Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | |
| 20 | package thrift |
| 21 | |
| 22 | import ( |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 23 | "context" |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 24 | "encoding/binary" |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 25 | "errors" |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 26 | "fmt" |
| 27 | "io" |
| 28 | "math" |
| 29 | ) |
| 30 | |
| 31 | const ( |
| 32 | COMPACT_PROTOCOL_ID = 0x082 |
| 33 | COMPACT_VERSION = 1 |
| 34 | COMPACT_VERSION_MASK = 0x1f |
| 35 | COMPACT_TYPE_MASK = 0x0E0 |
| 36 | COMPACT_TYPE_BITS = 0x07 |
| 37 | COMPACT_TYPE_SHIFT_AMOUNT = 5 |
| 38 | ) |
| 39 | |
| 40 | type tCompactType byte |
| 41 | |
| 42 | const ( |
| 43 | COMPACT_BOOLEAN_TRUE = 0x01 |
| 44 | COMPACT_BOOLEAN_FALSE = 0x02 |
| 45 | COMPACT_BYTE = 0x03 |
| 46 | COMPACT_I16 = 0x04 |
| 47 | COMPACT_I32 = 0x05 |
| 48 | COMPACT_I64 = 0x06 |
| 49 | COMPACT_DOUBLE = 0x07 |
| 50 | COMPACT_BINARY = 0x08 |
| 51 | COMPACT_LIST = 0x09 |
| 52 | COMPACT_SET = 0x0A |
| 53 | COMPACT_MAP = 0x0B |
| 54 | COMPACT_STRUCT = 0x0C |
| 55 | ) |
| 56 | |
| 57 | var ( |
| 58 | ttypeToCompactType map[TType]tCompactType |
| 59 | ) |
| 60 | |
| 61 | func init() { |
| 62 | ttypeToCompactType = map[TType]tCompactType{ |
| 63 | STOP: STOP, |
| 64 | BOOL: COMPACT_BOOLEAN_TRUE, |
| 65 | BYTE: COMPACT_BYTE, |
| 66 | I16: COMPACT_I16, |
| 67 | I32: COMPACT_I32, |
| 68 | I64: COMPACT_I64, |
| 69 | DOUBLE: COMPACT_DOUBLE, |
| 70 | STRING: COMPACT_BINARY, |
| 71 | LIST: COMPACT_LIST, |
| 72 | SET: COMPACT_SET, |
| 73 | MAP: COMPACT_MAP, |
| 74 | STRUCT: COMPACT_STRUCT, |
| 75 | } |
| 76 | } |
| 77 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 78 | type TCompactProtocolFactory struct { |
| 79 | cfg *TConfiguration |
| 80 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 81 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 82 | // Deprecated: Use NewTCompactProtocolFactoryConf instead. |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 83 | func NewTCompactProtocolFactory() *TCompactProtocolFactory { |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 84 | return NewTCompactProtocolFactoryConf(&TConfiguration{ |
| 85 | noPropagation: true, |
| 86 | }) |
| 87 | } |
| 88 | |
| 89 | func NewTCompactProtocolFactoryConf(conf *TConfiguration) *TCompactProtocolFactory { |
| 90 | return &TCompactProtocolFactory{ |
| 91 | cfg: conf, |
| 92 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | func (p *TCompactProtocolFactory) GetProtocol(trans TTransport) TProtocol { |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 96 | return NewTCompactProtocolConf(trans, p.cfg) |
| 97 | } |
| 98 | |
| 99 | func (p *TCompactProtocolFactory) SetTConfiguration(conf *TConfiguration) { |
| 100 | p.cfg = conf |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | type TCompactProtocol struct { |
| 104 | trans TRichTransport |
| 105 | origTransport TTransport |
| 106 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 107 | cfg *TConfiguration |
| 108 | |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 109 | // Used to keep track of the last field for the current and previous structs, |
| 110 | // so we can do the delta stuff. |
| 111 | lastField []int |
| 112 | lastFieldId int |
| 113 | |
| 114 | // If we encounter a boolean field begin, save the TField here so it can |
| 115 | // have the value incorporated. |
| 116 | booleanFieldName string |
| 117 | booleanFieldId int16 |
| 118 | booleanFieldPending bool |
| 119 | |
| 120 | // If we read a field header, and it's a boolean field, save the boolean |
| 121 | // value here so that readBool can use it. |
| 122 | boolValue bool |
| 123 | boolValueIsNotNull bool |
| 124 | buffer [64]byte |
| 125 | } |
| 126 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 127 | // Deprecated: Use NewTCompactProtocolConf instead. |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 128 | func NewTCompactProtocol(trans TTransport) *TCompactProtocol { |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 129 | return NewTCompactProtocolConf(trans, &TConfiguration{ |
| 130 | noPropagation: true, |
| 131 | }) |
| 132 | } |
| 133 | |
| 134 | func NewTCompactProtocolConf(trans TTransport, conf *TConfiguration) *TCompactProtocol { |
| 135 | PropagateTConfiguration(trans, conf) |
| 136 | p := &TCompactProtocol{ |
| 137 | origTransport: trans, |
| 138 | cfg: conf, |
| 139 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 140 | if et, ok := trans.(TRichTransport); ok { |
| 141 | p.trans = et |
| 142 | } else { |
| 143 | p.trans = NewTRichTransport(trans) |
| 144 | } |
| 145 | |
| 146 | return p |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | // |
