mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-05-03 10:00:03 +02:00
452 lines
17 KiB
Go
452 lines
17 KiB
Go
package command
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/pb"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
"github.com/chrislusf/seaweedfs/weed/replication"
|
|
"github.com/chrislusf/seaweedfs/weed/replication/sink"
|
|
"github.com/chrislusf/seaweedfs/weed/replication/sink/filersink"
|
|
"github.com/chrislusf/seaweedfs/weed/replication/source"
|
|
"github.com/chrislusf/seaweedfs/weed/security"
|
|
statsCollect "github.com/chrislusf/seaweedfs/weed/stats"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
"github.com/chrislusf/seaweedfs/weed/util/grace"
|
|
"google.golang.org/grpc"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
type SyncOptions struct {
|
|
isActivePassive *bool
|
|
filerA *string
|
|
filerB *string
|
|
aPath *string
|
|
aExcludePaths *string
|
|
bPath *string
|
|
bExcludePaths *string
|
|
aReplication *string
|
|
bReplication *string
|
|
aCollection *string
|
|
bCollection *string
|
|
aTtlSec *int
|
|
bTtlSec *int
|
|
aDiskType *string
|
|
bDiskType *string
|
|
aDebug *bool
|
|
bDebug *bool
|
|
aFromTsMs *int64
|
|
bFromTsMs *int64
|
|
aProxyByFiler *bool
|
|
bProxyByFiler *bool
|
|
metricsHttpPort *int
|
|
clientId int32
|
|
clientEpoch int32
|
|
}
|
|
|
|
var (
|
|
syncOptions SyncOptions
|
|
syncCpuProfile *string
|
|
syncMemProfile *string
|
|
)
|
|
|
|
func init() {
|
|
cmdFilerSynchronize.Run = runFilerSynchronize // break init cycle
|
|
syncOptions.isActivePassive = cmdFilerSynchronize.Flag.Bool("isActivePassive", false, "one directional follow from A to B if true")
|
|
syncOptions.filerA = cmdFilerSynchronize.Flag.String("a", "", "filer A in one SeaweedFS cluster")
|
|
syncOptions.filerB = cmdFilerSynchronize.Flag.String("b", "", "filer B in the other SeaweedFS cluster")
|
|
syncOptions.aPath = cmdFilerSynchronize.Flag.String("a.path", "/", "directory to sync on filer A")
|
|
syncOptions.aExcludePaths = cmdFilerSynchronize.Flag.String("a.excludePaths", "", "exclude directories to sync on filer A")
|
|
syncOptions.bPath = cmdFilerSynchronize.Flag.String("b.path", "/", "directory to sync on filer B")
|
|
syncOptions.bExcludePaths = cmdFilerSynchronize.Flag.String("b.excludePaths", "", "exclude directories to sync on filer B")
|
|
syncOptions.aReplication = cmdFilerSynchronize.Flag.String("a.replication", "", "replication on filer A")
|
|
syncOptions.bReplication = cmdFilerSynchronize.Flag.String("b.replication", "", "replication on filer B")
|
|
syncOptions.aCollection = cmdFilerSynchronize.Flag.String("a.collection", "", "collection on filer A")
|
|
syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
|
|
syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
|
|
syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
|
|
syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer A")
|
|
syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer B")
|
|
syncOptions.aProxyByFiler = cmdFilerSynchronize.Flag.Bool("a.filerProxy", false, "read and write file chunks by filer A instead of volume servers")
|
|
syncOptions.bProxyByFiler = cmdFilerSynchronize.Flag.Bool("b.filerProxy", false, "read and write file chunks by filer B instead of volume servers")
|
|
syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
|
|
syncOptions.bDebug = cmdFilerSynchronize.Flag.Bool("b.debug", false, "debug mode to print out filer B received files")
|
|
syncOptions.aFromTsMs = cmdFilerSynchronize.Flag.Int64("a.fromTsMs", 0, "synchronization from timestamp on filer A. The unit is millisecond")
|
|
syncOptions.bFromTsMs = cmdFilerSynchronize.Flag.Int64("b.fromTsMs", 0, "synchronization from timestamp on filer B. The unit is millisecond")
|
|
syncCpuProfile = cmdFilerSynchronize.Flag.String("cpuprofile", "", "cpu profile output file")
|
|
syncMemProfile = cmdFilerSynchronize.Flag.String("memprofile", "", "memory profile output file")
|
|
syncOptions.metricsHttpPort = cmdFilerSynchronize.Flag.Int("metricsPort", 0, "metrics listen port")
|
|
syncOptions.clientId = util.RandomInt32()
|
|
}
|
|
|
|
var cmdFilerSynchronize = &Command{
|
|
UsageLine: "filer.sync -a=<oneFilerHost>:<oneFilerPort> -b=<otherFilerHost>:<otherFilerPort>",
|
|
Short: "resumable continuous synchronization between two active-active or active-passive SeaweedFS clusters",
|
|
Long: `resumable continuous synchronization for file changes between two active-active or active-passive filers
|
|
|
|
filer.sync listens on filer notifications. If any file is updated, it will fetch the updated content,
|
|
and write to the other destination. Different from filer.replicate:
|
|
|
|
* filer.sync only works between two filers.
