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Load localVersion for all nodes

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This commit is contained in:
Jakob Borg 2014-07-17 11:00:54 +02:00
parent 7943902d73
commit 91cc0cd05e
2 changed files with 41 additions and 6 deletions
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32
files/leveldb.go
View File

@ -103,6 +103,14 @@ func globalKey(repo, file []byte) []byte {
func nodeKeyName(key []byte) []byte {
return key[1+64+32:]
}
func nodeKeyRepo(key []byte) []byte {
repo := key[1 : 1+64]
izero := bytes.IndexByte(repo, 0)
return repo[:izero]
}
func nodeKeyNode(key []byte) []byte {
return key[1+64 : 1+64+32]
}
func globalKeyName(key []byte) []byte {
return key[1+64:]
@ -405,6 +413,30 @@ func ldbWithHave(db *leveldb.DB, repo, node []byte, fn fileIterator) {
}
}
func ldbWithAllRepo(db *leveldb.DB, repo []byte, fn func(node []byte, f protocol.FileInfo) bool) {
start := nodeKey(repo, nil, nil) // before all repo/node files
limit := nodeKey(repo, protocol.LocalNodeID[:], []byte{0xff, 0xff, 0xff, 0xff}) // after all repo/node files
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
dbi := snap.NewIterator(&util.Range{Start: start, Limit: limit}, nil)
defer dbi.Release()
for dbi.Next() {
node := nodeKeyNode(dbi.Key())
var f protocol.FileInfo
err := f.UnmarshalXDR(dbi.Value())
if err != nil {
panic(err)
}
if cont := fn(node, f); !cont {
return
}
}
}
func ldbGet(db *leveldb.DB, repo, node, file []byte) protocol.FileInfo {
nk := nodeKey(repo, node, file)
bs, err := db.Get(nk, nil)

15
files/set.go
View File

@ -34,15 +34,18 @@ func NewSet(repo string, db *leveldb.DB) *Set {
db: db,
}
var lv uint64
ldbWithHave(db, []byte(repo), protocol.LocalNodeID[:], func(f protocol.FileInfo) bool {
if f.LocalVersion > lv {
lv = f.LocalVersion
var nodeID protocol.NodeID
ldbWithAllRepo(db, []byte(repo), func(node []byte, f protocol.FileInfo) bool {
copy(nodeID[:], node)
if f.LocalVersion > s.localVersion[nodeID] {
s.localVersion[nodeID] = f.LocalVersion
}
return true
})
s.localVersion[protocol.LocalNodeID] = lv
clock(lv)
if debug {
l.Debugf("loaded localVersion for %q: %#v", repo, s.localVersion)
}
clock(s.localVersion[protocol.LocalNodeID])
return &s
}