Block: use trie.batch

[ScottyPoi]

Follow-up to #3313
Continuing work towards optimizations in #3293

block.genTransactionsTrie()

Returns the txs trie root for array of TypedTransaction

This method is used during block building and block validation

An empty trie is contructed from a list of serialized transactions (with the tx index as key)

The root of this trie is the TransactionsTrieRoot of a block.

trie.batch()

The refactored trie.batch method in #3313 demonstrated up to 33% efficiency improvements over the naive for (tx of txs) {...} approach.

Changes:

block.genTransactionsTrieRoot() will now construct a trie from a batch input of serialized transactions.

    const batchOp: BatchDBOp[] = txs.map((tx, i) => {
      return {
        type: 'put',
        key: RLP.encode(i),
        value: tx.serialize(),
      }
    })
    await trie.batch(batchOp)

This should improve performance during block building and validation

TODO:

• merge Batch-optimization #3313
• rebase
• benchmark

[codecov]

Codecov Report

Attention: Patch coverage is 95.87629% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 86.93%. Comparing base (a70312d) to head (9609f1e).

Additional details and impacted files

Flag	Coverage Δ
block	88.46% <100.00%> (+0.02%)	⬆️
blockchain	91.61% <ø> (ø)
client	84.85% <ø> (ø)
common	98.43% <ø> (ø)
devp2p	82.12% <ø> (ø)
ethash	∅ <ø> (∅)
evm	74.16% <ø> (ø)
genesis	99.98% <ø> (ø)
rlp	∅ <ø> (∅)
statemanager	77.00% <ø> (ø)
trie	89.72% <95.45%> (+0.40%)	⬆️
tx	95.08% <ø> (ø)
util	89.34% <ø> (ø)
vm	79.87% <ø> (ø)
wallet	88.35% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[holgerd77]

Cool that you even already started on this one 👍, also cool that this is separated into two PRs! 💯

Is this already "so ready" that I could test this in the client setup I had and see how it goes? Or does this need more work before?