etcdserver: rename "snap" to "raftsnap" package

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

etcdserver/backend.go

@@ -23,7 +23,7 @@ import (
 	"github.com/coreos/etcd/mvcc"
 	"github.com/coreos/etcd/mvcc/backend"
 	"github.com/coreos/etcd/raft/raftpb"
-	"github.com/coreos/etcd/snap"
+	"github.com/coreos/etcd/raftsnap"
 )
 
 func newBackend(cfg ServerConfig) backend.Backend {
@@ -37,7 +37,7 @@ func newBackend(cfg ServerConfig) backend.Backend {
 }
 
 // openSnapshotBackend renames a snapshot db to the current etcd db and opens it.
-func openSnapshotBackend(cfg ServerConfig, ss *snap.Snapshotter, snapshot raftpb.Snapshot) (backend.Backend, error) {
+func openSnapshotBackend(cfg ServerConfig, ss *raftsnap.Snapshotter, snapshot raftpb.Snapshot) (backend.Backend, error) {
 	snapPath, err := ss.DBFilePath(snapshot.Metadata.Index)
 	if err != nil {
 		return nil, fmt.Errorf("database snapshot file path error: %v", err)
@@ -77,5 +77,5 @@ func recoverSnapshotBackend(cfg ServerConfig, oldbe backend.Backend, snapshot ra
 		return oldbe, nil
 	}
 	oldbe.Close()
-	return openSnapshotBackend(cfg, snap.New(cfg.SnapDir()), snapshot)
+	return openSnapshotBackend(cfg, raftsnap.New(cfg.SnapDir()), snapshot)
 }

etcdserver/server.go

@@ -52,7 +52,7 @@ import (
 	"github.com/coreos/etcd/raft"
 	"github.com/coreos/etcd/raft/raftpb"
 	"github.com/coreos/etcd/rafthttp"
-	"github.com/coreos/etcd/snap"
+	"github.com/coreos/etcd/raftsnap"
 	"github.com/coreos/etcd/store"
 	"github.com/coreos/etcd/version"
 	"github.com/coreos/etcd/wal"
@@ -206,7 +206,7 @@ type EtcdServer struct {
 	cluster *membership.RaftCluster
 
 	store       store.Store
-	snapshotter *snap.Snapshotter
+	snapshotter *raftsnap.Snapshotter
 
 	applyV2 ApplierV2
 
@@ -279,7 +279,7 @@ func NewServer(cfg ServerConfig) (srv *EtcdServer, err error) {
 	if err = fileutil.TouchDirAll(cfg.SnapDir()); err != nil {
 		plog.Fatalf("create snapshot directory error: %v", err)
 	}
-	ss := snap.New(cfg.SnapDir())
+	ss := raftsnap.New(cfg.SnapDir())
 
 	bepath := cfg.backendPath()
 	beExist := fileutil.Exist(bepath)
@@ -373,7 +373,7 @@ func NewServer(cfg ServerConfig) (srv *EtcdServer, err error) {
 			plog.Warningf("discovery token ignored since a cluster has already been initialized. Valid log found at %q", cfg.WALDir())
 		}
 		snapshot, err = ss.Load()
-		if err != nil && err != snap.ErrNoSnapshot {
+		if err != nil && err != raftsnap.ErrNoSnapshot {
 			return nil, err
 		}
 		if snapshot != nil {
@@ -1266,7 +1266,7 @@ func (s *EtcdServer) publish(timeout time.Duration) {
 	}
 }
 
-func (s *EtcdServer) sendMergedSnap(merged snap.Message) {
+func (s *EtcdServer) sendMergedSnap(merged raftsnap.Message) {
 	atomic.AddInt64(&s.inflightSnapshots, 1)
 
 	s.r.transport.SendSnapshot(merged)

etcdserver/server_test.go

@@ -43,7 +43,7 @@ import (
 	"github.com/coreos/etcd/raft"
 	"github.com/coreos/etcd/raft/raftpb"
 	"github.com/coreos/etcd/rafthttp"
-	"github.com/coreos/etcd/snap"
+	"github.com/coreos/etcd/raftsnap"
 	"github.com/coreos/etcd/store"
 )
 