| 150 | // Public Writing methods. |
| 151 | // |
| 152 | |
| 153 | // Write a message header to the wire. Compact Protocol messages contain the |
| 154 | // protocol version so we can migrate forwards in the future if need be. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 155 | func (p *TCompactProtocol) WriteMessageBegin(ctx context.Context, name string, typeId TMessageType, seqid int32) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 156 | err := p.writeByteDirect(COMPACT_PROTOCOL_ID) |
| 157 | if err != nil { |
| 158 | return NewTProtocolException(err) |
| 159 | } |
| 160 | err = p.writeByteDirect((COMPACT_VERSION & COMPACT_VERSION_MASK) | ((byte(typeId) << COMPACT_TYPE_SHIFT_AMOUNT) & COMPACT_TYPE_MASK)) |
| 161 | if err != nil { |
| 162 | return NewTProtocolException(err) |
| 163 | } |
| 164 | _, err = p.writeVarint32(seqid) |
| 165 | if err != nil { |
| 166 | return NewTProtocolException(err) |
| 167 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 168 | e := p.WriteString(ctx, name) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 169 | return e |
| 170 | |
| 171 | } |
| 172 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 173 | func (p *TCompactProtocol) WriteMessageEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 174 | |
| 175 | // Write a struct begin. This doesn't actually put anything on the wire. We |
| 176 | // use it as an opportunity to put special placeholder markers on the field |
| 177 | // stack so we can get the field id deltas correct. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 178 | func (p *TCompactProtocol) WriteStructBegin(ctx context.Context, name string) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 179 | p.lastField = append(p.lastField, p.lastFieldId) |
| 180 | p.lastFieldId = 0 |
| 181 | return nil |
| 182 | } |
| 183 | |
| 184 | // Write a struct end. This doesn't actually put anything on the wire. We use |
| 185 | // this as an opportunity to pop the last field from the current struct off |
| 186 | // of the field stack. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 187 | func (p *TCompactProtocol) WriteStructEnd(ctx context.Context) error { |
| 188 | if len(p.lastField) <= 0 { |
| 189 | return NewTProtocolExceptionWithType(INVALID_DATA, errors.New("WriteStructEnd called without matching WriteStructBegin call before")) |
| 190 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 191 | p.lastFieldId = p.lastField[len(p.lastField)-1] |
| 192 | p.lastField = p.lastField[:len(p.lastField)-1] |
| 193 | return nil |
| 194 | } |
| 195 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 196 | func (p *TCompactProtocol) WriteFieldBegin(ctx context.Context, name string, typeId TType, id int16) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 197 | if typeId == BOOL { |
| 198 | // we want to possibly include the value, so we'll wait. |
| 199 | p.booleanFieldName, p.booleanFieldId, p.booleanFieldPending = name, id, true |
| 200 | return nil |
| 201 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 202 | _, err := p.writeFieldBeginInternal(ctx, name, typeId, id, 0xFF) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 203 | return NewTProtocolException(err) |
| 204 | } |
| 205 | |
| 206 | // The workhorse of writeFieldBegin. It has the option of doing a |
| 207 | // 'type override' of the type header. This is used specifically in the |
| 208 | // boolean field case. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 209 | func (p *TCompactProtocol) writeFieldBeginInternal(ctx context.Context, name string, typeId TType, id int16, typeOverride byte) (int, error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 210 | // short lastField = lastField_.pop(); |
| 211 | |
| 212 | // if there's a type override, use that. |
| 213 | var typeToWrite byte |
| 214 | if typeOverride == 0xFF { |
| 215 | typeToWrite = byte(p.getCompactType(typeId)) |
| 216 | } else { |
| 217 | typeToWrite = typeOverride |
| 218 | } |
| 219 | // check if we can use delta encoding for the field id |
| 220 | fieldId := int(id) |
| 221 | written := 0 |
| 222 | if fieldId > p.lastFieldId && fieldId-p.lastFieldId <= 15 { |
| 223 | // write them together |
| 224 | err := p.writeByteDirect(byte((fieldId-p.lastFieldId)<<4) | typeToWrite) |
| 225 | if err != nil { |
| 226 | return 0, err |
| 227 | } |
| 228 | } else { |
| 229 | // write them separate |
| 230 | err := p.writeByteDirect(typeToWrite) |
| 231 | if err != nil { |
| 232 | return 0, err |
| 233 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 234 | err = p.WriteI16(ctx, id) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 235 | written = 1 + 2 |
| 236 | if err != nil { |
