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