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consensus/clique, core: API cleanup (#23100)

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This removes some code:

- The clique engine calculated the snapshot twice when verifying headers/blocks.

- The method GetBlockHashesFromHash in Header/Block/Lightchain was only used by tests. It
  is now removed from the API.
  
- The method GetTdByHash internally looked up the number before calling GetTd(hash, num).
  In many cases, callers already had the number, and used this method just because it has a
  shorter name. I have removed the method to make the API surface smaller.
This commit is contained in:
Martin Holst Swende
2021-10-11 23:16:46 +02:00
committed by GitHub
parent da3da7c0e7
commit 6289137827
9 changed files with 38 additions and 84 deletions
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12
light/lightchain.go
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@ -430,12 +430,6 @@ func (lc *LightChain) GetTd(hash common.Hash, number uint64) *big.Int {
return lc.hc.GetTd(hash, number)
}
// GetTdByHash retrieves a block's total difficulty in the canonical chain from the
// database by hash, caching it if found.
func (lc *LightChain) GetTdByHash(hash common.Hash) *big.Int {
return lc.hc.GetTdByHash(hash)
}
// GetHeaderByNumberOdr retrieves the total difficult from the database or
// network by hash and number, caching it (associated with its hash) if found.
func (lc *LightChain) GetTdOdr(ctx context.Context, hash common.Hash, number uint64) *big.Int {
@ -470,12 +464,6 @@ func (bc *LightChain) GetCanonicalHash(number uint64) common.Hash {
return bc.hc.GetCanonicalHash(number)
}
// GetBlockHashesFromHash retrieves a number of block hashes starting at a given
// hash, fetching towards the genesis block.
func (lc *LightChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash {
return lc.hc.GetBlockHashesFromHash(hash, max)
}
// GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or
// a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the
// number of blocks to be individually checked before we reach the canonical chain.