| 237 | return 0, err |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | p.lastFieldId = fieldId |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 242 | return written, nil |
| 243 | } |
| 244 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 245 | func (p *TCompactProtocol) WriteFieldEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 246 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 247 | func (p *TCompactProtocol) WriteFieldStop(ctx context.Context) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 248 | err := p.writeByteDirect(STOP) |
| 249 | return NewTProtocolException(err) |
| 250 | } |
| 251 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 252 | func (p *TCompactProtocol) WriteMapBegin(ctx context.Context, keyType TType, valueType TType, size int) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 253 | if size == 0 { |
| 254 | err := p.writeByteDirect(0) |
| 255 | return NewTProtocolException(err) |
| 256 | } |
| 257 | _, err := p.writeVarint32(int32(size)) |
| 258 | if err != nil { |
| 259 | return NewTProtocolException(err) |
| 260 | } |
| 261 | err = p.writeByteDirect(byte(p.getCompactType(keyType))<<4 | byte(p.getCompactType(valueType))) |
| 262 | return NewTProtocolException(err) |
| 263 | } |
| 264 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 265 | func (p *TCompactProtocol) WriteMapEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 266 | |
| 267 | // Write a list header. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 268 | func (p *TCompactProtocol) WriteListBegin(ctx context.Context, elemType TType, size int) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 269 | _, err := p.writeCollectionBegin(elemType, size) |
| 270 | return NewTProtocolException(err) |
| 271 | } |
| 272 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 273 | func (p *TCompactProtocol) WriteListEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 274 | |
| 275 | // Write a set header. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 276 | func (p *TCompactProtocol) WriteSetBegin(ctx context.Context, elemType TType, size int) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 277 | _, err := p.writeCollectionBegin(elemType, size) |
| 278 | return NewTProtocolException(err) |
| 279 | } |
| 280 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 281 | func (p *TCompactProtocol) WriteSetEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 282 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 283 | func (p *TCompactProtocol) WriteBool(ctx context.Context, value bool) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 284 | v := byte(COMPACT_BOOLEAN_FALSE) |
| 285 | if value { |
| 286 | v = byte(COMPACT_BOOLEAN_TRUE) |
| 287 | } |
| 288 | if p.booleanFieldPending { |
| 289 | // we haven't written the field header yet |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 290 | _, err := p.writeFieldBeginInternal(ctx, p.booleanFieldName, BOOL, p.booleanFieldId, v) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 291 | p.booleanFieldPending = false |
| 292 | return NewTProtocolException(err) |
| 293 | } |
| 294 | // we're not part of a field, so just write the value. |
| 295 | err := p.writeByteDirect(v) |
| 296 | return NewTProtocolException(err) |
| 297 | } |
| 298 | |
| 299 | // Write a byte. Nothing to see here! |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 300 | func (p *TCompactProtocol) WriteByte(ctx context.Context, value int8) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 301 | err := p.writeByteDirect(byte(value)) |
| 302 | return NewTProtocolException(err) |
| 303 | } |
| 304 | |
| 305 | // Write an I16 as a zigzag varint. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 306 | func (p *TCompactProtocol) WriteI16(ctx context.Context, value int16) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 307 | _, err := p.writeVarint32(p.int32ToZigzag(int32(value))) |
| 308 | return NewTProtocolException(err) |
| 309 | } |
| 310 | |
| 311 | // Write an i32 as a zigzag varint. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 312 | func (p *TCompactProtocol) WriteI32(ctx context.Context, value int32) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 313 | _, err := p.writeVarint32(p.int32ToZigzag(value)) |
| 314 | return NewTProtocolException(err) |
| 315 | } |
| 316 | |
| 317 | // Write an i64 as a zigzag varint. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 318 | func (p *TCompactProtocol) WriteI64(ctx context.Context, value int64) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 319 | _, err := p.writeVarint64(p.int64ToZigzag(value)) |
| 320 | return NewTProtocolException(err) |
| 321 | } |
