Prince Pereira | c1c21d6 | 2021-04-22 08:38:15 +0000 | [diff] [blame^] | 1 | package sarama |
| 2 | |
| 3 | type GroupProtocol struct { |
| 4 | Name string |
| 5 | Metadata []byte |
| 6 | } |
| 7 | |
| 8 | func (p *GroupProtocol) decode(pd packetDecoder) (err error) { |
| 9 | p.Name, err = pd.getString() |
| 10 | if err != nil { |
| 11 | return err |
| 12 | } |
| 13 | p.Metadata, err = pd.getBytes() |
| 14 | return err |
| 15 | } |
| 16 | |
| 17 | func (p *GroupProtocol) encode(pe packetEncoder) (err error) { |
| 18 | if err := pe.putString(p.Name); err != nil { |
| 19 | return err |
| 20 | } |
| 21 | if err := pe.putBytes(p.Metadata); err != nil { |
| 22 | return err |
| 23 | } |
| 24 | return nil |
| 25 | } |
| 26 | |
| 27 | type JoinGroupRequest struct { |
| 28 | Version int16 |
| 29 | GroupId string |
| 30 | SessionTimeout int32 |
| 31 | RebalanceTimeout int32 |
| 32 | MemberId string |
| 33 | ProtocolType string |
| 34 | GroupProtocols map[string][]byte // deprecated; use OrderedGroupProtocols |
| 35 | OrderedGroupProtocols []*GroupProtocol |
| 36 | } |
| 37 | |
| 38 | func (r *JoinGroupRequest) encode(pe packetEncoder) error { |
| 39 | if err := pe.putString(r.GroupId); err != nil { |
| 40 | return err |
| 41 | } |
| 42 | pe.putInt32(r.SessionTimeout) |
| 43 | if r.Version >= 1 { |
| 44 | pe.putInt32(r.RebalanceTimeout) |
| 45 | } |
| 46 | if err := pe.putString(r.MemberId); err != nil { |
| 47 | return err |
| 48 | } |
| 49 | if err := pe.putString(r.ProtocolType); err != nil { |
| 50 | return err |
| 51 | } |
| 52 | |
| 53 | if len(r.GroupProtocols) > 0 { |
| 54 | if len(r.OrderedGroupProtocols) > 0 { |
| 55 | return PacketDecodingError{"cannot specify both GroupProtocols and OrderedGroupProtocols on JoinGroupRequest"} |
| 56 | } |
| 57 | |
| 58 | if err := pe.putArrayLength(len(r.GroupProtocols)); err != nil { |
| 59 | return err |
| 60 | } |
| 61 | for name, metadata := range r.GroupProtocols { |
| 62 | if err := pe.putString(name); err != nil { |
| 63 | return err |
| 64 | } |
| 65 | if err := pe.putBytes(metadata); err != nil { |
| 66 | return err |
| 67 | } |
| 68 | } |
| 69 | } else { |
| 70 | if err := pe.putArrayLength(len(r.OrderedGroupProtocols)); err != nil { |
| 71 | return err |
| 72 | } |
| 73 | for _, protocol := range r.OrderedGroupProtocols { |
| 74 | if err := protocol.encode(pe); err != nil { |
| 75 | return err |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | return nil |
| 81 | } |
| 82 | |
| 83 | func (r *JoinGroupRequest) decode(pd packetDecoder, version int16) (err error) { |
| 84 | r.Version = version |
| 85 | |
| 86 | if r.GroupId, err = pd.getString(); err != nil { |
| 87 | return |
| 88 | } |
| 89 | |
| 90 | if r.SessionTimeout, err = pd.getInt32(); err != nil { |
| 91 | return |
| 92 | } |
| 93 | |
| 94 | if version >= 1 { |
| 95 | if r.RebalanceTimeout, err = pd.getInt32(); err != nil { |
| 96 | return err |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | if r.MemberId, err = pd.getString(); err != nil { |
| 101 | return |
| 102 | } |
| 103 | |
| 104 | if r.ProtocolType, err = pd.getString(); err != nil { |
| 105 | return |
| 106 | } |
| 107 | |
| 108 | n, err := pd.getArrayLength() |
| 109 | if err != nil { |
| 110 | return err |
| 111 | } |
| 112 | if n == 0 { |
| 113 | return nil |
| 114 | } |
| 115 | |
| 116 | r.GroupProtocols = make(map[string][]byte) |
| 117 | for i := 0; i < n; i++ { |
| 118 | protocol := &GroupProtocol{} |
| 119 | if err := protocol.decode(pd); err != nil { |
| 120 | return err |
| 121 | } |
| 122 | r.GroupProtocols[protocol.Name] = protocol.Metadata |
| 123 | r.OrderedGroupProtocols = append(r.OrderedGroupProtocols, protocol) |
| 124 | } |
| 125 | |
| 126 | return nil |
| 127 | } |
| 128 | |
| 129 | func (r *JoinGroupRequest) key() int16 { |
| 130 | return 11 |
| 131 | } |
| 132 | |
| 133 | func (r *JoinGroupRequest) version() int16 { |
| 134 | return r.Version |
| 135 | } |
| 136 | |
| 137 | func (r *JoinGroupRequest) requiredVersion() KafkaVersion { |
| 138 | switch r.Version { |
| 139 | case 2: |
| 140 | return V0_11_0_0 |
| 141 | case 1: |
| 142 | return V0_10_1_0 |
| 143 | default: |
| 144 | return V0_9_0_0 |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | func (r *JoinGroupRequest) AddGroupProtocol(name string, metadata []byte) { |
| 149 | r.OrderedGroupProtocols = append(r.OrderedGroupProtocols, &GroupProtocol{ |
| 150 | Name: name, |
| 151 | Metadata: metadata, |
| 152 | }) |
| 153 | } |
| 154 | |
| 155 | func (r *JoinGroupRequest) AddGroupProtocolMetadata(name string, metadata *ConsumerGroupMemberMetadata) error { |
| 156 | bin, err := encode(metadata, nil) |
| 157 | if err != nil { |
| 158 | return err |
| 159 | } |
| 160 | |
| 161 | r.AddGroupProtocol(name, bin) |
| 162 | return nil |
| 163 | } |