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package sink
import (
"context"
"fmt"
"strings"
"sync"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (fs *FilerSink) replicateChunks(sourceChunks []*filer_pb.FileChunk) (replicatedChunks []*filer_pb.FileChunk, err error) {
if len(sourceChunks) == 0 {
return
}
var wg sync.WaitGroup
for _, sourceChunk := range sourceChunks {
wg.Add(1)
go func(chunk *filer_pb.FileChunk) {
defer wg.Done()
replicatedChunk, e := fs.replicateOneChunk(chunk)
if e != nil {
err = e
}
replicatedChunks = append(replicatedChunks, replicatedChunk)
}(sourceChunk)
}
wg.Wait()
return
}
func (fs *FilerSink) replicateOneChunk(sourceChunk *filer_pb.FileChunk) (*filer_pb.FileChunk, error) {
fileId, err := fs.fetchAndWrite(sourceChunk)
if err != nil {
return nil, fmt.Errorf("copy %s: %v", sourceChunk.FileId, err)
}
return &filer_pb.FileChunk{
FileId: fileId,
Offset: sourceChunk.Offset,
Size: sourceChunk.Size,
Mtime: sourceChunk.Mtime,
ETag: sourceChunk.ETag,
SourceFileId: sourceChunk.FileId,
}, nil
}
func (fs *FilerSink) fetchAndWrite(sourceChunk *filer_pb.FileChunk) (fileId string, err error) {
filename, header, readCloser, err := fs.filerSource.ReadPart(sourceChunk.FileId)
if err != nil {
return "", fmt.Errorf("read part %s: %v", sourceChunk.FileId, err)
}
defer readCloser.Close()
var host string
if err := fs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.AssignVolumeRequest{
Count: 1,
Replication: fs.replication,
Collection: fs.collection,
TtlSec: fs.ttlSec,
DataCenter: fs.dataCenter,
}
resp, err := client.AssignVolume(context.Background(), request)
if err != nil {
glog.V(0).Infof("assign volume failure %v: %v", request, err)
return err
}
fileId, host = resp.FileId, resp.Url
return nil
}); err != nil {
return "", fmt.Errorf("filerGrpcAddress assign volume: %v", err)
}
fileUrl := fmt.Sprintf("http://%s/%s", host, fileId)
glog.V(4).Infof("replicating %s to %s header:%+v", filename, fileUrl, header)
uploadResult, err := operation.Upload(fileUrl, filename, readCloser,
"gzip" == header.Get("Content-Encoding"), header.Get("Content-Type"), nil, "")
if err != nil {
glog.V(0).Infof("upload data %v to %s: %v", filename, fileUrl, err)
return "", fmt.Errorf("upload data: %v", err)
}
if uploadResult.Error != "" {
glog.V(0).Infof("upload failure %v to %s: %v", filename, fileUrl, err)
return "", fmt.Errorf("upload result: %v", uploadResult.Error)
}
return
}
func (fs *FilerSink) withFilerClient(fn func(filer_pb.SeaweedFilerClient) error) error {
grpcConnection, err := util.GrpcDial(fs.grpcAddress)
if err != nil {
return fmt.Errorf("fail to dial %s: %v", fs.grpcAddress, err)
}
defer grpcConnection.Close()
client := filer_pb.NewSeaweedFilerClient(grpcConnection)
return fn(client)
}
func volumeId(fileId string) string {
lastCommaIndex := strings.LastIndex(fileId, ",")
if lastCommaIndex > 0 {
return fileId[:lastCommaIndex]
}
return fileId
}
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