BytesPrefix(db.keyer.GenerateGlobalVersionKey(nil, folder, prefix)), nil)
defer dbi.Release()
var fk []byte
var dk []byte
for dbi.Next() {
name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
if len(prefix) > 0 && !bytes.HasPrefix(name, prefix) {
@ -242,9 +239,9 @@ func (db *instance) withGlobal(folder, prefix []byte, truncate bool, fn Iterator
continue
}
fk = db.keyer.GenerateDeviceFileKey(fk, folder, vl.Versions[0].Device, name)
dk = db.keyer.GenerateDeviceFileKey(dk, folder, vl.Versions[0].Device, name)
f, ok := t.getFileTrunc(fk, truncate)
f, ok := t.getFileTrunc(dk, truncate)
if !ok {
continue
}
@ -298,7 +295,8 @@ func (db *instance) withNeed(folder, device []byte, truncate bool, fn Iterator)
dbi := t.NewIterator(util.BytesPrefix(db.keyer.GenerateGlobalVersionKey(nil, folder, nil).WithoutName()), nil)
defer dbi.Release()
var fk []byte
var dk []byte
devID := protocol.DeviceIDFromBytes(device)
for dbi.Next() {
vl, ok := unmarshalVersionList(dbi.Value())
if !ok {
@ -328,8 +326,8 @@ func (db *instance) withNeed(folder, device []byte, truncate bool, fn Iterator)
continue
}
fk = db.keyer.GenerateDeviceFileKey(fk, folder, vl.Versions[i].Device, name)
bs, err := t.Get(fk, nil)
dk = db.keyer.GenerateDeviceFileKey(dk, folder, vl.Versions[i].Device, name)
bs, err := t.Get(dk, nil)
if err != nil {
l.Debugln("surprise error:", err)
continue
@ -346,7 +344,7 @@ func (db *instance) withNeed(folder, device []byte, truncate bool, fn Iterator)
break
}
l.Debugf("need folder=%q device=%v name=%q have=%v invalid=%v haveV=%v globalV=%v globalDev=%v", folder, protocol.DeviceIDFromBytes(device), name, have, haveFV.Invalid, haveFV.Version, needVersion, needDevice)
l.Debugf("need folder=%q device=%v name=%q have=%v invalid=%v haveV=%v globalV=%v globalDev=%v", folder, devID, name, have, haveFV.Invalid, haveFV.Version, needVersion, needDevice)
if !fn(gf) {
return
@ -365,8 +363,7 @@ func (db *instance) withNeedLocal(folder []byte, truncate bool, fn Iterator) {
dbi := t.NewIterator(util.BytesPrefix(db.keyer.GenerateNeedFileKey(nil, folder, nil).WithoutName()), nil)
defer dbi.Release()
var dk []byte
var gk []byte
var gk, dk []byte
var f FileIntf
var ok bool
for dbi.Next() {
@ -406,7 +403,6 @@ func (db *instance) dropDeviceFolder(device, folder []byte, meta *metadataTracke
defer dbi.Release()
var gk []byte
for dbi.Next() {
key := dbi.Key()
name := db.keyer.NameFromDeviceFileKey(key)
@ -424,7 +420,7 @@ func (db *instance) checkGlobals(folder []byte, meta *metadataTracker) {
dbi := t.NewIterator(util.BytesPrefix(db.keyer.GenerateGlobalVersionKey(nil, folder, nil).WithoutName()), nil)
defer dbi.Release()
var fk []byte
var dk []byte
for dbi.Next() {
vl, ok := unmarshalVersionList(dbi.Value())
if !ok {
@ -439,8 +435,8 @@ func (db *instance) checkGlobals(folder []byte, meta *metadataTracker) {
name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
var newVL VersionList
for i, version := range vl.Versions {
fk = db.keyer.GenerateDeviceFileKey(fk, folder, version.Device, name)
_, err := t.Get(fk, nil)
dk = db.keyer.GenerateDeviceFileKey(dk, folder, version.Device, name)
_, err := t.Get(dk, nil)
if err == leveldb.ErrNotFound {
continue
}
@ -451,7 +447,7 @@ func (db *instance) checkGlobals(folder []byte, meta *metadataTracker) {
newVL.Versions = append(newVL.Versions, version)
if i == 0 {
if fi, ok := t.getFileByKey(fk); ok {
if fi, ok := t.getFileByKey(dk); ok {
meta.addFile(protocol.GlobalDeviceID, fi)
}
}
@ -466,8 +462,7 @@ func (db *instance) checkGlobals(folder []byte, meta *metadataTracker) {
}
func (db *instance) getIndexID(device, folder []byte) protocol.IndexID {
key := db.keyer.GenerateIndexIDKey(nil, device, folder)
cur, err := db.Get(key, nil)
cur, err := db.Get(db.keyer.GenerateIndexIDKey(nil, device, folder), nil)
if err != nil {
return 0
}
@ -481,9 +476,8 @@ func (db *instance) getIndexID(device, folder []byte) protocol.IndexID {
}
func (db *instance) setIndexID(device, folder []byte, id protocol.IndexID) {
key := db.keyer.GenerateIndexIDKey(nil, device, folder)
bs, _ := id.Marshal() // marshalling can't fail
if err := db.Put(key, bs, nil); err != nil {
if err := db.Put(db.keyer.GenerateIndexIDKey(nil, device, folder), bs, nil); err != nil {
panic("storing index ID: " + err.Error())
}
}
@ -500,12 +494,7 @@ func (db *instance) dropPrefix(prefix []byte) {
t := db.newReadWriteTransaction()
defer t.close()
dbi := t.NewIterator(util.BytesPrefix(prefix), nil)
defer dbi.Release()
for dbi.Next() {
t.Delete(dbi.Key())
}
t.deleteKeyPrefix(prefix)
}
func unmarshalTrunc(bs []byte, truncate bool) (FileIntf, error) {