raft: support learner

2024-09-27 06:25:44 +00:00 · 2017-11-11 10:38:21 +08:00
parent b64c1bfce6
commit c6f2db2e92
8 changed files with 611 additions and 104 deletions
--- a/raft/raftpb/raft.pb.go
+++ b/raft/raftpb/raft.pb.go
@@ -162,20 +162,23 @@ func (MessageType) EnumDescriptor() ([]byte, []int) { return fileDescriptorRaft,
 type ConfChangeType int32

 const (
-	ConfChangeAddNode    ConfChangeType = 0
-	ConfChangeRemoveNode ConfChangeType = 1
-	ConfChangeUpdateNode ConfChangeType = 2
+	ConfChangeAddNode        ConfChangeType = 0
+	ConfChangeRemoveNode     ConfChangeType = 1
+	ConfChangeUpdateNode     ConfChangeType = 2
+	ConfChangeAddLearnerNode ConfChangeType = 3
 )

 var ConfChangeType_name = map[int32]string{
 	0: "ConfChangeAddNode",
 	1: "ConfChangeRemoveNode",
 	2: "ConfChangeUpdateNode",
+	3: "ConfChangeAddLearnerNode",
 }
 var ConfChangeType_value = map[string]int32{
-	"ConfChangeAddNode":    0,
-	"ConfChangeRemoveNode": 1,
-	"ConfChangeUpdateNode": 2,
+	"ConfChangeAddNode":        0,
+	"ConfChangeRemoveNode":     1,
+	"ConfChangeUpdateNode":     2,
+	"ConfChangeAddLearnerNode": 3,
 }

 func (x ConfChangeType) Enum() *ConfChangeType {
@@ -267,6 +270,7 @@ func (*HardState) Descriptor() ([]byte, []int) { return fileDescriptorRaft, []in

 type ConfState struct {
 	Nodes            []uint64 `protobuf:"varint,1,rep,name=nodes" json:"nodes,omitempty"`
+	Learners         []uint64 `protobuf:"varint,2,rep,name=learners" json:"learners,omitempty"`
 	XXX_unrecognized []byte   `json:"-"`
 }

@@ -537,6 +541,13 @@ func (m *ConfState) MarshalTo(dAtA []byte) (int, error) {
 			i = encodeVarintRaft(dAtA, i, uint64(num))
 		}
 	}
+	if len(m.Learners) > 0 {
+		for _, num := range m.Learners {
+			dAtA[i] = 0x10
+			i++
+			i = encodeVarintRaft(dAtA, i, uint64(num))
+		}
+	}
 	if m.XXX_unrecognized != nil {
 		i += copy(dAtA[i:], m.XXX_unrecognized)
 	}
@@ -700,6 +711,11 @@ func (m *ConfState) Size() (n int) {
 			n += 1 + sovRaft(uint64(e))
 		}
 	}
+	if len(m.Learners) > 0 {
+		for _, e := range m.Learners {
+			n += 1 + sovRaft(uint64(e))
+		}
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -1619,6 +1635,68 @@ func (m *ConfState) Unmarshal(dAtA []byte) error {
 			} else {
 				return fmt.Errorf("proto: wrong wireType = %d for field Nodes", wireType)
 			}
+		case 2:
+			if wireType == 0 {
+				var v uint64
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return ErrIntOverflowRaft
+					}
+					if iNdEx >= l {
+						return io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					v |= (uint64(b) & 0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				m.Learners = append(m.Learners, v)
+			} else if wireType == 2 {
+				var packedLen int
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return ErrIntOverflowRaft
+					}
+					if iNdEx >= l {
+						return io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					packedLen |= (int(b) & 0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				if packedLen < 0 {
+					return ErrInvalidLengthRaft
+				}
+				postIndex := iNdEx + packedLen
+				if postIndex > l {
+					return io.ErrUnexpectedEOF
+				}
+				for iNdEx < postIndex {
+					var v uint64
+					for shift := uint(0); ; shift += 7 {
+						if shift >= 64 {
+							return ErrIntOverflowRaft
+						}
+						if iNdEx >= l {
+							return io.ErrUnexpectedEOF
+						}
+						b := dAtA[iNdEx]
+						iNdEx++
+						v |= (uint64(b) & 0x7F) << shift
+						if b < 0x80 {
+							break
+						}
+					}
+					m.Learners = append(m.Learners, v)
+				}
+			} else {
+				return fmt.Errorf("proto: wrong wireType = %d for field Learners", wireType)
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipRaft(dAtA[iNdEx:])
@@ -1888,55 +1966,56 @@ var (
 func init() { proto.RegisterFile("raft.proto", fileDescriptorRaft) }