@@ -986,7 +986,7 @@ func TestSnapshotOrdering(t *testing.T) {
 		Cfg:         ServerConfig{DataDir: testdir},
 		r:           *r,
 		store:       st,
-		snapshotter: snap.New(snapdir),
+		snapshotter: raftsnap.New(snapdir),
 		cluster:     cl,
 		SyncTicker:  &time.Ticker{},
 	}
@@ -1111,7 +1111,7 @@ func TestConcurrentApplyAndSnapshotV3(t *testing.T) {
 		Cfg:         ServerConfig{DataDir: testdir},
 		r:           *r,
 		store:       st,
-		snapshotter: snap.New(testdir),
+		snapshotter: raftsnap.New(testdir),
 		cluster:     cl,
 		SyncTicker:  &time.Ticker{},
 	}

etcdserver/snapshot_merge.go

@@ -19,13 +19,13 @@ import (
 
 	"github.com/coreos/etcd/mvcc/backend"
 	"github.com/coreos/etcd/raft/raftpb"
-	"github.com/coreos/etcd/snap"
+	"github.com/coreos/etcd/raftsnap"
 )
 
 // createMergedSnapshotMessage creates a snapshot message that contains: raft status (term, conf),
 // a snapshot of v2 store inside raft.Snapshot as []byte, a snapshot of v3 KV in the top level message
 // as ReadCloser.
-func (s *EtcdServer) createMergedSnapshotMessage(m raftpb.Message, snapt, snapi uint64, confState raftpb.ConfState) snap.Message {
+func (s *EtcdServer) createMergedSnapshotMessage(m raftpb.Message, snapt, snapi uint64, confState raftpb.ConfState) raftsnap.Message {
 	// get a snapshot of v2 store as []byte
 	clone := s.store.Clone()
 	d, err := clone.SaveNoCopy()
@@ -51,7 +51,7 @@ func (s *EtcdServer) createMergedSnapshotMessage(m raftpb.Message, snapt, snapi
 	}
 	m.Snapshot = snapshot
 
-	return *snap.NewMessage(m, rc, dbsnap.Size())
+	return *raftsnap.NewMessage(m, rc, dbsnap.Size())
 }
 
 func newSnapshotReaderCloser(snapshot backend.Snapshot) io.ReadCloser {

etcdserver/storage.go

@@ -21,7 +21,7 @@ import (
 	"github.com/coreos/etcd/pkg/pbutil"
 	"github.com/coreos/etcd/pkg/types"
 	"github.com/coreos/etcd/raft/raftpb"
-	"github.com/coreos/etcd/snap"
+	"github.com/coreos/etcd/raftsnap"
 	"github.com/coreos/etcd/wal"
 	"github.com/coreos/etcd/wal/walpb"
 )
@@ -38,10 +38,10 @@ type Storage interface {
 
 type storage struct {
 	*wal.WAL
-	*snap.Snapshotter
+	*raftsnap.Snapshotter
 }
 
-func NewStorage(w *wal.WAL, s *snap.Snapshotter) Storage {
+func NewStorage(w *wal.WAL, s *raftsnap.Snapshotter) Storage {
 	return &storage{w, s}
 }
 

etcdserver/util_test.go

@@ -23,7 +23,7 @@ import (
 	"github.com/coreos/etcd/pkg/types"
 	"github.com/coreos/etcd/raft/raftpb"
 	"github.com/coreos/etcd/rafthttp"
-	"github.com/coreos/etcd/snap"
+	"github.com/coreos/etcd/raftsnap"
 )
 
 func TestLongestConnected(t *testing.T) {
@@ -76,7 +76,7 @@ func newNopTransporterWithActiveTime(memberIDs []types.ID) rafthttp.Transporter
 func (s *nopTransporterWithActiveTime) Start() error                        { return nil }
 func (s *nopTransporterWithActiveTime) Handler() http.Handler               { return nil }
 func (s *nopTransporterWithActiveTime) Send(m []raftpb.Message)             {}
-func (s *nopTransporterWithActiveTime) SendSnapshot(m snap.Message)         {}
+func (s *nopTransporterWithActiveTime) SendSnapshot(m raftsnap.Message)     {}
 func (s *nopTransporterWithActiveTime) AddRemote(id types.ID, us []string)  {}
 func (s *nopTransporterWithActiveTime) AddPeer(id types.ID, us []string)    {}
 func (s *nopTransporterWithActiveTime) RemovePeer(id types.ID)              {}