| 322 | |
| 323 | // Write a double to the wire as 8 bytes. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 324 | func (p *TCompactProtocol) WriteDouble(ctx context.Context, value float64) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 325 | buf := p.buffer[0:8] |
| 326 | binary.LittleEndian.PutUint64(buf, math.Float64bits(value)) |
| 327 | _, err := p.trans.Write(buf) |
| 328 | return NewTProtocolException(err) |
| 329 | } |
| 330 | |
| 331 | // Write a string to the wire with a varint size preceding. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 332 | func (p *TCompactProtocol) WriteString(ctx context.Context, value string) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 333 | _, e := p.writeVarint32(int32(len(value))) |
| 334 | if e != nil { |
| 335 | return NewTProtocolException(e) |
| 336 | } |
| 337 | if len(value) > 0 { |
| 338 | } |
| 339 | _, e = p.trans.WriteString(value) |
| 340 | return e |
| 341 | } |
| 342 | |
| 343 | // Write a byte array, using a varint for the size. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 344 | func (p *TCompactProtocol) WriteBinary(ctx context.Context, bin []byte) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 345 | _, e := p.writeVarint32(int32(len(bin))) |
| 346 | if e != nil { |
| 347 | return NewTProtocolException(e) |
| 348 | } |
| 349 | if len(bin) > 0 { |
| 350 | _, e = p.trans.Write(bin) |
| 351 | return NewTProtocolException(e) |
| 352 | } |
| 353 | return nil |
| 354 | } |
| 355 | |
| 356 | // |
| 357 | // Reading methods. |
| 358 | // |
| 359 | |
| 360 | // Read a message header. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 361 | func (p *TCompactProtocol) ReadMessageBegin(ctx context.Context) (name string, typeId TMessageType, seqId int32, err error) { |
| 362 | var protocolId byte |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 363 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 364 | _, deadlineSet := ctx.Deadline() |
| 365 | for { |
| 366 | protocolId, err = p.readByteDirect() |
| 367 | if deadlineSet && isTimeoutError(err) && ctx.Err() == nil { |
| 368 | // keep retrying I/O timeout errors since we still have |
| 369 | // time left |
| 370 | continue |
| 371 | } |
| 372 | // For anything else, don't retry |
| 373 | break |
| 374 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 375 | if err != nil { |
| 376 | return |
| 377 | } |
| 378 | |
| 379 | if protocolId != COMPACT_PROTOCOL_ID { |
| 380 | e := fmt.Errorf("Expected protocol id %02x but got %02x", COMPACT_PROTOCOL_ID, protocolId) |
| 381 | return "", typeId, seqId, NewTProtocolExceptionWithType(BAD_VERSION, e) |
| 382 | } |
| 383 | |
| 384 | versionAndType, err := p.readByteDirect() |
| 385 | if err != nil { |
| 386 | return |
| 387 | } |
| 388 | |
| 389 | version := versionAndType & COMPACT_VERSION_MASK |
| 390 | typeId = TMessageType((versionAndType >> COMPACT_TYPE_SHIFT_AMOUNT) & COMPACT_TYPE_BITS) |
| 391 | if version != COMPACT_VERSION { |
| 392 | e := fmt.Errorf("Expected version %02x but got %02x", COMPACT_VERSION, version) |
| 393 | err = NewTProtocolExceptionWithType(BAD_VERSION, e) |
| 394 | return |
| 395 | } |
| 396 | seqId, e := p.readVarint32() |
| 397 | if e != nil { |
| 398 | err = NewTProtocolException(e) |
| 399 | return |
| 400 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 401 | name, err = p.ReadString(ctx) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 402 | return |
| 403 | } |
| 404 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 405 | func (p *TCompactProtocol) ReadMessageEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 406 | |
| 407 | // Read a struct begin. There's nothing on the wire for this, but it is our |
| 408 | // opportunity to push a new struct begin marker onto the field stack. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 409 | func (p *TCompactProtocol) ReadStructBegin(ctx context.Context) (name string, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 410 | p.lastField = append(p.lastField, p.lastFieldId) |
| 411 | p.lastFieldId = 0 |
| 412 | return |
| 413 | } |
| 414 | |
| 415 | // Doesn't actually consume any wire data, just removes the last field for |
| 416 | // this struct from the field stack. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 417 | func (p *TCompactProtocol) ReadStructEnd(ctx context.Context) error { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 418 | // consume the last field we read off the wire. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 419 | if len(p.lastField) <= 0 { |
| 420 | return NewTProtocolExceptionWithType(INVALID_DATA, errors.New("ReadStructEnd called without matching ReadStructBegin call before")) |
