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tool: dump tool supports index

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This commit is contained in:
Xiang Li 2015-02-17 21:01:06 -08:00
parent 7c65857283
commit d6f8a30f7c
1 changed files with 32 additions and 20 deletions
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52
tools/etcd-dump-logs/main.go
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@ -32,35 +32,47 @@ import (
func main() { func main() {
from := flag.String("data-dir", "", "") from := flag.String("data-dir", "", "")
snapfile := flag.String("snap-file", "", "The base name of snapshot file to read") snapfile := flag.String("start-snap", "", "The base name of snapshot file to start dumping")
index := flag.Uint64("start-index", 0, "The index to start dumping")
flag.Parse() flag.Parse()
if *from == "" { if *from == "" {
log.Fatal("Must provide -data-dir flag") log.Fatal("Must provide -data-dir flag.")
}
if *snapfile != "" && *index != 0 {
log.Fatal("start-snap and start-index flags cannot be used together.")
} }
var ( var (
walsnap walpb.Snapshot
snapshot *raftpb.Snapshot snapshot *raftpb.Snapshot
err error err error
) )
if *snapfile == "" { isIndex := *index != 0
ss := snap.New(snapDir(*from))
snapshot, err = ss.Load()
} else {
snapshot, err = snap.Read(path.Join(snapDir(*from), *snapfile))
}
var walsnap walpb.Snapshot if isIndex {
switch err { fmt.Printf("Start dumping log entries from index %d.\n", *index)
case nil: walsnap.Index = *index
walsnap.Index, walsnap.Term = snapshot.Metadata.Index, snapshot.Metadata.Term } else {
nodes := genIDSlice(snapshot.Metadata.ConfState.Nodes) if *snapfile == "" {
fmt.Printf("Snapshot:\nterm=%d index=%d nodes=%s\n", ss := snap.New(snapDir(*from))
walsnap.Term, walsnap.Index, nodes) snapshot, err = ss.Load()
case snap.ErrNoSnapshot: } else {
fmt.Printf("Snapshot:\nempty\n") snapshot, err = snap.Read(path.Join(snapDir(*from), *snapfile))
default: }
log.Fatalf("Failed loading snapshot: %v", err)
switch err {
case nil:
walsnap.Index, walsnap.Term = snapshot.Metadata.Index, snapshot.Metadata.Term
nodes := genIDSlice(snapshot.Metadata.ConfState.Nodes)
fmt.Printf("Snapshot:\nterm=%d index=%d nodes=%s\n",
walsnap.Term, walsnap.Index, nodes)
case snap.ErrNoSnapshot:
fmt.Printf("Snapshot:\nempty\n")
default:
log.Fatalf("Failed loading snapshot: %v", err)
}
fmt.Println("Start dupmping log entries from snapshot.")
} }
w, err := wal.Open(walDir(*from), walsnap) w, err := wal.Open(walDir(*from), walsnap)
@ -69,7 +81,7 @@ func main() {
} }
wmetadata, state, ents, err := w.ReadAll() wmetadata, state, ents, err := w.ReadAll()
w.Close() w.Close()
if err != nil { if err != nil && (!isIndex || err != wal.ErrSnapshotNotFound) {
log.Fatalf("Failed reading WAL: %v", err) log.Fatalf("Failed reading WAL: %v", err)
} }
id, cid := parseWALMetadata(wmetadata) id, cid := parseWALMetadata(wmetadata)