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package broker
import (
"context"
"fmt"
"io"
"github.com/chrislusf/seaweedfs/weed/util/log"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (broker *MessageBroker) appendToFile(targetFile string, topicConfig *messaging_pb.TopicConfiguration, data []byte) error {
assignResult, uploadResult, err2 := broker.assignAndUpload(topicConfig, data)
if err2 != nil {
return err2
}
dir, name := util.FullPath(targetFile).DirAndName()
// append the chunk
if err := broker.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.AppendToEntryRequest{
Directory: dir,
EntryName: name,
Chunks: []*filer_pb.FileChunk{uploadResult.ToPbFileChunk(assignResult.Fid, 0)},
}
_, err := client.AppendToEntry(context.Background(), request)
if err != nil {
log.Infof("append to file %v: %v", request, err)
return err
}
return nil
}); err != nil {
return fmt.Errorf("append to file %v: %v", targetFile, err)
}
return nil
}
func (broker *MessageBroker) assignAndUpload(topicConfig *messaging_pb.TopicConfiguration, data []byte) (*operation.AssignResult, *operation.UploadResult, error) {
var assignResult = &operation.AssignResult{}
// assign a volume location
if err := broker.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.AssignVolumeRequest{
Count: 1,
Replication: topicConfig.Replication,
Collection: topicConfig.Collection,
}
resp, err := client.AssignVolume(context.Background(), request)
if err != nil {
log.Infof("assign volume failure %v: %v", request, err)
return err
}
if resp.Error != "" {
return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
}
assignResult.Auth = security.EncodedJwt(resp.Auth)
assignResult.Fid = resp.FileId
assignResult.Url = resp.Url
assignResult.PublicUrl = resp.PublicUrl
assignResult.Count = uint64(resp.Count)
return nil
}); err != nil {
return nil, nil, err
}
// upload data
targetUrl := fmt.Sprintf("http://%s/%s", assignResult.Url, assignResult.Fid)
uploadResult, err := operation.UploadData(targetUrl, "", broker.option.Cipher, data, false, "", nil, assignResult.Auth)
if err != nil {
return nil, nil, fmt.Errorf("upload data %s: %v", targetUrl, err)
}
// println("uploaded to", targetUrl)
return assignResult, uploadResult, nil
}
var _ = filer_pb.FilerClient(&MessageBroker{})
func (broker *MessageBroker) WithFilerClient(fn func(filer_pb.SeaweedFilerClient) error) (err error) {
for _, filer := range broker.option.Filers {
if err = pb.WithFilerClient(filer, broker.grpcDialOption, fn); err != nil {
if err == io.EOF {
return
}
log.Infof("fail to connect to %s: %v", filer, err)
} else {
break
}
}
return
}
func (broker *MessageBroker) AdjustedUrl(location *filer_pb.Location) string {
return location.Url
}
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