| 421 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 422 | p.lastFieldId = p.lastField[len(p.lastField)-1] |
| 423 | p.lastField = p.lastField[:len(p.lastField)-1] |
| 424 | return nil |
| 425 | } |
| 426 | |
| 427 | // Read a field header off the wire. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 428 | func (p *TCompactProtocol) ReadFieldBegin(ctx context.Context) (name string, typeId TType, id int16, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 429 | t, err := p.readByteDirect() |
| 430 | if err != nil { |
| 431 | return |
| 432 | } |
| 433 | |
| 434 | // if it's a stop, then we can return immediately, as the struct is over. |
| 435 | if (t & 0x0f) == STOP { |
| 436 | return "", STOP, 0, nil |
| 437 | } |
| 438 | |
| 439 | // mask off the 4 MSB of the type header. it could contain a field id delta. |
| 440 | modifier := int16((t & 0xf0) >> 4) |
| 441 | if modifier == 0 { |
| 442 | // not a delta. look ahead for the zigzag varint field id. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 443 | id, err = p.ReadI16(ctx) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 444 | if err != nil { |
| 445 | return |
| 446 | } |
| 447 | } else { |
| 448 | // has a delta. add the delta to the last read field id. |
| 449 | id = int16(p.lastFieldId) + modifier |
| 450 | } |
| 451 | typeId, e := p.getTType(tCompactType(t & 0x0f)) |
| 452 | if e != nil { |
| 453 | err = NewTProtocolException(e) |
| 454 | return |
| 455 | } |
| 456 | |
| 457 | // if this happens to be a boolean field, the value is encoded in the type |
| 458 | if p.isBoolType(t) { |
| 459 | // save the boolean value in a special instance variable. |
| 460 | p.boolValue = (byte(t)&0x0f == COMPACT_BOOLEAN_TRUE) |
| 461 | p.boolValueIsNotNull = true |
| 462 | } |
| 463 | |
| 464 | // push the new field onto the field stack so we can keep the deltas going. |
| 465 | p.lastFieldId = int(id) |
| 466 | return |
| 467 | } |
| 468 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 469 | func (p *TCompactProtocol) ReadFieldEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 470 | |
| 471 | // Read a map header off the wire. If the size is zero, skip reading the key |
| 472 | // and value type. This means that 0-length maps will yield TMaps without the |
| 473 | // "correct" types. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 474 | func (p *TCompactProtocol) ReadMapBegin(ctx context.Context) (keyType TType, valueType TType, size int, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 475 | size32, e := p.readVarint32() |
| 476 | if e != nil { |
| 477 | err = NewTProtocolException(e) |
| 478 | return |
| 479 | } |
| 480 | if size32 < 0 { |
| 481 | err = invalidDataLength |
| 482 | return |
| 483 | } |
| 484 | size = int(size32) |
| 485 | |
| 486 | keyAndValueType := byte(STOP) |
| 487 | if size != 0 { |
| 488 | keyAndValueType, err = p.readByteDirect() |
| 489 | if err != nil { |
| 490 | return |
| 491 | } |
| 492 | } |
| 493 | keyType, _ = p.getTType(tCompactType(keyAndValueType >> 4)) |
| 494 | valueType, _ = p.getTType(tCompactType(keyAndValueType & 0xf)) |
| 495 | return |
| 496 | } |
| 497 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 498 | func (p *TCompactProtocol) ReadMapEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 499 | |
| 500 | // Read a list header off the wire. If the list size is 0-14, the size will |
| 501 | // be packed into the element type header. If it's a longer list, the 4 MSB |
| 502 | // of the element type header will be 0xF, and a varint will follow with the |
| 503 | // true size. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 504 | func (p *TCompactProtocol) ReadListBegin(ctx context.Context) (elemType TType, size int, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 505 | size_and_type, err := p.readByteDirect() |
| 506 | if err != nil { |
| 507 | return |
| 508 | } |
| 509 | size = int((size_and_type >> 4) & 0x0f) |
| 510 | if size == 15 { |
| 511 | size2, e := p.readVarint32() |
| 512 | if e != nil { |
| 513 | err = NewTProtocolException(e) |
| 514 | return |
| 515 | } |
| 516 | if size2 < 0 { |
| 517 | err = invalidDataLength |
| 518 | return |
| 519 | } |
| 520 | size = int(size2) |
| 521 | } |
| 522 | elemType, e := p.getTType(tCompactType(size_and_type)) |
| 523 | if e != nil { |
| 524 | err = NewTProtocolException(e) |
| 525 | return |
| 526 | } |
| 527 | return |
| 528 | } |
| 529 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 530 | func (p *TCompactProtocol) ReadListEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 531 | |
| 532 | // Read a set header off the wire. If the set size is 0-14, the size will |
| 533 | // be packed into the element type header. If it's a longer set, the 4 MSB |
