mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-21 15:28:14 +08:00
66 lines
2.1 KiB
Go
66 lines
2.1 KiB
Go
package filer_client
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"github.com/seaweedfs/seaweedfs/weed/filer"
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
|
|
"google.golang.org/grpc"
|
|
jsonpb "google.golang.org/protobuf/encoding/protojson"
|
|
)
|
|
|
|
type FilerClientAccessor struct {
|
|
GetFiler func() pb.ServerAddress
|
|
GetGrpcDialOption func() grpc.DialOption
|
|
}
|
|
|
|
func (fca *FilerClientAccessor) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) error {
|
|
return pb.WithFilerClient(streamingMode, 0, fca.GetFiler(), fca.GetGrpcDialOption(), fn)
|
|
}
|
|
|
|
func (fca *FilerClientAccessor) SaveTopicConfToFiler(t *mq_pb.Topic, conf *mq_pb.ConfigureTopicResponse) error {
|
|
|
|
glog.V(0).Infof("save conf for topic %v to filer", t)
|
|
|
|
// save the topic configuration on filer
|
|
topicDir := fmt.Sprintf("%s/%s/%s", filer.TopicsDir, t.Namespace, t.Name)
|
|
if err := fca.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
|
|
var buf bytes.Buffer
|
|
filer.ProtoToText(&buf, conf)
|
|
return filer.SaveInsideFiler(client, topicDir, "topic.conf", buf.Bytes())
|
|
}); err != nil {
|
|
return fmt.Errorf("save topic to %s: %v", topicDir, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (fca *FilerClientAccessor) ReadTopicConfFromFiler(t topic.Topic) (conf *mq_pb.ConfigureTopicResponse, err error) {
|
|
|
|
glog.V(0).Infof("load conf for topic %v from filer", t)
|
|
|
|
topicDir := fmt.Sprintf("%s/%s/%s", filer.TopicsDir, t.Namespace, t.Name)
|
|
if err = fca.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
|
|
data, err := filer.ReadInsideFiler(client, topicDir, "topic.conf")
|
|
if err == filer_pb.ErrNotFound {
|
|
return err
|
|
}
|
|
if err != nil {
|
|
return fmt.Errorf("read topic.conf of %v: %v", t, err)
|
|
}
|
|
// parse into filer conf object
|
|
conf = &mq_pb.ConfigureTopicResponse{}
|
|
if err = jsonpb.Unmarshal(data, conf); err != nil {
|
|
return fmt.Errorf("unmarshal topic %v conf: %v", t, err)
|
|
}
|
|
return nil
|
|
}); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return conf, nil
|
|
}
|