func tryRaftLogEntry(kv engine.MVCCKeyValue) (string, error) {
var ent raftpb.Entry
if err := maybeUnmarshalInline(kv.Value, &ent); err != nil {
return "", err
}
if ent.Type == raftpb.EntryNormal {
if len(ent.Data) > 0 {
_, cmdData := storage.DecodeRaftCommand(ent.Data)
var cmd storagebase.RaftCommand
if err := cmd.Unmarshal(cmdData); err != nil {
return "", err
}
ent.Data = nil
return fmt.Sprintf("%s by %v\n%s\n%s\n", &ent, cmd.OriginReplica, cmd.Cmd, &cmd), nil
}
return fmt.Sprintf("%s: EMPTY\n", &ent), nil
} else if ent.Type == raftpb.EntryConfChange {
var cc raftpb.ConfChange
if err := cc.Unmarshal(ent.Data); err != nil {
return "", err
}
var ctx storage.ConfChangeContext
if err := ctx.Unmarshal(cc.Context); err != nil {
return "", err
}
var cmd storagebase.ReplicatedProposalData
if err := cmd.Unmarshal(ctx.Payload); err != nil {
return "", err
}
ent.Data = nil
return fmt.Sprintf("%s\n%s\n", &ent, &cmd), nil
}
return "", fmt.Errorf("Unknown log entry type: %s\n", &ent)
}
