store: adding transactions & receipts columns to cold storage

[posvyatokum]

No description provided.

[mina86]

Suggested change

	let chunks = {
	let mut chunks: Vec<ShardChunk> = vec![];
	for chunk_header in block.chunks().iter() {
	chunks.push(store.get_ser_or_err(DBCol::Chunks, chunk_header.chunk_hash().as_bytes())?);
	}
	chunks
	};
	let chunks = block.chunks().iter().map(|chunk_header| {
	store.get_ser_or_err(DBCol::Chunks, chunk_header.chunk_hash().as_bytes())
	}).collect::<Result<Vec<_>, _>()?;

should work

[mina86]

No need to do to_vec in &shard_id.to_le_bytes().to_vec(). Furthermore,

Suggested change

	let mut outcomes: Vec<Vec<CryptoHash>> = vec![];
	for shard_id in 0..shard_layout.num_shards() {
	debug_assert_eq!(
	DBCol::OutcomeIds.key_type(),
	&[DBKeyType::BlockHash, DBKeyType::ShardId]
	);
	outcomes.push(
	store
	.get_ser(
	DBCol::OutcomeIds,
	&join_two_keys(
	&block_hash_key,
	&shard_id.to_le_bytes().to_vec(),
	),
	)?
	.unwrap_or_default(),
	);
	}
	outcomes
	.iter()
	.flat_map(|os| os.iter().map(|o| o.as_bytes().to_vec()))
	.collect()
	debug_assert_eq!(
	DBCol::OutcomeIds.key_type(),
	&[DBKeyType::BlockHash, DBKeyType::ShardId]
	);
	(0..shard_layout.num_shards())
	.map(|shard_id| {
	Ok(store
	.get_ser::<Vec<CryptoHash>>(
	DBCol::OutcomeIds,
	&join_two_keys(
	&block_hash_key,
	&shard_id.to_le_bytes(),
	),
	)?
	.unwrap_or_default())
	})
	.collect::<Result<Vec<_>, _>()?
	.into_iter()
	.flat_map(|hashes| hashes.into_iter().map(|hash| hash.as_bytes().to_vec()))
	.collect()

Might need to add some more types somewhere but should work.