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2.3 KiB

package broker
import (
"bytes"
"fmt"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/mq"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/pb/mq_pb"
"github.com/golang/protobuf/jsonpb"
"time"
)
func (broker *MessageQueueBroker) checkSegmentOnFiler(segment *mq.Segment) (brokers []pb.ServerAddress, err error) {
info, found, err := broker.readSegmentOnFiler(segment)
if err != nil {
return
}
if !found {
return
}
for _, b := range info.Brokers {
brokers = append(brokers, pb.ServerAddress(b))
}
return
}
func (broker *MessageQueueBroker) saveSegmentBrokersOnFiler(segment *mq.Segment, brokers []pb.ServerAddress) (err error) {
var nodes []string
for _, b := range brokers {
nodes = append(nodes, string(b))
}
broker.saveSegmentToFiler(segment, &mq_pb.SegmentInfo{
Segment: segment.ToPbSegment(),
StartTsNs: time.Now().UnixNano(),
Brokers: nodes,
StopTsNs: 0,
PreviousSegments: nil,
NextSegments: nil,
})
return
}
func (broker *MessageQueueBroker) readSegmentOnFiler(segment *mq.Segment) (info *mq_pb.SegmentInfo, found bool, err error) {
dir, name := segment.DirAndName()
found, err = filer_pb.Exists(broker, dir, name, false)
if !found || err != nil {
return
}
err = pb.WithFilerClient(false, broker.GetFiler(), broker.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
// read filer conf first
data, err := filer.ReadInsideFiler(client, dir, name)
if err != nil {
return fmt.Errorf("ReadEntry: %v", err)
}
// parse into filer conf object
info = &mq_pb.SegmentInfo{}
if err = jsonpb.Unmarshal(bytes.NewReader(data), info); err != nil {
return err
}
found = true
return nil
})
return
}
func (broker *MessageQueueBroker) saveSegmentToFiler(segment *mq.Segment, info *mq_pb.SegmentInfo) (err error) {
dir, name := segment.DirAndName()
var buf bytes.Buffer
filer.ProtoToText(&buf, info)
err = pb.WithFilerClient(false, broker.GetFiler(), broker.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
// read filer conf first
err := filer.SaveInsideFiler(client, dir, name, buf.Bytes())
if err != nil {
return fmt.Errorf("save segment info: %v", err)
}
return nil
})
return
}