|
|
* filer.sync does not need any special message queue setup.
|
|
* filer.sync supports both active-active and active-passive modes.
|
|
|
|
If restarted, the synchronization will resume from the previous checkpoints, persisted every minute.
|
|
A fresh sync will start from the earliest metadata logs.
|
|
|
|
`,
|
|
}
|
|
|
|
func runFilerSynchronize(cmd *Command, args []string) bool {
|
|
|
|
util.LoadConfiguration("security", false)
|
|
grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
|
|
|
|
grace.SetupProfiling(*syncCpuProfile, *syncMemProfile)
|
|
|
|
filerA := pb.ServerAddress(*syncOptions.filerA)
|
|
filerB := pb.ServerAddress(*syncOptions.filerB)
|
|
|
|
// start filer.sync metrics server
|
|
go statsCollect.StartMetricsServer(*syncOptions.metricsHttpPort)
|
|
|
|
// read a filer signature
|
|
aFilerSignature, aFilerErr := replication.ReadFilerSignature(grpcDialOption, filerA)
|
|
if aFilerErr != nil {
|
|
glog.Errorf("get filer 'a' signature %d error from %s to %s: %v", aFilerSignature, *syncOptions.filerA, *syncOptions.filerB, aFilerErr)
|
|
return true
|
|
}
|
|
// read b filer signature
|
|
bFilerSignature, bFilerErr := replication.ReadFilerSignature(grpcDialOption, filerB)
|
|
if bFilerErr != nil {
|
|
glog.Errorf("get filer 'b' signature %d error from %s to %s: %v", bFilerSignature, *syncOptions.filerA, *syncOptions.filerB, bFilerErr)
|
|
return true
|
|
}
|
|
|
|
go func() {
|
|
// a->b
|
|
// set synchronization start timestamp to offset
|
|
initOffsetError := initOffsetFromTsMs(grpcDialOption, filerB, aFilerSignature, *syncOptions.bFromTsMs)
|
|
if initOffsetError != nil {
|
|
glog.Errorf("init offset from timestamp %d error from %s to %s: %v", *syncOptions.bFromTsMs, *syncOptions.filerA, *syncOptions.filerB, initOffsetError)
|
|
os.Exit(2)
|
|
}
|
|
for {
|
|
syncOptions.clientEpoch++
|
|
err := doSubscribeFilerMetaChanges(
|
|
syncOptions.clientId,
|
|
syncOptions.clientEpoch,
|
|
grpcDialOption,
|
|
filerA,
|
|
*syncOptions.aPath,
|
|
strings.Split(*syncOptions.aExcludePaths, ","),
|
|
*syncOptions.aProxyByFiler,
|
|
filerB,
|
|
*syncOptions.bPath,
|
|
*syncOptions.bReplication,
|
|
*syncOptions.bCollection,
|
|
*syncOptions.bTtlSec,
|
|
*syncOptions.bProxyByFiler,
|
|
*syncOptions.bDiskType,
|
|
*syncOptions.bDebug,
|
|
aFilerSignature,
|
|
bFilerSignature)
|
|
if err != nil {
|
|
glog.Errorf("sync from %s to %s: %v", *syncOptions.filerA, *syncOptions.filerB, err)
|
|
time.Sleep(1747 * time.Millisecond)
|
|
}
|
|
}
|
|
}()
|
|
|
|
if !*syncOptions.isActivePassive {
|
|
// b->a
|
|
// set synchronization start timestamp to offset
|
|
initOffsetError := initOffsetFromTsMs(grpcDialOption, filerA, bFilerSignature, *syncOptions.aFromTsMs)
|
|
if initOffsetError != nil {
|
|
glog.Errorf("init offset from timestamp %d error from %s to %s: %v", *syncOptions.aFromTsMs, *syncOptions.filerB, *syncOptions.filerA, initOffsetError)
|
|
os.Exit(2)
|
|
}
|
|
go func() {
|
|
for {
|
|
syncOptions.clientEpoch++
|
|
err := doSubscribeFilerMetaChanges(
|
|
syncOptions.clientId,
|
|
syncOptions.clientEpoch,
|
|
grpcDialOption,
|
|
filerB,
|
|
*syncOptions.bPath,
|
|
strings.Split(*syncOptions.bExcludePaths, ","),
|
|
*syncOptions.bProxyByFiler,
|
|
filerA,
|
|
*syncOptions.aPath,
|
|
*syncOptions.aReplication,
|
|
*syncOptions.aCollection,
