bool InnerNode::write_msgbuf(BlockWriter& writer, MsgBuf *mb, Slice buffer)
{
if (tree_->compressor_) {
// 1. write to buffer
Block block(buffer, 0, 0);
BlockWriter wr(&block);
if (!mb->write_to(wr)) return false;
// 2. compress
assert(tree_->compressor_->max_compressed_length(block.size()) <=
writer.remain());
size_t compressed_length;
if (!tree_->compressor_->compress(buffer.data(), block.size(),
writer.addr(), &compressed_length)) {
LOG_ERROR("compress msgbuf error, nid " << nid_);
return false;
}
// 3. skip
writer.skip(compressed_length);
return true;
} else {
return mb->write_to(writer);
}
}
bool LeafNode::write_bucket(BlockWriter& writer, RecordBucket *bucket, Slice buffer)
{
if (tree_->compressor_) {
// 1. write to buffer
Block block(buffer, 0, 0);
BlockWriter wr(&block);
if (!write_bucket(wr, bucket)) return false;
// 2. compress
assert(tree_->compressor_->max_compressed_length(block.size()) <=
writer.remain());
size_t compressed_length;
if (!tree_->compressor_->compress(buffer.data(), block.size(),
writer.addr(), &compressed_length)) {
LOG_ERROR("compress msgbuf error, nid " << nid_);
return false;
}
// 3. skip
writer.skip(compressed_length);
return true;
} else {
return write_bucket(writer, bucket);
}
}