Pragya Arya | 324337e | 2020-02-20 14:35:08 +0530 | [diff] [blame] | 1 | package sarama |
| 2 | |
| 3 | type offsetRequestBlock struct { |
| 4 | time int64 |
| 5 | maxOffsets int32 // Only used in version 0 |
| 6 | } |
| 7 | |
| 8 | func (b *offsetRequestBlock) encode(pe packetEncoder, version int16) error { |
| 9 | pe.putInt64(int64(b.time)) |
| 10 | if version == 0 { |
| 11 | pe.putInt32(b.maxOffsets) |
| 12 | } |
| 13 | |
| 14 | return nil |
| 15 | } |
| 16 | |
| 17 | func (b *offsetRequestBlock) decode(pd packetDecoder, version int16) (err error) { |
| 18 | if b.time, err = pd.getInt64(); err != nil { |
| 19 | return err |
| 20 | } |
| 21 | if version == 0 { |
| 22 | if b.maxOffsets, err = pd.getInt32(); err != nil { |
| 23 | return err |
| 24 | } |
| 25 | } |
| 26 | return nil |
| 27 | } |
| 28 | |
| 29 | type OffsetRequest struct { |
| 30 | Version int16 |
| 31 | replicaID int32 |
| 32 | isReplicaIDSet bool |
| 33 | blocks map[string]map[int32]*offsetRequestBlock |
| 34 | } |
| 35 | |
| 36 | func (r *OffsetRequest) encode(pe packetEncoder) error { |
| 37 | if r.isReplicaIDSet { |
| 38 | pe.putInt32(r.replicaID) |
| 39 | } else { |
| 40 | // default replica ID is always -1 for clients |
| 41 | pe.putInt32(-1) |
| 42 | } |
| 43 | |
| 44 | err := pe.putArrayLength(len(r.blocks)) |
| 45 | if err != nil { |
| 46 | return err |
| 47 | } |
| 48 | for topic, partitions := range r.blocks { |
| 49 | err = pe.putString(topic) |
| 50 | if err != nil { |
| 51 | return err |
| 52 | } |
| 53 | err = pe.putArrayLength(len(partitions)) |
| 54 | if err != nil { |
| 55 | return err |
| 56 | } |
| 57 | for partition, block := range partitions { |
| 58 | pe.putInt32(partition) |
| 59 | if err = block.encode(pe, r.Version); err != nil { |
| 60 | return err |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | return nil |
| 65 | } |
| 66 | |
| 67 | func (r *OffsetRequest) decode(pd packetDecoder, version int16) error { |
| 68 | r.Version = version |
| 69 | |
| 70 | replicaID, err := pd.getInt32() |
| 71 | if err != nil { |
| 72 | return err |
| 73 | } |
| 74 | if replicaID >= 0 { |
| 75 | r.SetReplicaID(replicaID) |
| 76 | } |
| 77 | |
| 78 | blockCount, err := pd.getArrayLength() |
| 79 | if err != nil { |
| 80 | return err |
| 81 | } |
| 82 | if blockCount == 0 { |
| 83 | return nil |
| 84 | } |
| 85 | r.blocks = make(map[string]map[int32]*offsetRequestBlock) |
| 86 | for i := 0; i < blockCount; i++ { |
| 87 | topic, err := pd.getString() |
| 88 | if err != nil { |
| 89 | return err |
| 90 | } |
| 91 | partitionCount, err := pd.getArrayLength() |
| 92 | if err != nil { |
| 93 | return err |
| 94 | } |
| 95 | r.blocks[topic] = make(map[int32]*offsetRequestBlock) |
| 96 | for j := 0; j < partitionCount; j++ { |
| 97 | partition, err := pd.getInt32() |
| 98 | if err != nil { |
| 99 | return err |
| 100 | } |
| 101 | block := &offsetRequestBlock{} |
| 102 | if err := block.decode(pd, version); err != nil { |
| 103 | return err |
| 104 | } |
| 105 | r.blocks[topic][partition] = block |
| 106 | } |
| 107 | } |
| 108 | return nil |
| 109 | } |
| 110 | |
| 111 | func (r *OffsetRequest) key() int16 { |
| 112 | return 2 |
| 113 | } |
| 114 | |
| 115 | func (r *OffsetRequest) version() int16 { |
| 116 | return r.Version |
| 117 | } |
| 118 | |
| 119 | func (r *OffsetRequest) requiredVersion() KafkaVersion { |
| 120 | switch r.Version { |
| 121 | case 1: |
| 122 | return V0_10_1_0 |
| 123 | default: |
| 124 | return MinVersion |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | func (r *OffsetRequest) SetReplicaID(id int32) { |
| 129 | r.replicaID = id |
| 130 | r.isReplicaIDSet = true |
| 131 | } |
| 132 | |
| 133 | func (r *OffsetRequest) ReplicaID() int32 { |
| 134 | if r.isReplicaIDSet { |
| 135 | return r.replicaID |
| 136 | } |
| 137 | return -1 |
| 138 | } |
| 139 | |
| 140 | func (r *OffsetRequest) AddBlock(topic string, partitionID int32, time int64, maxOffsets int32) { |
| 141 | if r.blocks == nil { |
| 142 | r.blocks = make(map[string]map[int32]*offsetRequestBlock) |
| 143 | } |
| 144 | |
| 145 | if r.blocks[topic] == nil { |
| 146 | r.blocks[topic] = make(map[int32]*offsetRequestBlock) |
| 147 | } |
| 148 | |
| 149 | tmp := new(offsetRequestBlock) |
| 150 | tmp.time = time |
| 151 | if r.Version == 0 { |
| 152 | tmp.maxOffsets = maxOffsets |
| 153 | } |
| 154 | |
| 155 | r.blocks[topic][partitionID] = tmp |
| 156 | } |