mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
107 lines
3.3 KiB
Go
107 lines
3.3 KiB
Go
package replication
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"github.com/chrislusf/seaweedfs/weed/pb"
|
|
"google.golang.org/grpc"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
"github.com/chrislusf/seaweedfs/weed/replication/sink"
|
|
"github.com/chrislusf/seaweedfs/weed/replication/source"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
)
|
|
|
|
type Replicator struct {
|
|
sink sink.ReplicationSink
|
|
source *source.FilerSource
|
|
excludeDirs []string
|
|
}
|
|
|
|
func NewReplicator(sourceConfig util.Configuration, configPrefix string, dataSink sink.ReplicationSink) *Replicator {
|
|
|
|
source := &source.FilerSource{}
|
|
source.Initialize(sourceConfig, configPrefix)
|
|
|
|
dataSink.SetSourceFiler(source)
|
|
|
|
return &Replicator{
|
|
sink: dataSink,
|
|
source: source,
|
|
excludeDirs: sourceConfig.GetStringSlice(configPrefix + "excludeDirectories"),
|
|
}
|
|
}
|
|
|
|
func (r *Replicator) Replicate(ctx context.Context, key string, message *filer_pb.EventNotification) error {
|
|
if message.IsFromOtherCluster && r.sink.GetName() == "filer" {
|
|
return nil
|
|
}
|
|
if !strings.HasPrefix(key, r.source.Dir) {
|
|
glog.V(4).Infof("skipping %v outside of %v", key, r.source.Dir)
|
|
return nil
|
|
}
|
|
for _, excludeDir := range r.excludeDirs {
|
|
if strings.HasPrefix(key, excludeDir) {
|
|
glog.V(4).Infof("skipping %v of exclude dir %v", key, excludeDir)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
var dateKey string
|
|
if r.sink.IsIncremental() {
|
|
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")
|
|
}
|
|
newKey := util.Join(r.sink.GetSinkToDirectory(), dateKey, key[len(r.source.Dir):])
|
|
glog.V(3).Infof("replicate %s => %s", key, newKey)
|
|
key = newKey
|
|
if message.OldEntry != nil && message.NewEntry == nil {
|
|
glog.V(4).Infof("deleting %v", key)
|
|
return r.sink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
|
|
}
|
|
if message.OldEntry == nil && message.NewEntry != nil {
|
|
glog.V(4).Infof("creating %v", key)
|
|
return r.sink.CreateEntry(key, message.NewEntry, message.Signatures)
|
|
}
|
|
if message.OldEntry == nil && message.NewEntry == nil {
|
|
glog.V(0).Infof("weird message %+v", message)
|
|
return nil
|
|
}
|
|
|
|
foundExisting, err := r.sink.UpdateEntry(key, message.OldEntry, message.NewParentPath, message.NewEntry, message.DeleteChunks, message.Signatures)
|
|
if foundExisting {
|
|
glog.V(4).Infof("updated %v", key)
|
|
return err
|
|
}
|
|
|
|
err = r.sink.DeleteEntry(key, message.OldEntry.IsDirectory, false, message.Signatures)
|
|
if err != nil {
|
|
return fmt.Errorf("delete old entry %v: %v", key, err)
|
|
}
|
|
|
|
glog.V(4).Infof("creating missing %v", key)
|
|
return r.sink.CreateEntry(key, message.NewEntry, message.Signatures)
|
|
}
|
|
|
|
func ReadFilerSignature(grpcDialOption grpc.DialOption, filer pb.ServerAddress) (filerSignature int32, readErr error) {
|
|
if readErr = pb.WithFilerClient(false, filer, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
|
|
if resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{}); err != nil {
|
|
return fmt.Errorf("GetFilerConfiguration %s: %v", filer, err)
|
|
} else {
|
|
filerSignature = resp.Signature
|
|
}
|
|
return nil
|
|
}); readErr != nil {
|
|
return 0, readErr
|
|
}
|
|
return filerSignature, nil
|
|
}
|