|
|
*syncOptions.aTtlSec,
|
|
*syncOptions.aProxyByFiler,
|
|
*syncOptions.aDiskType,
|
|
*syncOptions.aDebug,
|
|
bFilerSignature,
|
|
aFilerSignature)
|
|
if err != nil {
|
|
glog.Errorf("sync from %s to %s: %v", *syncOptions.filerB, *syncOptions.filerA, err)
|
|
time.Sleep(2147 * time.Millisecond)
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
select {}
|
|
|
|
return true
|
|
}
|
|
|
|
// initOffsetFromTsMs Initialize offset
|
|
func initOffsetFromTsMs(grpcDialOption grpc.DialOption, targetFiler pb.ServerAddress, sourceFilerSignature int32, fromTsMs int64) error {
|
|
if fromTsMs <= 0 {
|
|
return nil
|
|
}
|
|
// convert to nanosecond
|
|
fromTsNs := fromTsMs * 1000_000
|
|
// If not successful, exit the program.
|
|
setOffsetErr := setOffset(grpcDialOption, targetFiler, SyncKeyPrefix, sourceFilerSignature, fromTsNs)
|
|
if setOffsetErr != nil {
|
|
return setOffsetErr
|
|
}
|
|
glog.Infof("setOffset from timestamp ms success! start offset: %d from %s to %s", fromTsNs, *syncOptions.filerA, *syncOptions.filerB)
|
|
return nil
|
|
}
|
|
|
|
func doSubscribeFilerMetaChanges(clientId int32, clientEpoch int32, grpcDialOption grpc.DialOption, sourceFiler pb.ServerAddress, sourcePath string, sourceExcludePaths []string, sourceReadChunkFromFiler bool, targetFiler pb.ServerAddress, targetPath string,
|
|
replicationStr, collection string, ttlSec int, sinkWriteChunkByFiler bool, diskType string, debug bool, sourceFilerSignature int32, targetFilerSignature int32) error {
|
|
|
|
// if first time, start from now
|
|
// if has previously synced, resume from that point of time
|
|
sourceFilerOffsetTsNs, err := getOffset(grpcDialOption, targetFiler, getSignaturePrefixByPath(sourcePath), sourceFilerSignature)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
glog.V(0).Infof("start sync %s(%d) => %s(%d) from %v(%d)", sourceFiler, sourceFilerSignature, targetFiler, targetFilerSignature, time.Unix(0, sourceFilerOffsetTsNs), sourceFilerOffsetTsNs)
|
|
|
|
// create filer sink
|
|
filerSource := &source.FilerSource{}
|
|
filerSource.DoInitialize(sourceFiler.ToHttpAddress(), sourceFiler.ToGrpcAddress(), sourcePath, sourceReadChunkFromFiler)
|
|
filerSink := &filersink.FilerSink{}
|
|
filerSink.DoInitialize(targetFiler.ToHttpAddress(), targetFiler.ToGrpcAddress(), targetPath, replicationStr, collection, ttlSec, diskType, grpcDialOption, sinkWriteChunkByFiler)
|
|
filerSink.SetSourceFiler(filerSource)
|
|
|
|
persistEventFn := genProcessFunction(sourcePath, targetPath, sourceExcludePaths, filerSink, debug)
|
|
|
|
processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
|
|
message := resp.EventNotification
|
|
for _, sig := range message.Signatures {
|
|
if sig == targetFilerSignature && targetFilerSignature != 0 {
|
|
fmt.Printf("%s skipping %s change to %v\n", targetFiler, sourceFiler, message)
|
|
return nil
|
|
}
|
|
}
|
|
return persistEventFn(resp)
|
|
}
|
|
|
|
var lastLogTsNs = time.Now().UnixNano()
|
|
var clientName = fmt.Sprintf("syncFrom_%s_To_%s", string(sourceFiler), string(targetFiler))
|
|
processEventFnWithOffset := pb.AddOffsetFunc(processEventFn, 3*time.Second, func(counter int64, lastTsNs int64) error {
|
|
now := time.Now().UnixNano()
|
|
