// Header write for write operations.
func (cmd *baseCommand) writeHeaderWithPolicy(policy *WritePolicy, readAttr int, writeAttr int, fieldCount int, operationCount int) {
// Set flags.
generation := int32(0)
infoAttr := 0
switch policy.RecordExistsAction {
case UPDATE:
case UPDATE_ONLY:
infoAttr |= _INFO3_UPDATE_ONLY
case REPLACE:
infoAttr |= _INFO3_CREATE_OR_REPLACE
case REPLACE_ONLY:
infoAttr |= _INFO3_REPLACE_ONLY
case CREATE_ONLY:
writeAttr |= _INFO2_CREATE_ONLY
}
switch policy.GenerationPolicy {
case NONE:
case EXPECT_GEN_EQUAL:
generation = policy.Generation
writeAttr |= _INFO2_GENERATION
case EXPECT_GEN_GT:
generation = policy.Generation
writeAttr |= _INFO2_GENERATION_GT
}
if policy.CommitLevel == COMMIT_MASTER {
infoAttr |= _INFO3_COMMIT_MASTER
}
if policy.ConsistencyLevel == CONSISTENCY_ALL {
readAttr |= _INFO1_CONSISTENCY_ALL
}
// Write all header data except total size which must be written last.
cmd.dataBuffer[8] = _MSG_REMAINING_HEADER_SIZE // Message header length.
cmd.dataBuffer[9] = byte(readAttr)
cmd.dataBuffer[10] = byte(writeAttr)
cmd.dataBuffer[11] = byte(infoAttr)
cmd.dataBuffer[12] = 0 // unused
cmd.dataBuffer[13] = 0 // clear the result code
Buffer.Int32ToBytes(generation, cmd.dataBuffer, 14)
Buffer.Int32ToBytes(policy.Expiration, cmd.dataBuffer, 18)
// Initialize timeout. It will be written later.
cmd.dataBuffer[22] = 0
cmd.dataBuffer[23] = 0
cmd.dataBuffer[24] = 0
cmd.dataBuffer[25] = 0
Buffer.Int16ToBytes(int16(fieldCount), cmd.dataBuffer, 26)
Buffer.Int16ToBytes(int16(operationCount), cmd.dataBuffer, 28)
cmd.dataOffset = int(_MSG_TOTAL_HEADER_SIZE)
}
// Generic header write.
func (cmd *baseCommand) writeHeader(policy *BasePolicy, readAttr int, writeAttr int, fieldCount int, operationCount int) {
if policy.ConsistencyLevel == CONSISTENCY_ALL {
readAttr |= _INFO1_CONSISTENCY_ALL
}
// Write all header data except total size which must be written last.
cmd.dataBuffer[8] = _MSG_REMAINING_HEADER_SIZE // Message header length.
cmd.dataBuffer[9] = byte(readAttr)
cmd.dataBuffer[10] = byte(writeAttr)
for i := 11; i < 26; i++ {
cmd.dataBuffer[i] = 0
}
Buffer.Int16ToBytes(int16(fieldCount), cmd.dataBuffer, 26)
Buffer.Int16ToBytes(int16(operationCount), cmd.dataBuffer, 28)
cmd.dataOffset = int(_MSG_TOTAL_HEADER_SIZE)
}
func (pckr *packer) PackShort(valType int, val int16) {
pckr.buffer.WriteByte(byte(valType))
pos := pckr.grow(_b2)
Buffer.Int16ToBytes(val, pckr.buffer.Bytes(), pos)
}