| 534 | // of the element type header will be 0xF, and a varint will follow with the |
| 535 | // true size. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 536 | func (p *TCompactProtocol) ReadSetBegin(ctx context.Context) (elemType TType, size int, err error) { |
| 537 | return p.ReadListBegin(ctx) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 538 | } |
| 539 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 540 | func (p *TCompactProtocol) ReadSetEnd(ctx context.Context) error { return nil } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 541 | |
| 542 | // Read a boolean off the wire. If this is a boolean field, the value should |
| 543 | // already have been read during readFieldBegin, so we'll just consume the |
| 544 | // pre-stored value. Otherwise, read a byte. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 545 | func (p *TCompactProtocol) ReadBool(ctx context.Context) (value bool, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 546 | if p.boolValueIsNotNull { |
| 547 | p.boolValueIsNotNull = false |
| 548 | return p.boolValue, nil |
| 549 | } |
| 550 | v, err := p.readByteDirect() |
| 551 | return v == COMPACT_BOOLEAN_TRUE, err |
| 552 | } |
| 553 | |
| 554 | // Read a single byte off the wire. Nothing interesting here. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 555 | func (p *TCompactProtocol) ReadByte(ctx context.Context) (int8, error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 556 | v, err := p.readByteDirect() |
| 557 | if err != nil { |
| 558 | return 0, NewTProtocolException(err) |
| 559 | } |
| 560 | return int8(v), err |
| 561 | } |
| 562 | |
| 563 | // Read an i16 from the wire as a zigzag varint. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 564 | func (p *TCompactProtocol) ReadI16(ctx context.Context) (value int16, err error) { |
| 565 | v, err := p.ReadI32(ctx) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 566 | return int16(v), err |
| 567 | } |
| 568 | |
| 569 | // Read an i32 from the wire as a zigzag varint. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 570 | func (p *TCompactProtocol) ReadI32(ctx context.Context) (value int32, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 571 | v, e := p.readVarint32() |
| 572 | if e != nil { |
| 573 | return 0, NewTProtocolException(e) |
| 574 | } |
| 575 | value = p.zigzagToInt32(v) |
| 576 | return value, nil |
| 577 | } |
| 578 | |
| 579 | // Read an i64 from the wire as a zigzag varint. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 580 | func (p *TCompactProtocol) ReadI64(ctx context.Context) (value int64, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 581 | v, e := p.readVarint64() |
| 582 | if e != nil { |
| 583 | return 0, NewTProtocolException(e) |
| 584 | } |
| 585 | value = p.zigzagToInt64(v) |
| 586 | return value, nil |
| 587 | } |
| 588 | |
| 589 | // No magic here - just read a double off the wire. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 590 | func (p *TCompactProtocol) ReadDouble(ctx context.Context) (value float64, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 591 | longBits := p.buffer[0:8] |
| 592 | _, e := io.ReadFull(p.trans, longBits) |
| 593 | if e != nil { |
| 594 | return 0.0, NewTProtocolException(e) |
| 595 | } |
| 596 | return math.Float64frombits(p.bytesToUint64(longBits)), nil |
| 597 | } |
| 598 | |
| 599 | // Reads a []byte (via readBinary), and then UTF-8 decodes it. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 600 | func (p *TCompactProtocol) ReadString(ctx context.Context) (value string, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 601 | length, e := p.readVarint32() |
| 602 | if e != nil { |
| 603 | return "", NewTProtocolException(e) |
| 604 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 605 | err = checkSizeForProtocol(length, p.cfg) |
| 606 | if err != nil { |
| 607 | return |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 608 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 609 | if length == 0 { |
| 610 | return "", nil |
| 611 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 612 | if length < int32(len(p.buffer)) { |
| 613 | // Avoid allocation on small reads |
| 614 | buf := p.buffer[:length] |
| 615 | read, e := io.ReadFull(p.trans, buf) |
| 616 | return string(buf[:read]), NewTProtocolException(e) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 617 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 618 | |
| 619 | buf, e := safeReadBytes(length, p.trans) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 620 | return string(buf), NewTProtocolException(e) |
| 621 | } |
| 622 | |