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+	0xc2, 0x60, 0x96, 0xc7, 0x6f, 0x52, 0x45, 0x62, 0x71, 0x23, 0xae, 0x6f, 0x89, 0x01, 0xee, 0xc1,
+	0x8e, 0x2b, 0x64, 0x1e, 0x6f, 0x9d, 0xb3, 0xd0, 0xa5, 0x9d, 0xde, 0xd0, 0xe2, 0x97, 0xef, 0xd6,
+	0x52, 0xad, 0x13, 0xd6, 0xc7, 0x8f, 0x60, 0x6f, 0x96, 0xc7, 0x57, 0x4a, 0xa4, 0xf9, 0x92, 0xd4,
+	0x4b, 0x12, 0x11, 0x29, 0xb6, 0xe3, 0x6e, 0x5f, 0xad, 0x12, 0x92, 0x6b, 0x7d, 0x29, 0x7f, 0x65,
+	0x03, 0x27, 0x66, 0x4e, 0x22, 0xb2, 0x3f, 0x43, 0xb6, 0xeb, 0xc4, 0x6c, 0x10, 0x2b, 0x86, 0xb9,
+	0x79, 0x5f, 0x29, 0xb2, 0x23, 0xee, 0xb9, 0xae, 0x2e, 0xb6, 0x39, 0x78, 0x78, 0x07, 0x83, 0xfa,
+	0xf3, 0x1a, 0x1d, 0x5b, 0xe4, 0x45, 0x14, 0x99, 0xb7, 0x64, 0x0d, 0xe4, 0x30, 0xdc, 0xc2, 0x73,
+	0x4a, 0xe4, 0x5b, 0xb2, 0x8c, 0x57, 0x67, 0xde, 0x64, 0x91, 0xd0, 0x05, 0xe3, 0xe3, 0x01, 0xf0,
+	0x5a, 0xa9, 0x97, 0xc5, 0x36, 0x5a, 0xb6, 0x79, 0xc2, 0xef, 0x3f, 0x8c, 0x1a, 0xef, 0x3f, 0x8c,
+	0x1a, 0xf7, 0x0f, 0x23, 0xef, 0xfd, 0xc3, 0xc8, 0xfb, 0xf7, 0x61, 0xe4, 0xfd, 0xf9, 0xdf, 0xa8,
+	0xf1, 0x7f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x86, 0x52, 0x5b, 0xe0, 0x74, 0x06, 0x00, 0x00,
 }
--- a/raft/raftpb/raft.proto
+++ b/raft/raftpb/raft.proto
@@ -76,13 +76,15 @@ message HardState {
 }

 message ConfState {
-	repeated uint64 nodes = 1;
+	repeated uint64 nodes    = 1;
+	repeated uint64 learners = 2;
 }

 enum ConfChangeType {
-	ConfChangeAddNode    = 0;
-	ConfChangeRemoveNode = 1;
-	ConfChangeUpdateNode = 2;
+	ConfChangeAddNode        = 0;
+	ConfChangeRemoveNode     = 1;
+	ConfChangeUpdateNode     = 2;
+	ConfChangeAddLearnerNode = 3;
 }

 message ConfChange {