glog.V(0).Infof("sync %s to %s progressed to %v %0.2f/sec", sourceFiler, targetFiler, time.Unix(0, lastTsNs), float64(counter)/(float64(now-lastLogTsNs)/1e9))
|
|
lastLogTsNs = now
|
|
// collect synchronous offset
|
|
statsCollect.FilerSyncOffsetGauge.WithLabelValues(sourceFiler.String(), targetFiler.String(), clientName, sourcePath).Set(float64(lastTsNs))
|
|
return setOffset(grpcDialOption, targetFiler, getSignaturePrefixByPath(sourcePath), sourceFilerSignature, lastTsNs)
|
|
})
|
|
|
|
return pb.FollowMetadata(sourceFiler, grpcDialOption, clientName, clientId, clientEpoch,
|
|
sourcePath, nil, sourceFilerOffsetTsNs, 0, targetFilerSignature, processEventFnWithOffset, pb.RetryForeverOnError)
|
|
|
|
}
|
|
|
|
const (
|
|
SyncKeyPrefix = "sync."
|
|
)
|
|
|
|
// When each business is distinguished according to path, and offsets need to be maintained separately.
|
|
func getSignaturePrefixByPath(path string) string {
|
|
// compatible historical version
|
|
if path == "/" {
|
|
return SyncKeyPrefix
|
|
} else {
|
|
return SyncKeyPrefix + path
|
|
}
|
|
}
|
|
|
|
func getOffset(grpcDialOption grpc.DialOption, filer pb.ServerAddress, signaturePrefix string, signature int32) (lastOffsetTsNs int64, readErr error) {
|
|
|
|
readErr = pb.WithFilerClient(false, filer, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
|
|
syncKey := []byte(signaturePrefix + "____")
|
|
util.Uint32toBytes(syncKey[len(signaturePrefix):len(signaturePrefix)+4], uint32(signature))
|
|
|
|
resp, err := client.KvGet(context.Background(), &filer_pb.KvGetRequest{Key: syncKey})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(resp.Error) != 0 {
|
|
return errors.New(resp.Error)
|
|
}
|
|
if len(resp.Value) < 8 {
|
|
return nil
|
|
}
|
|
|
|
lastOffsetTsNs = int64(util.BytesToUint64(resp.Value))
|
|
|
|
return nil
|
|
})
|
|
|
|
return
|
|
|
|
}
|
|
|
|
func setOffset(grpcDialOption grpc.DialOption, filer pb.ServerAddress, signaturePrefix string, signature int32, offsetTsNs int64) error {
|
|
return pb.WithFilerClient(false, filer, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
syncKey := []byte(signaturePrefix + "____")
|
|
util.Uint32toBytes(syncKey[len(signaturePrefix):len(signaturePrefix)+4], uint32(signature))
|
|
|
|
valueBuf := make([]byte, 8)
|
|
util.Uint64toBytes(valueBuf, uint64(offsetTsNs))
|
|
|
|
resp, err := client.KvPut(context.Background(), &filer_pb.KvPutRequest{
|
|
Key: syncKey,
|
|
Value: valueBuf,
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(resp.Error) != 0 {
|
|
return errors.New(resp.Error)
|
|
}
|
|
|
|
return nil
|
|
|
|
})
|
|
|
|
}
|
|
|
|
func genProcessFunction(sourcePath string, targetPath string, excludePaths []string, dataSink sink.ReplicationSink, debug bool) func(resp *filer_pb.SubscribeMetadataResponse) error {
|
|
// process function
|
|
processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
|
|
message := resp.EventNotification
|
|
|
|
var sourceOldKey, sourceNewKey util.FullPath
|
|
if message.OldEntry != nil {
|
|
sourceOldKey = util.FullPath(resp.Directory).Child(message.OldEntry.Name)
|
|
}
|
|
if message.NewEntry != nil {
|
|
sourceNewKey = util.FullPath(message.NewParentPath).Child(message.NewEntry.Name)
|
|
}
|
|
|
|
if debug {
|
|
glog.V(0).Infof("received %v", resp)
|
|
}
|
|
|
|
if !strings.HasPrefix(resp.Directory, sourcePath) {
|
|
return nil
|
|
}
|
|