| 623 | // Read a []byte from the wire. |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 624 | func (p *TCompactProtocol) ReadBinary(ctx context.Context) (value []byte, err error) { |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 625 | length, e := p.readVarint32() |
| 626 | if e != nil { |
| 627 | return nil, NewTProtocolException(e) |
| 628 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 629 | err = checkSizeForProtocol(length, p.cfg) |
| 630 | if err != nil { |
| 631 | return |
| 632 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 633 | if length == 0 { |
| 634 | return []byte{}, nil |
| 635 | } |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 636 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 637 | buf, e := safeReadBytes(length, p.trans) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 638 | return buf, NewTProtocolException(e) |
| 639 | } |
| 640 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 641 | func (p *TCompactProtocol) Flush(ctx context.Context) (err error) { |
| 642 | return NewTProtocolException(p.trans.Flush(ctx)) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 643 | } |
| 644 | |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 645 | func (p *TCompactProtocol) Skip(ctx context.Context, fieldType TType) (err error) { |
| 646 | return SkipDefaultDepth(ctx, p, fieldType) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | func (p *TCompactProtocol) Transport() TTransport { |
| 650 | return p.origTransport |
| 651 | } |
| 652 | |
| 653 | // |
| 654 | // Internal writing methods |
| 655 | // |
| 656 | |
| 657 | // Abstract method for writing the start of lists and sets. List and sets on |
| 658 | // the wire differ only by the type indicator. |
| 659 | func (p *TCompactProtocol) writeCollectionBegin(elemType TType, size int) (int, error) { |
| 660 | if size <= 14 { |
| 661 | return 1, p.writeByteDirect(byte(int32(size<<4) | int32(p.getCompactType(elemType)))) |
| 662 | } |
| 663 | err := p.writeByteDirect(0xf0 | byte(p.getCompactType(elemType))) |
| 664 | if err != nil { |
| 665 | return 0, err |
| 666 | } |
| 667 | m, err := p.writeVarint32(int32(size)) |
| 668 | return 1 + m, err |
| 669 | } |
| 670 | |
| 671 | // Write an i32 as a varint. Results in 1-5 bytes on the wire. |
| 672 | // TODO(pomack): make a permanent buffer like writeVarint64? |
| 673 | func (p *TCompactProtocol) writeVarint32(n int32) (int, error) { |
| 674 | i32buf := p.buffer[0:5] |
| 675 | idx := 0 |
| 676 | for { |
| 677 | if (n & ^0x7F) == 0 { |
| 678 | i32buf[idx] = byte(n) |
| 679 | idx++ |
| 680 | // p.writeByteDirect(byte(n)); |
| 681 | break |
| 682 | // return; |
| 683 | } else { |
| 684 | i32buf[idx] = byte((n & 0x7F) | 0x80) |
| 685 | idx++ |
| 686 | // p.writeByteDirect(byte(((n & 0x7F) | 0x80))); |
| 687 | u := uint32(n) |
| 688 | n = int32(u >> 7) |
| 689 | } |
| 690 | } |
| 691 | return p.trans.Write(i32buf[0:idx]) |
| 692 | } |
| 693 | |
| 694 | // Write an i64 as a varint. Results in 1-10 bytes on the wire. |
| 695 | func (p *TCompactProtocol) writeVarint64(n int64) (int, error) { |
| 696 | varint64out := p.buffer[0:10] |
| 697 | idx := 0 |
| 698 | for { |
| 699 | if (n & ^0x7F) == 0 { |
| 700 | varint64out[idx] = byte(n) |
| 701 | idx++ |
| 702 | break |
| 703 | } else { |
| 704 | varint64out[idx] = byte((n & 0x7F) | 0x80) |
| 705 | idx++ |
| 706 | u := uint64(n) |
| 707 | n = int64(u >> 7) |
| 708 | } |
| 709 | } |
| 710 | return p.trans.Write(varint64out[0:idx]) |
| 711 | } |
| 712 | |
| 713 | // Convert l into a zigzag long. This allows negative numbers to be |
| 714 | // represented compactly as a varint. |
| 715 | func (p *TCompactProtocol) int64ToZigzag(l int64) int64 { |
| 716 | return (l << 1) ^ (l >> 63) |
| 717 | } |
| 718 | |
| 719 | // Convert l into a zigzag long. This allows negative numbers to be |
| 720 | // represented compactly as a varint. |
| 721 | func (p *TCompactProtocol) int32ToZigzag(n int32) int32 { |
| 722 | return (n << 1) ^ (n >> 31) |
| 723 | } |
| 724 | |
| 725 | func (p *TCompactProtocol) fixedUint64ToBytes(n uint64, buf []byte) { |
| 726 | binary.LittleEndian.PutUint64(buf, n) |
| 727 | } |
| 728 | |
| 729 | func (p *TCompactProtocol) fixedInt64ToBytes(n int64, buf []byte) { |
| 730 | binary.LittleEndian.PutUint64(buf, uint64(n)) |
| 731 | } |
| 732 | |
| 733 | // Writes a byte without any possibility of all that field header nonsense. |
| 734 | // Used internally by other writing methods that know they need to write a byte. |
| 735 | func (p *TCompactProtocol) writeByteDirect(b byte) error { |
| 736 | return p.trans.WriteByte(b) |
| 737 | } |
| 738 | |
| 739 | // Writes a byte without any possibility of all that field header nonsense. |
