William Kurkian | ea86948 | 2019-04-09 15:16:11 -0400 | [diff] [blame] | 1 | package sarama |
| 2 | |
| 3 | type OffsetFetchResponseBlock struct { |
| 4 | Offset int64 |
| 5 | LeaderEpoch int32 |
| 6 | Metadata string |
| 7 | Err KError |
| 8 | } |
| 9 | |
| 10 | func (b *OffsetFetchResponseBlock) decode(pd packetDecoder, version int16) (err error) { |
| 11 | b.Offset, err = pd.getInt64() |
| 12 | if err != nil { |
| 13 | return err |
| 14 | } |
| 15 | |
| 16 | if version >= 5 { |
| 17 | b.LeaderEpoch, err = pd.getInt32() |
| 18 | if err != nil { |
| 19 | return err |
| 20 | } |
| 21 | } |
| 22 | |
| 23 | b.Metadata, err = pd.getString() |
| 24 | if err != nil { |
| 25 | return err |
| 26 | } |
| 27 | |
| 28 | tmp, err := pd.getInt16() |
| 29 | if err != nil { |
| 30 | return err |
| 31 | } |
| 32 | b.Err = KError(tmp) |
| 33 | |
| 34 | return nil |
| 35 | } |
| 36 | |
| 37 | func (b *OffsetFetchResponseBlock) encode(pe packetEncoder, version int16) (err error) { |
| 38 | pe.putInt64(b.Offset) |
| 39 | |
| 40 | if version >= 5 { |
| 41 | pe.putInt32(b.LeaderEpoch) |
| 42 | } |
| 43 | |
| 44 | err = pe.putString(b.Metadata) |
| 45 | if err != nil { |
| 46 | return err |
| 47 | } |
| 48 | |
| 49 | pe.putInt16(int16(b.Err)) |
| 50 | |
| 51 | return nil |
| 52 | } |
| 53 | |
| 54 | type OffsetFetchResponse struct { |
| 55 | Version int16 |
| 56 | ThrottleTimeMs int32 |
| 57 | Blocks map[string]map[int32]*OffsetFetchResponseBlock |
| 58 | Err KError |
| 59 | } |
| 60 | |
| 61 | func (r *OffsetFetchResponse) encode(pe packetEncoder) error { |
| 62 | if r.Version >= 3 { |
| 63 | pe.putInt32(r.ThrottleTimeMs) |
| 64 | } |
| 65 | |
| 66 | if err := pe.putArrayLength(len(r.Blocks)); err != nil { |
| 67 | return err |
| 68 | } |
| 69 | for topic, partitions := range r.Blocks { |
| 70 | if err := pe.putString(topic); err != nil { |
| 71 | return err |
| 72 | } |
| 73 | if err := pe.putArrayLength(len(partitions)); err != nil { |
| 74 | return err |
| 75 | } |
| 76 | for partition, block := range partitions { |
| 77 | pe.putInt32(partition) |
| 78 | if err := block.encode(pe, r.Version); err != nil { |
| 79 | return err |
| 80 | } |
| 81 | } |
| 82 | } |
| 83 | if r.Version >= 2 { |
| 84 | pe.putInt16(int16(r.Err)) |
| 85 | } |
| 86 | return nil |
| 87 | } |
| 88 | |
| 89 | func (r *OffsetFetchResponse) decode(pd packetDecoder, version int16) (err error) { |
| 90 | r.Version = version |
| 91 | |
| 92 | if version >= 3 { |
| 93 | r.ThrottleTimeMs, err = pd.getInt32() |
| 94 | if err != nil { |
| 95 | return err |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | numTopics, err := pd.getArrayLength() |
| 100 | if err != nil { |
| 101 | return err |
| 102 | } |
| 103 | |
| 104 | if numTopics > 0 { |
| 105 | r.Blocks = make(map[string]map[int32]*OffsetFetchResponseBlock, numTopics) |
| 106 | for i := 0; i < numTopics; i++ { |
| 107 | name, err := pd.getString() |
| 108 | if err != nil { |
| 109 | return err |
| 110 | } |
| 111 | |
| 112 | numBlocks, err := pd.getArrayLength() |
| 113 | if err != nil { |
| 114 | return err |
| 115 | } |
| 116 | |
| 117 | if numBlocks == 0 { |
| 118 | r.Blocks[name] = nil |
| 119 | continue |
| 120 | } |
| 121 | r.Blocks[name] = make(map[int32]*OffsetFetchResponseBlock, numBlocks) |
| 122 | |
| 123 | for j := 0; j < numBlocks; j++ { |
| 124 | id, err := pd.getInt32() |
| 125 | if err != nil { |
| 126 | return err |
| 127 | } |
| 128 | |
| 129 | block := new(OffsetFetchResponseBlock) |
| 130 | err = block.decode(pd, version) |
| 131 | if err != nil { |
| 132 | return err |
| 133 | } |
| 134 | r.Blocks[name][id] = block |
| 135 | } |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | if version >= 2 { |
| 140 | kerr, err := pd.getInt16() |
| 141 | if err != nil { |
| 142 | return err |
| 143 | } |
| 144 | r.Err = KError(kerr) |
| 145 | } |
| 146 | |
| 147 | return nil |
| 148 | } |
| 149 | |
| 150 | func (r *OffsetFetchResponse) key() int16 { |
| 151 | return 9 |
| 152 | } |
| 153 | |
| 154 | func (r *OffsetFetchResponse) version() int16 { |
| 155 | return r.Version |
| 156 | } |
| 157 | |
| 158 | func (r *OffsetFetchResponse) requiredVersion() KafkaVersion { |
| 159 | switch r.Version { |
| 160 | case 1: |
| 161 | return V0_8_2_0 |
| 162 | case 2: |
| 163 | return V0_10_2_0 |
| 164 | case 3: |
| 165 | return V0_11_0_0 |
| 166 | case 4: |
| 167 | return V2_0_0_0 |
| 168 | case 5: |
| 169 | return V2_1_0_0 |
| 170 | default: |
| 171 | return MinVersion |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | func (r *OffsetFetchResponse) GetBlock(topic string, partition int32) *OffsetFetchResponseBlock { |
| 176 | if r.Blocks == nil { |
| 177 | return nil |
| 178 | } |
| 179 | |
| 180 | if r.Blocks[topic] == nil { |
| 181 | return nil |
| 182 | } |
| 183 | |
| 184 | return r.Blocks[topic][partition] |
| 185 | } |
| 186 | |
| 187 | func (r *OffsetFetchResponse) AddBlock(topic string, partition int32, block *OffsetFetchResponseBlock) { |
| 188 | if r.Blocks == nil { |
| 189 | r.Blocks = make(map[string]map[int32]*OffsetFetchResponseBlock) |
| 190 | } |
| 191 | partitions := r.Blocks[topic] |
| 192 | if partitions == nil { |
| 193 | partitions = make(map[int32]*OffsetFetchResponseBlock) |
| 194 | r.Blocks[topic] = partitions |
| 195 | } |
| 196 | partitions[partition] = block |
| 197 | } |