71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
package raft
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import (
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"code.google.com/p/goprotobuf/proto"
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"github.com/goraft/raft/protobuf"
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"io"
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"io/ioutil"
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)
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// The response returned from a server appending entries to the log.
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type AppendEntriesResponse struct {
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Term uint64
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// the current index of the server
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Index uint64
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Success bool
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CommitIndex uint64
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peer string
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append bool
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}
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// Creates a new AppendEntries response.
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func newAppendEntriesResponse(term uint64, success bool, index uint64, commitIndex uint64) *AppendEntriesResponse {
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return &AppendEntriesResponse{
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Term: term,
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Success: success,
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Index: index,
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CommitIndex: commitIndex,
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}
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}
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// Encodes the AppendEntriesResponse to a buffer. Returns the number of bytes
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// written and any error that may have occurred.
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func (resp *AppendEntriesResponse) Encode(w io.Writer) (int, error) {
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pb := &protobuf.ProtoAppendEntriesResponse{
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Term: proto.Uint64(resp.Term),
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Index: proto.Uint64(resp.Index),
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CommitIndex: proto.Uint64(resp.CommitIndex),
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Success: proto.Bool(resp.Success),
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}
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p, err := proto.Marshal(pb)
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if err != nil {
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return -1, err
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}
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return w.Write(p)
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}
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// Decodes the AppendEntriesResponse from a buffer. Returns the number of bytes read and
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// any error that occurs.
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func (resp *AppendEntriesResponse) Decode(r io.Reader) (int, error) {
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data, err := ioutil.ReadAll(r)
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if err != nil {
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return -1, err
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}
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totalBytes := len(data)
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pb := &protobuf.ProtoAppendEntriesResponse{}
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if err := proto.Unmarshal(data, pb); err != nil {
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return -1, err
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}
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resp.Term = pb.GetTerm()
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resp.Index = pb.GetIndex()
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resp.CommitIndex = pb.GetCommitIndex()
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resp.Success = pb.GetSuccess()
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return totalBytes, nil
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}
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