for _, excludePath := range excludePaths {
|
|
if strings.HasPrefix(resp.Directory, excludePath) {
|
|
return nil
|
|
}
|
|
}
|
|
// handle deletions
|
|
if filer_pb.IsDelete(resp) {
|
|
if !strings.HasPrefix(string(sourceOldKey), sourcePath) {
|
|
return nil
|
|
}
|
|
key := buildKey(dataSink, message, targetPath, sourceOldKey, sourcePath)
|
|
if !dataSink.IsIncremental() {
|
|
return dataSink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// handle new entries
|
|
if filer_pb.IsCreate(resp) {
|
|
if !strings.HasPrefix(string(sourceNewKey), sourcePath) {
|
|
return nil
|
|
}
|
|
key := buildKey(dataSink, message, targetPath, sourceNewKey, sourcePath)
|
|
return dataSink.CreateEntry(key, message.NewEntry, message.Signatures)
|
|
}
|
|
|
|
// this is something special?
|
|
if filer_pb.IsEmpty(resp) {
|
|
return nil
|
|
}
|
|
|
|
// handle updates
|
|
if strings.HasPrefix(string(sourceOldKey), sourcePath) {
|
|
// old key is in the watched directory
|
|
if strings.HasPrefix(string(sourceNewKey), sourcePath) {
|
|
// new key is also in the watched directory
|
|
if !dataSink.IsIncremental() {
|
|
oldKey := util.Join(targetPath, string(sourceOldKey)[len(sourcePath):])
|
|
message.NewParentPath = util.Join(targetPath, message.NewParentPath[len(sourcePath):])
|
|
foundExisting, err := dataSink.UpdateEntry(string(oldKey), message.OldEntry, message.NewParentPath, message.NewEntry, message.DeleteChunks, message.Signatures)
|
|
if foundExisting {
|
|
return err
|
|
}
|
|
|
|
// not able to find old entry
|
|
if err = dataSink.DeleteEntry(string(oldKey), message.OldEntry.IsDirectory, false, message.Signatures); err != nil {
|
|
return fmt.Errorf("delete old entry %v: %v", oldKey, err)
|
|
}
|
|
}
|
|
// create the new entry
|
|
newKey := buildKey(dataSink, message, targetPath, sourceNewKey, sourcePath)
|
|
return dataSink.CreateEntry(newKey, message.NewEntry, message.Signatures)
|
|
|
|
} else {
|
|
// new key is outside of the watched directory
|
|
if !dataSink.IsIncremental() {
|
|
key := buildKey(dataSink, message, targetPath, sourceOldKey, sourcePath)
|
|
return dataSink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
|
|
}
|
|
}
|
|
} else {
|
|
// old key is outside of the watched directory
|
|
if strings.HasPrefix(string(sourceNewKey), sourcePath) {
|
|
// new key is in the watched directory
|
|
key := buildKey(dataSink, message, targetPath, sourceNewKey, sourcePath)
|
|
return dataSink.CreateEntry(key, message.NewEntry, message.Signatures)
|
|
} else {
|
|
// new key is also outside of the watched directory
|
|
// skip
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
return processEventFn
|
|
}
|
|
|
|
func buildKey(dataSink sink.ReplicationSink, message *filer_pb.EventNotification, targetPath string, sourceKey util.FullPath, sourcePath string) (key string) {
|
|
if !dataSink.IsIncremental() {
|
|
key = util.Join(targetPath, string(sourceKey)[len(sourcePath):])
|
|
} else {
|
|
var mTime int64
|
|
if message.NewEntry != nil {
|
|
mTime = message.NewEntry.Attributes.Mtime
|
|
} else if message.OldEntry != nil {
|
|
mTime = message.OldEntry.Attributes.Mtime
|
|
}
|
|
dateKey := time.Unix(mTime, 0).Format("2006-01-02")
|
|
key = util.Join(targetPath, dateKey, string(sourceKey)[len(sourcePath):])
|
|
}
|
|
|
|
return escapeKey(key)
|
|
}
|