| 740 | func (p *TCompactProtocol) writeIntAsByteDirect(n int) (int, error) { |
| 741 | return 1, p.writeByteDirect(byte(n)) |
| 742 | } |
| 743 | |
| 744 | // |
| 745 | // Internal reading methods |
| 746 | // |
| 747 | |
| 748 | // Read an i32 from the wire as a varint. The MSB of each byte is set |
| 749 | // if there is another byte to follow. This can read up to 5 bytes. |
| 750 | func (p *TCompactProtocol) readVarint32() (int32, error) { |
| 751 | // if the wire contains the right stuff, this will just truncate the i64 we |
| 752 | // read and get us the right sign. |
| 753 | v, err := p.readVarint64() |
| 754 | return int32(v), err |
| 755 | } |
| 756 | |
| 757 | // Read an i64 from the wire as a proper varint. The MSB of each byte is set |
| 758 | // if there is another byte to follow. This can read up to 10 bytes. |
| 759 | func (p *TCompactProtocol) readVarint64() (int64, error) { |
| 760 | shift := uint(0) |
| 761 | result := int64(0) |
| 762 | for { |
| 763 | b, err := p.readByteDirect() |
| 764 | if err != nil { |
| 765 | return 0, err |
| 766 | } |
| 767 | result |= int64(b&0x7f) << shift |
| 768 | if (b & 0x80) != 0x80 { |
| 769 | break |
| 770 | } |
| 771 | shift += 7 |
| 772 | } |
| 773 | return result, nil |
| 774 | } |
| 775 | |
| 776 | // Read a byte, unlike ReadByte that reads Thrift-byte that is i8. |
| 777 | func (p *TCompactProtocol) readByteDirect() (byte, error) { |
| 778 | return p.trans.ReadByte() |
| 779 | } |
| 780 | |
| 781 | // |
| 782 | // encoding helpers |
| 783 | // |
| 784 | |
| 785 | // Convert from zigzag int to int. |
| 786 | func (p *TCompactProtocol) zigzagToInt32(n int32) int32 { |
| 787 | u := uint32(n) |
| 788 | return int32(u>>1) ^ -(n & 1) |
| 789 | } |
| 790 | |
| 791 | // Convert from zigzag long to long. |
| 792 | func (p *TCompactProtocol) zigzagToInt64(n int64) int64 { |
| 793 | u := uint64(n) |
| 794 | return int64(u>>1) ^ -(n & 1) |
| 795 | } |
| 796 | |
| 797 | // Note that it's important that the mask bytes are long literals, |
| 798 | // otherwise they'll default to ints, and when you shift an int left 56 bits, |
| 799 | // you just get a messed up int. |
| 800 | func (p *TCompactProtocol) bytesToInt64(b []byte) int64 { |
| 801 | return int64(binary.LittleEndian.Uint64(b)) |
| 802 | } |
| 803 | |
| 804 | // Note that it's important that the mask bytes are long literals, |
| 805 | // otherwise they'll default to ints, and when you shift an int left 56 bits, |
| 806 | // you just get a messed up int. |
| 807 | func (p *TCompactProtocol) bytesToUint64(b []byte) uint64 { |
| 808 | return binary.LittleEndian.Uint64(b) |
| 809 | } |
| 810 | |
| 811 | // |
| 812 | // type testing and converting |
| 813 | // |
| 814 | |
| 815 | func (p *TCompactProtocol) isBoolType(b byte) bool { |
| 816 | return (b&0x0f) == COMPACT_BOOLEAN_TRUE || (b&0x0f) == COMPACT_BOOLEAN_FALSE |
| 817 | } |
| 818 | |
| 819 | // Given a tCompactType constant, convert it to its corresponding |
| 820 | // TType value. |
| 821 | func (p *TCompactProtocol) getTType(t tCompactType) (TType, error) { |
| 822 | switch byte(t) & 0x0f { |
| 823 | case STOP: |
| 824 | return STOP, nil |
| 825 | case COMPACT_BOOLEAN_FALSE, COMPACT_BOOLEAN_TRUE: |
| 826 | return BOOL, nil |
| 827 | case COMPACT_BYTE: |
| 828 | return BYTE, nil |
| 829 | case COMPACT_I16: |
| 830 | return I16, nil |
| 831 | case COMPACT_I32: |
| 832 | return I32, nil |
| 833 | case COMPACT_I64: |
| 834 | return I64, nil |
| 835 | case COMPACT_DOUBLE: |
| 836 | return DOUBLE, nil |
| 837 | case COMPACT_BINARY: |
| 838 | return STRING, nil |
| 839 | case COMPACT_LIST: |
| 840 | return LIST, nil |
| 841 | case COMPACT_SET: |
| 842 | return SET, nil |
| 843 | case COMPACT_MAP: |
| 844 | return MAP, nil |
| 845 | case COMPACT_STRUCT: |
| 846 | return STRUCT, nil |
| 847 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 848 | return STOP, NewTProtocolException(fmt.Errorf("don't know what type: %v", t&0x0f)) |
Girish Gowdra | 631ef3d | 2020-06-15 10:45:52 -0700 | [diff] [blame] | 849 | } |
| 850 | |
| 851 | // Given a TType value, find the appropriate TCompactProtocol.Types constant. |
| 852 | func (p *TCompactProtocol) getCompactType(t TType) tCompactType { |
| 853 | return ttypeToCompactType[t] |
| 854 | } |
khenaidoo | 106c61a | 2021-08-11 18:05:46 -0400 | [diff] [blame] | 855 | |
| 856 | func (p *TCompactProtocol) SetTConfiguration(conf *TConfiguration) { |
| 857 | PropagateTConfiguration(p.trans, conf) |
| 858 | PropagateTConfiguration(p.origTransport, conf) |
| 859 | p.cfg = conf |
| 860 | } |
| 861 | |
| 862 | var ( |
| 863 | _ TConfigurationSetter = (*TCompactProtocolFactory)(nil) |
| 864 | _ TConfigurationSetter = (*TCompactProtocol)(nil) |
| 865 | ) |